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imx: mx6: ccm: Change the clock settings for i.MX6QP

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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: Peng Fan <Peng.Fan@freescale.com>
Signed-off-by: Ye.Li <B37916@freescale.com>
Reviewed-by: Fabio Estevam <fabio.estevam@freescale.com>
Acked-by: Stefano Babic <sbabic@denx.de>
master
Peng Fan 10 years ago committed by Stefano Babic
parent d0acd99334
commit e1c2d68b39
3 changed files with 49 additions and 34 deletions
  1. 30
      arch/arm/cpu/armv7/mx6/clock.c
  2. 5
      arch/arm/cpu/armv7/mx6/soc.c
  3. 48
      arch/arm/include/asm/arch-mx6/crm_regs.h

30
arch/arm/cpu/armv7/mx6/clock.c
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@ -310,10 +310,12 @@ 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);
@ -324,10 +326,13 @@ 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;
@ -339,8 +344,13 @@ 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));
}

5
arch/arm/cpu/armv7/mx6/soc.c
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@ -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)

48
arch/arm/include/asm/arch-mx6/crm_regs.h
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@ -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

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