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-rw-r--r--drivers/clk/Makefile3
-rw-r--r--drivers/clk/clk-u300.c746
2 files changed, 748 insertions, 1 deletions
diff --git a/drivers/clk/Makefile b/drivers/clk/Makefile
index b679f117f3c..35d9fb44c81 100644
--- a/drivers/clk/Makefile
+++ b/drivers/clk/Makefile
@@ -1,10 +1,11 @@
-
+# common clock types
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/
+obj-$(CONFIG_ARCH_U300) += clk-u300.o
# Chip specific
obj-$(CONFIG_COMMON_CLK_WM831X) += clk-wm831x.o
diff --git a/drivers/clk/clk-u300.c b/drivers/clk/clk-u300.c
new file mode 100644
index 00000000000..a15f7928fb1
--- /dev/null
+++ b/drivers/clk/clk-u300.c
@@ -0,0 +1,746 @@
+/*
+ * U300 clock implementation
+ * Copyright (C) 2007-2012 ST-Ericsson AB
+ * License terms: GNU General Public License (GPL) version 2
+ * Author: Linus Walleij <linus.walleij@stericsson.com>
+ * Author: Jonas Aaberg <jonas.aberg@stericsson.com>
+ */
+#include <linux/clk.h>
+#include <linux/clkdev.h>
+#include <linux/err.h>
+#include <linux/io.h>
+#include <linux/clk-provider.h>
+#include <linux/spinlock.h>
+#include <mach/syscon.h>
+
+/*
+ * The clocking hierarchy currently looks like this.
+ * NOTE: the idea is NOT to show how the clocks are routed on the chip!
+ * The ideas is to show dependencies, so a clock higher up in the
+ * hierarchy has to be on in order for another clock to be on. Now,
+ * both CPU and DMA can actually be on top of the hierarchy, and that
+ * is not modeled currently. Instead we have the backbone AMBA bus on
+ * top. This bus cannot be programmed in any way but conceptually it
+ * needs to be active for the bridges and devices to transport data.
+ *
+ * Please be aware that a few clocks are hw controlled, which mean that
+ * the hw itself can turn on/off or change the rate of the clock when
+ * needed!
+ *
+ * AMBA bus
+ * |
+ * +- CPU
+ * +- FSMC NANDIF NAND Flash interface
+ * +- SEMI Shared Memory interface
+ * +- ISP Image Signal Processor (U335 only)
+ * +- CDS (U335 only)
+ * +- DMA Direct Memory Access Controller
+ * +- AAIF APP/ACC Inteface (Mobile Scalable Link, MSL)
+ * +- APEX
+ * +- VIDEO_ENC AVE2/3 Video Encoder
+ * +- XGAM Graphics Accelerator Controller
+ * +- AHB
+ * |
+ * +- ahb:0 AHB Bridge
+ * | |
+ * | +- ahb:1 INTCON Interrupt controller
+ * | +- ahb:3 MSPRO Memory Stick Pro controller
+ * | +- ahb:4 EMIF External Memory interface
+ * |
+ * +- fast:0 FAST bridge
+ * | |
+ * | +- fast:1 MMCSD MMC/SD card reader controller
+ * | +- fast:2 I2S0 PCM I2S channel 0 controller
+ * | +- fast:3 I2S1 PCM I2S channel 1 controller
+ * | +- fast:4 I2C0 I2C channel 0 controller
+ * | +- fast:5 I2C1 I2C channel 1 controller
+ * | +- fast:6 SPI SPI controller
+ * | +- fast:7 UART1 Secondary UART (U335 only)
+ * |
+ * +- slow:0 SLOW bridge
+ * |
+ * +- slow:1 SYSCON (not possible to control)
+ * +- slow:2 WDOG Watchdog
+ * +- slow:3 UART0 primary UART
+ * +- slow:4 TIMER_APP Application timer - used in Linux
+ * +- slow:5 KEYPAD controller
+ * +- slow:6 GPIO controller
+ * +- slow:7 RTC controller
+ * +- slow:8 BT Bus Tracer (not used currently)
+ * +- slow:9 EH Event Handler (not used currently)
+ * +- slow:a TIMER_ACC Access style timer (not used currently)
+ * +- slow:b PPM (U335 only, what is that?)
+ */
+
+/* Global syscon virtual base */
+static void __iomem *syscon_vbase;
+
+/**
+ * struct clk_syscon - U300 syscon clock
+ * @hw: corresponding clock hardware entry
+ * @hw_ctrld: whether this clock is hardware controlled (for refcount etc)
+ * and does not need any magic pokes to be enabled/disabled
+ * @reset: state holder, whether this block's reset line is asserted or not
+ * @res_reg: reset line enable/disable flag register
+ * @res_bit: bit for resetting or taking this consumer out of reset
+ * @en_reg: clock line enable/disable flag register
+ * @en_bit: bit for enabling/disabling this consumer clock line
+ * @clk_val: magic value to poke in the register to enable/disable
+ * this one clock
+ */
+struct clk_syscon {
+ struct clk_hw hw;
+ bool hw_ctrld;
+ bool reset;
+ void __iomem *res_reg;
+ u8 res_bit;
+ void __iomem *en_reg;
+ u8 en_bit;
+ u16 clk_val;
+};
+
+#define to_syscon(_hw) container_of(_hw, struct clk_syscon, hw)
+
+static DEFINE_SPINLOCK(syscon_resetreg_lock);
+
+/*
+ * Reset control functions. We remember if a block has been
+ * taken out of reset and don't remove the reset assertion again
+ * and vice versa. Currently we only remove resets so the
+ * enablement function is defined out.
+ */
+static void syscon_block_reset_enable(struct clk_syscon *sclk)
+{
+ unsigned long iflags;
+ u16 val;
+
+ /* Not all blocks support resetting */
+ if (!sclk->res_reg)
+ return;
+ spin_lock_irqsave(&syscon_resetreg_lock, iflags);
+ val = readw(sclk->res_reg);
+ val |= BIT(sclk->res_bit);
+ writew(val, sclk->res_reg);
+ spin_unlock_irqrestore(&syscon_resetreg_lock, iflags);
+ sclk->reset = true;
+}
+
+static void syscon_block_reset_disable(struct clk_syscon *sclk)
+{
+ unsigned long iflags;
+ u16 val;
+
+ /* Not all blocks support resetting */
+ if (!sclk->res_reg)
+ return;
+ spin_lock_irqsave(&syscon_resetreg_lock, iflags);
+ val = readw(sclk->res_reg);
+ val &= ~BIT(sclk->res_bit);
+ writew(val, sclk->res_reg);
+ spin_unlock_irqrestore(&syscon_resetreg_lock, iflags);
+ sclk->reset = false;
+}
+
+static int syscon_clk_prepare(struct clk_hw *hw)
+{
+ struct clk_syscon *sclk = to_syscon(hw);
+
+ /* If the block is in reset, bring it out */
+ if (sclk->reset)
+ syscon_block_reset_disable(sclk);
+ return 0;
+}
+
+static void syscon_clk_unprepare(struct clk_hw *hw)
+{
+ struct clk_syscon *sclk = to_syscon(hw);
+
+ /* Please don't force the console into reset */
+ if (sclk->clk_val == U300_SYSCON_SBCER_UART_CLK_EN)
+ return;
+ /* When unpreparing, force block into reset */
+ if (!sclk->reset)
+ syscon_block_reset_enable(sclk);
+}
+
+static int syscon_clk_enable(struct clk_hw *hw)
+{
+ struct clk_syscon *sclk = to_syscon(hw);
+
+ /* Don't touch the hardware controlled clocks */
+ if (sclk->hw_ctrld)
+ return 0;
+ /* These cannot be controlled */
+ if (sclk->clk_val == 0xFFFFU)
+ return 0;
+
+ writew(sclk->clk_val, syscon_vbase + U300_SYSCON_SBCER);
+ return 0;
+}
+
+static void syscon_clk_disable(struct clk_hw *hw)
+{
+ struct clk_syscon *sclk = to_syscon(hw);
+
+ /* Don't touch the hardware controlled clocks */
+ if (sclk->hw_ctrld)
+ return;
+ if (sclk->clk_val == 0xFFFFU)
+ return;
+ /* Please don't disable the console port */
+ if (sclk->clk_val == U300_SYSCON_SBCER_UART_CLK_EN)
+ return;
+
+ writew(sclk->clk_val, syscon_vbase + U300_SYSCON_SBCDR);
+}
+
+static int syscon_clk_is_enabled(struct clk_hw *hw)
+{
+ struct clk_syscon *sclk = to_syscon(hw);
+ u16 val;
+
+ /* If no enable register defined, it's always-on */
+ if (!sclk->en_reg)
+ return 1;
+
+ val = readw(sclk->en_reg);
+ val &= BIT(sclk->en_bit);
+
+ return val ? 1 : 0;
+}
+
+static u16 syscon_get_perf(void)
+{
+ u16 val;
+
+ val = readw(syscon_vbase + U300_SYSCON_CCR);
+ val &= U300_SYSCON_CCR_CLKING_PERFORMANCE_MASK;
+ return val;
+}
+
+static unsigned long
+syscon_clk_recalc_rate(struct clk_hw *hw,
+ unsigned long parent_rate)
+{
+ struct clk_syscon *sclk = to_syscon(hw);
+ u16 perf = syscon_get_perf();
+
+ switch(sclk->clk_val) {
+ case U300_SYSCON_SBCER_FAST_BRIDGE_CLK_EN:
+ case U300_SYSCON_SBCER_I2C0_CLK_EN:
+ case U300_SYSCON_SBCER_I2C1_CLK_EN:
+ case U300_SYSCON_SBCER_MMC_CLK_EN:
+ case U300_SYSCON_SBCER_SPI_CLK_EN:
+ /* The FAST clocks have one progression */
+ switch(perf) {
+ case U300_SYSCON_CCR_CLKING_PERFORMANCE_LOW_POWER:
+ case U300_SYSCON_CCR_CLKING_PERFORMANCE_LOW:
+ return 13000000;
+ default:
+ return parent_rate; /* 26 MHz */
+ }
+ case U300_SYSCON_SBCER_DMAC_CLK_EN:
+ case U300_SYSCON_SBCER_NANDIF_CLK_EN:
+ case U300_SYSCON_SBCER_XGAM_CLK_EN:
+ /* AMBA interconnect peripherals */
+ switch(perf) {
+ case U300_SYSCON_CCR_CLKING_PERFORMANCE_LOW_POWER:
+ case U300_SYSCON_CCR_CLKING_PERFORMANCE_LOW:
+ return 6500000;
+ case U300_SYSCON_CCR_CLKING_PERFORMANCE_INTERMEDIATE:
+ return 26000000;
+ default:
+ return parent_rate; /* 52 MHz */
+ }
+ case U300_SYSCON_SBCER_SEMI_CLK_EN:
+ case U300_SYSCON_SBCER_EMIF_CLK_EN:
+ /* EMIF speeds */
+ switch(perf) {
+ case U300_SYSCON_CCR_CLKING_PERFORMANCE_LOW_POWER:
+ case U300_SYSCON_CCR_CLKING_PERFORMANCE_LOW:
+ return 13000000;
+ case U300_SYSCON_CCR_CLKING_PERFORMANCE_INTERMEDIATE:
+ return 52000000;
+ default:
+ return 104000000;
+ }
+ case U300_SYSCON_SBCER_CPU_CLK_EN:
+ /* And the fast CPU clock */
+ switch(perf) {
+ case U300_SYSCON_CCR_CLKING_PERFORMANCE_LOW_POWER:
+ case U300_SYSCON_CCR_CLKING_PERFORMANCE_LOW:
+ return 13000000;
+ case U300_SYSCON_CCR_CLKING_PERFORMANCE_INTERMEDIATE:
+ return 52000000;
+ case U300_SYSCON_CCR_CLKING_PERFORMANCE_HIGH:
+ return 104000000;
+ default:
+ return parent_rate; /* 208 MHz */
+ }
+ default:
+ /*
+ * The SLOW clocks and default just inherit the rate of
+ * their parent (typically PLL13 13 MHz).
+ */
+ return parent_rate;
+ }
+}
+
+static long
+syscon_clk_round_rate(struct clk_hw *hw, unsigned long rate,
+ unsigned long *prate)
+{
+ struct clk_syscon *sclk = to_syscon(hw);
+
+ if (sclk->clk_val != U300_SYSCON_SBCER_CPU_CLK_EN)
+ return *prate;
+ /* We really only support setting the rate of the CPU clock */
+ if (rate <= 13000000)
+ return 13000000;
+ if (rate <= 52000000)
+ return 52000000;
+ if (rate <= 104000000)
+ return 104000000;
+ return 208000000;
+}
+
+static int syscon_clk_set_rate(struct clk_hw *hw, unsigned long rate,
+ unsigned long parent_rate)
+{
+ struct clk_syscon *sclk = to_syscon(hw);
+ u16 val;
+
+ /* We only support setting the rate of the CPU clock */
+ if (sclk->clk_val != U300_SYSCON_SBCER_CPU_CLK_EN)
+ return -EINVAL;
+ switch (rate) {
+ case 13000000:
+ val = U300_SYSCON_CCR_CLKING_PERFORMANCE_LOW_POWER;
+ break;
+ case 52000000:
+ val = U300_SYSCON_CCR_CLKING_PERFORMANCE_INTERMEDIATE;
+ break;
+ case 104000000:
+ val = U300_SYSCON_CCR_CLKING_PERFORMANCE_HIGH;
+ break;
+ case 208000000:
+ val = U300_SYSCON_CCR_CLKING_PERFORMANCE_BEST;
+ break;
+ default:
+ return -EINVAL;
+ }
+ val |= readw(syscon_vbase + U300_SYSCON_CCR) &
+ ~U300_SYSCON_CCR_CLKING_PERFORMANCE_MASK ;
+ writew(val, syscon_vbase + U300_SYSCON_CCR);
+ return 0;
+}
+
+static const struct clk_ops syscon_clk_ops = {
+ .prepare = syscon_clk_prepare,
+ .unprepare = syscon_clk_unprepare,
+ .enable = syscon_clk_enable,
+ .disable = syscon_clk_disable,
+ .is_enabled = syscon_clk_is_enabled,
+ .recalc_rate = syscon_clk_recalc_rate,
+ .round_rate = syscon_clk_round_rate,
+ .set_rate = syscon_clk_set_rate,
+};
+
+static struct clk * __init
+syscon_clk_register(struct device *dev, const char *name,
+ const char *parent_name, unsigned long flags,
+ bool hw_ctrld,
+ void __iomem *res_reg, u8 res_bit,
+ void __iomem *en_reg, u8 en_bit,
+ u16 clk_val)
+{
+ struct clk *clk;
+ struct clk_syscon *sclk;
+ struct clk_init_data init;
+
+ sclk = kzalloc(sizeof(struct clk_syscon), GFP_KERNEL);
+ if (!sclk) {
+ pr_err("could not allocate syscon clock %s\n",
+ name);
+ return ERR_PTR(-ENOMEM);
+ }
+ init.name = name;
+ init.ops = &syscon_clk_ops;
+ init.flags = flags;
+ init.parent_names = (parent_name ? &parent_name : NULL);
+ init.num_parents = (parent_name ? 1 : 0);
+ sclk->hw.init = &init;
+ sclk->hw_ctrld = hw_ctrld;
+ /* Assume the block is in reset at registration */
+ sclk->reset = true;
+ sclk->res_reg = res_reg;
+ sclk->res_bit = res_bit;
+ sclk->en_reg = en_reg;
+ sclk->en_bit = en_bit;
+ sclk->clk_val = clk_val;
+
+ clk = clk_register(dev, &sclk->hw);
+ if (IS_ERR(clk))
+ kfree(sclk);
+
+ return clk;
+}
+
+/**
+ * struct clk_mclk - U300 MCLK clock (MMC/SD clock)
+ * @hw: corresponding clock hardware entry
+ * @is_mspro: if this is the memory stick clock rather than MMC/SD
+ */
+struct clk_mclk {
+ struct clk_hw hw;
+ bool is_mspro;
+};
+
+#define to_mclk(_hw) container_of(_hw, struct clk_mclk, hw)
+
+static int mclk_clk_prepare(struct clk_hw *hw)
+{
+ struct clk_mclk *mclk = to_mclk(hw);
+ u16 val;
+
+ /* The MMC and MSPRO clocks need some special set-up */
+ if (!mclk->is_mspro) {
+ /* Set default MMC clock divisor to 18.9 MHz */
+ writew(0x0054U, syscon_vbase + U300_SYSCON_MMF0R);
+ val = readw(syscon_vbase + U300_SYSCON_MMCR);
+ /* Disable the MMC feedback clock */
+ val &= ~U300_SYSCON_MMCR_MMC_FB_CLK_SEL_ENABLE;
+ /* Disable MSPRO frequency */
+ val &= ~U300_SYSCON_MMCR_MSPRO_FREQSEL_ENABLE;
+ writew(val, syscon_vbase + U300_SYSCON_MMCR);
+ } else {
+ val = readw(syscon_vbase + U300_SYSCON_MMCR);
+ /* Disable the MMC feedback clock */
+ val &= ~U300_SYSCON_MMCR_MMC_FB_CLK_SEL_ENABLE;
+ /* Enable MSPRO frequency */
+ val |= U300_SYSCON_MMCR_MSPRO_FREQSEL_ENABLE;
+ writew(val, syscon_vbase + U300_SYSCON_MMCR);
+ }
+
+ return 0;
+}
+
+static unsigned long
+mclk_clk_recalc_rate(struct clk_hw *hw,
+ unsigned long parent_rate)
+{
+ u16 perf = syscon_get_perf();
+
+ switch (perf) {
+ case U300_SYSCON_CCR_CLKING_PERFORMANCE_LOW_POWER:
+ /*
+ * Here, the 208 MHz PLL gets shut down and the always
+ * on 13 MHz PLL used for RTC etc kicks into use
+ * instead.
+ */
+ return 13000000;
+ case U300_SYSCON_CCR_CLKING_PERFORMANCE_LOW:
+ case U300_SYSCON_CCR_CLKING_PERFORMANCE_INTERMEDIATE:
+ case U300_SYSCON_CCR_CLKING_PERFORMANCE_HIGH:
+ case U300_SYSCON_CCR_CLKING_PERFORMANCE_BEST:
+ {
+ /*
+ * This clock is under program control. The register is
+ * divided in two nybbles, bit 7-4 gives cycles-1 to count
+ * high, bit 3-0 gives cycles-1 to count low. Distribute
+ * these with no more than 1 cycle difference between
+ * low and high and add low and high to get the actual
+ * divisor. The base PLL is 208 MHz. Writing 0x00 will
+ * divide by 1 and 1 so the highest frequency possible
+ * is 104 MHz.
+ *
+ * e.g. 0x54 =>
+ * f = 208 / ((5+1) + (4+1)) = 208 / 11 = 18.9 MHz
+ */
+ u16 val = readw(syscon_vbase + U300_SYSCON_MMF0R) &
+ U300_SYSCON_MMF0R_MASK;
+ switch (val) {
+ case 0x0054:
+ return 18900000;
+ case 0x0044:
+ return 20800000;
+ case 0x0043:
+ return 23100000;
+ case 0x0033:
+ return 26000000;
+ case 0x0032:
+ return 29700000;
+ case 0x0022:
+ return 34700000;
+ case 0x0021:
+ return 41600000;
+ case 0x0011:
+ return 52000000;
+ case 0x0000:
+ return 104000000;
+ default:
+ break;
+ }
+ }
+ default:
+ break;
+ }
+ return parent_rate;
+}
+
+static long
+mclk_clk_round_rate(struct clk_hw *hw, unsigned long rate,
+ unsigned long *prate)
+{
+ if (rate <= 18900000)
+ return 18900000;
+ if (rate <= 20800000)
+ return 20800000;
+ if (rate <= 23100000)
+ return 23100000;
+ if (rate <= 26000000)
+ return 26000000;
+ if (rate <= 29700000)
+ return 29700000;
+ if (rate <= 34700000)
+ return 34700000;
+ if (rate <= 41600000)
+ return 41600000;
+ /* Highest rate */
+ return 52000000;
+}
+
+static int mclk_clk_set_rate(struct clk_hw *hw, unsigned long rate,
+ unsigned long parent_rate)
+{
+ u16 val;
+ u16 reg;
+
+ switch (rate) {
+ case 18900000:
+ val = 0x0054;
+ break;
+ case 20800000:
+ val = 0x0044;
+ break;
+ case 23100000:
+ val = 0x0043;
+ break;
+ case 26000000:
+ val = 0x0033;
+ break;
+ case 29700000:
+ val = 0x0032;
+ break;
+ case 34700000:
+ val = 0x0022;
+ break;
+ case 41600000:
+ val = 0x0021;
+ break;
+ case 52000000:
+ val = 0x0011;
+ break;
+ case 104000000:
+ val = 0x0000;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ reg = readw(syscon_vbase + U300_SYSCON_MMF0R) &
+ ~U300_SYSCON_MMF0R_MASK;
+ writew(reg | val, syscon_vbase + U300_SYSCON_MMF0R);
+ return 0;
+}
+
+static const struct clk_ops mclk_ops = {
+ .prepare = mclk_clk_prepare,
+ .recalc_rate = mclk_clk_recalc_rate,
+ .round_rate = mclk_clk_round_rate,
+ .set_rate = mclk_clk_set_rate,
+};
+
+static struct clk * __init
+mclk_clk_register(struct device *dev, const char *name,
+ const char *parent_name, bool is_mspro)
+{
+ struct clk *clk;
+ struct clk_mclk *mclk;
+ struct clk_init_data init;
+
+ mclk = kzalloc(sizeof(struct clk_mclk), GFP_KERNEL);
+ if (!mclk) {
+ pr_err("could not allocate MMC/SD clock %s\n",
+ name);
+ return ERR_PTR(-ENOMEM);
+ }
+ init.name = "mclk";
+ init.ops = &mclk_ops;
+ init.flags = 0;
+ init.parent_names = (parent_name ? &parent_name : NULL);
+ init.num_parents = (parent_name ? 1 : 0);
+ mclk->hw.init = &init;
+ mclk->is_mspro = is_mspro;
+
+ clk = clk_register(dev, &mclk->hw);
+ if (IS_ERR(clk))
+ kfree(mclk);
+
+ return clk;
+}
+
+void __init u300_clk_init(void __iomem *base)
+{
+ u16 val;
+ struct clk *clk;
+
+ syscon_vbase = base;
+
+ /* Set system to run at PLL208, max performance, a known state. */
+ val = readw(syscon_vbase + U300_SYSCON_CCR);
+ val &= ~U300_SYSCON_CCR_CLKING_PERFORMANCE_MASK;
+ writew(val, syscon_vbase + U300_SYSCON_CCR);
+ /* Wait for the PLL208 to lock if not locked in yet */
+ while (!(readw(syscon_vbase + U300_SYSCON_CSR) &
+ U300_SYSCON_CSR_PLL208_LOCK_IND));
+
+ /* Power management enable */
+ val = readw(syscon_vbase + U300_SYSCON_PMCR);
+ val |= U300_SYSCON_PMCR_PWR_MGNT_ENABLE;
+ writew(val, syscon_vbase + U300_SYSCON_PMCR);
+
+ /* These are always available (RTC and PLL13) */
+ clk = clk_register_fixed_rate(NULL, "app_32_clk", NULL,
+ CLK_IS_ROOT, 32768);
+ /* The watchdog sits directly on the 32 kHz clock */
+ clk_register_clkdev(clk, NULL, "coh901327_wdog");
+ clk = clk_register_fixed_rate(NULL, "pll13", NULL,
+ CLK_IS_ROOT, 13000000);
+
+ /* These derive from PLL208 */
+ clk = clk_register_fixed_rate(NULL, "pll208", NULL,
+ CLK_IS_ROOT, 208000000);
+ clk = clk_register_fixed_factor(NULL, "app_208_clk", "pll208",
+ 0, 1, 1);
+ clk = clk_register_fixed_factor(NULL, "app_104_clk", "pll208",
+ 0, 1, 2);
+ clk = clk_register_fixed_factor(NULL, "app_52_clk", "pll208",
+ 0, 1, 4);
+ /* The 52 MHz is divided down to 26 MHz */
+ clk = clk_register_fixed_factor(NULL, "app_26_clk", "app_52_clk",
+ 0, 1, 2);
+
+ /* Directly on the AMBA interconnect */
+ clk = syscon_clk_register(NULL, "cpu_clk", "app_208_clk", 0, true,
+ syscon_vbase + U300_SYSCON_RRR, 3,
+ syscon_vbase + U300_SYSCON_CERR, 3,
+ U300_SYSCON_SBCER_CPU_CLK_EN);
+ clk = syscon_clk_register(NULL, "dmac_clk", "app_52_clk", 0, true,
+ syscon_vbase + U300_SYSCON_RRR, 4,
+ syscon_vbase + U300_SYSCON_CERR, 4,
+ U300_SYSCON_SBCER_DMAC_CLK_EN);
+ clk_register_clkdev(clk, NULL, "dma");
+ clk = syscon_clk_register(NULL, "fsmc_clk", "app_52_clk", 0, false,
+ syscon_vbase + U300_SYSCON_RRR, 6,
+ syscon_vbase + U300_SYSCON_CERR, 6,
+ U300_SYSCON_SBCER_NANDIF_CLK_EN);
+ clk_register_clkdev(clk, NULL, "fsmc-nand");
+ clk = syscon_clk_register(NULL, "xgam_clk", "app_52_clk", 0, true,
+ syscon_vbase + U300_SYSCON_RRR, 8,
+ syscon_vbase + U300_SYSCON_CERR, 8,
+ U300_SYSCON_SBCER_XGAM_CLK_EN);
+ clk_register_clkdev(clk, NULL, "xgam");
+ clk = syscon_clk_register(NULL, "semi_clk", "app_104_clk", 0, false,
+ syscon_vbase + U300_SYSCON_RRR, 9,
+ syscon_vbase + U300_SYSCON_CERR, 9,
+ U300_SYSCON_SBCER_SEMI_CLK_EN);
+ clk_register_clkdev(clk, NULL, "semi");
+
+ /* AHB bridge clocks */
+ clk = syscon_clk_register(NULL, "ahb_subsys_clk", "app_52_clk", 0, true,
+ syscon_vbase + U300_SYSCON_RRR, 10,
+ syscon_vbase + U300_SYSCON_CERR, 10,
+ U300_SYSCON_SBCER_AHB_SUBSYS_BRIDGE_CLK_EN);
+ clk = syscon_clk_register(NULL, "intcon_clk", "ahb_subsys_clk", 0, false,
+ syscon_vbase + U300_SYSCON_RRR, 12,
+ syscon_vbase + U300_SYSCON_CERR, 12,
+ /* Cannot be enabled, just taken out of reset */
+ 0xFFFFU);
+ clk_register_clkdev(clk, NULL, "intcon");
+ clk = syscon_clk_register(NULL, "emif_clk", "ahb_subsys_clk", 0, false,
+ syscon_vbase + U300_SYSCON_RRR, 5,
+ syscon_vbase + U300_SYSCON_CERR, 5,
+ U300_SYSCON_SBCER_EMIF_CLK_EN);
+ clk_register_clkdev(clk, NULL, "pl172");
+
+ /* FAST bridge clocks */
+ clk = syscon_clk_register(NULL, "fast_clk", "app_26_clk", 0, true,
+ syscon_vbase + U300_SYSCON_RFR, 0,
+ syscon_vbase + U300_SYSCON_CEFR, 0,
+ U300_SYSCON_SBCER_FAST_BRIDGE_CLK_EN);
+ clk = syscon_clk_register(NULL, "i2c0_p_clk", "fast_clk", 0, false,
+ syscon_vbase + U300_SYSCON_RFR, 1,
+ syscon_vbase + U300_SYSCON_CEFR, 1,
+ U300_SYSCON_SBCER_I2C0_CLK_EN);
+ clk_register_clkdev(clk, NULL, "stu300.0");
+ clk = syscon_clk_register(NULL, "i2c1_p_clk", "fast_clk", 0, false,
+ syscon_vbase + U300_SYSCON_RFR, 2,
+ syscon_vbase + U300_SYSCON_CEFR, 2,
+ U300_SYSCON_SBCER_I2C1_CLK_EN);
+ clk_register_clkdev(clk, NULL, "stu300.1");
+ clk = syscon_clk_register(NULL, "mmc_p_clk", "fast_clk", 0, false,
+ syscon_vbase + U300_SYSCON_RFR, 5,
+ syscon_vbase + U300_SYSCON_CEFR, 5,
+ U300_SYSCON_SBCER_MMC_CLK_EN);
+ clk_register_clkdev(clk, "apb_pclk", "mmci");
+ clk = syscon_clk_register(NULL, "spi_p_clk", "fast_clk", 0, false,
+ syscon_vbase + U300_SYSCON_RFR, 6,
+ syscon_vbase + U300_SYSCON_CEFR, 6,
+ U300_SYSCON_SBCER_SPI_CLK_EN);
+ /* The SPI has no external clock for the outward bus, uses the pclk */
+ clk_register_clkdev(clk, NULL, "pl022");
+ clk_register_clkdev(clk, "apb_pclk", "pl022");
+
+ /* SLOW bridge clocks */
+ clk = syscon_clk_register(NULL, "slow_clk", "pll13", 0, true,
+ syscon_vbase + U300_SYSCON_RSR, 0,
+ syscon_vbase + U300_SYSCON_CESR, 0,
+ U300_SYSCON_SBCER_SLOW_BRIDGE_CLK_EN);
+ clk = syscon_clk_register(NULL, "uart0_clk", "slow_clk", 0, false,
+ syscon_vbase + U300_SYSCON_RSR, 1,
+ syscon_vbase + U300_SYSCON_CESR, 1,
+ U300_SYSCON_SBCER_UART_CLK_EN);
+ /* Same clock is used for APB and outward bus */
+ clk_register_clkdev(clk, NULL, "uart0");
+ clk_register_clkdev(clk, "apb_pclk", "uart0");
+ clk = syscon_clk_register(NULL, "gpio_clk", "slow_clk", 0, false,
+ syscon_vbase + U300_SYSCON_RSR, 4,
+ syscon_vbase + U300_SYSCON_CESR, 4,
+ U300_SYSCON_SBCER_GPIO_CLK_EN);
+ clk_register_clkdev(clk, NULL, "u300-gpio");
+ clk = syscon_clk_register(NULL, "keypad_clk", "slow_clk", 0, false,
+ syscon_vbase + U300_SYSCON_RSR, 5,
+ syscon_vbase + U300_SYSCON_CESR, 6,
+ U300_SYSCON_SBCER_KEYPAD_CLK_EN);
+ clk_register_clkdev(clk, NULL, "coh901461-keypad");
+ clk = syscon_clk_register(NULL, "rtc_clk", "slow_clk", 0, true,
+ syscon_vbase + U300_SYSCON_RSR, 6,
+ /* No clock enable register bit */
+ NULL, 0, 0xFFFFU);
+ clk_register_clkdev(clk, NULL, "rtc-coh901331");
+ clk = syscon_clk_register(NULL, "app_tmr_clk", "slow_clk", 0, false,
+ syscon_vbase + U300_SYSCON_RSR, 7,
+ syscon_vbase + U300_SYSCON_CESR, 7,
+ U300_SYSCON_SBCER_APP_TMR_CLK_EN);
+ clk_register_clkdev(clk, NULL, "apptimer");
+ clk = syscon_clk_register(NULL, "acc_tmr_clk", "slow_clk", 0, false,
+ syscon_vbase + U300_SYSCON_RSR, 8,
+ syscon_vbase + U300_SYSCON_CESR, 8,
+ U300_SYSCON_SBCER_ACC_TMR_CLK_EN);
+ clk_register_clkdev(clk, NULL, "timer");
+
+ /* Then this special MMC/SD clock */
+ clk = mclk_clk_register(NULL, "mmc_clk", "mmc_p_clk", false);
+ clk_register_clkdev(clk, NULL, "mmci");
+}
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-12-16 03:04:41 +0000