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imx: mx6 add i2c4 clock support for i.MX6SX

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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>
This commit is contained in:
Peng Fan 2015-07-01 17:01:50 +08:00 committed by Stefano Babic
parent 2d59acc70f
commit 19c6ec70c5
2 changed files with 12 additions and 7 deletions
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14
arch/arm/cpu/armv7/mx6/clock.c
View file

@ -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;
}

5
arch/arm/include/asm/arch-mx6/crm_regs.h
View file

@ -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