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-rw-r--r--arch/arm/mach-mx5/clock-mx51.c871
1 files changed, 0 insertions, 871 deletions
diff --git a/arch/arm/mach-mx5/clock-mx51.c b/arch/arm/mach-mx5/clock-mx51.c
deleted file mode 100644
index d9f612d3370e..000000000000
--- a/arch/arm/mach-mx5/clock-mx51.c
+++ /dev/null
@@ -1,871 +0,0 @@
-/*
- * 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 <asm/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 lp_apm_clk;
-static struct clk periph_apm_clk;
-static struct clk ahb_clk;
-static struct clk ipg_clk;
-static struct clk usboh3_clk;
-
-#define MAX_DPLL_WAIT_TRIES 1000 /* 1000 * udelay(1) = 1ms */
-
-static int _clk_ccgr_enable(struct clk *clk)
-{
- u32 reg;
-
- reg = __raw_readl(clk->enable_reg);
- reg |= MXC_CCM_CCGRx_MOD_ON << clk->enable_shift;
- __raw_writel(reg, clk->enable_reg);
-
- return 0;
-}
-
-static void _clk_ccgr_disable(struct clk *clk)
-{
- u32 reg;
- reg = __raw_readl(clk->enable_reg);
- reg &= ~(MXC_CCM_CCGRx_MOD_OFF << clk->enable_shift);
- __raw_writel(reg, clk->enable_reg);
-
-}
-
-static void _clk_ccgr_disable_inwait(struct clk *clk)
-{
- u32 reg;
-
- reg = __raw_readl(clk->enable_reg);
- reg &= ~(MXC_CCM_CCGRx_CG_MASK << clk->enable_shift);
- reg |= MXC_CCM_CCGRx_MOD_IDLE << clk->enable_shift;
- __raw_writel(reg, clk->enable_reg);
-}
-
-/*
- * 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 *_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 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_arm_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_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);
- reg &= ~MXC_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);
- reg |= MXC_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;
-}
-
-static unsigned long clk_uart_get_rate(struct clk *clk)
-{
- u32 reg, prediv, podf;
- unsigned long parent_rate;
-
- parent_rate = clk_get_rate(clk->parent);
-
- reg = __raw_readl(MXC_CCM_CSCDR1);
- prediv = ((reg & MXC_CCM_CSCDR1_UART_CLK_PRED_MASK) >>
- MXC_CCM_CSCDR1_UART_CLK_PRED_OFFSET) + 1;
- podf = ((reg & MXC_CCM_CSCDR1_UART_CLK_PODF_MASK) >>
- MXC_CCM_CSCDR1_UART_CLK_PODF_OFFSET) + 1;
-
- return parent_rate / (prediv * podf);
-}
-
-static int _clk_uart_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_CSCMR1) & ~MXC_CCM_CSCMR1_UART_CLK_SEL_MASK;
- reg |= mux << MXC_CCM_CSCMR1_UART_CLK_SEL_OFFSET;
- __raw_writel(reg, MXC_CCM_CSCMR1);
-
- return 0;
-}
-
-static unsigned long clk_usboh3_get_rate(struct clk *clk)
-{
- u32 reg, prediv, podf;
- unsigned long parent_rate;
-
- parent_rate = clk_get_rate(clk->parent);
-
- reg = __raw_readl(MXC_CCM_CSCDR1);
- prediv = ((reg & MXC_CCM_CSCDR1_USBOH3_CLK_PRED_MASK) >>
- MXC_CCM_CSCDR1_USBOH3_CLK_PRED_OFFSET) + 1;
- podf = ((reg & MXC_CCM_CSCDR1_USBOH3_CLK_PODF_MASK) >>
- MXC_CCM_CSCDR1_USBOH3_CLK_PODF_OFFSET) + 1;
-
- return parent_rate / (prediv * podf);
-}
-
-static int _clk_usboh3_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_CSCMR1) & ~MXC_CCM_CSCMR1_USBOH3_CLK_SEL_MASK;
- reg |= mux << MXC_CCM_CSCMR1_USBOH3_CLK_SEL_OFFSET;
- __raw_writel(reg, MXC_CCM_CSCMR1);
-
- 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;
-}
-
-/* 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,
-};
-
-/* 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_arm_get_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,
-};
-
-/* 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 uart_root_clk = {
- .parent = &pll2_sw_clk,
- .get_rate = clk_uart_get_rate,
- .set_parent = _clk_uart_set_parent,
-};
-
-static struct clk usboh3_clk = {
- .parent = &pll2_sw_clk,
- .get_rate = clk_usboh3_get_rate,
- .set_parent = _clk_usboh3_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,
-};
-
-#define DEFINE_CLOCK(name, i, er, es, gr, sr, p, s) \
- static struct clk name = { \
- .id = i, \
- .enable_reg = er, \
- .enable_shift = es, \
- .get_rate = gr, \
- .set_rate = sr, \
- .enable = _clk_ccgr_enable, \
- .disable = _clk_ccgr_disable, \
- .parent = p, \
- .secondary = s, \
- }
-
-/* DEFINE_CLOCK(name, id, enable_reg, enable_shift,
- get_rate, set_rate, parent, secondary); */
-
-/* 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_clk, 0, MXC_CCM_CCGR1, MXC_CCM_CCGRx_CG4_OFFSET,
- NULL, NULL, &uart_root_clk, NULL);
-DEFINE_CLOCK(uart2_clk, 1, MXC_CCM_CCGR1, MXC_CCM_CCGRx_CG6_OFFSET,
- NULL, NULL, &uart_root_clk, NULL);
-DEFINE_CLOCK(uart3_clk, 2, MXC_CCM_CCGR1, MXC_CCM_CCGRx_CG8_OFFSET,
- NULL, NULL, &uart_root_clk, NULL);
-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);
-
-/* GPT */
-DEFINE_CLOCK(gpt_clk, 0, MXC_CCM_CCGR2, MXC_CCM_CCGRx_CG9_OFFSET,
- NULL, NULL, &ipg_clk, NULL);
-DEFINE_CLOCK(gpt_ipg_clk, 0, MXC_CCM_CCGR2, MXC_CCM_CCGRx_CG10_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);
-
-#define _REGISTER_CLOCK(d, n, c) \
- { \
- .dev_id = d, \
- .con_id = n, \
- .clk = &c, \
- },
-
-static struct clk_lookup 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-ehci.0", "usb", usboh3_clk)
- _REGISTER_CLOCK("mxc-ehci.0", "usb_ahb", ahb_clk)
- _REGISTER_CLOCK("mxc-ehci.1", "usb", usboh3_clk)
- _REGISTER_CLOCK("mxc-ehci.1", "usb_ahb", ahb_clk)
- _REGISTER_CLOCK("fsl-usb2-udc", "usb", usboh3_clk)
- _REGISTER_CLOCK("fsl-usb2-udc", "usb_ahb", ahb_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(lookups); i++)
- clkdev_add(&lookups[i]);
-
- clk_tree_init();
-
- clk_enable(&cpu_clk);
- clk_enable(&main_bus_clk);
-
- /* set the usboh3_clk parent to pll2_sw_clk */
- clk_set_parent(&usboh3_clk, &pll2_sw_clk);
-
- /* System timer */
- mxc_timer_init(&gpt_clk, MX51_IO_ADDRESS(MX51_GPT1_BASE_ADDR),
- MX51_MXC_INT_GPT);
- return 0;
-}
generated by cgit v1.2.3 (git 2.0.4) at 2024-04-27 03:01:51 +0000