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vybrid: clock: Provide enable_i2c_clk() function for Vybrid

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Provide function to enable I2C clocks for vf610 - in the generic code.
This function overrides the default weak function implementation (which
only returns 1).

Signed-off-by: Lukasz Majewski <lukma@denx.de>
Tested-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
This commit is contained in:
Lukasz Majewski 2019-02-13 22:46:41 +01:00 committed by Stefano Babic
parent da6b81a8d8
commit 7db8b854d3
2 changed files with 25 additions and 0 deletions
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22
arch/arm/cpu/armv7/vf610/generic.c
View File

@ -375,3 +375,25 @@ void enable_caches(void)
mmu_set_region_dcache_behaviour(IRAM_BASE_ADDR, IRAM_SIZE, option);
}
#endif
#ifdef CONFIG_SYS_I2C_MXC
/* i2c_num can be from 0 - 3 */
int enable_i2c_clk(unsigned char enable, unsigned int i2c_num)
{
struct ccm_reg *ccm = (struct ccm_reg *)CCM_BASE_ADDR;
switch (i2c_num) {
case 0:
clrsetbits_le32(&ccm->ccgr4, CCM_CCGR4_I2C0_CTRL_MASK,
CCM_CCGR4_I2C0_CTRL_MASK);
case 2:
clrsetbits_le32(&ccm->ccgr10, CCM_CCGR10_I2C2_CTRL_MASK,
CCM_CCGR10_I2C2_CTRL_MASK);
break;
default:
return -EINVAL;
}
return 0;
}
#endif

3
arch/arm/include/asm/arch-vf610/clock.h
View File

@ -22,6 +22,9 @@ enum mxc_clock {
void enable_ocotp_clk(unsigned char enable);
unsigned int mxc_get_clock(enum mxc_clock clk);
u32 get_lpuart_clk(void);
#ifdef CONFIG_SYS_I2C_MXC
int enable_i2c_clk(unsigned char enable, unsigned int i2c_num);
#endif
#define imx_get_fecclk() mxc_get_clock(MXC_FEC_CLK)