[U-Boot] [PATCH V4 2/6] imx: mx6: ccm: Change the clock settings for i.MX6QP
Peng Fan
Peng.Fan at freescale.com
Tue Jun 30 04:36:12 CEST 2015
Since i.MX6QP changes some CCM registers, so modify the clocks settings to
follow the hardware changes.
In c files, use runtime check and discard #ifdef.
Signed-off-by: Ye.Li <B37916 at freescale.com>
Signed-off-by: Peng Fan <Peng.Fan at freescale.com>
Reviewed-by: Fabio Estevam <fabio.estevam at freescale.com>
---
Changes v4:
Add Fabio's Reviewed-by
Changes v3:
Move bit definition to crm_regs.h.
Changes v2:
1. Remove #ifdef, but use runtime check
2. A few bit definitions are introduced in c files, because to other platforms
the macro will make compilation fail, also there are no other places refer
the bit macro definitions.
arch/arm/cpu/armv7/mx6/clock.c | 30 +++++++++++++-------
arch/arm/cpu/armv7/mx6/soc.c | 5 +++-
arch/arm/include/asm/arch-mx6/crm_regs.h | 48 +++++++++++++++++---------------
3 files changed, 49 insertions(+), 34 deletions(-)
diff --git a/arch/arm/cpu/armv7/mx6/clock.c b/arch/arm/cpu/armv7/mx6/clock.c
index ae99945..446fe84 100644
--- a/arch/arm/cpu/armv7/mx6/clock.c
+++ b/arch/arm/cpu/armv7/mx6/clock.c
@@ -323,10 +323,12 @@ static u32 get_ipg_per_clk(void)
u32 reg, perclk_podf;
reg = __raw_readl(&imx_ccm->cscmr1);
-#if (defined(CONFIG_MX6SL) || defined(CONFIG_MX6SX))
- if (reg & MXC_CCM_CSCMR1_PER_CLK_SEL_MASK)
- return MXC_HCLK; /* OSC 24Mhz */
-#endif
+ if (is_cpu_type(MXC_CPU_MX6SL) || is_cpu_type(MXC_CPU_MX6SX) ||
+ is_mx6dqp()) {
+ if (reg & MXC_CCM_CSCMR1_PER_CLK_SEL_MASK)
+ return MXC_HCLK; /* OSC 24Mhz */
+ }
+
perclk_podf = reg & MXC_CCM_CSCMR1_PERCLK_PODF_MASK;
return get_ipg_clk() / (perclk_podf + 1);
@@ -337,10 +339,13 @@ static u32 get_uart_clk(void)
u32 reg, uart_podf;
u32 freq = decode_pll(PLL_USBOTG, MXC_HCLK) / 6; /* static divider */
reg = __raw_readl(&imx_ccm->cscdr1);
-#if (defined(CONFIG_MX6SL) || defined(CONFIG_MX6SX))
- if (reg & MXC_CCM_CSCDR1_UART_CLK_SEL)
- freq = MXC_HCLK;
-#endif
+
+ if (is_cpu_type(MXC_CPU_MX6SL) || is_cpu_type(MXC_CPU_MX6SX) ||
+ is_mx6dqp()) {
+ if (reg & MXC_CCM_CSCDR1_UART_CLK_SEL)
+ freq = MXC_HCLK;
+ }
+
reg &= MXC_CCM_CSCDR1_UART_CLK_PODF_MASK;
uart_podf = reg >> MXC_CCM_CSCDR1_UART_CLK_PODF_OFFSET;
@@ -352,8 +357,13 @@ static u32 get_cspi_clk(void)
u32 reg, cspi_podf;
reg = __raw_readl(&imx_ccm->cscdr2);
- reg &= MXC_CCM_CSCDR2_ECSPI_CLK_PODF_MASK;
- cspi_podf = reg >> MXC_CCM_CSCDR2_ECSPI_CLK_PODF_OFFSET;
+ cspi_podf = (reg & MXC_CCM_CSCDR2_ECSPI_CLK_PODF_MASK) >>
+ MXC_CCM_CSCDR2_ECSPI_CLK_PODF_OFFSET;
+
+ if (is_mx6dqp()) {
+ if (reg & MXC_CCM_CSCDR2_ECSPI_CLK_SEL_MASK)
+ return MXC_HCLK / (cspi_podf + 1);
+ }
return decode_pll(PLL_USBOTG, MXC_HCLK) / (8 * (cspi_podf + 1));
}
diff --git a/arch/arm/cpu/armv7/mx6/soc.c b/arch/arm/cpu/armv7/mx6/soc.c
index d3a3b2e..e80c09c 100644
--- a/arch/arm/cpu/armv7/mx6/soc.c
+++ b/arch/arm/cpu/armv7/mx6/soc.c
@@ -342,9 +342,12 @@ static void set_ahb_rate(u32 val)
static void clear_mmdc_ch_mask(void)
{
struct mxc_ccm_reg *mxc_ccm = (struct mxc_ccm_reg *)CCM_BASE_ADDR;
+ u32 reg;
+ reg = readl(&mxc_ccm->ccdr);
/* Clear MMDC channel mask */
- writel(0, &mxc_ccm->ccdr);
+ reg &= ~(MXC_CCM_CCDR_MMDC_CH1_HS_MASK | MXC_CCM_CCDR_MMDC_CH0_HS_MASK);
+ writel(reg, &mxc_ccm->ccdr);
}
static void init_bandgap(void)
diff --git a/arch/arm/include/asm/arch-mx6/crm_regs.h b/arch/arm/include/asm/arch-mx6/crm_regs.h
index 887d048..5bbf6e0 100644
--- a/arch/arm/include/asm/arch-mx6/crm_regs.h
+++ b/arch/arm/include/asm/arch-mx6/crm_regs.h
@@ -123,6 +123,8 @@ struct mxc_ccm_reg {
/* Define the bits in register CCDR */
#define MXC_CCM_CCDR_MMDC_CH1_HS_MASK (1 << 16)
#define MXC_CCM_CCDR_MMDC_CH0_HS_MASK (1 << 17)
+/* Exists on i.MX6QP */
+#define MXC_CCM_CCDR_MMDC_CH1_AXI_ROOT_CG (1 << 18)
/* Define the bits in register CSR */
#define MXC_CCM_CSR_COSC_READY (1 << 5)
@@ -195,10 +197,8 @@ struct mxc_ccm_reg {
#define MXC_CCM_CBCMR_GPU3D_SHADER_CLK_SEL_OFFSET 8
#define MXC_CCM_CBCMR_GPU3D_CORE_CLK_SEL_MASK (0x3 << 4)
#define MXC_CCM_CBCMR_GPU3D_CORE_CLK_SEL_OFFSET 4
-#ifndef CONFIG_MX6SX
-#define MXC_CCM_CBCMR_GPU3D_AXI_CLK_SEL (1 << 1)
-#define MXC_CCM_CBCMR_GPU2D_AXI_CLK_SEL (1 << 0)
-#endif
+/* Exists on i.MX6QP */
+#define MXC_CCM_CBCMR_PRE_CLK_SEL (1 << 1)
/* Define the bits in register CSCMR1 */
#define MXC_CCM_CSCMR1_ACLK_EMI_SLOW_MASK (0x3 << 29)
@@ -229,10 +229,10 @@ struct mxc_ccm_reg {
#define MXC_CCM_CSCMR1_QSPI1_CLK_SEL_MASK (0x7 << 7)
#define MXC_CCM_CSCMR1_QSPI1_CLK_SEL_OFFSET 7
#endif
-#if (defined(CONFIG_MX6SL) || defined(CONFIG_MX6SX))
-#define MXC_CCM_CSCMR1_PER_CLK_SEL_MASK (1 << 6)
+/* CSCMR1_PER_CLK exists on i.MX6SX/SL/QP */
+#define MXC_CCM_CSCMR1_PER_CLK_SEL_MASK (1 << 6)
#define MXC_CCM_CSCMR1_PER_CLK_SEL_OFFSET 6
-#endif
+
#define MXC_CCM_CSCMR1_PERCLK_PODF_MASK 0x3F
/* Define the bits in register CSCMR2 */
@@ -244,15 +244,12 @@ struct mxc_ccm_reg {
#define MXC_CCM_CSCMR2_ESAI_PRE_SEL_OFFSET 19
#define MXC_CCM_CSCMR2_LDB_DI1_IPU_DIV (1 << 11)
#define MXC_CCM_CSCMR2_LDB_DI0_IPU_DIV (1 << 10)
-#ifdef CONFIG_MX6SX
+/* CSCMR1_CAN_CLK exists on i.MX6SX/QP */
#define MXC_CCM_CSCMR2_CAN_CLK_SEL_MASK (0x3 << 8)
#define MXC_CCM_CSCMR2_CAN_CLK_SEL_OFFSET 8
+
#define MXC_CCM_CSCMR2_CAN_CLK_PODF_MASK (0x3F << 2)
#define MXC_CCM_CSCMR2_CAN_CLK_PODF_OFFSET 2
-#else
-#define MXC_CCM_CSCMR2_CAN_CLK_SEL_MASK (0x3F << 2)
-#define MXC_CCM_CSCMR2_CAN_CLK_SEL_OFFSET 2
-#endif
/* Define the bits in register CSCDR1 */
#ifndef CONFIG_MX6SX
@@ -273,16 +270,10 @@ struct mxc_ccm_reg {
#define MXC_CCM_CSCDR1_USBOH3_CLK_PODF_OFFSET 6
#define MXC_CCM_CSCDR1_USBOH3_CLK_PODF_MASK (0x3 << 6)
#endif
-#ifdef CONFIG_MX6SL
-#define MXC_CCM_CSCDR1_UART_CLK_PODF_MASK 0x1F
-#define MXC_CCM_CSCDR1_UART_CLK_SEL (1 << 6)
-#else
#define MXC_CCM_CSCDR1_UART_CLK_PODF_MASK 0x3F
-#ifdef CONFIG_MX6SX
-#define MXC_CCM_CSCDR1_UART_CLK_SEL (1 << 6)
-#endif
-#endif
#define MXC_CCM_CSCDR1_UART_CLK_PODF_OFFSET 0
+/* UART_CLK_SEL exists on i.MX6SL/SX/QP */
+#define MXC_CCM_CSCDR1_UART_CLK_SEL (1 << 6)
/* Define the bits in register CS1CDR */
#define MXC_CCM_CS1CDR_ESAI_CLK_PODF_MASK (0x3F << 25)
@@ -316,9 +307,14 @@ struct mxc_ccm_reg {
#define MXC_CCM_CS2CDR_ENFC_CLK_PRED_MASK (0x7 << 18)
#define MXC_CCM_CS2CDR_ENFC_CLK_PRED_OFFSET 18
#define MXC_CCM_CS2CDR_ENFC_CLK_PRED(v) (((v) & 0x7) << 18)
-#define MXC_CCM_CS2CDR_ENFC_CLK_SEL_MASK (0x3 << 16)
-#define MXC_CCM_CS2CDR_ENFC_CLK_SEL_OFFSET 16
-#define MXC_CCM_CS2CDR_ENFC_CLK_SEL(v) (((v) & 0x3) << 16)
+
+#define MXC_CCM_CS2CDR_ENFC_CLK_SEL_MASK \
+ (is_mx6dqp() ? (0x7 << 15) : (0x3 << 16))
+#define MXC_CCM_CS2CDR_ENFC_CLK_SEL_OFFSET \
+ (is_mx6dqp() ? 15 : 16)
+#define MXC_CCM_CS2CDR_ENFC_CLK_SEL(v) \
+ (is_mx6dqp() ? (((v) & 0x7) << 15) : (((v) & 0x3) << 16))
+
#endif
#define MXC_CCM_CS2CDR_LDB_DI1_CLK_SEL_MASK (0x7 << 12)
#define MXC_CCM_CS2CDR_LDB_DI1_CLK_SEL_OFFSET 12
@@ -384,6 +380,9 @@ struct mxc_ccm_reg {
/* Define the bits in register CSCDR2 */
#define MXC_CCM_CSCDR2_ECSPI_CLK_PODF_MASK (0x3F << 19)
#define MXC_CCM_CSCDR2_ECSPI_CLK_PODF_OFFSET 19
+/* ECSPI_CLK_SEL exists on i.MX6SX/SL/QP */
+#define MXC_CCM_CSCDR2_ECSPI_CLK_SEL_MASK (0x1 << 18)
+
/* All IPU2_DI1 are LCDIF1 on MX6SX */
#define MXC_CCM_CHSCCDR_IPU2_DI1_PRE_CLK_SEL_MASK (0x7 << 15)
#define MXC_CCM_CHSCCDR_IPU2_DI1_PRE_CLK_SEL_OFFSET 15
@@ -728,6 +727,9 @@ struct mxc_ccm_reg {
#define MXC_CCM_CCGR5_SAI2_MASK (3 << MXC_CCM_CCGR5_SAI2_OFFSET)
#endif
+/* PRG_CLK0 exists on i.MX6QP */
+#define MXC_CCM_CCGR6_PRG_CLK0_MASK (3 << 24)
+
#define MXC_CCM_CCGR6_USBOH3_OFFSET 0
#define MXC_CCM_CCGR6_USBOH3_MASK (3 << MXC_CCM_CCGR6_USBOH3_OFFSET)
#define MXC_CCM_CCGR6_USDHC1_OFFSET 2
--
1.8.4
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