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| author | Peng Fan <Peng.Fan@freescale.com> | 2015-07-01 17:01:50 +0800 |
|---|---|---|
| committer | Stefano Babic <sbabic@denx.de> | 2015-07-10 09:36:16 +0200 |
| commit | 19c6ec70c59da076f0e516841caa7d9c14f501b4 (patch) | |
| tree | 61ad0540e021f602870359a58b6050cf386c8b82 /arch | |
| parent | 2d59acc70f76e6d52cc9a226c55539c9353a23cb (diff) | |
| download | talos-obmc-uboot-19c6ec70c59da076f0e516841caa7d9c14f501b4.tar.gz talos-obmc-uboot-19c6ec70c59da076f0e516841caa7d9c14f501b4.zip | |
imx: mx6 add i2c4 clock support for i.MX6SX
Add I2C4 clock support for i.MX6SX. Since we use runtime check,
but not macro, we need to remove `#ifdef ..` in crm_regs.h, or
gcc will fail to compile the code succesfully.
Making the macros only for i.MX6SX open to other i.MX6x maybe not
a good choice, but we have runtime check.
Signed-off-by: Peng Fan <Peng.Fan@freescale.com>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/cpu/armv7/mx6/clock.c | 14 | ||||
| -rw-r--r-- | arch/arm/include/asm/arch-mx6/crm_regs.h | 5 |
2 files changed, 12 insertions, 7 deletions
diff --git a/arch/arm/cpu/armv7/mx6/clock.c b/arch/arm/cpu/armv7/mx6/clock.c index 1134770286..b4618989d9 100644 --- a/arch/arm/cpu/armv7/mx6/clock.c +++ b/arch/arm/cpu/armv7/mx6/clock.c @@ -126,6 +126,7 @@ int enable_i2c_clk(unsigned char enable, unsigned i2c_num) { u32 reg; u32 mask; + u32 *addr; if (i2c_num > 3) return -EINVAL; @@ -140,14 +141,19 @@ int enable_i2c_clk(unsigned char enable, unsigned i2c_num) reg &= ~mask; __raw_writel(reg, &imx_ccm->CCGR2); } else { - mask = MXC_CCM_CCGR_CG_MASK - << (MXC_CCM_CCGR1_I2C4_SERIAL_OFFSET); - reg = __raw_readl(&imx_ccm->CCGR1); + if (is_cpu_type(MXC_CPU_MX6SX)) { + mask = MXC_CCM_CCGR6_I2C4_MASK; + addr = &imx_ccm->CCGR6; + } else { + mask = MXC_CCM_CCGR1_I2C4_SERIAL_MASK; + addr = &imx_ccm->CCGR1; + } + reg = __raw_readl(addr); if (enable) reg |= mask; else reg &= ~mask; - __raw_writel(reg, &imx_ccm->CCGR1); + __raw_writel(reg, addr); } return 0; } diff --git a/arch/arm/include/asm/arch-mx6/crm_regs.h b/arch/arm/include/asm/arch-mx6/crm_regs.h index 887d04850f..98415ace02 100644 --- a/arch/arm/include/asm/arch-mx6/crm_regs.h +++ b/arch/arm/include/asm/arch-mx6/crm_regs.h @@ -740,7 +740,7 @@ struct mxc_ccm_reg { #define MXC_CCM_CCGR6_USDHC4_MASK (3 << MXC_CCM_CCGR6_USDHC4_OFFSET) #define MXC_CCM_CCGR6_EMI_SLOW_OFFSET 10 #define MXC_CCM_CCGR6_EMI_SLOW_MASK (3 << MXC_CCM_CCGR6_EMI_SLOW_OFFSET) -#ifdef CONFIG_MX6SX +/* The following *CCGR6* exist only i.MX6SX */ #define MXC_CCM_CCGR6_PWM8_OFFSET 16 #define MXC_CCM_CCGR6_PWM8_MASK (3 << MXC_CCM_CCGR6_PWM8_OFFSET) #define MXC_CCM_CCGR6_VADC_OFFSET 20 @@ -755,10 +755,9 @@ struct mxc_ccm_reg { #define MXC_CCM_CCGR6_PWM6_MASK (3 << MXC_CCM_CCGR6_PWM6_OFFSET) #define MXC_CCM_CCGR6_PWM7_OFFSET 30 #define MXC_CCM_CCGR6_PWM7_MASK (3 << MXC_CCM_CCGR6_PWM7_OFFSET) -#else +/* The two does not exist on i.MX6SX */ #define MXC_CCM_CCGR6_VDOAXICLK_OFFSET 12 #define MXC_CCM_CCGR6_VDOAXICLK_MASK (3 << MXC_CCM_CCGR6_VDOAXICLK_OFFSET) -#endif #define BM_ANADIG_PLL_SYS_LOCK 0x80000000 #define BP_ANADIG_PLL_SYS_RSVD0 20 |
