[PATCH V4 2/4] ARM: imx51/53: add sdhc3/4 clock
Richard Zhu
Hong-Xing.Zhu at freescale.com
Tue Mar 1 04:58:18 EST 2011
Signed-off-by: Richard Zhao <richard.zhao at freescale.com>
---
arch/arm/mach-mx5/clock-mx51-mx53.c | 140 ++++++++++++++++++++++++++++++++++-
arch/arm/mach-mx5/crm_regs.h | 7 ++
2 files changed, 146 insertions(+), 1 deletions(-)
diff --git a/arch/arm/mach-mx5/clock-mx51-mx53.c b/arch/arm/mach-mx5/clock-mx51-mx53.c
index 8164b1d..652ace4 100644
--- a/arch/arm/mach-mx5/clock-mx51-mx53.c
+++ b/arch/arm/mach-mx5/clock-mx51-mx53.c
@@ -42,6 +42,9 @@ 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 */
@@ -1143,10 +1146,80 @@ 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, \
@@ -1251,9 +1324,62 @@ 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,
+};
+
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);
@@ -1312,6 +1438,8 @@ static struct clk_lookup mx51_lookups[] = {
_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("sdhci-esdhc-imx.2", NULL, esdhc3_clk)
+ _REGISTER_CLOCK("sdhci-esdhc-imx.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)
@@ -1332,7 +1460,9 @@ static struct clk_lookup mx53_lookups[] = {
_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("sdhci-esdhc-imx.1", NULL, esdhc2_mx53_clk)
+ _REGISTER_CLOCK("sdhci-esdhc-imx.2", NULL, esdhc3_mx53_clk)
+ _REGISTER_CLOCK("sdhci-esdhc-imx.3", NULL, esdhc4_mx53_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)
@@ -1425,6 +1555,14 @@ int __init mx53_clocks_init(unsigned long ckil, unsigned long osc,
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);
diff --git a/arch/arm/mach-mx5/crm_regs.h b/arch/arm/mach-mx5/crm_regs.h
index b462c22..87c0c58 100644
--- a/arch/arm/mach-mx5/crm_regs.h
+++ b/arch/arm/mach-mx5/crm_regs.h
@@ -217,9 +217,12 @@
#define MXC_CCM_CSCMR1_ESDHC1_MSHC1_CLK_SEL_OFFSET (20)
#define MXC_CCM_CSCMR1_ESDHC1_MSHC1_CLK_SEL_MASK (0x3 << 20)
#define MXC_CCM_CSCMR1_ESDHC3_CLK_SEL (0x1 << 19)
+#define MXC_CCM_CSCMR1_ESDHC2_MSHC2_MX53_CLK_SEL (0x1 << 19)
#define MXC_CCM_CSCMR1_ESDHC4_CLK_SEL (0x1 << 18)
#define MXC_CCM_CSCMR1_ESDHC2_MSHC2_CLK_SEL_OFFSET (16)
#define MXC_CCM_CSCMR1_ESDHC2_MSHC2_CLK_SEL_MASK (0x3 << 16)
+#define MXC_CCM_CSCMR1_ESDHC3_MX53_CLK_SEL_OFFSET (16)
+#define MXC_CCM_CSCMR1_ESDHC3_MX53_CLK_SEL_MASK (0x3 << 16)
#define MXC_CCM_CSCMR1_SSI1_CLK_SEL_OFFSET (14)
#define MXC_CCM_CSCMR1_SSI1_CLK_SEL_MASK (0x3 << 14)
#define MXC_CCM_CSCMR1_SSI2_CLK_SEL_OFFSET (12)
@@ -271,6 +274,10 @@
#define MXC_CCM_CSCDR1_ESDHC2_MSHC2_CLK_PRED_MASK (0x7 << 22)
#define MXC_CCM_CSCDR1_ESDHC2_MSHC2_CLK_PODF_OFFSET (19)
#define MXC_CCM_CSCDR1_ESDHC2_MSHC2_CLK_PODF_MASK (0x7 << 19)
+#define MXC_CCM_CSCDR1_ESDHC3_MX53_CLK_PRED_OFFSET (22)
+#define MXC_CCM_CSCDR1_ESDHC3_MX53_CLK_PRED_MASK (0x7 << 22)
+#define MXC_CCM_CSCDR1_ESDHC3_MX53_CLK_PODF_OFFSET (19)
+#define MXC_CCM_CSCDR1_ESDHC3_MX53_CLK_PODF_MASK (0x7 << 19)
#define MXC_CCM_CSCDR1_ESDHC1_MSHC1_CLK_PRED_OFFSET (16)
#define MXC_CCM_CSCDR1_ESDHC1_MSHC1_CLK_PRED_MASK (0x7 << 16)
#define MXC_CCM_CSCDR1_PGC_CLK_PODF_OFFSET (14)
--
1.7.1
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