diff options
| author | Lukasz Majewski <lukma@denx.de> | 2019-02-13 22:46:41 +0100 |
|---|---|---|
| committer | Stefano Babic <sbabic@denx.de> | 2019-04-13 20:30:08 +0200 |
| commit | 7db8b854d3f76d996c9adcd8a6a4ecd3ec30ebda (patch) | |
| tree | 7fb069e8fa2f0e53e6677ed5adc9167e9e3ae901 /arch/arm | |
| parent | da6b81a8d8d9a1cac6c2a2744f5afe0a25b6bb1e (diff) | |
vybrid: clock: Provide enable_i2c_clk() function for Vybrid
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>
Diffstat (limited to 'arch/arm')
| -rw-r--r-- | arch/arm/cpu/armv7/vf610/generic.c | 22 | ||||
| -rw-r--r-- | arch/arm/include/asm/arch-vf610/clock.h | 3 |
2 files changed, 25 insertions, 0 deletions
diff --git a/arch/arm/cpu/armv7/vf610/generic.c b/arch/arm/cpu/armv7/vf610/generic.c index cbd3391918..e0c0b1bcb0 100644 --- a/arch/arm/cpu/armv7/vf610/generic.c +++ b/arch/arm/cpu/armv7/vf610/generic.c @@ -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 diff --git a/arch/arm/include/asm/arch-vf610/clock.h b/arch/arm/include/asm/arch-vf610/clock.h index 3bd73a01f3..72184fd608 100644 --- a/arch/arm/include/asm/arch-vf610/clock.h +++ b/arch/arm/include/asm/arch-vf610/clock.h @@ -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) |