diff options
Diffstat (limited to 'arch/arm/mach-imx/clock-mx51-mx53.c')
| -rw-r--r-- | arch/arm/mach-imx/clock-mx51-mx53.c | 1675 |
1 files changed, 1675 insertions, 0 deletions
diff --git a/arch/arm/mach-imx/clock-mx51-mx53.c b/arch/arm/mach-imx/clock-mx51-mx53.c new file mode 100644 index 00000000000..08470504a08 --- /dev/null +++ b/arch/arm/mach-imx/clock-mx51-mx53.c @@ -0,0 +1,1675 @@ +/* + * Copyright 2008-2010 Freescale Semiconductor, Inc. All Rights Reserved. + * Copyright (C) 2009-2010 Amit Kucheria <amit.kucheria@canonical.com> + * + * The code contained herein is licensed under the GNU General Public + * License. You may obtain a copy of the GNU General Public License + * Version 2 or later at the following locations: + * + * http://www.opensource.org/licenses/gpl-license.html + * http://www.gnu.org/copyleft/gpl.html + */ + +#include <linux/mm.h> +#include <linux/delay.h> +#include <linux/clk.h> +#include <linux/io.h> +#include <linux/clkdev.h> +#include <linux/of.h> + +#include <asm/div64.h> + +#include <mach/hardware.h> +#include <mach/common.h> +#include <mach/clock.h> + +#include "crm-regs-imx5.h" + +/* External clock values passed-in by the board code */ +static unsigned long external_high_reference, external_low_reference; +static unsigned long oscillator_reference, ckih2_reference; + +static struct clk osc_clk; +static struct clk pll1_main_clk; +static struct clk pll1_sw_clk; +static struct clk pll2_sw_clk; +static struct clk pll3_sw_clk; +static struct clk mx53_pll4_sw_clk; +static struct clk lp_apm_clk; +static struct clk periph_apm_clk; +static struct clk ahb_clk; +static struct clk ipg_clk; +static struct clk usboh3_clk; +static struct clk emi_fast_clk; +static struct clk ipu_clk; +static struct clk mipi_hsc1_clk; +static struct clk esdhc1_clk; +static struct clk esdhc2_clk; +static struct clk esdhc3_mx53_clk; + +#define MAX_DPLL_WAIT_TRIES 1000 /* 1000 * udelay(1) = 1ms */ + +/* calculate best pre and post dividers to get the required divider */ +static void __calc_pre_post_dividers(u32 div, u32 *pre, u32 *post, + u32 max_pre, u32 max_post) +{ + if (div >= max_pre * max_post) { + *pre = max_pre; + *post = max_post; + } else if (div >= max_pre) { + u32 min_pre, temp_pre, old_err, err; + min_pre = DIV_ROUND_UP(div, max_post); + old_err = max_pre; + for (temp_pre = max_pre; temp_pre >= min_pre; temp_pre--) { + err = div % temp_pre; + if (err == 0) { + *pre = temp_pre; + break; + } + err = temp_pre - err; + if (err < old_err) { + old_err = err; + *pre = temp_pre; + } + } + *post = DIV_ROUND_UP(div, *pre); + } else { + *pre = div; + *post = 1; + } +} + +static void _clk_ccgr_setclk(struct clk *clk, unsigned mode) +{ + u32 reg = __raw_readl(clk->enable_reg); + + reg &= ~(MXC_CCM_CCGRx_CG_MASK << clk->enable_shift); + reg |= mode << clk->enable_shift; + + __raw_writel(reg, clk->enable_reg); +} + +static int _clk_ccgr_enable(struct clk *clk) +{ + _clk_ccgr_setclk(clk, MXC_CCM_CCGRx_MOD_ON); + return 0; +} + +static void _clk_ccgr_disable(struct clk *clk) +{ + _clk_ccgr_setclk(clk, MXC_CCM_CCGRx_MOD_OFF); +} + +static int _clk_ccgr_enable_inrun(struct clk *clk) +{ + _clk_ccgr_setclk(clk, MXC_CCM_CCGRx_MOD_IDLE); + return 0; +} + +static void _clk_ccgr_disable_inwait(struct clk *clk) +{ + _clk_ccgr_setclk(clk, MXC_CCM_CCGRx_MOD_IDLE); +} + +/* + * For the 4-to-1 muxed input clock + */ +static inline u32 _get_mux(struct clk *parent, struct clk *m0, + struct clk *m1, struct clk *m2, struct clk *m3) +{ + if (parent == m0) + return 0; + else if (parent == m1) + return 1; + else if (parent == m2) + return 2; + else if (parent == m3) + return 3; + else + BUG(); + + return -EINVAL; +} + +static inline void __iomem *_mx51_get_pll_base(struct clk *pll) +{ + if (pll == &pll1_main_clk) + return MX51_DPLL1_BASE; + else if (pll == &pll2_sw_clk) + return MX51_DPLL2_BASE; + else if (pll == &pll3_sw_clk) + return MX51_DPLL3_BASE; + else + BUG(); + + return NULL; +} + +static inline void __iomem *_mx53_get_pll_base(struct clk *pll) +{ + if (pll == &pll1_main_clk) + return MX53_DPLL1_BASE; + else if (pll == &pll2_sw_clk) + return MX53_DPLL2_BASE; + else if (pll == &pll3_sw_clk) + return MX53_DPLL3_BASE; + else if (pll == &mx53_pll4_sw_clk) + return MX53_DPLL4_BASE; + else + BUG(); + + return NULL; +} + +static inline void __iomem *_get_pll_base(struct clk *pll) +{ + if (cpu_is_mx51()) + return _mx51_get_pll_base(pll); + else + return _mx53_get_pll_base(pll); +} + +static unsigned long clk_pll_get_rate(struct clk *clk) +{ + long mfi, mfn, mfd, pdf, ref_clk, mfn_abs; + unsigned long dp_op, dp_mfd, dp_mfn, dp_ctl, pll_hfsm, dbl; + void __iomem *pllbase; + s64 temp; + unsigned long parent_rate; + + parent_rate = clk_get_rate(clk->parent); + + pllbase = _get_pll_base(clk); + + dp_ctl = __raw_readl(pllbase + MXC_PLL_DP_CTL); + pll_hfsm = dp_ctl & MXC_PLL_DP_CTL_HFSM; + dbl = dp_ctl & MXC_PLL_DP_CTL_DPDCK0_2_EN; + + if (pll_hfsm == 0) { + dp_op = __raw_readl(pllbase + MXC_PLL_DP_OP); + dp_mfd = __raw_readl(pllbase + MXC_PLL_DP_MFD); + dp_mfn = __raw_readl(pllbase + MXC_PLL_DP_MFN); + } else { + dp_op = __raw_readl(pllbase + MXC_PLL_DP_HFS_OP); + dp_mfd = __raw_readl(pllbase + MXC_PLL_DP_HFS_MFD); + dp_mfn = __raw_readl(pllbase + MXC_PLL_DP_HFS_MFN); + } + pdf = dp_op & MXC_PLL_DP_OP_PDF_MASK; + mfi = (dp_op & MXC_PLL_DP_OP_MFI_MASK) >> MXC_PLL_DP_OP_MFI_OFFSET; + mfi = (mfi <= 5) ? 5 : mfi; + mfd = dp_mfd & MXC_PLL_DP_MFD_MASK; + mfn = mfn_abs = dp_mfn & MXC_PLL_DP_MFN_MASK; + /* Sign extend to 32-bits */ + if (mfn >= 0x04000000) { + mfn |= 0xFC000000; + mfn_abs = -mfn; + } + + ref_clk = 2 * parent_rate; + if (dbl != 0) + ref_clk *= 2; + + ref_clk /= (pdf + 1); + temp = (u64) ref_clk * mfn_abs; + do_div(temp, mfd + 1); + if (mfn < 0) + temp = -temp; + temp = (ref_clk * mfi) + temp; + + return temp; +} + +static int _clk_pll_set_rate(struct clk *clk, unsigned long rate) +{ + u32 reg; + void __iomem *pllbase; + + long mfi, pdf, mfn, mfd = 999999; + s64 temp64; + unsigned long quad_parent_rate; + unsigned long pll_hfsm, dp_ctl; + unsigned long parent_rate; + + parent_rate = clk_get_rate(clk->parent); + + pllbase = _get_pll_base(clk); + + quad_parent_rate = 4 * parent_rate; + pdf = mfi = -1; + while (++pdf < 16 && mfi < 5) + mfi = rate * (pdf+1) / quad_parent_rate; + if (mfi > 15) + return -EINVAL; + pdf--; + + temp64 = rate * (pdf+1) - quad_parent_rate * mfi; + do_div(temp64, quad_parent_rate/1000000); + mfn = (long)temp64; + + dp_ctl = __raw_readl(pllbase + MXC_PLL_DP_CTL); + /* use dpdck0_2 */ + __raw_writel(dp_ctl | 0x1000L, pllbase + MXC_PLL_DP_CTL); + pll_hfsm = dp_ctl & MXC_PLL_DP_CTL_HFSM; + if (pll_hfsm == 0) { + reg = mfi << 4 | pdf; + __raw_writel(reg, pllbase + MXC_PLL_DP_OP); + __raw_writel(mfd, pllbase + MXC_PLL_DP_MFD); + __raw_writel(mfn, pllbase + MXC_PLL_DP_MFN); + } else { + reg = mfi << 4 | pdf; + __raw_writel(reg, pllbase + MXC_PLL_DP_HFS_OP); + __raw_writel(mfd, pllbase + MXC_PLL_DP_HFS_MFD); + __raw_writel(mfn, pllbase + MXC_PLL_DP_HFS_MFN); + } + + return 0; +} + +static int _clk_pll_enable(struct clk *clk) +{ + u32 reg; + void __iomem *pllbase; + int i = 0; + + pllbase = _get_pll_base(clk); + reg = __raw_readl(pllbase + MXC_PLL_DP_CTL); + if (reg & MXC_PLL_DP_CTL_UPEN) + return 0; + + reg |= MXC_PLL_DP_CTL_UPEN; + __raw_writel(reg, pllbase + MXC_PLL_DP_CTL); + + /* Wait for lock */ + do { + reg = __raw_readl(pllbase + MXC_PLL_DP_CTL); + if (reg & MXC_PLL_DP_CTL_LRF) + break; + + udelay(1); + } while (++i < MAX_DPLL_WAIT_TRIES); + + if (i == MAX_DPLL_WAIT_TRIES) { + pr_err("MX5: pll locking failed\n"); + return -EINVAL; + } + + return 0; +} + +static void _clk_pll_disable(struct clk *clk) +{ + u32 reg; + void __iomem *pllbase; + + pllbase = _get_pll_base(clk); + reg = __raw_readl(pllbase + MXC_PLL_DP_CTL) & ~MXC_PLL_DP_CTL_UPEN; + __raw_writel(reg, pllbase + MXC_PLL_DP_CTL); +} + +static int _clk_pll1_sw_set_parent(struct clk *clk, struct clk *parent) +{ + u32 reg, step; + + reg = __raw_readl(MXC_CCM_CCSR); + + /* When switching from pll_main_clk to a bypass clock, first select a + * multiplexed clock in 'step_sel', then shift the glitchless mux + * 'pll1_sw_clk_sel'. + * + * When switching back, do it in reverse order + */ + if (parent == &pll1_main_clk) { + /* Switch to pll1_main_clk */ + reg &= ~MXC_CCM_CCSR_PLL1_SW_CLK_SEL; + __raw_writel(reg, MXC_CCM_CCSR); + /* step_clk mux switched to lp_apm, to save power. */ + reg = __raw_readl(MXC_CCM_CCSR); + reg &= ~MXC_CCM_CCSR_STEP_SEL_MASK; + reg |= (MXC_CCM_CCSR_STEP_SEL_LP_APM << + MXC_CCM_CCSR_STEP_SEL_OFFSET); + } else { + if (parent == &lp_apm_clk) { + step = MXC_CCM_CCSR_STEP_SEL_LP_APM; + } else if (parent == &pll2_sw_clk) { + step = MXC_CCM_CCSR_STEP_SEL_PLL2_DIVIDED; + } else if (parent == &pll3_sw_clk) { + step = MXC_CCM_CCSR_STEP_SEL_PLL3_DIVIDED; + } else + return -EINVAL; + + reg &= ~MXC_CCM_CCSR_STEP_SEL_MASK; + reg |= (step << MXC_CCM_CCSR_STEP_SEL_OFFSET); + + __raw_writel(reg, MXC_CCM_CCSR); + /* Switch to step_clk */ + reg = __raw_readl(MXC_CCM_CCSR); + reg |= MXC_CCM_CCSR_PLL1_SW_CLK_SEL; + } + __raw_writel(reg, MXC_CCM_CCSR); + return 0; +} + +static unsigned long clk_pll1_sw_get_rate(struct clk *clk) +{ + u32 reg, div; + unsigned long parent_rate; + + parent_rate = clk_get_rate(clk->parent); + + reg = __raw_readl(MXC_CCM_CCSR); + + if (clk->parent == &pll2_sw_clk) { + div = ((reg & MXC_CCM_CCSR_PLL2_PODF_MASK) >> + MXC_CCM_CCSR_PLL2_PODF_OFFSET) + 1; + } else if (clk->parent == &pll3_sw_clk) { + div = ((reg & MXC_CCM_CCSR_PLL3_PODF_MASK) >> + MXC_CCM_CCSR_PLL3_PODF_OFFSET) + 1; + } else + div = 1; + return parent_rate / div; +} + +static int _clk_pll2_sw_set_parent(struct clk *clk, struct clk *parent) +{ + u32 reg; + + reg = __raw_readl(MXC_CCM_CCSR); + + if (parent == &pll2_sw_clk) + reg &= ~MXC_CCM_CCSR_PLL2_SW_CLK_SEL; + else + reg |= MXC_CCM_CCSR_PLL2_SW_CLK_SEL; + + __raw_writel(reg, MXC_CCM_CCSR); + return 0; +} + +static int _clk_lp_apm_set_parent(struct clk *clk, struct clk *parent) +{ + u32 reg; + + if (parent == &osc_clk) + reg = __raw_readl(MXC_CCM_CCSR) & ~MXC_CCM_CCSR_LP_APM_SEL; + else + return -EINVAL; + + __raw_writel(reg, MXC_CCM_CCSR); + + return 0; +} + +static unsigned long clk_cpu_get_rate(struct clk *clk) +{ + u32 cacrr, div; + unsigned long parent_rate; + + parent_rate = clk_get_rate(clk->parent); + cacrr = __raw_readl(MXC_CCM_CACRR); + div = (cacrr & MXC_CCM_CACRR_ARM_PODF_MASK) + 1; + + return parent_rate / div; +} + +static int clk_cpu_set_rate(struct clk *clk, unsigned long rate) +{ + u32 reg, cpu_podf; + unsigned long parent_rate; + + parent_rate = clk_get_rate(clk->parent); + cpu_podf = parent_rate / rate - 1; + /* use post divider to change freq */ + reg = __raw_readl(MXC_CCM_CACRR); + reg &= ~MXC_CCM_CACRR_ARM_PODF_MASK; + reg |= cpu_podf << MXC_CCM_CACRR_ARM_PODF_OFFSET; + __raw_writel(reg, MXC_CCM_CACRR); + + return 0; +} + +static int _clk_periph_apm_set_parent(struct clk *clk, struct clk *parent) +{ + u32 reg, mux; + int i = 0; + + mux = _get_mux(parent, &pll1_sw_clk, &pll3_sw_clk, &lp_apm_clk, NULL); + + reg = __raw_readl(MXC_CCM_CBCMR) & ~MXC_CCM_CBCMR_PERIPH_CLK_SEL_MASK; + reg |= mux << MXC_CCM_CBCMR_PERIPH_CLK_SEL_OFFSET; + __raw_writel(reg, MXC_CCM_CBCMR); + + /* Wait for lock */ + do { + reg = __raw_readl(MXC_CCM_CDHIPR); + if (!(reg & MXC_CCM_CDHIPR_PERIPH_CLK_SEL_BUSY)) + break; + + udelay(1); + } while (++i < MAX_DPLL_WAIT_TRIES); + + if (i == MAX_DPLL_WAIT_TRIES) { + pr_err("MX5: Set parent for periph_apm clock failed\n"); + return -EINVAL; + } + + return 0; +} + +static int _clk_main_bus_set_parent(struct clk *clk, struct clk *parent) +{ + u32 reg; + + reg = __raw_readl(MXC_CCM_CBCDR); + + if (parent == &pll2_sw_clk) + reg &= ~MXC_CCM_CBCDR_PERIPH_CLK_SEL; + else if (parent == &periph_apm_clk) + reg |= MXC_CCM_CBCDR_PERIPH_CLK_SEL; + else + return -EINVAL; + + __raw_writel(reg, MXC_CCM_CBCDR); + + return 0; +} + +static struct clk main_bus_clk = { + .parent = &pll2_sw_clk, + .set_parent = _clk_main_bus_set_parent, +}; + +static unsigned long clk_ahb_get_rate(struct clk *clk) +{ + u32 reg, div; + unsigned long parent_rate; + + parent_rate = clk_get_rate(clk->parent); + + reg = __raw_readl(MXC_CCM_CBCDR); + div = ((reg & MXC_CCM_CBCDR_AHB_PODF_MASK) >> + MXC_CCM_CBCDR_AHB_PODF_OFFSET) + 1; + return parent_rate / div; +} + + +static int _clk_ahb_set_rate(struct clk *clk, unsigned long rate) +{ + u32 reg, div; + unsigned long parent_rate; + int i = 0; + + parent_rate = clk_get_rate(clk->parent); + + div = parent_rate / rate; + if (div > 8 || div < 1 || ((parent_rate / div) != rate)) + return -EINVAL; + + reg = __raw_readl(MXC_CCM_CBCDR); + reg &= ~MXC_CCM_CBCDR_AHB_PODF_MASK; + reg |= (div - 1) << MXC_CCM_CBCDR_AHB_PODF_OFFSET; + __raw_writel(reg, MXC_CCM_CBCDR); + + /* Wait for lock */ + do { + reg = __raw_readl(MXC_CCM_CDHIPR); + if (!(reg & MXC_CCM_CDHIPR_AHB_PODF_BUSY)) + break; + + udelay(1); + } while (++i < MAX_DPLL_WAIT_TRIES); + + if (i == MAX_DPLL_WAIT_TRIES) { + pr_err("MX5: clk_ahb_set_rate failed\n"); + return -EINVAL; + } + + return 0; +} + +static unsigned long _clk_ahb_round_rate(struct clk *clk, + unsigned long rate) +{ + u32 div; + unsigned long parent_rate; + + parent_rate = clk_get_rate(clk->parent); + + div = parent_rate / rate; + if (div > 8) + div = 8; + else if (div == 0) + div++; + return parent_rate / div; +} + + +static int _clk_max_enable(struct clk *clk) +{ + u32 reg; + + _clk_ccgr_enable(clk); + + /* Handshake with MAX when LPM is entered. */ + reg = __raw_readl(MXC_CCM_CLPCR); + if (cpu_is_mx51()) + reg &= ~MX51_CCM_CLPCR_BYPASS_MAX_LPM_HS; + else if (cpu_is_mx53()) + reg &= ~MX53_CCM_CLPCR_BYPASS_MAX_LPM_HS; + __raw_writel(reg, MXC_CCM_CLPCR); + + return 0; +} + +static void _clk_max_disable(struct clk *clk) +{ + u32 reg; + + _clk_ccgr_disable_inwait(clk); + + /* No Handshake with MAX when LPM is entered as its disabled. */ + reg = __raw_readl(MXC_CCM_CLPCR); + if (cpu_is_mx51()) + reg |= MX51_CCM_CLPCR_BYPASS_MAX_LPM_HS; + else if (cpu_is_mx53()) + reg &= ~MX53_CCM_CLPCR_BYPASS_MAX_LPM_HS; + __raw_writel(reg, MXC_CCM_CLPCR); +} + +static unsigned long clk_ipg_get_rate(struct clk *clk) +{ + u32 reg, div; + unsigned long parent_rate; + + parent_rate = clk_get_rate(clk->parent); + + reg = __raw_readl(MXC_CCM_CBCDR); + div = ((reg & MXC_CCM_CBCDR_IPG_PODF_MASK) >> + MXC_CCM_CBCDR_IPG_PODF_OFFSET) + 1; + + return parent_rate / div; +} + +static unsigned long clk_ipg_per_get_rate(struct clk *clk) +{ + u32 reg, prediv1, prediv2, podf; + unsigned long parent_rate; + + parent_rate = clk_get_rate(clk->parent); + + if (clk->parent == &main_bus_clk || clk->parent == &lp_apm_clk) { + /* the main_bus_clk is the one before the DVFS engine */ + reg = __raw_readl(MXC_CCM_CBCDR); + prediv1 = ((reg & MXC_CCM_CBCDR_PERCLK_PRED1_MASK) >> + MXC_CCM_CBCDR_PERCLK_PRED1_OFFSET) + 1; + prediv2 = ((reg & MXC_CCM_CBCDR_PERCLK_PRED2_MASK) >> + MXC_CCM_CBCDR_PERCLK_PRED2_OFFSET) + 1; + podf = ((reg & MXC_CCM_CBCDR_PERCLK_PODF_MASK) >> + MXC_CCM_CBCDR_PERCLK_PODF_OFFSET) + 1; + return parent_rate / (prediv1 * prediv2 * podf); + } else if (clk->parent == &ipg_clk) + return parent_rate; + else + BUG(); +} + +static int _clk_ipg_per_set_parent(struct clk *clk, struct clk *parent) +{ + u32 reg; + + reg = __raw_readl(MXC_CCM_CBCMR); + + reg &= ~MXC_CCM_CBCMR_PERCLK_LP_APM_CLK_SEL; + reg &= ~MXC_CCM_CBCMR_PERCLK_IPG_CLK_SEL; + + if (parent == &ipg_clk) + reg |= MXC_CCM_CBCMR_PERCLK_IPG_CLK_SEL; + else if (parent == &lp_apm_clk) + reg |= MXC_CCM_CBCMR_PERCLK_LP_APM_CLK_SEL; + else if (parent != &main_bus_clk) + return -EINVAL; + + __raw_writel(reg, MXC_CCM_CBCMR); + + return 0; +} + +#define clk_nfc_set_parent NULL + +static unsigned long clk_nfc_get_rate(struct clk *clk) +{ + unsigned long rate; + u32 reg, div; + + reg = __raw_readl(MXC_CCM_CBCDR); + div = ((reg & MXC_CCM_CBCDR_NFC_PODF_MASK) >> + MXC_CCM_CBCDR_NFC_PODF_OFFSET) + 1; + rate = clk_get_rate(clk->parent) / div; + WARN_ON(rate == 0); + return rate; +} + +static unsigned long clk_nfc_round_rate(struct clk *clk, + unsigned long rate) +{ + u32 div; + unsigned long parent_rate = clk_get_rate(clk->parent); + + if (!rate) + return -EINVAL; + + div = parent_rate / rate; + + if (parent_rate % rate) + div++; + + if (div > 8) + return -EINVAL; + + return parent_rate / div; + +} + +static int clk_nfc_set_rate(struct clk *clk, unsigned long rate) +{ + u32 reg, div; + + div = clk_get_rate(clk->parent) / rate; + if (div == 0) + div++; + if (((clk_get_rate(clk->parent) / div) != rate) || (div > 8)) + return -EINVAL; + + reg = __raw_readl(MXC_CCM_CBCDR); + reg &= ~MXC_CCM_CBCDR_NFC_PODF_MASK; + reg |= (div - 1) << MXC_CCM_CBCDR_NFC_PODF_OFFSET; + __raw_writel(reg, MXC_CCM_CBCDR); + + while (__raw_readl(MXC_CCM_CDHIPR) & + MXC_CCM_CDHIPR_NFC_IPG_INT_MEM_PODF_BUSY){ + } + + return 0; +} + +static unsigned long get_high_reference_clock_rate(struct clk *clk) +{ + return external_high_reference; +} + +static unsigned long get_low_reference_clock_rate(struct clk *clk) +{ + return external_low_reference; +} + +static unsigned long get_oscillator_reference_clock_rate(struct clk *clk) +{ + return oscillator_reference; +} + +static unsigned long get_ckih2_reference_clock_rate(struct clk *clk) +{ + return ckih2_reference; +} + +static unsigned long clk_emi_slow_get_rate(struct clk *clk) +{ + u32 reg, div; + + reg = __raw_readl(MXC_CCM_CBCDR); + div = ((reg & MXC_CCM_CBCDR_EMI_PODF_MASK) >> + MXC_CCM_CBCDR_EMI_PODF_OFFSET) + 1; + + return clk_get_rate(clk->parent) / div; +} + +static unsigned long _clk_ddr_hf_get_rate(struct clk *clk) +{ + unsigned long rate; + u32 reg, div; + + reg = __raw_readl(MXC_CCM_CBCDR); + div = ((reg & MXC_CCM_CBCDR_DDR_PODF_MASK) >> + MXC_CCM_CBCDR_DDR_PODF_OFFSET) + 1; + rate = clk_get_rate(clk->parent) / div; + + return rate; +} + +/* External high frequency clock */ +static struct clk ckih_clk = { + .get_rate = get_high_reference_clock_rate, +}; + +static struct clk ckih2_clk = { + .get_rate = get_ckih2_reference_clock_rate, +}; + +static struct clk osc_clk = { + .get_rate = get_oscillator_reference_clock_rate, +}; + +/* External low frequency (32kHz) clock */ +static struct clk ckil_clk = { + .get_rate = get_low_reference_clock_rate, +}; + +static struct clk pll1_main_clk = { + .parent = &osc_clk, + .get_rate = clk_pll_get_rate, + .enable = _clk_pll_enable, + .disable = _clk_pll_disable, +}; + +/* Clock tree block diagram (WIP): + * CCM: Clock Controller Module + * + * PLL output -> | + * | CCM Switcher -> CCM_CLK_ROOT_GEN -> + * PLL bypass -> | + * + */ + +/* PLL1 SW supplies to ARM core */ +static struct clk pll1_sw_clk = { + .parent = &pll1_main_clk, + .set_parent = _clk_pll1_sw_set_parent, + .get_rate = clk_pll1_sw_get_rate, +}; + +/* PLL2 SW supplies to AXI/AHB/IP buses */ +static struct clk pll2_sw_clk = { + .parent = &osc_clk, + .get_rate = clk_pll_get_rate, + .set_rate = _clk_pll_set_rate, + .set_parent = _clk_pll2_sw_set_parent, + .enable = _clk_pll_enable, + .disable = _clk_pll_disable, +}; + +/* PLL3 SW supplies to serial clocks like USB, SSI, etc. */ +static struct clk pll3_sw_clk = { + .parent = &osc_clk, + .set_rate = _clk_pll_set_rate, + .get_rate = clk_pll_get_rate, + .enable = _clk_pll_enable, + .disable = _clk_pll_disable, +}; + +/* PLL4 SW supplies to LVDS Display Bridge(LDB) */ +static struct clk mx53_pll4_sw_clk = { + .parent = &osc_clk, + .set_rate = _clk_pll_set_rate, + .enable = _clk_pll_enable, + .disable = _clk_pll_disable, +}; + +/* Low-power Audio Playback Mode clock */ +static struct clk lp_apm_clk = { + .parent = &osc_clk, + .set_parent = _clk_lp_apm_set_parent, +}; + +static struct clk periph_apm_clk = { + .parent = &pll1_sw_clk, + .set_parent = _clk_periph_apm_set_parent, +}; + +static struct clk cpu_clk = { + .parent = &pll1_sw_clk, + .get_rate = clk_cpu_get_rate, + .set_rate = clk_cpu_set_rate, +}; + +static struct clk ahb_clk = { + .parent = &main_bus_clk, + .get_rate = clk_ahb_get_rate, + .set_rate = _clk_ahb_set_rate, + .round_rate = _clk_ahb_round_rate, +}; + +static struct clk iim_clk = { + .parent = &ipg_clk, + .enable_reg = MXC_CCM_CCGR0, + .enable_shift = MXC_CCM_CCGRx_CG15_OFFSET, +}; + +/* Main IP interface clock for access to registers */ +static struct clk ipg_clk = { + .parent = &ahb_clk, + .get_rate = clk_ipg_get_rate, +}; + +static struct clk ipg_perclk = { + .parent = &lp_apm_clk, + .get_rate = clk_ipg_per_get_rate, + .set_parent = _clk_ipg_per_set_parent, +}; + +static struct clk ahb_max_clk = { + .parent = &ahb_clk, + .enable_reg = MXC_CCM_CCGR0, + .enable_shift = MXC_CCM_CCGRx_CG14_OFFSET, + .enable = _clk_max_enable, + .disable = _clk_max_disable, +}; + +static struct clk aips_tz1_clk = { + .parent = &ahb_clk, + .secondary = &ahb_max_clk, + .enable_reg = MXC_CCM_CCGR0, + .enable_shift = MXC_CCM_CCGRx_CG12_OFFSET, + .enable = _clk_ccgr_enable, + .disable = _clk_ccgr_disable_inwait, +}; + +static struct clk aips_tz2_clk = { + .parent = &ahb_clk, + .secondary = &ahb_max_clk, + .enable_reg = MXC_CCM_CCGR0, + .enable_shift = MXC_CCM_CCGRx_CG13_OFFSET, + .enable = _clk_ccgr_enable, + .disable = _clk_ccgr_disable_inwait, +}; + +static struct clk gpc_dvfs_clk = { + .enable_reg = MXC_CCM_CCGR5, + .enable_shift = MXC_CCM_CCGRx_CG12_OFFSET, + .enable = _clk_ccgr_enable, + .disable = _clk_ccgr_disable, +}; + +static struct clk gpt_32k_clk = { + .id = 0, + .parent = &ckil_clk, +}; + +static struct clk dummy_clk = { + .id = 0, +}; + +static struct clk emi_slow_clk = { + .parent = &pll2_sw_clk, + .enable_reg = MXC_CCM_CCGR5, + .enable_shift = MXC_CCM_CCGRx_CG8_OFFSET, + .enable = _clk_ccgr_enable, + .disable = _clk_ccgr_disable_inwait, + .get_rate = clk_emi_slow_get_rate, +}; + +static int clk_ipu_enable(struct clk *clk) +{ + u32 reg; + + _clk_ccgr_enable(clk); + + /* Enable handshake with IPU when certain clock rates are changed */ + reg = __raw_readl(MXC_CCM_CCDR); + reg &= ~MXC_CCM_CCDR_IPU_HS_MASK; + __raw_writel(reg, MXC_CCM_CCDR); + + /* Enable handshake with IPU when LPM is entered */ + reg = __raw_readl(MXC_CCM_CLPCR); + reg &= ~MXC_CCM_CLPCR_BYPASS_IPU_LPM_HS; + __raw_writel(reg, MXC_CCM_CLPCR); + + return 0; +} + +static void clk_ipu_disable(struct clk *clk) +{ + u32 reg; + + _clk_ccgr_disable(clk); + + /* Disable handshake with IPU whe dividers are changed */ + reg = __raw_readl(MXC_CCM_CCDR); + reg |= MXC_CCM_CCDR_IPU_HS_MASK; + __raw_writel(reg, MXC_CCM_CCDR); + + /* Disable handshake with IPU when LPM is entered */ + reg = __raw_readl(MXC_CCM_CLPCR); + reg |= MXC_CCM_CLPCR_BYPASS_IPU_LPM_HS; + __raw_writel(reg, MXC_CCM_CLPCR); +} + +static struct clk ahbmux1_clk = { + .parent = &ahb_clk, + .secondary = &ahb_max_clk, + .enable_reg = MXC_CCM_CCGR0, + .enable_shift = MXC_CCM_CCGRx_CG8_OFFSET, + .enable = _clk_ccgr_enable, + .disable = _clk_ccgr_disable_inwait, +}; + +static struct clk ipu_sec_clk = { + .parent = &emi_fast_clk, + .secondary = &ahbmux1_clk, +}; + +static struct clk ddr_hf_clk = { + .parent = &pll1_sw_clk, + .get_rate = _clk_ddr_hf_get_rate, +}; + +static struct clk ddr_clk = { + .parent = &ddr_hf_clk, +}; + +/* clock definitions for MIPI HSC unit which has been removed + * from documentation, but not from hardware + */ +static int _clk_hsc_enable(struct clk *clk) +{ + u32 reg; + + _clk_ccgr_enable(clk); + /* Handshake with IPU when certain clock rates are changed. */ + reg = __raw_readl(MXC_CCM_CCDR); + reg &= ~MXC_CCM_CCDR_HSC_HS_MASK; + __raw_writel(reg, MXC_CCM_CCDR); + + reg = __raw_readl(MXC_CCM_CLPCR); + reg &= ~MXC_CCM_CLPCR_BYPASS_HSC_LPM_HS; + __raw_writel(reg, MXC_CCM_CLPCR); + + return 0; +} + +static void _clk_hsc_disable(struct clk *clk) +{ + u32 reg; + + _clk_ccgr_disable(clk); + /* No handshake with HSC as its not enabled. */ + reg = __raw_readl(MXC_CCM_CCDR); + reg |= MXC_CCM_CCDR_HSC_HS_MASK; + __raw_writel(reg, MXC_CCM_CCDR); + + reg = __raw_readl(MXC_CCM_CLPCR); + reg |= MXC_CCM_CLPCR_BYPASS_HSC_LPM_HS; + __raw_writel(reg, MXC_CCM_CLPCR); +} + +static struct clk mipi_hsp_clk = { + .parent = &ipu_clk, + .enable_reg = MXC_CCM_CCGR4, + .enable_shift = MXC_CCM_CCGRx_CG6_OFFSET, + .enable = _clk_hsc_enable, + .disable = _clk_hsc_disable, + .secondary = &mipi_hsc1_clk, +}; + +#define DEFINE_CLOCK_CCGR(name, i, er, es, pfx, p, s) \ + static struct clk name = { \ + .id = i, \ + .enable_reg = er, \ + .enable_shift = es, \ + .get_rate = pfx##_get_rate, \ + .set_rate = pfx##_set_rate, \ + .round_rate = pfx##_round_rate, \ + .set_parent = pfx##_set_parent, \ + .enable = _clk_ccgr_enable, \ + .disable = _clk_ccgr_disable, \ + .parent = p, \ + .secondary = s, \ + } + +#define DEFINE_CLOCK_MAX(name, i, er, es, pfx, p, s) \ + static struct clk name = { \ + .id = i, \ + .enable_reg = er, \ + .enable_shift = es, \ + .get_rate = pfx##_get_rate, \ + .set_rate = pfx##_set_rate, \ + .set_parent = pfx##_set_parent, \ + .enable = _clk_max_enable, \ + .disable = _clk_max_disable, \ + .parent = p, \ + .secondary = s, \ + } + +#define CLK_GET_RATE(name, nr, bitsname) \ +static unsigned long clk_##name##_get_rate(struct clk *clk) \ +{ \ + u32 reg, pred, podf; \ + \ + reg = __raw_readl(MXC_CCM_CSCDR##nr); \ + pred = (reg & MXC_CCM_CSCDR##nr##_##bitsname##_CLK_PRED_MASK) \ + >> MXC_CCM_CSCDR##nr##_##bitsname##_CLK_PRED_OFFSET; \ + podf = (reg & MXC_CCM_CSCDR##nr##_##bitsname##_CLK_PODF_MASK) \ + >> MXC_CCM_CSCDR##nr##_##bitsname##_CLK_PODF_OFFSET; \ + \ + return DIV_ROUND_CLOSEST(clk_get_rate(clk->parent), \ + (pred + 1) * (podf + 1)); \ +} + +#define CLK_SET_PARENT(name, nr, bitsname) \ +static int clk_##name##_set_parent(struct clk *clk, struct clk *parent) \ +{ \ + u32 reg, mux; \ + \ + mux = _get_mux(parent, &pll1_sw_clk, &pll2_sw_clk, \ + &pll3_sw_clk, &lp_apm_clk); \ + reg = __raw_readl(MXC_CCM_CSCMR##nr) & \ + ~MXC_CCM_CSCMR##nr##_##bitsname##_CLK_SEL_MASK; \ + reg |= mux << MXC_CCM_CSCMR##nr##_##bitsname##_CLK_SEL_OFFSET; \ + __raw_writel(reg, MXC_CCM_CSCMR##nr); \ + \ + return 0; \ +} + +#define CLK_SET_RATE(name, nr, bitsname) \ +static int clk_##name##_set_rate(struct clk *clk, unsigned long rate) \ +{ \ + u32 reg, div, parent_rate; \ + u32 pre = 0, post = 0; \ + \ + parent_rate = clk_get_rate(clk->parent); \ + div = parent_rate / rate; \ + \ + if ((parent_rate / div) != rate) \ + return -EINVAL; \ + \ + __calc_pre_post_dividers(div, &pre, &post, \ + (MXC_CCM_CSCDR##nr##_##bitsname##_CLK_PRED_MASK >> \ + MXC_CCM_CSCDR##nr##_##bitsname##_CLK_PRED_OFFSET) + 1, \ + (MXC_CCM_CSCDR##nr##_##bitsname##_CLK_PODF_MASK >> \ + MXC_CCM_CSCDR##nr##_##bitsname##_CLK_PODF_OFFSET) + 1);\ + \ + /* Set sdhc1 clock divider */ \ + reg = __raw_readl(MXC_CCM_CSCDR##nr) & \ + ~(MXC_CCM_CSCDR##nr##_##bitsname##_CLK_PRED_MASK \ + | MXC_CCM_CSCDR##nr##_##bitsname##_CLK_PODF_MASK); \ + reg |= (post - 1) << \ + MXC_CCM_CSCDR##nr##_##bitsname##_CLK_PODF_OFFSET; \ + reg |= (pre - 1) << \ + MXC_CCM_CSCDR##nr##_##bitsname##_CLK_PRED_OFFSET; \ + __raw_writel(reg, MXC_CCM_CSCDR##nr); \ + \ + return 0; \ +} + +/* UART */ +CLK_GET_RATE(uart, 1, UART) +CLK_SET_PARENT(uart, 1, UART) + +static struct clk uart_root_clk = { + .parent = &pll2_sw_clk, + .get_rate = clk_uart_get_rate, + .set_parent = clk_uart_set_parent, +}; + +/* USBOH3 */ +CLK_GET_RATE(usboh3, 1, USBOH3) +CLK_SET_PARENT(usboh3, 1, USBOH3) + +static struct clk usboh3_clk = { + .parent = &pll2_sw_clk, + .get_rate = clk_usboh3_get_rate, + .set_parent = clk_usboh3_set_parent, + .enable = _clk_ccgr_enable, + .disable = _clk_ccgr_disable, + .enable_reg = MXC_CCM_CCGR2, + .enable_shift = MXC_CCM_CCGRx_CG14_OFFSET, +}; + +static struct clk usb_ahb_clk = { + .parent = &ipg_clk, + .enable = _clk_ccgr_enable, + .disable = _clk_ccgr_disable, + .enable_reg = MXC_CCM_CCGR2, + .enable_shift = MXC_CCM_CCGRx_CG13_OFFSET, +}; + +static int clk_usb_phy1_set_parent(struct clk *clk, struct clk *parent) +{ + u32 reg; + + reg = __raw_readl(MXC_CCM_CSCMR1) & ~MXC_CCM_CSCMR1_USB_PHY_CLK_SEL; + + if (parent == &pll3_sw_clk) + reg |= 1 << MXC_CCM_CSCMR1_USB_PHY_CLK_SEL_OFFSET; + + __raw_writel(reg, MXC_CCM_CSCMR1); + + return 0; +} + +static struct clk usb_phy1_clk = { + .parent = &pll3_sw_clk, + .set_parent = clk_usb_phy1_set_parent, + .enable = _clk_ccgr_enable, + .enable_reg = MXC_CCM_CCGR2, + .enable_shift = MXC_CCM_CCGRx_CG0_OFFSET, + .disable = _clk_ccgr_disable, +}; + +/* eCSPI */ +CLK_GET_RATE(ecspi, 2, CSPI) +CLK_SET_PARENT(ecspi, 1, CSPI) + +static struct clk ecspi_main_clk = { + .parent = &pll3_sw_clk, + .get_rate = clk_ecspi_get_rate, + .set_parent = clk_ecspi_set_parent, +}; + +/* eSDHC */ +CLK_GET_RATE(esdhc1, 1, ESDHC1_MSHC1) +CLK_SET_PARENT(esdhc1, 1, ESDHC1_MSHC1) +CLK_SET_RATE(esdhc1, 1, ESDHC1_MSHC1) + +/* mx51 specific */ +CLK_GET_RATE(esdhc2, 1, ESDHC2_MSHC2) +CLK_SET_PARENT(esdhc2, 1, ESDHC2_MSHC2) +CLK_SET_RATE(esdhc2, 1, ESDHC2_MSHC2) + +static int clk_esdhc3_set_parent(struct clk *clk, struct clk *parent) +{ + u32 reg; + + reg = __raw_readl(MXC_CCM_CSCMR1); + if (parent == &esdhc1_clk) + reg &= ~MXC_CCM_CSCMR1_ESDHC3_CLK_SEL; + else if (parent == &esdhc2_clk) + reg |= MXC_CCM_CSCMR1_ESDHC3_CLK_SEL; + else + return -EINVAL; + __raw_writel(reg, MXC_CCM_CSCMR1); + + return 0; +} + +static int clk_esdhc4_set_parent(struct clk *clk, struct clk *parent) +{ + u32 reg; + + reg = __raw_readl(MXC_CCM_CSCMR1); + if (parent == &esdhc1_clk) + reg &= ~MXC_CCM_CSCMR1_ESDHC4_CLK_SEL; + else if (parent == &esdhc2_clk) + reg |= MXC_CCM_CSCMR1_ESDHC4_CLK_SEL; + else + return -EINVAL; + __raw_writel(reg, MXC_CCM_CSCMR1); + + return 0; +} + +/* mx53 specific */ +static int clk_esdhc2_mx53_set_parent(struct clk *clk, struct clk *parent) +{ + u32 reg; + + reg = __raw_readl(MXC_CCM_CSCMR1); + if (parent == &esdhc1_clk) + reg &= ~MXC_CCM_CSCMR1_ESDHC2_MSHC2_MX53_CLK_SEL; + else if (parent == &esdhc3_mx53_clk) + reg |= MXC_CCM_CSCMR1_ESDHC2_MSHC2_MX53_CLK_SEL; + else + return -EINVAL; + __raw_writel(reg, MXC_CCM_CSCMR1); + + return 0; +} + +CLK_GET_RATE(esdhc3_mx53, 1, ESDHC3_MX53) +CLK_SET_PARENT(esdhc3_mx53, 1, ESDHC3_MX53) +CLK_SET_RATE(esdhc3_mx53, 1, ESDHC3_MX53) + +static int clk_esdhc4_mx53_set_parent(struct clk *clk, struct clk *parent) +{ + u32 reg; + + reg = __raw_readl(MXC_CCM_CSCMR1); + if (parent == &esdhc1_clk) + reg &= ~MXC_CCM_CSCMR1_ESDHC4_CLK_SEL; + else if (parent == &esdhc3_mx53_clk) + reg |= MXC_CCM_CSCMR1_ESDHC4_CLK_SEL; + else + return -EINVAL; + __raw_writel(reg, MXC_CCM_CSCMR1); + + return 0; +} + +#define DEFINE_CLOCK_FULL(name, i, er, es, gr, sr, e, d, p, s) \ + static struct clk name = { \ + .id = i, \ + .enable_reg = er, \ + .enable_shift = es, \ + .get_rate = gr, \ + .set_rate = sr, \ + .enable = e, \ + .disable = d, \ + .parent = p, \ + .secondary = s, \ + } + +#define DEFINE_CLOCK(name, i, er, es, gr, sr, p, s) \ + DEFINE_CLOCK_FULL(name, i, er, es, gr, sr, _clk_ccgr_enable, _clk_ccgr_disable, p, s) + +/* Shared peripheral bus arbiter */ +DEFINE_CLOCK(spba_clk, 0, MXC_CCM_CCGR5, MXC_CCM_CCGRx_CG0_OFFSET, + NULL, NULL, &ipg_clk, NULL); + +/* UART */ +DEFINE_CLOCK(uart1_ipg_clk, 0, MXC_CCM_CCGR1, MXC_CCM_CCGRx_CG3_OFFSET, + NULL, NULL, &ipg_clk, &aips_tz1_clk); +DEFINE_CLOCK(uart2_ipg_clk, 1, MXC_CCM_CCGR1, MXC_CCM_CCGRx_CG5_OFFSET, + NULL, NULL, &ipg_clk, &aips_tz1_clk); +DEFINE_CLOCK(uart3_ipg_clk, 2, MXC_CCM_CCGR1, MXC_CCM_CCGRx_CG7_OFFSET, + NULL, NULL, &ipg_clk, &spba_clk); +DEFINE_CLOCK(uart4_ipg_clk, 3, MXC_CCM_CCGR7, MXC_CCM_CCGRx_CG4_OFFSET, + NULL, NULL, &ipg_clk, &spba_clk); +DEFINE_CLOCK(uart5_ipg_clk, 4, MXC_CCM_CCGR7, MXC_CCM_CCGRx_CG6_OFFSET, + NULL, NULL, &ipg_clk, &spba_clk); +DEFINE_CLOCK(uart1_clk, 0, MXC_CCM_CCGR1, MXC_CCM_CCGRx_CG4_OFFSET, + NULL, NULL, &uart_root_clk, &uart1_ipg_clk); +DEFINE_CLOCK(uart2_clk, 1, MXC_CCM_CCGR1, MXC_CCM_CCGRx_CG6_OFFSET, + NULL, NULL, &uart_root_clk, &uart2_ipg_clk); +DEFINE_CLOCK(uart3_clk, 2, MXC_CCM_CCGR1, MXC_CCM_CCGRx_CG8_OFFSET, + NULL, NULL, &uart_root_clk, &uart3_ipg_clk); +DEFINE_CLOCK(uart4_clk, 3, MXC_CCM_CCGR7, MXC_CCM_CCGRx_CG5_OFFSET, + NULL, NULL, &uart_root_clk, &uart4_ipg_clk); +DEFINE_CLOCK(uart5_clk, 4, MXC_CCM_CCGR7, MXC_CCM_CCGRx_CG7_OFFSET, + NULL, NULL, &uart_root_clk, &uart5_ipg_clk); + +/* GPT */ +DEFINE_CLOCK(gpt_ipg_clk, 0, MXC_CCM_CCGR2, MXC_CCM_CCGRx_CG10_OFFSET, + NULL, NULL, &ipg_clk, NULL); +DEFINE_CLOCK(gpt_clk, 0, MXC_CCM_CCGR2, MXC_CCM_CCGRx_CG9_OFFSET, + NULL, NULL, &ipg_clk, &gpt_ipg_clk); + +DEFINE_CLOCK(pwm1_clk, 0, MXC_CCM_CCGR2, MXC_CCM_CCGRx_CG6_OFFSET, + NULL, NULL, &ipg_perclk, NULL); +DEFINE_CLOCK(pwm2_clk, 0, MXC_CCM_CCGR2, MXC_CCM_CCGRx_CG8_OFFSET, + NULL, NULL, &ipg_perclk, NULL); + +/* I2C */ +DEFINE_CLOCK(i2c1_clk, 0, MXC_CCM_CCGR1, MXC_CCM_CCGRx_CG9_OFFSET, + NULL, NULL, &ipg_perclk, NULL); +DEFINE_CLOCK(i2c2_clk, 1, MXC_CCM_CCGR1, MXC_CCM_CCGRx_CG10_OFFSET, + NULL, NULL, &ipg_perclk, NULL); +DEFINE_CLOCK(hsi2c_clk, 0, MXC_CCM_CCGR1, MXC_CCM_CCGRx_CG11_OFFSET, + NULL, NULL, &ipg_clk, NULL); +DEFINE_CLOCK(i2c3_mx53_clk, 0, MXC_CCM_CCGR1, MXC_CCM_CCGRx_CG11_OFFSET, + NULL, NULL, &ipg_perclk, NULL); + +/* FEC */ +DEFINE_CLOCK(fec_clk, 0, MXC_CCM_CCGR2, MXC_CCM_CCGRx_CG12_OFFSET, + NULL, NULL, &ipg_clk, NULL); + +/* NFC */ +DEFINE_CLOCK_CCGR(nfc_clk, 0, MXC_CCM_CCGR5, MXC_CCM_CCGRx_CG10_OFFSET, + clk_nfc, &emi_slow_clk, NULL); + +/* SSI */ +DEFINE_CLOCK(ssi1_ipg_clk, 0, MXC_CCM_CCGR3, MXC_CCM_CCGRx_CG8_OFFSET, + NULL, NULL, &ipg_clk, NULL); +DEFINE_CLOCK(ssi1_clk, 0, MXC_CCM_CCGR3, MXC_CCM_CCGRx_CG9_OFFSET, + NULL, NULL, &pll3_sw_clk, &ssi1_ipg_clk); +DEFINE_CLOCK(ssi2_ipg_clk, 1, MXC_CCM_CCGR3, MXC_CCM_CCGRx_CG10_OFFSET, + NULL, NULL, &ipg_clk, NULL); +DEFINE_CLOCK(ssi2_clk, 1, MXC_CCM_CCGR3, MXC_CCM_CCGRx_CG11_OFFSET, + NULL, NULL, &pll3_sw_clk, &ssi2_ipg_clk); +DEFINE_CLOCK(ssi3_ipg_clk, 2, MXC_CCM_CCGR3, MXC_CCM_CCGRx_CG12_OFFSET, + NULL, NULL, &ipg_clk, NULL); +DEFINE_CLOCK(ssi3_clk, 2, MXC_CCM_CCGR3, MXC_CCM_CCGRx_CG13_OFFSET, + NULL, NULL, &pll3_sw_clk, &ssi3_ipg_clk); + +/* eCSPI */ +DEFINE_CLOCK_FULL(ecspi1_ipg_clk, 0, MXC_CCM_CCGR4, MXC_CCM_CCGRx_CG9_OFFSET, + NULL, NULL, _clk_ccgr_enable_inrun, _clk_ccgr_disable, + &ipg_clk, &spba_clk); +DEFINE_CLOCK(ecspi1_clk, 0, MXC_CCM_CCGR4, MXC_CCM_CCGRx_CG10_OFFSET, + NULL, NULL, &ecspi_main_clk, &ecspi1_ipg_clk); +DEFINE_CLOCK_FULL(ecspi2_ipg_clk, 0, MXC_CCM_CCGR4, MXC_CCM_CCGRx_CG11_OFFSET, + NULL, NULL, _clk_ccgr_enable_inrun, _clk_ccgr_disable, + &ipg_clk, &aips_tz2_clk); +DEFINE_CLOCK(ecspi2_clk, 0, MXC_CCM_CCGR4, MXC_CCM_CCGRx_CG12_OFFSET, + NULL, NULL, &ecspi_main_clk, &ecspi2_ipg_clk); + +/* CSPI */ +DEFINE_CLOCK(cspi_ipg_clk, 0, MXC_CCM_CCGR4, MXC_CCM_CCGRx_CG9_OFFSET, + NULL, NULL, &ipg_clk, &aips_tz2_clk); +DEFINE_CLOCK(cspi_clk, 0, MXC_CCM_CCGR4, MXC_CCM_CCGRx_CG13_OFFSET, + NULL, NULL, &ipg_clk, &cspi_ipg_clk); + +/* SDMA */ +DEFINE_CLOCK(sdma_clk, 1, MXC_CCM_CCGR4, MXC_CCM_CCGRx_CG15_OFFSET, + NULL, NULL, &ahb_clk, NULL); + +/* eSDHC */ +DEFINE_CLOCK_FULL(esdhc1_ipg_clk, 0, MXC_CCM_CCGR3, MXC_CCM_CCGRx_CG0_OFFSET, + NULL, NULL, _clk_max_enable, _clk_max_disable, &ipg_clk, NULL); +DEFINE_CLOCK_MAX(esdhc1_clk, 0, MXC_CCM_CCGR3, MXC_CCM_CCGRx_CG1_OFFSET, + clk_esdhc1, &pll2_sw_clk, &esdhc1_ipg_clk); +DEFINE_CLOCK_FULL(esdhc2_ipg_clk, 1, MXC_CCM_CCGR3, MXC_CCM_CCGRx_CG2_OFFSET, + NULL, NULL, _clk_max_enable, _clk_max_disable, &ipg_clk, NULL); +DEFINE_CLOCK_FULL(esdhc3_ipg_clk, 2, MXC_CCM_CCGR3, MXC_CCM_CCGRx_CG4_OFFSET, + NULL, NULL, _clk_max_enable, _clk_max_disable, &ipg_clk, NULL); +DEFINE_CLOCK_FULL(esdhc4_ipg_clk, 3, MXC_CCM_CCGR3, MXC_CCM_CCGRx_CG6_OFFSET, + NULL, NULL, _clk_max_enable, _clk_max_disable, &ipg_clk, NULL); + +/* mx51 specific */ +DEFINE_CLOCK_MAX(esdhc2_clk, 1, MXC_CCM_CCGR3, MXC_CCM_CCGRx_CG3_OFFSET, + clk_esdhc2, &pll2_sw_clk, &esdhc2_ipg_clk); + +static struct clk esdhc3_clk = { + .id = 2, + .parent = &esdhc1_clk, + .set_parent = clk_esdhc3_set_parent, + .enable_reg = MXC_CCM_CCGR3, + .enable_shift = MXC_CCM_CCGRx_CG5_OFFSET, + .enable = _clk_max_enable, + .disable = _clk_max_disable, + .secondary = &esdhc3_ipg_clk, +}; +static struct clk esdhc4_clk = { + .id = 3, + .parent = &esdhc1_clk, + .set_parent = clk_esdhc4_set_parent, + .enable_reg = MXC_CCM_CCGR3, + .enable_shift = MXC_CCM_CCGRx_CG7_OFFSET, + .enable = _clk_max_enable, + .disable = _clk_max_disable, + .secondary = &esdhc4_ipg_clk, +}; + +/* mx53 specific */ +static struct clk esdhc2_mx53_clk = { + .id = 2, + .parent = &esdhc1_clk, + .set_parent = clk_esdhc2_mx53_set_parent, + .enable_reg = MXC_CCM_CCGR3, + .enable_shift = MXC_CCM_CCGRx_CG3_OFFSET, + .enable = _clk_max_enable, + .disable = _clk_max_disable, + .secondary = &esdhc3_ipg_clk, +}; + +DEFINE_CLOCK_MAX(esdhc3_mx53_clk, 2, MXC_CCM_CCGR3, MXC_CCM_CCGRx_CG5_OFFSET, + clk_esdhc3_mx53, &pll2_sw_clk, &esdhc2_ipg_clk); + +static struct clk esdhc4_mx53_clk = { + .id = 3, + .parent = &esdhc1_clk, + .set_parent = clk_esdhc4_mx53_set_parent, + .enable_reg = MXC_CCM_CCGR3, + .enable_shift = MXC_CCM_CCGRx_CG7_OFFSET, + .enable = _clk_max_enable, + .disable = _clk_max_disable, + .secondary = &esdhc4_ipg_clk, +}; + +static struct clk sata_clk = { + .parent = &ipg_clk, + .enable = _clk_max_enable, + .enable_reg = MXC_CCM_CCGR4, + .enable_shift = MXC_CCM_CCGRx_CG1_OFFSET, + .disable = _clk_max_disable, +}; + +static struct clk ahci_phy_clk = { + .parent = &usb_phy1_clk, +}; + +static struct clk ahci_dma_clk = { + .parent = &ahb_clk, +}; + +DEFINE_CLOCK(mipi_esc_clk, 0, MXC_CCM_CCGR4, MXC_CCM_CCGRx_CG5_OFFSET, NULL, NULL, NULL, &pll2_sw_clk); +DEFINE_CLOCK(mipi_hsc2_clk, 0, MXC_CCM_CCGR4, MXC_CCM_CCGRx_CG4_OFFSET, NULL, NULL, &mipi_esc_clk, &pll2_sw_clk); +DEFINE_CLOCK(mipi_hsc1_clk, 0, MXC_CCM_CCGR4, MXC_CCM_CCGRx_CG3_OFFSET, NULL, NULL, &mipi_hsc2_clk, &pll2_sw_clk); + +/* IPU */ +DEFINE_CLOCK_FULL(ipu_clk, 0, MXC_CCM_CCGR5, MXC_CCM_CCGRx_CG5_OFFSET, + NULL, NULL, clk_ipu_enable, clk_ipu_disable, &ahb_clk, &ipu_sec_clk); + +DEFINE_CLOCK_FULL(emi_fast_clk, 0, MXC_CCM_CCGR5, MXC_CCM_CCGRx_CG7_OFFSET, + NULL, NULL, _clk_ccgr_enable, _clk_ccgr_disable_inwait, + &ddr_clk, NULL); + +DEFINE_CLOCK(ipu_di0_clk, 0, MXC_CCM_CCGR6, MXC_CCM_CCGRx_CG5_OFFSET, + NULL, NULL, &pll3_sw_clk, NULL); +DEFINE_CLOCK(ipu_di1_clk, 0, MXC_CCM_CCGR6, MXC_CCM_CCGRx_CG6_OFFSET, + NULL, NULL, &pll3_sw_clk, NULL); + +/* PATA */ +DEFINE_CLOCK(pata_clk, 0, MXC_CCM_CCGR4, MXC_CCM_CCGRx_CG0_OFFSET, + NULL, NULL, &ipg_clk, &spba_clk); + +#define _REGISTER_CLOCK(d, n, c) \ + { \ + .dev_id = d, \ + .con_id = n, \ + .clk = &c, \ + }, + +static struct clk_lookup mx51_lookups[] = { + /* i.mx51 has the i.mx21 type uart */ + _REGISTER_CLOCK("imx21-uart.0", NULL, uart1_clk) + _REGISTER_CLOCK("imx21-uart.1", NULL, uart2_clk) + _REGISTER_CLOCK("imx21-uart.2", NULL, uart3_clk) + _REGISTER_CLOCK(NULL, "gpt", gpt_clk) + /* i.mx51 has the i.mx27 type fec */ + _REGISTER_CLOCK("imx27-fec.0", NULL, fec_clk) + _REGISTER_CLOCK("mxc_pwm.0", "pwm", pwm1_clk) + _REGISTER_CLOCK("mxc_pwm.1", "pwm", pwm2_clk) + _REGISTER_CLOCK("imx-i2c.0", NULL, i2c1_clk) + _REGISTER_CLOCK("imx-i2c.1", NULL, i2c2_clk) + _REGISTER_CLOCK("imx-i2c.2", NULL, hsi2c_clk) + _REGISTER_CLOCK("mxc-ehci.0", "usb", usboh3_clk) + _REGISTER_CLOCK("mxc-ehci.0", "usb_ahb", usb_ahb_clk) + _REGISTER_CLOCK("mxc-ehci.0", "usb_phy1", usb_phy1_clk) + _REGISTER_CLOCK("mxc-ehci.1", "usb", usboh3_clk) + _REGISTER_CLOCK("mxc-ehci.1", "usb_ahb", usb_ahb_clk) + _REGISTER_CLOCK("mxc-ehci.2", "usb", usboh3_clk) + _REGISTER_CLOCK("mxc-ehci.2", "usb_ahb", usb_ahb_clk) + _REGISTER_CLOCK("fsl-usb2-udc", "usb", usboh3_clk) + _REGISTER_CLOCK("fsl-usb2-udc", "usb_ahb", ahb_clk) + _REGISTER_CLOCK("imx-keypad", NULL, dummy_clk) + _REGISTER_CLOCK("mxc_nand", NULL, nfc_clk) + _REGISTER_CLOCK("imx-ssi.0", NULL, ssi1_clk) + _REGISTER_CLOCK("imx-ssi.1", NULL, ssi2_clk) + _REGISTER_CLOCK("imx-ssi.2", NULL, ssi3_clk) + /* i.mx51 has the i.mx35 type sdma */ + _REGISTER_CLOCK("imx35-sdma", NULL, sdma_clk) + _REGISTER_CLOCK(NULL, "ckih", ckih_clk) + _REGISTER_CLOCK(NULL, "ckih2", ckih2_clk) + _REGISTER_CLOCK(NULL, "gpt_32k", gpt_32k_clk) + _REGISTER_CLOCK("imx51-ecspi.0", NULL, ecspi1_clk) + _REGISTER_CLOCK("imx51-ecspi.1", NULL, ecspi2_clk) + /* i.mx51 has the i.mx35 type cspi */ + _REGISTER_CLOCK("imx35-cspi.0", NULL, cspi_clk) + _REGISTER_CLOCK("sdhci-esdhc-imx51.0", NULL, esdhc1_clk) + _REGISTER_CLOCK("sdhci-esdhc-imx51.1", NULL, esdhc2_clk) + _REGISTER_CLOCK("sdhci-esdhc-imx51.2", NULL, esdhc3_clk) + _REGISTER_CLOCK("sdhci-esdhc-imx51.3", NULL, esdhc4_clk) + _REGISTER_CLOCK(NULL, "cpu_clk", cpu_clk) + _REGISTER_CLOCK(NULL, "iim_clk", iim_clk) + _REGISTER_CLOCK("imx2-wdt.0", NULL, dummy_clk) + _REGISTER_CLOCK("imx2-wdt.1", NULL, dummy_clk) + _REGISTER_CLOCK(NULL, "mipi_hsp", mipi_hsp_clk) + _REGISTER_CLOCK("imx-ipuv3", NULL, ipu_clk) + _REGISTER_CLOCK("imx-ipuv3", "di0", ipu_di0_clk) + _REGISTER_CLOCK("imx-ipuv3", "di1", ipu_di1_clk) + _REGISTER_CLOCK(NULL, "gpc_dvfs", gpc_dvfs_clk) + _REGISTER_CLOCK("pata_imx", NULL, pata_clk) +}; + +static struct clk_lookup mx53_lookups[] = { + /* i.mx53 has the i.mx21 type uart */ + _REGISTER_CLOCK("imx21-uart.0", NULL, uart1_clk) + _REGISTER_CLOCK("imx21-uart.1", NULL, uart2_clk) + _REGISTER_CLOCK("imx21-uart.2", NULL, uart3_clk) + _REGISTER_CLOCK("imx21-uart.3", NULL, uart4_clk) + _REGISTER_CLOCK("imx21-uart.4", NULL, uart5_clk) + _REGISTER_CLOCK(NULL, "gpt", gpt_clk) + /* i.mx53 has the i.mx25 type fec */ + _REGISTER_CLOCK("imx25-fec.0", NULL, fec_clk) + _REGISTER_CLOCK(NULL, "iim_clk", iim_clk) + _REGISTER_CLOCK("imx-i2c.0", NULL, i2c1_clk) + _REGISTER_CLOCK("imx-i2c.1", NULL, i2c2_clk) + _REGISTER_CLOCK("imx-i2c.2", NULL, i2c3_mx53_clk) + /* i.mx53 has the i.mx51 type ecspi */ + _REGISTER_CLOCK("imx51-ecspi.0", NULL, ecspi1_clk) + _REGISTER_CLOCK("imx51-ecspi.1", NULL, ecspi2_clk) + /* i.mx53 has the i.mx25 type cspi */ + _REGISTER_CLOCK("imx35-cspi.0", NULL, cspi_clk) + _REGISTER_CLOCK("sdhci-esdhc-imx53.0", NULL, esdhc1_clk) + _REGISTER_CLOCK("sdhci-esdhc-imx53.1", NULL, esdhc2_mx53_clk) + _REGISTER_CLOCK("sdhci-esdhc-imx53.2", NULL, esdhc3_mx53_clk) + _REGISTER_CLOCK("sdhci-esdhc-imx53.3", NULL, esdhc4_mx53_clk) + _REGISTER_CLOCK("imx2-wdt.0", NULL, dummy_clk) + _REGISTER_CLOCK("imx2-wdt.1", NULL, dummy_clk) + /* i.mx53 has the i.mx35 type sdma */ + _REGISTER_CLOCK("imx35-sdma", NULL, sdma_clk) + _REGISTER_CLOCK("imx-ssi.0", NULL, ssi1_clk) + _REGISTER_CLOCK("imx-ssi.1", NULL, ssi2_clk) + _REGISTER_CLOCK("imx-ssi.2", NULL, ssi3_clk) + _REGISTER_CLOCK("imx-keypad", NULL, dummy_clk) + _REGISTER_CLOCK("pata_imx", NULL, pata_clk) + _REGISTER_CLOCK("imx53-ahci.0", "ahci", sata_clk) + _REGISTER_CLOCK("imx53-ahci.0", "ahci_phy", ahci_phy_clk) + _REGISTER_CLOCK("imx53-ahci.0", "ahci_dma", ahci_dma_clk) +}; + +static void clk_tree_init(void) +{ + u32 reg; + + ipg_perclk.set_parent(&ipg_perclk, &lp_apm_clk); + + /* + * Initialise the IPG PER CLK dividers to 3. IPG_PER_CLK should be at + * 8MHz, its derived from lp_apm. + * + * FIXME: Verify if true for all boards + */ + reg = __raw_readl(MXC_CCM_CBCDR); + reg &= ~MXC_CCM_CBCDR_PERCLK_PRED1_MASK; + reg &= ~MXC_CCM_CBCDR_PERCLK_PRED2_MASK; + reg &= ~MXC_CCM_CBCDR_PERCLK_PODF_MASK; + reg |= (2 << MXC_CCM_CBCDR_PERCLK_PRED1_OFFSET); + __raw_writel(reg, MXC_CCM_CBCDR); +} + +int __init mx51_clocks_init(unsigned long ckil, unsigned long osc, + unsigned long ckih1, unsigned long ckih2) +{ + int i; + + external_low_reference = ckil; + external_high_reference = ckih1; + ckih2_reference = ckih2; + oscillator_reference = osc; + + for (i = 0; i < ARRAY_SIZE(mx51_lookups); i++) + clkdev_add(&mx51_lookups[i]); + + clk_tree_init(); + + clk_enable(&cpu_clk); + clk_enable(&main_bus_clk); + + clk_enable(&iim_clk); + imx_print_silicon_rev("i.MX51", mx51_revision()); + clk_disable(&iim_clk); + + /* move usb_phy_clk to 24MHz */ + clk_set_parent(&usb_phy1_clk, &osc_clk); + + /* set the usboh3_clk parent to pll2_sw_clk */ + clk_set_parent(&usboh3_clk, &pll2_sw_clk); + + /* Set SDHC parents to be PLL2 */ + clk_set_parent(&esdhc1_clk, &pll2_sw_clk); + clk_set_parent(&esdhc2_clk, &pll2_sw_clk); + + /* set SDHC root clock as 166.25MHZ*/ + clk_set_rate(&esdhc1_clk, 166250000); + clk_set_rate(&esdhc2_clk, 166250000); + + /* System timer */ + mxc_timer_init(&gpt_clk, MX51_IO_ADDRESS(MX51_GPT1_BASE_ADDR), + MX51_INT_GPT); + return 0; +} + +int __init mx53_clocks_init(unsigned long ckil, unsigned long osc, + unsigned long ckih1, unsigned long ckih2) +{ + int i; + + external_low_reference = ckil; + external_high_reference = ckih1; + ckih2_reference = ckih2; + oscillator_reference = osc; + + for (i = 0; i < ARRAY_SIZE(mx53_lookups); i++) + clkdev_add(&mx53_lookups[i]); + + clk_tree_init(); + + clk_set_parent(&uart_root_clk, &pll3_sw_clk); + clk_enable(&cpu_clk); + clk_enable(&main_bus_clk); + + clk_enable(&iim_clk); + imx_print_silicon_rev("i.MX53", mx53_revision()); + clk_disable(&iim_clk); + + /* Set SDHC parents to be PLL2 */ + clk_set_parent(&esdhc1_clk, &pll2_sw_clk); + clk_set_parent(&esdhc3_mx53_clk, &pll2_sw_clk); + + /* set SDHC root clock as 200MHZ*/ + clk_set_rate(&esdhc1_clk, 200000000); + clk_set_rate(&esdhc3_mx53_clk, 200000000); + + /* System timer */ + mxc_timer_init(&gpt_clk, MX53_IO_ADDRESS(MX53_GPT1_BASE_ADDR), + MX53_INT_GPT); + return 0; +} + +#ifdef CONFIG_OF +static void __init clk_get_freq_dt(unsigned long *ckil, unsigned long *osc, + unsigned long *ckih1, unsigned long *ckih2) +{ + struct device_node *np; + + /* retrieve the freqency of fixed clocks from device tree */ + for_each_compatible_node(np, NULL, "fixed-clock") { + u32 rate; + if (of_property_read_u32(np, "clock-frequency", &rate)) + continue; + + if (of_device_is_compatible(np, "fsl,imx-ckil")) + *ckil = rate; + else if (of_device_is_compatible(np, "fsl,imx-osc")) + *osc = rate; + else if (of_device_is_compatible(np, "fsl,imx-ckih1")) + *ckih1 = rate; + else if (of_device_is_compatible(np, "fsl,imx-ckih2")) + *ckih2 = rate; + } +} + +int __init mx51_clocks_init_dt(void) +{ + unsigned long ckil, osc, ckih1, ckih2; + + clk_get_freq_dt(&ckil, &osc, &ckih1, &ckih2); + return mx51_clocks_init(ckil, osc, ckih1, ckih2); +} + +int __init mx53_clocks_init_dt(void) +{ + unsigned long ckil, osc, ckih1, ckih2; + + clk_get_freq_dt(&ckil, &osc, &ckih1, &ckih2); + return mx53_clocks_init(ckil, osc, ckih1, ckih2); +} +#endif |