summaryrefslogtreecommitdiffstats
path: root/drivers/clk
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/clk')
-rw-r--r--drivers/clk/Makefile3
-rw-r--r--drivers/clk/spear/Makefile8
-rw-r--r--drivers/clk/spear/clk-aux-synth.c198
-rw-r--r--drivers/clk/spear/clk-frac-synth.c165
-rw-r--r--drivers/clk/spear/clk-gpt-synth.c154
-rw-r--r--drivers/clk/spear/clk-vco-pll.c363
-rw-r--r--drivers/clk/spear/clk.c36
-rw-r--r--drivers/clk/spear/clk.h134
-rw-r--r--drivers/clk/spear/spear3xx_clock.c612
-rw-r--r--drivers/clk/spear/spear6xx_clock.c342
10 files changed, 2014 insertions, 1 deletions
diff --git a/drivers/clk/Makefile b/drivers/clk/Makefile
index 4a5bdbc3038..b9a5158a30b 100644
--- a/drivers/clk/Makefile
+++ b/drivers/clk/Makefile
@@ -2,5 +2,6 @@
obj-$(CONFIG_CLKDEV_LOOKUP) += clkdev.o
obj-$(CONFIG_COMMON_CLK) += clk.o clk-fixed-rate.o clk-gate.o \
clk-mux.o clk-divider.o clk-fixed-factor.o
-
+# SoCs specific
obj-$(CONFIG_ARCH_MXS) += mxs/
+obj-$(CONFIG_PLAT_SPEAR) += spear/
diff --git a/drivers/clk/spear/Makefile b/drivers/clk/spear/Makefile
new file mode 100644
index 00000000000..335886049c8
--- /dev/null
+++ b/drivers/clk/spear/Makefile
@@ -0,0 +1,8 @@
+#
+# SPEAr Clock specific Makefile
+#
+
+obj-y += clk.o clk-aux-synth.o clk-frac-synth.o clk-gpt-synth.o clk-vco-pll.o
+
+obj-$(CONFIG_ARCH_SPEAR3XX) += spear3xx_clock.o
+obj-$(CONFIG_ARCH_SPEAR6XX) += spear6xx_clock.o
diff --git a/drivers/clk/spear/clk-aux-synth.c b/drivers/clk/spear/clk-aux-synth.c
new file mode 100644
index 00000000000..af34074e702
--- /dev/null
+++ b/drivers/clk/spear/clk-aux-synth.c
@@ -0,0 +1,198 @@
+/*
+ * Copyright (C) 2012 ST Microelectronics
+ * Viresh Kumar <viresh.kumar@st.com>
+ *
+ * This file is licensed under the terms of the GNU General Public
+ * License version 2. This program is licensed "as is" without any
+ * warranty of any kind, whether express or implied.
+ *
+ * Auxiliary Synthesizer clock implementation
+ */
+
+#define pr_fmt(fmt) "clk-aux-synth: " fmt
+
+#include <linux/clk-provider.h>
+#include <linux/slab.h>
+#include <linux/io.h>
+#include <linux/err.h>
+#include "clk.h"
+
+/*
+ * DOC: Auxiliary Synthesizer clock
+ *
+ * Aux synth gives rate for different values of eq, x and y
+ *
+ * Fout from synthesizer can be given from two equations:
+ * Fout1 = (Fin * X/Y)/2 EQ1
+ * Fout2 = Fin * X/Y EQ2
+ */
+
+#define to_clk_aux(_hw) container_of(_hw, struct clk_aux, hw)
+
+static struct aux_clk_masks default_aux_masks = {
+ .eq_sel_mask = AUX_EQ_SEL_MASK,
+ .eq_sel_shift = AUX_EQ_SEL_SHIFT,
+ .eq1_mask = AUX_EQ1_SEL,
+ .eq2_mask = AUX_EQ2_SEL,
+ .xscale_sel_mask = AUX_XSCALE_MASK,
+ .xscale_sel_shift = AUX_XSCALE_SHIFT,
+ .yscale_sel_mask = AUX_YSCALE_MASK,
+ .yscale_sel_shift = AUX_YSCALE_SHIFT,
+ .enable_bit = AUX_SYNT_ENB,
+};
+
+static unsigned long aux_calc_rate(struct clk_hw *hw, unsigned long prate,
+ int index)
+{
+ struct clk_aux *aux = to_clk_aux(hw);
+ struct aux_rate_tbl *rtbl = aux->rtbl;
+ u8 eq = rtbl[index].eq ? 1 : 2;
+
+ return (((prate / 10000) * rtbl[index].xscale) /
+ (rtbl[index].yscale * eq)) * 10000;
+}
+
+static long clk_aux_round_rate(struct clk_hw *hw, unsigned long drate,
+ unsigned long *prate)
+{
+ struct clk_aux *aux = to_clk_aux(hw);
+ int unused;
+
+ return clk_round_rate_index(hw, drate, *prate, aux_calc_rate,
+ aux->rtbl_cnt, &unused);
+}
+
+static unsigned long clk_aux_recalc_rate(struct clk_hw *hw,
+ unsigned long parent_rate)
+{
+ struct clk_aux *aux = to_clk_aux(hw);
+ unsigned int num = 1, den = 1, val, eqn;
+ unsigned long flags = 0;
+
+ if (aux->lock)
+ spin_lock_irqsave(aux->lock, flags);
+
+ val = readl_relaxed(aux->reg);
+
+ if (aux->lock)
+ spin_unlock_irqrestore(aux->lock, flags);
+
+ eqn = (val >> aux->masks->eq_sel_shift) & aux->masks->eq_sel_mask;
+ if (eqn == aux->masks->eq1_mask)
+ den = 2;
+
+ /* calculate numerator */
+ num = (val >> aux->masks->xscale_sel_shift) &
+ aux->masks->xscale_sel_mask;
+
+ /* calculate denominator */
+ den *= (val >> aux->masks->yscale_sel_shift) &
+ aux->masks->yscale_sel_mask;
+
+ if (!den)
+ return 0;
+
+ return (((parent_rate / 10000) * num) / den) * 10000;
+}
+
+/* Configures new clock rate of aux */
+static int clk_aux_set_rate(struct clk_hw *hw, unsigned long drate,
+ unsigned long prate)
+{
+ struct clk_aux *aux = to_clk_aux(hw);
+ struct aux_rate_tbl *rtbl = aux->rtbl;
+ unsigned long val, flags = 0;
+ int i;
+
+ clk_round_rate_index(hw, drate, prate, aux_calc_rate, aux->rtbl_cnt,
+ &i);
+
+ if (aux->lock)
+ spin_lock_irqsave(aux->lock, flags);
+
+ val = readl_relaxed(aux->reg) &
+ ~(aux->masks->eq_sel_mask << aux->masks->eq_sel_shift);
+ val |= (rtbl[i].eq & aux->masks->eq_sel_mask) <<
+ aux->masks->eq_sel_shift;
+ val &= ~(aux->masks->xscale_sel_mask << aux->masks->xscale_sel_shift);
+ val |= (rtbl[i].xscale & aux->masks->xscale_sel_mask) <<
+ aux->masks->xscale_sel_shift;
+ val &= ~(aux->masks->yscale_sel_mask << aux->masks->yscale_sel_shift);
+ val |= (rtbl[i].yscale & aux->masks->yscale_sel_mask) <<
+ aux->masks->yscale_sel_shift;
+ writel_relaxed(val, aux->reg);
+
+ if (aux->lock)
+ spin_unlock_irqrestore(aux->lock, flags);
+
+ return 0;
+}
+
+static struct clk_ops clk_aux_ops = {
+ .recalc_rate = clk_aux_recalc_rate,
+ .round_rate = clk_aux_round_rate,
+ .set_rate = clk_aux_set_rate,
+};
+
+struct clk *clk_register_aux(const char *aux_name, const char *gate_name,
+ const char *parent_name, unsigned long flags, void __iomem *reg,
+ struct aux_clk_masks *masks, struct aux_rate_tbl *rtbl,
+ u8 rtbl_cnt, spinlock_t *lock, struct clk **gate_clk)
+{
+ struct clk_aux *aux;
+ struct clk_init_data init;
+ struct clk *clk;
+
+ if (!aux_name || !parent_name || !reg || !rtbl || !rtbl_cnt) {
+ pr_err("Invalid arguments passed");
+ return ERR_PTR(-EINVAL);
+ }
+
+ aux = kzalloc(sizeof(*aux), GFP_KERNEL);
+ if (!aux) {
+ pr_err("could not allocate aux clk\n");
+ return ERR_PTR(-ENOMEM);
+ }
+
+ /* struct clk_aux assignments */
+ if (!masks)
+ aux->masks = &default_aux_masks;
+ else
+ aux->masks = masks;
+
+ aux->reg = reg;
+ aux->rtbl = rtbl;
+ aux->rtbl_cnt = rtbl_cnt;
+ aux->lock = lock;
+ aux->hw.init = &init;
+
+ init.name = aux_name;
+ init.ops = &clk_aux_ops;
+ init.flags = flags;
+ init.parent_names = &parent_name;
+ init.num_parents = 1;
+
+ clk = clk_register(NULL, &aux->hw);
+ if (IS_ERR_OR_NULL(clk))
+ goto free_aux;
+
+ if (gate_name) {
+ struct clk *tgate_clk;
+
+ tgate_clk = clk_register_gate(NULL, gate_name, aux_name, 0, reg,
+ aux->masks->enable_bit, 0, lock);
+ if (IS_ERR_OR_NULL(tgate_clk))
+ goto free_aux;
+
+ if (gate_clk)
+ *gate_clk = tgate_clk;
+ }
+
+ return clk;
+
+free_aux:
+ kfree(aux);
+ pr_err("clk register failed\n");
+
+ return NULL;
+}
diff --git a/drivers/clk/spear/clk-frac-synth.c b/drivers/clk/spear/clk-frac-synth.c
new file mode 100644
index 00000000000..4dbdb3fe18e
--- /dev/null
+++ b/drivers/clk/spear/clk-frac-synth.c
@@ -0,0 +1,165 @@
+/*
+ * Copyright (C) 2012 ST Microelectronics
+ * Viresh Kumar <viresh.kumar@st.com>
+ *
+ * This file is licensed under the terms of the GNU General Public
+ * License version 2. This program is licensed "as is" without any
+ * warranty of any kind, whether express or implied.
+ *
+ * Fractional Synthesizer clock implementation
+ */
+
+#define pr_fmt(fmt) "clk-frac-synth: " fmt
+
+#include <linux/clk-provider.h>
+#include <linux/slab.h>
+#include <linux/io.h>
+#include <linux/err.h>
+#include "clk.h"
+
+#define DIV_FACTOR_MASK 0x1FFFF
+
+/*
+ * DOC: Fractional Synthesizer clock
+ *
+ * Fout from synthesizer can be given from below equation:
+ *
+ * Fout= Fin/2*div (division factor)
+ * div is 17 bits:-
+ * 0-13 (fractional part)
+ * 14-16 (integer part)
+ * div is (16-14 bits).(13-0 bits) (in binary)
+ *
+ * Fout = Fin/(2 * div)
+ * Fout = ((Fin / 10000)/(2 * div)) * 10000
+ * Fout = (2^14 * (Fin / 10000)/(2^14 * (2 * div))) * 10000
+ * Fout = (((Fin / 10000) << 14)/(2 * (div << 14))) * 10000
+ *
+ * div << 14 simply 17 bit value written at register.
+ * Max error due to scaling down by 10000 is 10 KHz
+ */
+
+#define to_clk_frac(_hw) container_of(_hw, struct clk_frac, hw)
+
+static unsigned long frac_calc_rate(struct clk_hw *hw, unsigned long prate,
+ int index)
+{
+ struct clk_frac *frac = to_clk_frac(hw);
+ struct frac_rate_tbl *rtbl = frac->rtbl;
+
+ prate /= 10000;
+ prate <<= 14;
+ prate /= (2 * rtbl[index].div);
+ prate *= 10000;
+
+ return prate;
+}
+
+static long clk_frac_round_rate(struct clk_hw *hw, unsigned long drate,
+ unsigned long *prate)
+{
+ struct clk_frac *frac = to_clk_frac(hw);
+ int unused;
+
+ return clk_round_rate_index(hw, drate, *prate, frac_calc_rate,
+ frac->rtbl_cnt, &unused);
+}
+
+static unsigned long clk_frac_recalc_rate(struct clk_hw *hw,
+ unsigned long parent_rate)
+{
+ struct clk_frac *frac = to_clk_frac(hw);
+ unsigned long flags = 0;
+ unsigned int div = 1, val;
+
+ if (frac->lock)
+ spin_lock_irqsave(frac->lock, flags);
+
+ val = readl_relaxed(frac->reg);
+
+ if (frac->lock)
+ spin_unlock_irqrestore(frac->lock, flags);
+
+ div = val & DIV_FACTOR_MASK;
+
+ if (!div)
+ return 0;
+
+ parent_rate = parent_rate / 10000;
+
+ parent_rate = (parent_rate << 14) / (2 * div);
+ return parent_rate * 10000;
+}
+
+/* Configures new clock rate of frac */
+static int clk_frac_set_rate(struct clk_hw *hw, unsigned long drate,
+ unsigned long prate)
+{
+ struct clk_frac *frac = to_clk_frac(hw);
+ struct frac_rate_tbl *rtbl = frac->rtbl;
+ unsigned long flags = 0, val;
+ int i;
+
+ clk_round_rate_index(hw, drate, prate, frac_calc_rate, frac->rtbl_cnt,
+ &i);
+
+ if (frac->lock)
+ spin_lock_irqsave(frac->lock, flags);
+
+ val = readl_relaxed(frac->reg) & ~DIV_FACTOR_MASK;
+ val |= rtbl[i].div & DIV_FACTOR_MASK;
+ writel_relaxed(val, frac->reg);
+
+ if (frac->lock)
+ spin_unlock_irqrestore(frac->lock, flags);
+
+ return 0;
+}
+
+struct clk_ops clk_frac_ops = {
+ .recalc_rate = clk_frac_recalc_rate,
+ .round_rate = clk_frac_round_rate,
+ .set_rate = clk_frac_set_rate,
+};
+
+struct clk *clk_register_frac(const char *name, const char *parent_name,
+ unsigned long flags, void __iomem *reg,
+ struct frac_rate_tbl *rtbl, u8 rtbl_cnt, spinlock_t *lock)
+{
+ struct clk_init_data init;
+ struct clk_frac *frac;
+ struct clk *clk;
+
+ if (!name || !parent_name || !reg || !rtbl || !rtbl_cnt) {
+ pr_err("Invalid arguments passed");
+ return ERR_PTR(-EINVAL);
+ }
+
+ frac = kzalloc(sizeof(*frac), GFP_KERNEL);
+ if (!frac) {
+ pr_err("could not allocate frac clk\n");
+ return ERR_PTR(-ENOMEM);
+ }
+
+ /* struct clk_frac assignments */
+ frac->reg = reg;
+ frac->rtbl = rtbl;
+ frac->rtbl_cnt = rtbl_cnt;
+ frac->lock = lock;
+ frac->hw.init = &init;
+
+ init.name = name;
+ init.ops = &clk_frac_ops;
+ init.flags = flags;
+ init.parent_names = &parent_name;
+ init.num_parents = 1;
+
+ clk = clk_register(NULL, &frac->hw);
+ if (!IS_ERR_OR_NULL(clk))
+ return clk;
+
+ pr_err("clk register failed\n");
+ kfree(frac);
+
+ return NULL;
+}
diff --git a/drivers/clk/spear/clk-gpt-synth.c b/drivers/clk/spear/clk-gpt-synth.c
new file mode 100644
index 00000000000..b471c9762a9
--- /dev/null
+++ b/drivers/clk/spear/clk-gpt-synth.c
@@ -0,0 +1,154 @@
+/*
+ * Copyright (C) 2012 ST Microelectronics
+ * Viresh Kumar <viresh.kumar@st.com>
+ *
+ * This file is licensed under the terms of the GNU General Public
+ * License version 2. This program is licensed "as is" without any
+ * warranty of any kind, whether express or implied.
+ *
+ * General Purpose Timer Synthesizer clock implementation
+ */
+
+#define pr_fmt(fmt) "clk-gpt-synth: " fmt
+
+#include <linux/clk-provider.h>
+#include <linux/slab.h>
+#include <linux/io.h>
+#include <linux/err.h>
+#include "clk.h"
+
+#define GPT_MSCALE_MASK 0xFFF
+#define GPT_NSCALE_SHIFT 12
+#define GPT_NSCALE_MASK 0xF
+
+/*
+ * DOC: General Purpose Timer Synthesizer clock
+ *
+ * Calculates gpt synth clk rate for different values of mscale and nscale
+ *
+ * Fout= Fin/((2 ^ (N+1)) * (M+1))
+ */
+
+#define to_clk_gpt(_hw) container_of(_hw, struct clk_gpt, hw)
+
+static unsigned long gpt_calc_rate(struct clk_hw *hw, unsigned long prate,
+ int index)
+{
+ struct clk_gpt *gpt = to_clk_gpt(hw);
+ struct gpt_rate_tbl *rtbl = gpt->rtbl;
+
+ prate /= ((1 << (rtbl[index].nscale + 1)) * (rtbl[index].mscale + 1));
+
+ return prate;
+}
+
+static long clk_gpt_round_rate(struct clk_hw *hw, unsigned long drate,
+ unsigned long *prate)
+{
+ struct clk_gpt *gpt = to_clk_gpt(hw);
+ int unused;
+
+ return clk_round_rate_index(hw, drate, *prate, gpt_calc_rate,
+ gpt->rtbl_cnt, &unused);
+}
+
+static unsigned long clk_gpt_recalc_rate(struct clk_hw *hw,
+ unsigned long parent_rate)
+{
+ struct clk_gpt *gpt = to_clk_gpt(hw);
+ unsigned long flags = 0;
+ unsigned int div = 1, val;
+
+ if (gpt->lock)
+ spin_lock_irqsave(gpt->lock, flags);
+
+ val = readl_relaxed(gpt->reg);
+
+ if (gpt->lock)
+ spin_unlock_irqrestore(gpt->lock, flags);
+
+ div += val & GPT_MSCALE_MASK;
+ div *= 1 << (((val >> GPT_NSCALE_SHIFT) & GPT_NSCALE_MASK) + 1);
+
+ if (!div)
+ return 0;
+
+ return parent_rate / div;
+}
+
+/* Configures new clock rate of gpt */
+static int clk_gpt_set_rate(struct clk_hw *hw, unsigned long drate,
+ unsigned long prate)
+{
+ struct clk_gpt *gpt = to_clk_gpt(hw);
+ struct gpt_rate_tbl *rtbl = gpt->rtbl;
+ unsigned long flags = 0, val;
+ int i;
+
+ clk_round_rate_index(hw, drate, prate, gpt_calc_rate, gpt->rtbl_cnt,
+ &i);
+
+ if (gpt->lock)
+ spin_lock_irqsave(gpt->lock, flags);
+
+ val = readl(gpt->reg) & ~GPT_MSCALE_MASK;
+ val &= ~(GPT_NSCALE_MASK << GPT_NSCALE_SHIFT);
+
+ val |= rtbl[i].mscale & GPT_MSCALE_MASK;
+ val |= (rtbl[i].nscale & GPT_NSCALE_MASK) << GPT_NSCALE_SHIFT;
+
+ writel_relaxed(val, gpt->reg);
+
+ if (gpt->lock)
+ spin_unlock_irqrestore(gpt->lock, flags);
+
+ return 0;
+}
+
+static struct clk_ops clk_gpt_ops = {
+ .recalc_rate = clk_gpt_recalc_rate,
+ .round_rate = clk_gpt_round_rate,
+ .set_rate = clk_gpt_set_rate,
+};
+
+struct clk *clk_register_gpt(const char *name, const char *parent_name, unsigned
+ long flags, void __iomem *reg, struct gpt_rate_tbl *rtbl, u8
+ rtbl_cnt, spinlock_t *lock)
+{
+ struct clk_init_data init;
+ struct clk_gpt *gpt;
+ struct clk *clk;
+
+ if (!name || !parent_name || !reg || !rtbl || !rtbl_cnt) {
+ pr_err("Invalid arguments passed");
+ return ERR_PTR(-EINVAL);
+ }
+
+ gpt = kzalloc(sizeof(*gpt), GFP_KERNEL);
+ if (!gpt) {
+ pr_err("could not allocate gpt clk\n");
+ return ERR_PTR(-ENOMEM);
+ }
+
+ /* struct clk_gpt assignments */
+ gpt->reg = reg;
+ gpt->rtbl = rtbl;
+ gpt->rtbl_cnt = rtbl_cnt;
+ gpt->lock = lock;
+ gpt->hw.init = &init;
+
+ init.name = name;
+ init.ops = &clk_gpt_ops;
+ init.flags = flags;
+ init.parent_names = &parent_name;
+ init.num_parents = 1;
+
+ clk = clk_register(NULL, &gpt->hw);
+ if (!IS_ERR_OR_NULL(clk))
+ return clk;
+
+ pr_err("clk register failed\n");
+ kfree(gpt);
+
+ return NULL;
+}
diff --git a/drivers/clk/spear/clk-vco-pll.c b/drivers/clk/spear/clk-vco-pll.c
new file mode 100644
index 00000000000..dcd4bdf4b0d
--- /dev/null
+++ b/drivers/clk/spear/clk-vco-pll.c
@@ -0,0 +1,363 @@
+/*
+ * Copyright (C) 2012 ST Microelectronics
+ * Viresh Kumar <viresh.kumar@st.com>
+ *
+ * This file is licensed under the terms of the GNU General Public
+ * License version 2. This program is licensed "as is" without any
+ * warranty of any kind, whether express or implied.
+ *
+ * VCO-PLL clock implementation
+ */
+
+#define pr_fmt(fmt) "clk-vco-pll: " fmt
+
+#include <linux/clk-provider.h>
+#include <linux/slab.h>
+#include <linux/io.h>
+#include <linux/err.h>
+#include "clk.h"
+
+/*
+ * DOC: VCO-PLL clock
+ *
+ * VCO and PLL rate are derived from following equations:
+ *
+ * In normal mode
+ * vco = (2 * M[15:8] * Fin)/N
+ *
+ * In Dithered mode
+ * vco = (2 * M[15:0] * Fin)/(256 * N)
+ *
+ * pll_rate = pll/2^p
+ *
+ * vco and pll are very closely bound to each other, "vco needs to program:
+ * mode, m & n" and "pll needs to program p", both share common enable/disable
+ * logic.
+ *
+ * clk_register_vco_pll() registers instances of both vco & pll.
+ * CLK_SET_RATE_PARENT flag is forced for pll, as it will always pass its
+ * set_rate to vco. A single rate table exists for both the clocks, which
+ * configures m, n and p.
+ */
+
+/* PLL_CTR register masks */
+#define PLL_MODE_NORMAL 0
+#define PLL_MODE_FRACTION 1
+#define PLL_MODE_DITH_DSM 2
+#define PLL_MODE_DITH_SSM 3
+#define PLL_MODE_MASK 3
+#define PLL_MODE_SHIFT 3
+#define PLL_ENABLE 2
+
+#define PLL_LOCK_SHIFT 0
+#define PLL_LOCK_MASK 1
+
+/* PLL FRQ register masks */
+#define PLL_NORM_FDBK_M_MASK 0xFF
+#define PLL_NORM_FDBK_M_SHIFT 24
+#define PLL_DITH_FDBK_M_MASK 0xFFFF
+#define PLL_DITH_FDBK_M_SHIFT 16
+#define PLL_DIV_P_MASK 0x7
+#define PLL_DIV_P_SHIFT 8
+#define PLL_DIV_N_MASK 0xFF
+#define PLL_DIV_N_SHIFT 0
+
+#define to_clk_vco(_hw) container_of(_hw, struct clk_vco, hw)
+#define to_clk_pll(_hw) container_of(_hw, struct clk_pll, hw)
+
+/* Calculates pll clk rate for specific value of mode, m, n and p */
+static unsigned long pll_calc_rate(struct pll_rate_tbl *rtbl,
+ unsigned long prate, int index, unsigned long *pll_rate)
+{
+ unsigned long rate = prate;
+ unsigned int mode;
+
+ mode = rtbl[index].mode ? 256 : 1;
+ rate = (((2 * rate / 10000) * rtbl[index].m) / (mode * rtbl[index].n));
+
+ if (pll_rate)
+ *pll_rate = (rate / (1 << rtbl[index].p)) * 10000;
+
+ return rate * 10000;
+}
+
+static long clk_pll_round_rate_index(struct clk_hw *hw, unsigned long drate,
+ unsigned long *prate, int *index)
+{
+ struct clk_pll *pll = to_clk_pll(hw);
+ unsigned long prev_rate, vco_prev_rate, rate = 0;
+ unsigned long vco_parent_rate =
+ __clk_get_rate(__clk_get_parent(__clk_get_parent(hw->clk)));
+
+ if (!prate) {
+ pr_err("%s: prate is must for pll clk\n", __func__);
+ return -EINVAL;
+ }
+
+ for (*index = 0; *index < pll->vco->rtbl_cnt; (*index)++) {
+ prev_rate = rate;
+ vco_prev_rate = *prate;
+ *prate = pll_calc_rate(pll->vco->rtbl, vco_parent_rate, *index,
+ &rate);
+ if (drate < rate) {
+ /* previous clock was best */
+ if (*index) {
+ rate = prev_rate;
+ *prate = vco_prev_rate;
+ (*index)--;
+ }
+ break;
+ }
+ }
+
+ return rate;
+}
+
+static long clk_pll_round_rate(struct clk_hw *hw, unsigned long drate,
+ unsigned long *prate)
+{
+ int unused;
+
+ return clk_pll_round_rate_index(hw, drate, prate, &unused);
+}
+
+static unsigned long clk_pll_recalc_rate(struct clk_hw *hw, unsigned long
+ parent_rate)
+{
+ struct clk_pll *pll = to_clk_pll(hw);
+ unsigned long flags = 0;
+ unsigned int p;
+
+ if (pll->vco->lock)
+ spin_lock_irqsave(pll->vco->lock, flags);
+
+ p = readl_relaxed(pll->vco->cfg_reg);
+
+ if (pll->vco->lock)
+ spin_unlock_irqrestore(pll->vco->lock, flags);
+
+ p = (p >> PLL_DIV_P_SHIFT) & PLL_DIV_P_MASK;
+
+ return parent_rate / (1 << p);
+}
+
+static int clk_pll_set_rate(struct clk_hw *hw, unsigned long drate,
+ unsigned long prate)
+{
+ struct clk_pll *pll = to_clk_pll(hw);
+ struct pll_rate_tbl *rtbl = pll->vco->rtbl;
+ unsigned long flags = 0, val;
+ int i;
+
+ clk_pll_round_rate_index(hw, drate, NULL, &i);
+
+ if (pll->vco->lock)
+ spin_lock_irqsave(pll->vco->lock, flags);
+
+ val = readl_relaxed(pll->vco->cfg_reg);
+ val &= ~(PLL_DIV_P_MASK << PLL_DIV_P_SHIFT);
+ val |= (rtbl[i].p & PLL_DIV_P_MASK) << PLL_DIV_P_SHIFT;
+ writel_relaxed(val, pll->vco->cfg_reg);
+
+ if (pll->vco->lock)
+ spin_unlock_irqrestore(pll->vco->lock, flags);
+
+ return 0;
+}
+
+static struct clk_ops clk_pll_ops = {
+ .recalc_rate = clk_pll_recalc_rate,
+ .round_rate = clk_pll_round_rate,
+ .set_rate = clk_pll_set_rate,
+};
+
+static inline unsigned long vco_calc_rate(struct clk_hw *hw,
+ unsigned long prate, int index)
+{
+ struct clk_vco *vco = to_clk_vco(hw);
+
+ return pll_calc_rate(vco->rtbl, prate, index, NULL);
+}
+
+static long clk_vco_round_rate(struct clk_hw *hw, unsigned long drate,
+ unsigned long *prate)
+{
+ struct clk_vco *vco = to_clk_vco(hw);
+ int unused;
+
+ return clk_round_rate_index(hw, drate, *prate, vco_calc_rate,
+ vco->rtbl_cnt, &unused);
+}
+
+static unsigned long clk_vco_recalc_rate(struct clk_hw *hw,
+ unsigned long parent_rate)
+{
+ struct clk_vco *vco = to_clk_vco(hw);
+ unsigned long flags = 0;
+ unsigned int num = 2, den = 0, val, mode = 0;
+
+ if (vco->lock)
+ spin_lock_irqsave(vco->lock, flags);
+
+ mode = (readl_relaxed(vco->mode_reg) >> PLL_MODE_SHIFT) & PLL_MODE_MASK;
+
+ val = readl_relaxed(vco->cfg_reg);
+
+ if (vco->lock)
+ spin_unlock_irqrestore(vco->lock, flags);
+
+ den = (val >> PLL_DIV_N_SHIFT) & PLL_DIV_N_MASK;
+
+ /* calculate numerator & denominator */
+ if (!mode) {
+ /* Normal mode */
+ num *= (val >> PLL_NORM_FDBK_M_SHIFT) & PLL_NORM_FDBK_M_MASK;
+ } else {
+ /* Dithered mode */
+ num *= (val >> PLL_DITH_FDBK_M_SHIFT) & PLL_DITH_FDBK_M_MASK;
+ den *= 256;
+ }
+
+ if (!den) {
+ WARN(1, "%s: denominator can't be zero\n", __func__);
+ return 0;
+ }
+
+ return (((parent_rate / 10000) * num) / den) * 10000;
+}
+
+/* Configures new clock rate of vco */
+static int clk_vco_set_rate(struct clk_hw *hw, unsigned long drate,
+ unsigned long prate)
+{
+ struct clk_vco *vco = to_clk_vco(hw);
+ struct pll_rate_tbl *rtbl = vco->rtbl;
+ unsigned long flags = 0, val;
+ int i;
+
+ clk_round_rate_index(hw, drate, prate, vco_calc_rate, vco->rtbl_cnt,
+ &i);
+
+ if (vco->lock)
+ spin_lock_irqsave(vco->lock, flags);
+
+ val = readl_relaxed(vco->mode_reg);
+ val &= ~(PLL_MODE_MASK << PLL_MODE_SHIFT);
+ val |= (rtbl[i].mode & PLL_MODE_MASK) << PLL_MODE_SHIFT;
+ writel_relaxed(val, vco->mode_reg);
+
+ val = readl_relaxed(vco->cfg_reg);
+ val &= ~(PLL_DIV_N_MASK << PLL_DIV_N_SHIFT);
+ val |= (rtbl[i].n & PLL_DIV_N_MASK) << PLL_DIV_N_SHIFT;
+
+ val &= ~(PLL_DITH_FDBK_M_MASK << PLL_DITH_FDBK_M_SHIFT);
+ if (rtbl[i].mode)
+ val |= (rtbl[i].m & PLL_DITH_FDBK_M_MASK) <<
+ PLL_DITH_FDBK_M_SHIFT;
+ else
+ val |= (rtbl[i].m & PLL_NORM_FDBK_M_MASK) <<
+ PLL_NORM_FDBK_M_SHIFT;
+
+ writel_relaxed(val, vco->cfg_reg);
+
+ if (vco->lock)
+ spin_unlock_irqrestore(vco->lock, flags);
+
+ return 0;
+}
+
+static struct clk_ops clk_vco_ops = {
+ .recalc_rate = clk_vco_recalc_rate,
+ .round_rate = clk_vco_round_rate,
+ .set_rate = clk_vco_set_rate,
+};
+
+struct clk *clk_register_vco_pll(const char *vco_name, const char *pll_name,
+ const char *vco_gate_name, const char *parent_name,
+ unsigned long flags, void __iomem *mode_reg, void __iomem
+ *cfg_reg, struct pll_rate_tbl *rtbl, u8 rtbl_cnt,
+ spinlock_t *lock, struct clk **pll_clk,
+ struct clk **vco_gate_clk)
+{
+ struct clk_vco *vco;
+ struct clk_pll *pll;
+ struct clk *vco_clk, *tpll_clk, *tvco_gate_clk;
+ struct clk_init_data vco_init, pll_init;
+ const char **vco_parent_name;
+
+ if (!vco_name || !pll_name || !parent_name || !mode_reg || !cfg_reg ||
+ !rtbl || !rtbl_cnt) {
+ pr_err("Invalid arguments passed");
+ return ERR_PTR(-EINVAL);
+ }
+
+ vco = kzalloc(sizeof(*vco), GFP_KERNEL);
+ if (!vco) {
+ pr_err("could not allocate vco clk\n");
+ return ERR_PTR(-ENOMEM);
+ }
+
+ pll = kzalloc(sizeof(*pll), GFP_KERNEL);
+ if (!pll) {
+ pr_err("could not allocate pll clk\n");
+ goto free_vco;
+ }
+
+ /* struct clk_vco assignments */
+ vco->mode_reg = mode_reg;
+ vco->cfg_reg = cfg_reg;
+ vco->rtbl = rtbl;
+ vco->rtbl_cnt = rtbl_cnt;
+ vco->lock = lock;
+ vco->hw.init = &vco_init;
+
+ pll->vco = vco;
+ pll->hw.init = &pll_init;
+
+ if (vco_gate_name) {
+ tvco_gate_clk = clk_register_gate(NULL, vco_gate_name,
+ parent_name, 0, mode_reg, PLL_ENABLE, 0, lock);
+ if (IS_ERR_OR_NULL(tvco_gate_clk))
+ goto free_pll;
+
+ if (vco_gate_clk)
+ *vco_gate_clk = tvco_gate_clk;
+ vco_parent_name = &vco_gate_name;
+ } else {
+ vco_parent_name = &parent_name;
+ }
+
+ vco_init.name = vco_name;
+ vco_init.ops = &clk_vco_ops;
+ vco_init.flags = flags;
+ vco_init.parent_names = vco_parent_name;
+ vco_init.num_parents = 1;
+
+ pll_init.name = pll_name;
+ pll_init.ops = &clk_pll_ops;
+ pll_init.flags = CLK_SET_RATE_PARENT;
+ pll_init.parent_names = &vco_name;
+ pll_init.num_parents = 1;
+
+ vco_clk = clk_register(NULL, &vco->hw);
+ if (IS_ERR_OR_NULL(vco_clk))
+ goto free_pll;
+
+ tpll_clk = clk_register(NULL, &pll->hw);
+ if (IS_ERR_OR_NULL(tpll_clk))
+ goto free_pll;
+
+ if (pll_clk)
+ *pll_clk = tpll_clk;
+
+ return vco_clk;
+
+free_pll:
+ kfree(pll);
+free_vco:
+ kfree(vco);
+
+ pr_err("Failed to register vco pll clock\n");
+
+ return ERR_PTR(-ENOMEM);
+}
diff --git a/drivers/clk/spear/clk.c b/drivers/clk/spear/clk.c
new file mode 100644
index 00000000000..376d4e5ff32
--- /dev/null
+++ b/drivers/clk/spear/clk.c
@@ -0,0 +1,36 @@
+/*
+ * Copyright (C) 2012 ST Microelectronics
+ * Viresh Kumar <viresh.kumar@st.com>
+ *
+ * This file is licensed under the terms of the GNU General Public
+ * License version 2. This program is licensed "as is" without any
+ * warranty of any kind, whether express or implied.
+ *
+ * SPEAr clk - Common routines
+ */
+
+#include <linux/clk-provider.h>
+#include <linux/types.h>
+#include "clk.h"
+
+long clk_round_rate_index(struct clk_hw *hw, unsigned long drate,
+ unsigned long parent_rate, clk_calc_rate calc_rate, u8 rtbl_cnt,
+ int *index)
+{
+ unsigned long prev_rate, rate = 0;
+
+ for (*index = 0; *index < rtbl_cnt; (*index)++) {
+ prev_rate = rate;
+ rate = calc_rate(hw, parent_rate, *index);
+ if (drate < rate) {
+ /* previous clock was best */
+ if (*index) {
+ rate = prev_rate;
+ (*index)--;
+ }
+ break;
+ }
+ }
+
+ return rate;
+}
diff --git a/drivers/clk/spear/clk.h b/drivers/clk/spear/clk.h
new file mode 100644
index 00000000000..3321c46a071
--- /dev/null
+++ b/drivers/clk/spear/clk.h
@@ -0,0 +1,134 @@
+/*
+ * Clock framework definitions for SPEAr platform
+ *
+ * Copyright (C) 2012 ST Microelectronics
+ * Viresh Kumar <viresh.kumar@st.com>
+ *
+ * This file is licensed under the terms of the GNU General Public
+ * License version 2. This program is licensed "as is" without any
+ * warranty of any kind, whether express or implied.
+ */
+
+#ifndef __SPEAR_CLK_H
+#define __SPEAR_CLK_H
+
+#include <linux/clk-provider.h>
+#include <linux/spinlock_types.h>
+#include <linux/types.h>
+
+/* Auxiliary Synth clk */
+/* Default masks */
+#define AUX_EQ_SEL_SHIFT 30
+#define AUX_EQ_SEL_MASK 1
+#define AUX_EQ1_SEL 0
+#define AUX_EQ2_SEL 1
+#define AUX_XSCALE_SHIFT 16
+#define AUX_XSCALE_MASK 0xFFF
+#define AUX_YSCALE_SHIFT 0
+#define AUX_YSCALE_MASK 0xFFF
+#define AUX_SYNT_ENB 31
+
+struct aux_clk_masks {
+ u32 eq_sel_mask;
+ u32 eq_sel_shift;
+ u32 eq1_mask;
+ u32 eq2_mask;
+ u32 xscale_sel_mask;
+ u32 xscale_sel_shift;
+ u32 yscale_sel_mask;
+ u32 yscale_sel_shift;
+ u32 enable_bit;
+};
+
+struct aux_rate_tbl {
+ u16 xscale;
+ u16 yscale;
+ u8 eq;
+};
+
+struct clk_aux {
+ struct clk_hw hw;
+ void __iomem *reg;
+ struct aux_clk_masks *masks;
+ struct aux_rate_tbl *rtbl;
+ u8 rtbl_cnt;
+ spinlock_t *lock;
+};
+
+/* Fractional Synth clk */
+struct frac_rate_tbl {
+ u32 div;
+};
+
+struct clk_frac {
+ struct clk_hw hw;
+ void __iomem *reg;
+ struct frac_rate_tbl *rtbl;
+ u8 rtbl_cnt;
+ spinlock_t *lock;
+};
+
+/* GPT clk */
+struct gpt_rate_tbl {
+ u16 mscale;
+ u16 nscale;
+};
+
+struct clk_gpt {
+ struct clk_hw hw;
+ void __iomem *reg;
+ struct gpt_rate_tbl *rtbl;
+ u8 rtbl_cnt;
+ spinlock_t *lock;
+};
+
+/* VCO-PLL clk */
+struct pll_rate_tbl {
+ u8 mode;
+ u16 m;
+ u8 n;
+ u8 p;
+};
+
+struct clk_vco {
+ struct clk_hw hw;
+ void __iomem *mode_reg;
+ void __iomem *cfg_reg;
+ struct pll_rate_tbl *rtbl;
+ u8 rtbl_cnt;
+ spinlock_t *lock;
+};
+
+struct clk_pll {
+ struct clk_hw hw;
+ struct clk_vco *vco;
+ const char *parent[1];
+ spinlock_t *lock;
+};
+
+typedef unsigned long (*clk_calc_rate)(struct clk_hw *hw, unsigned long prate,
+ int index);
+
+/* clk register routines */
+struct clk *clk_register_aux(const char *aux_name, const char *gate_name,
+ const char *parent_name, unsigned long flags, void __iomem *reg,
+ struct aux_clk_masks *masks, struct aux_rate_tbl *rtbl,
+ u8 rtbl_cnt, spinlock_t *lock, struct clk **gate_clk);
+struct clk *clk_register_frac(const char *name, const char *parent_name,
+ unsigned long flags, void __iomem *reg,
+ struct frac_rate_tbl *rtbl, u8 rtbl_cnt, spinlock_t *lock);
+struct clk *clk_register_gpt(const char *name, const char *parent_name, unsigned
+ long flags, void __iomem *reg, struct gpt_rate_tbl *rtbl, u8
+ rtbl_cnt, spinlock_t *lock);
+struct clk *clk_register_vco_pll(const char *vco_name, const char *pll_name,
+ const char *vco_gate_name, const char *parent_name,
+ unsigned long flags, void __iomem *mode_reg, void __iomem
+ *cfg_reg, struct pll_rate_tbl *rtbl, u8 rtbl_cnt,
+ spinlock_t *lock, struct clk **pll_clk,
+ struct clk **vco_gate_clk);
+
+long clk_round_rate_index(struct clk_hw *hw, unsigned long drate,
+ unsigned long parent_rate, clk_calc_rate calc_rate, u8 rtbl_cnt,
+ int *index);
+
+#endif /* __SPEAR_CLK_H */
diff --git a/drivers/clk/spear/spear3xx_clock.c b/drivers/clk/spear/spear3xx_clock.c
new file mode 100644
index 00000000000..440bb3e4c97
--- /dev/null
+++ b/drivers/clk/spear/spear3xx_clock.c
@@ -0,0 +1,612 @@
+/*
+ * SPEAr3xx machines clock framework source file
+ *
+ * Copyright (C) 2012 ST Microelectronics
+ * Viresh Kumar <viresh.kumar@st.com>
+ *
+ * This file is licensed under the terms of the GNU General Public
+ * License version 2. This program is licensed "as is" without any
+ * warranty of any kind, whether express or implied.
+ */
+
+#include <linux/clk.h>
+#include <linux/clkdev.h>
+#include <linux/err.h>
+#include <linux/io.h>
+#include <linux/of_platform.h>
+#include <linux/spinlock_types.h>
+#include <mach/misc_regs.h>
+#include "clk.h"
+
+static DEFINE_SPINLOCK(_lock);
+
+#define PLL1_CTR (MISC_BASE + 0x008)
+#define PLL1_FRQ (MISC_BASE + 0x00C)
+#define PLL2_CTR (MISC_BASE + 0x014)
+#define PLL2_FRQ (MISC_BASE + 0x018)
+#define PLL_CLK_CFG (MISC_BASE + 0x020)
+ /* PLL_CLK_CFG register masks */
+ #define MCTR_CLK_SHIFT 28
+ #define MCTR_CLK_MASK 3
+
+#define CORE_CLK_CFG (MISC_BASE + 0x024)
+ /* CORE CLK CFG register masks */
+ #define GEN_SYNTH2_3_CLK_SHIFT 18
+ #define GEN_SYNTH2_3_CLK_MASK 1
+
+ #define HCLK_RATIO_SHIFT 10
+ #define HCLK_RATIO_MASK 2
+ #define PCLK_RATIO_SHIFT 8
+ #define PCLK_RATIO_MASK 2
+
+#define PERIP_CLK_CFG (MISC_BASE + 0x028)
+ /* PERIP_CLK_CFG register masks */
+ #define UART_CLK_SHIFT 4
+ #define UART_CLK_MASK 1
+ #define FIRDA_CLK_SHIFT 5
+ #define FIRDA_CLK_MASK 2
+ #define GPT0_CLK_SHIFT 8
+ #define GPT1_CLK_SHIFT 11
+ #define GPT2_CLK_SHIFT 12
+ #define GPT_CLK_MASK 1
+
+#define PERIP1_CLK_ENB (MISC_BASE + 0x02C)
+ /* PERIP1_CLK_ENB register masks */
+ #define UART_CLK_ENB 3
+ #define SSP_CLK_ENB 5
+ #define I2C_CLK_ENB 7
+ #define JPEG_CLK_ENB 8
+ #define FIRDA_CLK_ENB 10
+ #define GPT1_CLK_ENB 11
+ #define GPT2_CLK_ENB 12
+ #define ADC_CLK_ENB 15
+ #define RTC_CLK_ENB 17
+ #define GPIO_CLK_ENB 18
+ #define DMA_CLK_ENB 19
+ #define SMI_CLK_ENB 21
+ #define GMAC_CLK_ENB 23
+ #define USBD_CLK_ENB 24
+ #define USBH_CLK_ENB 25
+ #define C3_CLK_ENB 31
+
+#define RAS_CLK_ENB (MISC_BASE + 0x034)
+ #define RAS_AHB_CLK_ENB 0
+ #define RAS_PLL1_CLK_ENB 1
+ #define RAS_APB_CLK_ENB 2
+ #define RAS_32K_CLK_ENB 3
+ #define RAS_24M_CLK_ENB 4
+ #define RAS_48M_CLK_ENB 5
+ #define RAS_PLL2_CLK_ENB 7
+ #define RAS_SYNT0_CLK_ENB 8
+ #define RAS_SYNT1_CLK_ENB 9
+ #define RAS_SYNT2_CLK_ENB 10
+ #define RAS_SYNT3_CLK_ENB 11
+
+#define PRSC0_CLK_CFG (MISC_BASE + 0x044)
+#define PRSC1_CLK_CFG (MISC_BASE + 0x048)
+#define PRSC2_CLK_CFG (MISC_BASE + 0x04C)
+#define AMEM_CLK_CFG (MISC_BASE + 0x050)
+ #define AMEM_CLK_ENB 0
+
+#define CLCD_CLK_SYNT (MISC_BASE + 0x05C)
+#define FIRDA_CLK_SYNT (MISC_BASE + 0x060)
+#define UART_CLK_SYNT (MISC_BASE + 0x064)
+#define GMAC_CLK_SYNT (MISC_BASE + 0x068)
+#define GEN0_CLK_SYNT (MISC_BASE + 0x06C)
+#define GEN1_CLK_SYNT (MISC_BASE + 0x070)
+#define GEN2_CLK_SYNT (MISC_BASE + 0x074)
+#define GEN3_CLK_SYNT (MISC_BASE + 0x078)
+
+/* pll rate configuration table, in ascending order of rates */
+static struct pll_rate_tbl pll_rtbl[] = {
+ {.mode = 0, .m = 0x53, .n = 0x0C, .p = 0x1}, /* vco 332 & pll 166 MHz */
+ {.mode = 0, .m = 0x85, .n = 0x0C, .p = 0x1}, /* vco 532 & pll 266 MHz */
+ {.mode = 0, .m = 0xA6, .n = 0x0C, .p = 0x1}, /* vco 664 & pll 332 MHz */
+};
+
+/* aux rate configuration table, in ascending order of rates */
+static struct aux_rate_tbl aux_rtbl[] = {
+ /* For PLL1 = 332 MHz */
+ {.xscale = 2, .yscale = 27, .eq = 0}, /* 12.296 MHz */
+ {.xscale = 2, .yscale = 8, .eq = 0}, /* 41.5 MHz */
+ {.xscale = 2, .yscale = 4, .eq = 0}, /* 83 MHz */
+ {.xscale = 1, .yscale = 2, .eq = 1}, /* 166 MHz */
+};
+
+/* gpt rate configuration table, in ascending order of rates */
+static struct gpt_rate_tbl gpt_rtbl[] = {
+ /* For pll1 = 332 MHz */
+ {.mscale = 4, .nscale = 0}, /* 41.5 MHz */
+ {.mscale = 2, .nscale = 0}, /* 55.3 MHz */
+ {.mscale = 1, .nscale = 0}, /* 83 MHz */
+};
+
+/* clock parents */
+static const char *uart0_parents[] = { "pll3_48m_clk", "uart_synth_gate_clk", };
+static const char *firda_parents[] = { "pll3_48m_clk", "firda_synth_gate_clk",
+};
+static const char *gpt0_parents[] = { "pll3_48m_clk", "gpt0_synth_clk", };
+static const char *gpt1_parents[] = { "pll3_48m_clk", "gpt1_synth_clk", };
+static const char *gpt2_parents[] = { "pll3_48m_clk", "gpt2_synth_clk", };
+static const char *gen2_3_parents[] = { "pll1_clk", "pll2_clk", };
+static const char *ddr_parents[] = { "ahb_clk", "ahbmult2_clk", "none",
+ "pll2_clk", };
+
+#ifdef CONFIG_MACH_SPEAR300
+static void __init spear300_clk_init(void)
+{
+ struct clk *clk;
+
+ clk = clk_register_fixed_factor(NULL, "clcd_clk", "ras_pll3_48m_clk", 0,
+ 1, 1);
+ clk_register_clkdev(clk, NULL, "60000000.clcd");
+
+ clk = clk_register_fixed_factor(NULL, "fsmc_clk", "ras_ahb_clk", 0, 1,
+ 1);
+ clk_register_clkdev(clk, NULL, "94000000.flash");
+
+ clk = clk_register_fixed_factor(NULL, "sdhci_clk", "ras_ahb_clk", 0, 1,
+ 1);
+ clk_register_clkdev(clk, NULL, "70000000.sdhci");
+
+ clk = clk_register_fixed_factor(NULL, "gpio1_clk", "ras_apb_clk", 0, 1,
+ 1);
+ clk_register_clkdev(clk, NULL, "a9000000.gpio");
+
+ clk = clk_register_fixed_factor(NULL, "kbd_clk", "ras_apb_clk", 0, 1,
+ 1);
+ clk_register_clkdev(clk, NULL, "a0000000.kbd");
+}
+#endif
+
+/* array of all spear 310 clock lookups */
+#ifdef CONFIG_MACH_SPEAR310
+static void __init spear310_clk_init(void)
+{
+ struct clk *clk;
+
+ clk = clk_register_fixed_factor(NULL, "emi_clk", "ras_ahb_clk", 0, 1,
+ 1);
+ clk_register_clkdev(clk, "emi", NULL);
+
+ clk = clk_register_fixed_factor(NULL, "fsmc_clk", "ras_ahb_clk", 0, 1,
+ 1);
+ clk_register_clkdev(clk, NULL, "44000000.flash");
+
+ clk = clk_register_fixed_factor(NULL, "tdm_clk", "ras_ahb_clk", 0, 1,
+ 1);
+ clk_register_clkdev(clk, NULL, "tdm");
+
+ clk = clk_register_fixed_factor(NULL, "uart1_clk", "ras_apb_clk", 0, 1,
+ 1);
+ clk_register_clkdev(clk, NULL, "b2000000.serial");
+
+ clk = clk_register_fixed_factor(NULL, "uart2_clk", "ras_apb_clk", 0, 1,
+ 1);
+ clk_register_clkdev(clk, NULL, "b2080000.serial");
+
+ clk = clk_register_fixed_factor(NULL, "uart3_clk", "ras_apb_clk", 0, 1,
+ 1);
+ clk_register_clkdev(clk, NULL, "b2100000.serial");
+
+ clk = clk_register_fixed_factor(NULL, "uart4_clk", "ras_apb_clk", 0, 1,
+ 1);
+ clk_register_clkdev(clk, NULL, "b2180000.serial");
+
+ clk = clk_register_fixed_factor(NULL, "uart5_clk", "ras_apb_clk", 0, 1,
+ 1);
+ clk_register_clkdev(clk, NULL, "b2200000.serial");
+}
+#endif
+
+/* array of all spear 320 clock lookups */
+#ifdef CONFIG_MACH_SPEAR320
+ #define SMII_PCLK_SHIFT 18
+ #define SMII_PCLK_MASK 2
+ #define SMII_PCLK_VAL_PAD 0x0
+ #define SMII_PCLK_VAL_PLL2 0x1
+ #define SMII_PCLK_VAL_SYNTH0 0x2
+ #define SDHCI_PCLK_SHIFT 15
+ #define SDHCI_PCLK_MASK 1
+ #define SDHCI_PCLK_VAL_48M 0x0
+ #define SDHCI_PCLK_VAL_SYNTH3 0x1
+ #define I2S_REF_PCLK_SHIFT 8
+ #define I2S_REF_PCLK_MASK 1
+ #define I2S_REF_PCLK_SYNTH_VAL 0x1
+ #define I2S_REF_PCLK_PLL2_VAL 0x0
+ #define UART1_PCLK_SHIFT 6
+ #define UART1_PCLK_MASK 1
+ #define SPEAR320_UARTX_PCLK_VAL_SYNTH1 0x0
+ #define SPEAR320_UARTX_PCLK_VAL_APB 0x1
+
+static const char *i2s_ref_parents[] = { "ras_pll2_clk",
+ "ras_gen2_synth_gate_clk", };
+static const char *sdhci_parents[] = { "ras_pll3_48m_clk",
+ "ras_gen3_synth_gate_clk",
+};
+static const char *smii0_parents[] = { "smii_125m_pad", "ras_pll2_clk",
+ "ras_gen0_synth_gate_clk", };
+static const char *uartx_parents[] = { "ras_gen1_synth_gate_clk", "ras_apb_clk",
+};
+
+static void __init spear320_clk_init(void)
+{
+ struct clk *clk;
+
+ clk = clk_register_fixed_rate(NULL, "smii_125m_pad_clk", NULL,
+ CLK_IS_ROOT, 125000000);
+ clk_register_clkdev(clk, "smii_125m_pad", NULL);
+
+ clk = clk_register_fixed_factor(NULL, "clcd_clk", "ras_pll3_48m_clk", 0,
+ 1, 1);
+ clk_register_clkdev(clk, NULL, "90000000.clcd");
+
+ clk = clk_register_fixed_factor(NULL, "emi_clk", "ras_ahb_clk", 0, 1,
+ 1);
+ clk_register_clkdev(clk, "emi", NULL);
+
+ clk = clk_register_fixed_factor(NULL, "fsmc_clk", "ras_ahb_clk", 0, 1,
+ 1);
+ clk_register_clkdev(clk, NULL, "4c000000.flash");
+
+ clk = clk_register_fixed_factor(NULL, "i2c1_clk", "ras_ahb_clk", 0, 1,
+ 1);
+ clk_register_clkdev(clk, NULL, "a7000000.i2c");
+
+ clk = clk_register_fixed_factor(NULL, "pwm_clk", "ras_ahb_clk", 0, 1,
+ 1);
+ clk_register_clkdev(clk, "pwm", NULL);
+
+ clk = clk_register_fixed_factor(NULL, "ssp1_clk", "ras_ahb_clk", 0, 1,
+ 1);
+ clk_register_clkdev(clk, NULL, "a5000000.spi");
+
+ clk = clk_register_fixed_factor(NULL, "ssp2_clk", "ras_ahb_clk", 0, 1,
+ 1);
+ clk_register_clkdev(clk, NULL, "a6000000.spi");
+
+ clk = clk_register_fixed_factor(NULL, "can0_clk", "ras_apb_clk", 0, 1,
+ 1);
+ clk_register_clkdev(clk, NULL, "c_can_platform.0");
+
+ clk = clk_register_fixed_factor(NULL, "can1_clk", "ras_apb_clk", 0, 1,
+ 1);
+ clk_register_clkdev(clk, NULL, "c_can_platform.1");
+
+ clk = clk_register_fixed_factor(NULL, "i2s_clk", "ras_apb_clk", 0, 1,
+ 1);
+ clk_register_clkdev(clk, NULL, "i2s");
+
+ clk = clk_register_mux(NULL, "i2s_ref_clk", i2s_ref_parents,
+ ARRAY_SIZE(i2s_ref_parents), 0, SPEAR320_CONTROL_REG,
+ I2S_REF_PCLK_SHIFT, I2S_REF_PCLK_MASK, 0, &_lock);
+ clk_register_clkdev(clk, "i2s_ref_clk", NULL);
+
+ clk = clk_register_fixed_factor(NULL, "i2s_sclk", "i2s_ref_clk", 0, 1,
+ 4);
+ clk_register_clkdev(clk, "i2s_sclk", NULL);
+
+ clk = clk_register_mux(NULL, "rs485_clk", uartx_parents,
+ ARRAY_SIZE(uartx_parents), 0, SPEAR320_EXT_CTRL_REG,
+ SPEAR320_RS485_PCLK_SHIFT, SPEAR320_UARTX_PCLK_MASK, 0,
+ &_lock);
+ clk_register_clkdev(clk, NULL, "a9300000.serial");
+
+ clk = clk_register_mux(NULL, "sdhci_clk", sdhci_parents,
+ ARRAY_SIZE(sdhci_parents), 0, SPEAR320_CONTROL_REG,
+ SDHCI_PCLK_SHIFT, SDHCI_PCLK_MASK, 0, &_lock);
+ clk_register_clkdev(clk, NULL, "70000000.sdhci");
+
+ clk = clk_register_mux(NULL, "smii_pclk", smii0_parents,
+ ARRAY_SIZE(smii0_parents), 0, SPEAR320_CONTROL_REG,
+ SMII_PCLK_SHIFT, SMII_PCLK_MASK, 0, &_lock);
+ clk_register_clkdev(clk, NULL, "smii_pclk");
+
+ clk = clk_register_fixed_factor(NULL, "smii_clk", "smii_pclk", 0, 1, 1);
+ clk_register_clkdev(clk, NULL, "smii");
+
+ clk = clk_register_mux(NULL, "uart1_clk", uartx_parents,
+ ARRAY_SIZE(uartx_parents), 0, SPEAR320_CONTROL_REG,
+ UART1_PCLK_SHIFT, UART1_PCLK_MASK, 0, &_lock);
+ clk_register_clkdev(clk, NULL, "a3000000.serial");
+
+ clk = clk_register_mux(NULL, "uart2_clk", uartx_parents,
+ ARRAY_SIZE(uartx_parents), 0, SPEAR320_EXT_CTRL_REG,
+ SPEAR320_UART2_PCLK_SHIFT, SPEAR320_UARTX_PCLK_MASK, 0,
+ &_lock);
+ clk_register_clkdev(clk, NULL, "a4000000.serial");
+
+ clk = clk_register_mux(NULL, "uart3_clk", uartx_parents,
+ ARRAY_SIZE(uartx_parents), 0, SPEAR320_EXT_CTRL_REG,
+ SPEAR320_UART3_PCLK_SHIFT, SPEAR320_UARTX_PCLK_MASK, 0,
+ &_lock);
+ clk_register_clkdev(clk, NULL, "a9100000.serial");
+
+ clk = clk_register_mux(NULL, "uart4_clk", uartx_parents,
+ ARRAY_SIZE(uartx_parents), 0, SPEAR320_EXT_CTRL_REG,
+ SPEAR320_UART4_PCLK_SHIFT, SPEAR320_UARTX_PCLK_MASK, 0,
+ &_lock);
+ clk_register_clkdev(clk, NULL, "a9200000.serial");
+
+ clk = clk_register_mux(NULL, "uart5_clk", uartx_parents,
+ ARRAY_SIZE(uartx_parents), 0, SPEAR320_EXT_CTRL_REG,
+ SPEAR320_UART5_PCLK_SHIFT, SPEAR320_UARTX_PCLK_MASK, 0,
+ &_lock);
+ clk_register_clkdev(clk, NULL, "60000000.serial");
+
+ clk = clk_register_mux(NULL, "uart6_clk", uartx_parents,
+ ARRAY_SIZE(uartx_parents), 0, SPEAR320_EXT_CTRL_REG,
+ SPEAR320_UART6_PCLK_SHIFT, SPEAR320_UARTX_PCLK_MASK, 0,
+ &_lock);
+ clk_register_clkdev(clk, NULL, "60100000.serial");
+}
+#endif
+
+void __init spear3xx_clk_init(void)
+{
+ struct clk *clk, *clk1;
+
+ clk = clk_register_fixed_rate(NULL, "apb_pclk", NULL, CLK_IS_ROOT, 0);
+ clk_register_clkdev(clk, "apb_pclk", NULL);
+
+ clk = clk_register_fixed_rate(NULL, "osc_32k_clk", NULL, CLK_IS_ROOT,
+ 32000);
+ clk_register_clkdev(clk, "osc_32k_clk", NULL);
+
+ clk = clk_register_fixed_rate(NULL, "osc_24m_clk", NULL, CLK_IS_ROOT,
+ 24000000);
+ clk_register_clkdev(clk, "osc_24m_clk", NULL);
+
+ /* clock derived from 32 KHz osc clk */
+ clk = clk_register_gate(NULL, "rtc-spear", "osc_32k_clk", 0,
+ PERIP1_CLK_ENB, RTC_CLK_ENB, 0, &_lock);
+ clk_register_clkdev(clk, NULL, "fc900000.rtc");
+
+ /* clock derived from 24 MHz osc clk */
+ clk = clk_register_fixed_rate(NULL, "pll3_48m_clk", "osc_24m_clk", 0,
+ 48000000);
+ clk_register_clkdev(clk, "pll3_48m_clk", NULL);
+
+ clk = clk_register_fixed_factor(NULL, "wdt_clk", "osc_24m_clk", 0, 1,
+ 1);
+ clk_register_clkdev(clk, NULL, "fc880000.wdt");
+
+ clk = clk_register_vco_pll("vco1_clk", "pll1_clk", NULL,
+ "osc_24m_clk", 0, PLL1_CTR, PLL1_FRQ, pll_rtbl,
+ ARRAY_SIZE(pll_rtbl), &_lock, &clk1, NULL);
+ clk_register_clkdev(clk, "vco1_clk", NULL);
+ clk_register_clkdev(clk1, "pll1_clk", NULL);
+
+ clk = clk_register_vco_pll("vco2_clk", "pll2_clk", NULL,
+ "osc_24m_clk", 0, PLL2_CTR, PLL2_FRQ, pll_rtbl,
+ ARRAY_SIZE(pll_rtbl), &_lock, &clk1, NULL);
+ clk_register_clkdev(clk, "vco2_clk", NULL);
+ clk_register_clkdev(clk1, "pll2_clk", NULL);
+
+ /* clock derived from pll1 clk */
+ clk = clk_register_fixed_factor(NULL, "cpu_clk", "pll1_clk", 0, 1, 1);
+ clk_register_clkdev(clk, "cpu_clk", NULL);
+
+ clk = clk_register_divider(NULL, "ahb_clk", "pll1_clk",
+ CLK_SET_RATE_PARENT, CORE_CLK_CFG, HCLK_RATIO_SHIFT,
+ HCLK_RATIO_MASK, 0, &_lock);
+ clk_register_clkdev(clk, "ahb_clk", NULL);
+
+ clk = clk_register_aux("uart_synth_clk", "uart_synth_gate_clk",
+ "pll1_clk", 0, UART_CLK_SYNT, NULL, aux_rtbl,
+ ARRAY_SIZE(aux_rtbl), &_lock, &clk1);
+ clk_register_clkdev(clk, "uart_synth_clk", NULL);
+ clk_register_clkdev(clk1, "uart_synth_gate_clk", NULL);
+
+ clk = clk_register_mux(NULL, "uart0_mux_clk", uart0_parents,
+ ARRAY_SIZE(uart0_parents), 0, PERIP_CLK_CFG,
+ UART_CLK_SHIFT, UART_CLK_MASK, 0, &_lock);
+ clk_register_clkdev(clk, "uart0_mux_clk", NULL);
+
+ clk = clk_register_gate(NULL, "uart0", "uart0_mux_clk", 0,
+ PERIP1_CLK_ENB, UART_CLK_ENB, 0, &_lock);
+ clk_register_clkdev(clk, NULL, "d0000000.serial");
+
+ clk = clk_register_aux("firda_synth_clk", "firda_synth_gate_clk",
+ "pll1_clk", 0, FIRDA_CLK_SYNT, NULL, aux_rtbl,
+ ARRAY_SIZE(aux_rtbl), &_lock, &clk1);
+ clk_register_clkdev(clk, "firda_synth_clk", NULL);
+ clk_register_clkdev(clk1, "firda_synth_gate_clk", NULL);
+
+ clk = clk_register_mux(NULL, "firda_mux_clk", firda_parents,
+ ARRAY_SIZE(firda_parents), 0, PERIP_CLK_CFG,
+ FIRDA_CLK_SHIFT, FIRDA_CLK_MASK, 0, &_lock);
+ clk_register_clkdev(clk, "firda_mux_clk", NULL);
+
+ clk = clk_register_gate(NULL, "firda_clk", "firda_mux_clk", 0,
+ PERIP1_CLK_ENB, FIRDA_CLK_ENB, 0, &_lock);
+ clk_register_clkdev(clk, NULL, "firda");
+
+ /* gpt clocks */
+ clk_register_gpt("gpt0_synth_clk", "pll1_clk", 0, PRSC0_CLK_CFG,
+ gpt_rtbl, ARRAY_SIZE(gpt_rtbl), &_lock);
+ clk = clk_register_mux(NULL, "gpt0_clk", gpt0_parents,
+ ARRAY_SIZE(gpt0_parents), 0, PERIP_CLK_CFG,
+ GPT0_CLK_SHIFT, GPT_CLK_MASK, 0, &_lock);
+ clk_register_clkdev(clk, NULL, "gpt0");
+
+ clk_register_gpt("gpt1_synth_clk", "pll1_clk", 0, PRSC1_CLK_CFG,
+ gpt_rtbl, ARRAY_SIZE(gpt_rtbl), &_lock);
+ clk = clk_register_mux(NULL, "gpt1_mux_clk", gpt1_parents,
+ ARRAY_SIZE(gpt1_parents), 0, PERIP_CLK_CFG,
+ GPT1_CLK_SHIFT, GPT_CLK_MASK, 0, &_lock);
+ clk_register_clkdev(clk, "gpt1_mux_clk", NULL);
+ clk = clk_register_gate(NULL, "gpt1_clk", "gpt1_mux_clk", 0,
+ PERIP1_CLK_ENB, GPT1_CLK_ENB, 0, &_lock);
+ clk_register_clkdev(clk, NULL, "gpt1");
+
+ clk_register_gpt("gpt2_synth_clk", "pll1_clk", 0, PRSC2_CLK_CFG,
+ gpt_rtbl, ARRAY_SIZE(gpt_rtbl), &_lock);
+ clk = clk_register_mux(NULL, "gpt2_mux_clk", gpt2_parents,
+ ARRAY_SIZE(gpt2_parents), 0, PERIP_CLK_CFG,
+ GPT2_CLK_SHIFT, GPT_CLK_MASK, 0, &_lock);
+ clk_register_clkdev(clk, "gpt2_mux_clk", NULL);
+ clk = clk_register_gate(NULL, "gpt2_clk", "gpt2_mux_clk", 0,
+ PERIP1_CLK_ENB, GPT2_CLK_ENB, 0, &_lock);
+ clk_register_clkdev(clk, NULL, "gpt2");
+
+ /* general synths clocks */
+ clk = clk_register_aux("gen0_synth_clk", "gen0_synth_gate_clk",
+ "pll1_clk", 0, GEN0_CLK_SYNT, NULL, aux_rtbl,
+ ARRAY_SIZE(aux_rtbl), &_lock, &clk1);
+ clk_register_clkdev(clk, "gen0_synth_clk", NULL);
+ clk_register_clkdev(clk1, "gen0_synth_gate_clk", NULL);
+
+ clk = clk_register_aux("gen1_synth_clk", "gen1_synth_gate_clk",
+ "pll1_clk", 0, GEN1_CLK_SYNT, NULL, aux_rtbl,
+ ARRAY_SIZE(aux_rtbl), &_lock, &clk1);
+ clk_register_clkdev(clk, "gen1_synth_clk", NULL);
+ clk_register_clkdev(clk1, "gen1_synth_gate_clk", NULL);
+
+ clk = clk_register_mux(NULL, "gen2_3_parent_clk", gen2_3_parents,
+ ARRAY_SIZE(gen2_3_parents), 0, CORE_CLK_CFG,
+ GEN_SYNTH2_3_CLK_SHIFT, GEN_SYNTH2_3_CLK_MASK, 0,
+ &_lock);
+ clk_register_clkdev(clk, "gen2_3_parent_clk", NULL);
+
+ clk = clk_register_aux("gen2_synth_clk", "gen2_synth_gate_clk",
+ "gen2_3_parent_clk", 0, GEN2_CLK_SYNT, NULL, aux_rtbl,
+ ARRAY_SIZE(aux_rtbl), &_lock, &clk1);
+ clk_register_clkdev(clk, "gen2_synth_clk", NULL);
+ clk_register_clkdev(clk1, "gen2_synth_gate_clk", NULL);
+
+ clk = clk_register_aux("gen3_synth_clk", "gen3_synth_gate_clk",
+ "gen2_3_parent_clk", 0, GEN3_CLK_SYNT, NULL, aux_rtbl,
+ ARRAY_SIZE(aux_rtbl), &_lock, &clk1);
+ clk_register_clkdev(clk, "gen3_synth_clk", NULL);
+ clk_register_clkdev(clk1, "gen3_synth_gate_clk", NULL);
+
+ /* clock derived from pll3 clk */
+ clk = clk_register_gate(NULL, "usbh_clk", "pll3_48m_clk", 0,
+ PERIP1_CLK_ENB, USBH_CLK_ENB, 0, &_lock);
+ clk_register_clkdev(clk, "usbh_clk", NULL);
+
+ clk = clk_register_fixed_factor(NULL, "usbh.0_clk", "usbh_clk", 0, 1,
+ 1);
+ clk_register_clkdev(clk, "usbh.0_clk", NULL);
+
+ clk = clk_register_fixed_factor(NULL, "usbh.1_clk", "usbh_clk", 0, 1,
+ 1);
+ clk_register_clkdev(clk, "usbh.1_clk", NULL);
+
+ clk = clk_register_gate(NULL, "usbd_clk", "pll3_48m_clk", 0,
+ PERIP1_CLK_ENB, USBD_CLK_ENB, 0, &_lock);
+ clk_register_clkdev(clk, NULL, "designware_udc");
+
+ /* clock derived from ahb clk */
+ clk = clk_register_fixed_factor(NULL, "ahbmult2_clk", "ahb_clk", 0, 2,
+ 1);
+ clk_register_clkdev(clk, "ahbmult2_clk", NULL);
+
+ clk = clk_register_mux(NULL, "ddr_clk", ddr_parents,
+ ARRAY_SIZE(ddr_parents), 0, PLL_CLK_CFG, MCTR_CLK_SHIFT,
+ MCTR_CLK_MASK, 0, &_lock);
+ clk_register_clkdev(clk, "ddr_clk", NULL);
+
+ clk = clk_register_divider(NULL, "apb_clk", "ahb_clk",
+ CLK_SET_RATE_PARENT, CORE_CLK_CFG, PCLK_RATIO_SHIFT,
+ PCLK_RATIO_MASK, 0, &_lock);
+ clk_register_clkdev(clk, "apb_clk", NULL);
+
+ clk = clk_register_gate(NULL, "amem_clk", "ahb_clk", 0, AMEM_CLK_CFG,
+ AMEM_CLK_ENB, 0, &_lock);
+ clk_register_clkdev(clk, "amem_clk", NULL);
+
+ clk = clk_register_gate(NULL, "c3_clk", "ahb_clk", 0, PERIP1_CLK_ENB,
+ C3_CLK_ENB, 0, &_lock);
+ clk_register_clkdev(clk, NULL, "c3_clk");
+
+ clk = clk_register_gate(NULL, "dma_clk", "ahb_clk", 0, PERIP1_CLK_ENB,
+ DMA_CLK_ENB, 0, &_lock);
+ clk_register_clkdev(clk, NULL, "fc400000.dma");
+
+ clk = clk_register_gate(NULL, "gmac_clk", "ahb_clk", 0, PERIP1_CLK_ENB,
+ GMAC_CLK_ENB, 0, &_lock);
+ clk_register_clkdev(clk, NULL, "e0800000.eth");
+
+ clk = clk_register_gate(NULL, "i2c0_clk", "ahb_clk", 0, PERIP1_CLK_ENB,
+ I2C_CLK_ENB, 0, &_lock);
+ clk_register_clkdev(clk, NULL, "d0180000.i2c");
+
+ clk = clk_register_gate(NULL, "jpeg_clk", "ahb_clk", 0, PERIP1_CLK_ENB,
+ JPEG_CLK_ENB, 0, &_lock);
+ clk_register_clkdev(clk, NULL, "jpeg");
+
+ clk = clk_register_gate(NULL, "smi_clk", "ahb_clk", 0, PERIP1_CLK_ENB,
+ SMI_CLK_ENB, 0, &_lock);
+ clk_register_clkdev(clk, NULL, "fc000000.flash");
+
+ /* clock derived from apb clk */
+ clk = clk_register_gate(NULL, "adc_clk", "apb_clk", 0, PERIP1_CLK_ENB,
+ ADC_CLK_ENB, 0, &_lock);
+ clk_register_clkdev(clk, NULL, "adc");
+
+ clk = clk_register_gate(NULL, "gpio0_clk", "apb_clk", 0, PERIP1_CLK_ENB,
+ GPIO_CLK_ENB, 0, &_lock);
+ clk_register_clkdev(clk, NULL, "fc980000.gpio");
+
+ clk = clk_register_gate(NULL, "ssp0_clk", "apb_clk", 0, PERIP1_CLK_ENB,
+ SSP_CLK_ENB, 0, &_lock);
+ clk_register_clkdev(clk, NULL, "d0100000.spi");
+
+ /* RAS clk enable */
+ clk = clk_register_gate(NULL, "ras_ahb_clk", "ahb_clk", 0, RAS_CLK_ENB,
+ RAS_AHB_CLK_ENB, 0, &_lock);
+ clk_register_clkdev(clk, "ras_ahb_clk", NULL);
+
+ clk = clk_register_gate(NULL, "ras_apb_clk", "apb_clk", 0, RAS_CLK_ENB,
+ RAS_APB_CLK_ENB, 0, &_lock);
+ clk_register_clkdev(clk, "ras_apb_clk", NULL);
+
+ clk = clk_register_gate(NULL, "ras_32k_clk", "osc_32k_clk", 0,
+ RAS_CLK_ENB, RAS_32K_CLK_ENB, 0, &_lock);
+ clk_register_clkdev(clk, "ras_32k_clk", NULL);
+
+ clk = clk_register_gate(NULL, "ras_24m_clk", "osc_24m_clk", 0,
+ RAS_CLK_ENB, RAS_24M_CLK_ENB, 0, &_lock);
+ clk_register_clkdev(clk, "ras_24m_clk", NULL);
+
+ clk = clk_register_gate(NULL, "ras_pll1_clk", "pll1_clk", 0,
+ RAS_CLK_ENB, RAS_PLL1_CLK_ENB, 0, &_lock);
+ clk_register_clkdev(clk, "ras_pll1_clk", NULL);
+
+ clk = clk_register_gate(NULL, "ras_pll2_clk", "pll2_clk", 0,
+ RAS_CLK_ENB, RAS_PLL2_CLK_ENB, 0, &_lock);
+ clk_register_clkdev(clk, "ras_pll2_clk", NULL);
+
+ clk = clk_register_gate(NULL, "ras_pll3_48m_clk", "pll3_48m_clk", 0,
+ RAS_CLK_ENB, RAS_48M_CLK_ENB, 0, &_lock);
+ clk_register_clkdev(clk, "ras_pll3_48m_clk", NULL);
+
+ clk = clk_register_gate(NULL, "ras_gen0_synth_gate_clk",
+ "gen0_synth_gate_clk", 0, RAS_CLK_ENB,
+ RAS_SYNT0_CLK_ENB, 0, &_lock);
+ clk_register_clkdev(clk, "ras_gen0_synth_gate_clk", NULL);
+
+ clk = clk_register_gate(NULL, "ras_gen1_synth_gate_clk",
+ "gen1_synth_gate_clk", 0, RAS_CLK_ENB,
+ RAS_SYNT1_CLK_ENB, 0, &_lock);
+ clk_register_clkdev(clk, "ras_gen1_synth_gate_clk", NULL);
+
+ clk = clk_register_gate(NULL, "ras_gen2_synth_gate_clk",
+ "gen2_synth_gate_clk", 0, RAS_CLK_ENB,
+ RAS_SYNT2_CLK_ENB, 0, &_lock);
+ clk_register_clkdev(clk, "ras_gen2_synth_gate_clk", NULL);
+
+ clk = clk_register_gate(NULL, "ras_gen3_synth_gate_clk",
+ "gen3_synth_gate_clk", 0, RAS_CLK_ENB,
+ RAS_SYNT3_CLK_ENB, 0, &_lock);
+ clk_register_clkdev(clk, "ras_gen3_synth_gate_clk", NULL);
+
+ if (of_machine_is_compatible("st,spear300"))
+ spear300_clk_init();
+ else if (of_machine_is_compatible("st,spear310"))
+ spear310_clk_init();
+ else if (of_machine_is_compatible("st,spear320"))
+ spear320_clk_init();
+}
diff --git a/drivers/clk/spear/spear6xx_clock.c b/drivers/clk/spear/spear6xx_clock.c
new file mode 100644
index 00000000000..f9a20b38230
--- /dev/null
+++ b/drivers/clk/spear/spear6xx_clock.c
@@ -0,0 +1,342 @@
+/*
+ * SPEAr6xx machines clock framework source file
+ *
+ * Copyright (C) 2012 ST Microelectronics
+ * Viresh Kumar <viresh.kumar@st.com>
+ *
+ * This file is licensed under the terms of the GNU General Public
+ * License version 2. This program is licensed "as is" without any
+ * warranty of any kind, whether express or implied.
+ */
+
+#include <linux/clk.h>
+#include <linux/clkdev.h>
+#include <linux/io.h>
+#include <linux/spinlock_types.h>
+#include <mach/misc_regs.h>
+#include "clk.h"
+
+static DEFINE_SPINLOCK(_lock);
+
+#define PLL1_CTR (MISC_BASE + 0x008)
+#define PLL1_FRQ (MISC_BASE + 0x00C)
+#define PLL2_CTR (MISC_BASE + 0x014)
+#define PLL2_FRQ (MISC_BASE + 0x018)
+#define PLL_CLK_CFG (MISC_BASE + 0x020)
+ /* PLL_CLK_CFG register masks */
+ #define MCTR_CLK_SHIFT 28
+ #define MCTR_CLK_MASK 3
+
+#define CORE_CLK_CFG (MISC_BASE + 0x024)
+ /* CORE CLK CFG register masks */
+ #define HCLK_RATIO_SHIFT 10
+ #define HCLK_RATIO_MASK 2
+ #define PCLK_RATIO_SHIFT 8
+ #define PCLK_RATIO_MASK 2
+
+#define PERIP_CLK_CFG (MISC_BASE + 0x028)
+ /* PERIP_CLK_CFG register masks */
+ #define CLCD_CLK_SHIFT 2
+ #define CLCD_CLK_MASK 2
+ #define UART_CLK_SHIFT 4
+ #define UART_CLK_MASK 1
+ #define FIRDA_CLK_SHIFT 5
+ #define FIRDA_CLK_MASK 2
+ #define GPT0_CLK_SHIFT 8
+ #define GPT1_CLK_SHIFT 10
+ #define GPT2_CLK_SHIFT 11
+ #define GPT3_CLK_SHIFT 12
+ #define GPT_CLK_MASK 1
+
+#define PERIP1_CLK_ENB (MISC_BASE + 0x02C)
+ /* PERIP1_CLK_ENB register masks */
+ #define UART0_CLK_ENB 3
+ #define UART1_CLK_ENB 4
+ #define SSP0_CLK_ENB 5
+ #define SSP1_CLK_ENB 6
+ #define I2C_CLK_ENB 7
+ #define JPEG_CLK_ENB 8
+ #define FSMC_CLK_ENB 9
+ #define FIRDA_CLK_ENB 10
+ #define GPT2_CLK_ENB 11
+ #define GPT3_CLK_ENB 12
+ #define GPIO2_CLK_ENB 13
+ #define SSP2_CLK_ENB 14
+ #define ADC_CLK_ENB 15
+ #define GPT1_CLK_ENB 11
+ #define RTC_CLK_ENB 17
+ #define GPIO1_CLK_ENB 18
+ #define DMA_CLK_ENB 19
+ #define SMI_CLK_ENB 21
+ #define CLCD_CLK_ENB 22
+ #define GMAC_CLK_ENB 23
+ #define USBD_CLK_ENB 24
+ #define USBH0_CLK_ENB 25
+ #define USBH1_CLK_ENB 26
+
+#define PRSC0_CLK_CFG (MISC_BASE + 0x044)
+#define PRSC1_CLK_CFG (MISC_BASE + 0x048)
+#define PRSC2_CLK_CFG (MISC_BASE + 0x04C)
+
+#define CLCD_CLK_SYNT (MISC_BASE + 0x05C)
+#define FIRDA_CLK_SYNT (MISC_BASE + 0x060)
+#define UART_CLK_SYNT (MISC_BASE + 0x064)
+
+/* vco rate configuration table, in ascending order of rates */
+static struct pll_rate_tbl pll_rtbl[] = {
+ {.mode = 0, .m = 0x53, .n = 0x0F, .p = 0x1}, /* vco 332 & pll 166 MHz */
+ {.mode = 0, .m = 0x85, .n = 0x0F, .p = 0x1}, /* vco 532 & pll 266 MHz */
+ {.mode = 0, .m = 0xA6, .n = 0x0F, .p = 0x1}, /* vco 664 & pll 332 MHz */
+};
+
+/* aux rate configuration table, in ascending order of rates */
+static struct aux_rate_tbl aux_rtbl[] = {
+ /* For PLL1 = 332 MHz */
+ {.xscale = 2, .yscale = 8, .eq = 0}, /* 41.5 MHz */
+ {.xscale = 2, .yscale = 4, .eq = 0}, /* 83 MHz */
+ {.xscale = 1, .yscale = 2, .eq = 1}, /* 166 MHz */
+};
+
+static const char *clcd_parents[] = { "pll3_48m_clk", "clcd_synth_gate_clk", };
+static const char *firda_parents[] = { "pll3_48m_clk", "firda_synth_gate_clk",
+};
+static const char *uart_parents[] = { "pll3_48m_clk", "uart_synth_gate_clk", };
+static const char *gpt0_1_parents[] = { "pll3_48m_clk", "gpt0_1_synth_clk", };
+static const char *gpt2_parents[] = { "pll3_48m_clk", "gpt2_synth_clk", };
+static const char *gpt3_parents[] = { "pll3_48m_clk", "gpt3_synth_clk", };
+static const char *ddr_parents[] = { "ahb_clk", "ahbmult2_clk", "none",
+ "pll2_clk", };
+
+/* gpt rate configuration table, in ascending order of rates */
+static struct gpt_rate_tbl gpt_rtbl[] = {
+ /* For pll1 = 332 MHz */
+ {.mscale = 4, .nscale = 0}, /* 41.5 MHz */
+ {.mscale = 2, .nscale = 0}, /* 55.3 MHz */
+ {.mscale = 1, .nscale = 0}, /* 83 MHz */
+};
+
+void __init spear6xx_clk_init(void)
+{
+ struct clk *clk, *clk1;
+
+ clk = clk_register_fixed_rate(NULL, "apb_pclk", NULL, CLK_IS_ROOT, 0);
+ clk_register_clkdev(clk, "apb_pclk", NULL);
+
+ clk = clk_register_fixed_rate(NULL, "osc_32k_clk", NULL, CLK_IS_ROOT,
+ 32000);
+ clk_register_clkdev(clk, "osc_32k_clk", NULL);
+
+ clk = clk_register_fixed_rate(NULL, "osc_30m_clk", NULL, CLK_IS_ROOT,
+ 30000000);
+ clk_register_clkdev(clk, "osc_30m_clk", NULL);
+
+ /* clock derived from 32 KHz osc clk */
+ clk = clk_register_gate(NULL, "rtc_spear", "osc_32k_clk", 0,
+ PERIP1_CLK_ENB, RTC_CLK_ENB, 0, &_lock);
+ clk_register_clkdev(clk, NULL, "rtc-spear");
+
+ /* clock derived from 30 MHz osc clk */
+ clk = clk_register_fixed_rate(NULL, "pll3_48m_clk", "osc_24m_clk", 0,
+ 48000000);
+ clk_register_clkdev(clk, "pll3_48m_clk", NULL);
+
+ clk = clk_register_vco_pll("vco1_clk", "pll1_clk", NULL, "osc_30m_clk",
+ 0, PLL1_CTR, PLL1_FRQ, pll_rtbl, ARRAY_SIZE(pll_rtbl),
+ &_lock, &clk1, NULL);
+ clk_register_clkdev(clk, "vco1_clk", NULL);
+ clk_register_clkdev(clk1, "pll1_clk", NULL);
+
+ clk = clk_register_vco_pll("vco2_clk", "pll2_clk", NULL,
+ "osc_30m_clk", 0, PLL2_CTR, PLL2_FRQ, pll_rtbl,
+ ARRAY_SIZE(pll_rtbl), &_lock, &clk1, NULL);
+ clk_register_clkdev(clk, "vco2_clk", NULL);
+ clk_register_clkdev(clk1, "pll2_clk", NULL);
+
+ clk = clk_register_fixed_factor(NULL, "wdt_clk", "osc_30m_clk", 0, 1,
+ 1);
+ clk_register_clkdev(clk, NULL, "wdt");
+
+ /* clock derived from pll1 clk */
+ clk = clk_register_fixed_factor(NULL, "cpu_clk", "pll1_clk", 0, 1, 1);
+ clk_register_clkdev(clk, "cpu_clk", NULL);
+
+ clk = clk_register_divider(NULL, "ahb_clk", "pll1_clk",
+ CLK_SET_RATE_PARENT, CORE_CLK_CFG, HCLK_RATIO_SHIFT,
+ HCLK_RATIO_MASK, 0, &_lock);
+ clk_register_clkdev(clk, "ahb_clk", NULL);
+
+ clk = clk_register_aux("uart_synth_clk", "uart_synth_gate_clk",
+ "pll1_clk", 0, UART_CLK_SYNT, NULL, aux_rtbl,
+ ARRAY_SIZE(aux_rtbl), &_lock, &clk1);
+ clk_register_clkdev(clk, "uart_synth_clk", NULL);
+ clk_register_clkdev(clk1, "uart_synth_gate_clk", NULL);
+
+ clk = clk_register_mux(NULL, "uart_mux_clk", uart_parents,
+ ARRAY_SIZE(uart_parents), 0, PERIP_CLK_CFG,
+ UART_CLK_SHIFT, UART_CLK_MASK, 0, &_lock);
+ clk_register_clkdev(clk, "uart_mux_clk", NULL);
+
+ clk = clk_register_gate(NULL, "uart0", "uart_mux_clk", 0,
+ PERIP1_CLK_ENB, UART0_CLK_ENB, 0, &_lock);
+ clk_register_clkdev(clk, NULL, "d0000000.serial");
+
+ clk = clk_register_gate(NULL, "uart1", "uart_mux_clk", 0,
+ PERIP1_CLK_ENB, UART1_CLK_ENB, 0, &_lock);
+ clk_register_clkdev(clk, NULL, "d0080000.serial");
+
+ clk = clk_register_aux("firda_synth_clk", "firda_synth_gate_clk",
+ "pll1_clk", 0, FIRDA_CLK_SYNT, NULL, aux_rtbl,
+ ARRAY_SIZE(aux_rtbl), &_lock, &clk1);
+ clk_register_clkdev(clk, "firda_synth_clk", NULL);
+ clk_register_clkdev(clk1, "firda_synth_gate_clk", NULL);
+
+ clk = clk_register_mux(NULL, "firda_mux_clk", firda_parents,
+ ARRAY_SIZE(firda_parents), 0, PERIP_CLK_CFG,
+ FIRDA_CLK_SHIFT, FIRDA_CLK_MASK, 0, &_lock);
+ clk_register_clkdev(clk, "firda_mux_clk", NULL);
+
+ clk = clk_register_gate(NULL, "firda_clk", "firda_mux_clk", 0,
+ PERIP1_CLK_ENB, FIRDA_CLK_ENB, 0, &_lock);
+ clk_register_clkdev(clk, NULL, "firda");
+
+ clk = clk_register_aux("clcd_synth_clk", "clcd_synth_gate_clk",
+ "pll1_clk", 0, CLCD_CLK_SYNT, NULL, aux_rtbl,
+ ARRAY_SIZE(aux_rtbl), &_lock, &clk1);
+ clk_register_clkdev(clk, "clcd_synth_clk", NULL);
+ clk_register_clkdev(clk1, "clcd_synth_gate_clk", NULL);
+
+ clk = clk_register_mux(NULL, "clcd_mux_clk", clcd_parents,
+ ARRAY_SIZE(clcd_parents), 0, PERIP_CLK_CFG,
+ CLCD_CLK_SHIFT, CLCD_CLK_MASK, 0, &_lock);
+ clk_register_clkdev(clk, "clcd_mux_clk", NULL);
+
+ clk = clk_register_gate(NULL, "clcd_clk", "clcd_mux_clk", 0,
+ PERIP1_CLK_ENB, CLCD_CLK_ENB, 0, &_lock);
+ clk_register_clkdev(clk, NULL, "clcd");
+
+ /* gpt clocks */
+ clk = clk_register_gpt("gpt0_1_synth_clk", "pll1_clk", 0, PRSC0_CLK_CFG,
+ gpt_rtbl, ARRAY_SIZE(gpt_rtbl), &_lock);
+ clk_register_clkdev(clk, "gpt0_1_synth_clk", NULL);
+
+ clk = clk_register_mux(NULL, "gpt0_mux_clk", gpt0_1_parents,
+ ARRAY_SIZE(gpt0_1_parents), 0, PERIP_CLK_CFG,
+ GPT0_CLK_SHIFT, GPT_CLK_MASK, 0, &_lock);
+ clk_register_clkdev(clk, NULL, "gpt0");
+
+ clk = clk_register_mux(NULL, "gpt1_mux_clk", gpt0_1_parents,
+ ARRAY_SIZE(gpt0_1_parents), 0, PERIP_CLK_CFG,
+ GPT1_CLK_SHIFT, GPT_CLK_MASK, 0, &_lock);
+ clk_register_clkdev(clk, "gpt1_mux_clk", NULL);
+
+ clk = clk_register_gate(NULL, "gpt1_clk", "gpt1_mux_clk", 0,
+ PERIP1_CLK_ENB, GPT1_CLK_ENB, 0, &_lock);
+ clk_register_clkdev(clk, NULL, "gpt1");
+
+ clk = clk_register_gpt("gpt2_synth_clk", "pll1_clk", 0, PRSC1_CLK_CFG,
+ gpt_rtbl, ARRAY_SIZE(gpt_rtbl), &_lock);
+ clk_register_clkdev(clk, "gpt2_synth_clk", NULL);
+
+ clk = clk_register_mux(NULL, "gpt2_mux_clk", gpt2_parents,
+ ARRAY_SIZE(gpt2_parents), 0, PERIP_CLK_CFG,
+ GPT2_CLK_SHIFT, GPT_CLK_MASK, 0, &_lock);
+ clk_register_clkdev(clk, "gpt2_mux_clk", NULL);
+
+ clk = clk_register_gate(NULL, "gpt2_clk", "gpt2_mux_clk", 0,
+ PERIP1_CLK_ENB, GPT2_CLK_ENB, 0, &_lock);
+ clk_register_clkdev(clk, NULL, "gpt2");
+
+ clk = clk_register_gpt("gpt3_synth_clk", "pll1_clk", 0, PRSC2_CLK_CFG,
+ gpt_rtbl, ARRAY_SIZE(gpt_rtbl), &_lock);
+ clk_register_clkdev(clk, "gpt3_synth_clk", NULL);
+
+ clk = clk_register_mux(NULL, "gpt3_mux_clk", gpt3_parents,
+ ARRAY_SIZE(gpt3_parents), 0, PERIP_CLK_CFG,
+ GPT3_CLK_SHIFT, GPT_CLK_MASK, 0, &_lock);
+ clk_register_clkdev(clk, "gpt3_mux_clk", NULL);
+
+ clk = clk_register_gate(NULL, "gpt3_clk", "gpt3_mux_clk", 0,
+ PERIP1_CLK_ENB, GPT3_CLK_ENB, 0, &_lock);
+ clk_register_clkdev(clk, NULL, "gpt3");
+
+ /* clock derived from pll3 clk */
+ clk = clk_register_gate(NULL, "usbh0_clk", "pll3_48m_clk", 0,
+ PERIP1_CLK_ENB, USBH0_CLK_ENB, 0, &_lock);
+ clk_register_clkdev(clk, NULL, "usbh.0_clk");
+
+ clk = clk_register_gate(NULL, "usbh1_clk", "pll3_48m_clk", 0,
+ PERIP1_CLK_ENB, USBH1_CLK_ENB, 0, &_lock);
+ clk_register_clkdev(clk, NULL, "usbh.1_clk");
+
+ clk = clk_register_gate(NULL, "usbd_clk", "pll3_48m_clk", 0,
+ PERIP1_CLK_ENB, USBD_CLK_ENB, 0, &_lock);
+ clk_register_clkdev(clk, NULL, "designware_udc");
+
+ /* clock derived from ahb clk */
+ clk = clk_register_fixed_factor(NULL, "ahbmult2_clk", "ahb_clk", 0, 2,
+ 1);
+ clk_register_clkdev(clk, "ahbmult2_clk", NULL);
+
+ clk = clk_register_mux(NULL, "ddr_clk", ddr_parents,
+ ARRAY_SIZE(ddr_parents),
+ 0, PLL_CLK_CFG, MCTR_CLK_SHIFT, MCTR_CLK_MASK, 0,
+ &_lock);
+ clk_register_clkdev(clk, "ddr_clk", NULL);
+
+ clk = clk_register_divider(NULL, "apb_clk", "ahb_clk",
+ CLK_SET_RATE_PARENT, CORE_CLK_CFG, PCLK_RATIO_SHIFT,
+ PCLK_RATIO_MASK, 0, &_lock);
+ clk_register_clkdev(clk, "apb_clk", NULL);
+
+ clk = clk_register_gate(NULL, "dma_clk", "ahb_clk", 0, PERIP1_CLK_ENB,
+ DMA_CLK_ENB, 0, &_lock);
+ clk_register_clkdev(clk, NULL, "fc400000.dma");
+
+ clk = clk_register_gate(NULL, "fsmc_clk", "ahb_clk", 0, PERIP1_CLK_ENB,
+ FSMC_CLK_ENB, 0, &_lock);
+ clk_register_clkdev(clk, NULL, "d1800000.flash");
+
+ clk = clk_register_gate(NULL, "gmac_clk", "ahb_clk", 0, PERIP1_CLK_ENB,
+ GMAC_CLK_ENB, 0, &_lock);
+ clk_register_clkdev(clk, NULL, "gmac");
+
+ clk = clk_register_gate(NULL, "i2c_clk", "ahb_clk", 0, PERIP1_CLK_ENB,
+ I2C_CLK_ENB, 0, &_lock);
+ clk_register_clkdev(clk, NULL, "d0200000.i2c");
+
+ clk = clk_register_gate(NULL, "jpeg_clk", "ahb_clk", 0, PERIP1_CLK_ENB,
+ JPEG_CLK_ENB, 0, &_lock);
+ clk_register_clkdev(clk, NULL, "jpeg");
+
+ clk = clk_register_gate(NULL, "smi_clk", "ahb_clk", 0, PERIP1_CLK_ENB,
+ SMI_CLK_ENB, 0, &_lock);
+ clk_register_clkdev(clk, NULL, "fc000000.flash");
+
+ /* clock derived from apb clk */
+ clk = clk_register_gate(NULL, "adc_clk", "apb_clk", 0, PERIP1_CLK_ENB,
+ ADC_CLK_ENB, 0, &_lock);
+ clk_register_clkdev(clk, NULL, "adc");
+
+ clk = clk_register_fixed_factor(NULL, "gpio0_clk", "apb_clk", 0, 1, 1);
+ clk_register_clkdev(clk, NULL, "f0100000.gpio");
+
+ clk = clk_register_gate(NULL, "gpio1_clk", "apb_clk", 0, PERIP1_CLK_ENB,
+ GPIO1_CLK_ENB, 0, &_lock);
+ clk_register_clkdev(clk, NULL, "fc980000.gpio");
+
+ clk = clk_register_gate(NULL, "gpio2_clk", "apb_clk", 0, PERIP1_CLK_ENB,
+ GPIO2_CLK_ENB, 0, &_lock);
+ clk_register_clkdev(clk, NULL, "d8100000.gpio");
+
+ clk = clk_register_gate(NULL, "ssp0_clk", "apb_clk", 0, PERIP1_CLK_ENB,
+ SSP0_CLK_ENB, 0, &_lock);
+ clk_register_clkdev(clk, NULL, "ssp-pl022.0");
+
+ clk = clk_register_gate(NULL, "ssp1_clk", "apb_clk", 0, PERIP1_CLK_ENB,
+ SSP1_CLK_ENB, 0, &_lock);
+ clk_register_clkdev(clk, NULL, "ssp-pl022.1");
+
+ clk = clk_register_gate(NULL, "ssp2_clk", "apb_clk", 0, PERIP1_CLK_ENB,
+ SSP2_CLK_ENB, 0, &_lock);
+ clk_register_clkdev(clk, NULL, "ssp-pl022.2");
+}
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-12-24 19:38:24 +0000