summaryrefslogtreecommitdiffstats
path: root/arch/arm/mach-mx5/clock-mx51-mx53.c
diff options
context:
space:
mode:
Diffstat (limited to 'arch/arm/mach-mx5/clock-mx51-mx53.c')
-rw-r--r--arch/arm/mach-mx5/clock-mx51-mx53.c1434
1 files changed, 1434 insertions, 0 deletions
diff --git a/arch/arm/mach-mx5/clock-mx51-mx53.c b/arch/arm/mach-mx5/clock-mx51-mx53.c
new file mode 100644
index 000000000000..0a19e7567c0b
--- /dev/null
+++ b/arch/arm/mach-mx5/clock-mx51-mx53.c
@@ -0,0 +1,1434 @@
+/*
+ * 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 <asm/div64.h>
+
+#include <mach/hardware.h>
+#include <mach/common.h>
+#include <mach/clock.h>
+
+#include "crm_regs.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;
+
+#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) | 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 gpt_32k_clk = {
+ .id = 0,
+ .parent = &ckil_clk,
+};
+
+static struct clk kpp_clk = {
+ .id = 0,
+};
+
+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)
+
+CLK_GET_RATE(esdhc2, 1, ESDHC2_MSHC2)
+CLK_SET_PARENT(esdhc2, 1, ESDHC2_MSHC2)
+CLK_SET_RATE(esdhc2, 1, ESDHC2_MSHC2)
+
+#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(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);
+
+/* 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_clk, NULL);
+DEFINE_CLOCK(pwm2_clk, 0, MXC_CCM_CCGR2, MXC_CCM_CCGRx_CG8_OFFSET,
+ NULL, NULL, &ipg_clk, NULL);
+
+/* I2C */
+DEFINE_CLOCK(i2c1_clk, 0, MXC_CCM_CCGR1, MXC_CCM_CCGRx_CG9_OFFSET,
+ NULL, NULL, &ipg_clk, NULL);
+DEFINE_CLOCK(i2c2_clk, 1, MXC_CCM_CCGR1, MXC_CCM_CCGRx_CG10_OFFSET,
+ NULL, NULL, &ipg_clk, NULL);
+DEFINE_CLOCK(hsi2c_clk, 0, MXC_CCM_CCGR1, MXC_CCM_CCGRx_CG11_OFFSET,
+ NULL, NULL, &ipg_clk, 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_MAX(esdhc2_clk, 1, MXC_CCM_CCGR3, MXC_CCM_CCGRx_CG3_OFFSET,
+ clk_esdhc2, &pll2_sw_clk, &esdhc2_ipg_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);
+
+#define _REGISTER_CLOCK(d, n, c) \
+ { \
+ .dev_id = d, \
+ .con_id = n, \
+ .clk = &c, \
+ },
+
+static struct clk_lookup mx51_lookups[] = {
+ _REGISTER_CLOCK("imx-uart.0", NULL, uart1_clk)
+ _REGISTER_CLOCK("imx-uart.1", NULL, uart2_clk)
+ _REGISTER_CLOCK("imx-uart.2", NULL, uart3_clk)
+ _REGISTER_CLOCK(NULL, "gpt", gpt_clk)
+ _REGISTER_CLOCK("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, kpp_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)
+ _REGISTER_CLOCK("imx-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)
+ _REGISTER_CLOCK("imx51-cspi.0", NULL, cspi_clk)
+ _REGISTER_CLOCK("sdhci-esdhc-imx.0", NULL, esdhc1_clk)
+ _REGISTER_CLOCK("sdhci-esdhc-imx.1", NULL, esdhc2_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)
+};
+
+static struct clk_lookup mx53_lookups[] = {
+ _REGISTER_CLOCK("imx-uart.0", NULL, uart1_clk)
+ _REGISTER_CLOCK("imx-uart.1", NULL, uart2_clk)
+ _REGISTER_CLOCK("imx-uart.2", NULL, uart3_clk)
+ _REGISTER_CLOCK(NULL, "gpt", gpt_clk)
+ _REGISTER_CLOCK("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("sdhci-esdhc-imx.0", NULL, esdhc1_clk)
+ _REGISTER_CLOCK("sdhci-esdhc-imx.1", NULL, esdhc2_clk)
+ _REGISTER_CLOCK("imx53-ecspi.0", NULL, ecspi1_clk)
+ _REGISTER_CLOCK("imx53-ecspi.1", NULL, ecspi2_clk)
+ _REGISTER_CLOCK("imx53-cspi.0", NULL, cspi_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);
+ 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_MXC_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);
+ mx53_revision();
+ clk_disable(&iim_clk);
+
+ /* System timer */
+ mxc_timer_init(&gpt_clk, MX53_IO_ADDRESS(MX53_GPT1_BASE_ADDR),
+ MX53_INT_GPT);
+ return 0;
+}
OpenPOWER on IntegriCloud