Provide function to enable I2C2 clock for vf610 (BK4) - in the generic code.
Signed-off-by: Lukasz Majewski lukma@denx.de ---
arch/arm/cpu/armv7/vf610/generic.c | 19 +++++++++++++++++++ arch/arm/include/asm/arch-vf610/clock.h | 3 +++ board/phytec/pcm052/pcm052.c | 2 +- 3 files changed, 23 insertions(+), 1 deletion(-)
diff --git a/arch/arm/cpu/armv7/vf610/generic.c b/arch/arm/cpu/armv7/vf610/generic.c index cbd3391918..f1e6c7816e 100644 --- a/arch/arm/cpu/armv7/vf610/generic.c +++ b/arch/arm/cpu/armv7/vf610/generic.c @@ -375,3 +375,22 @@ 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 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)
diff --git a/board/phytec/pcm052/pcm052.c b/board/phytec/pcm052/pcm052.c index f988af2abc..cfc8009102 100644 --- a/board/phytec/pcm052/pcm052.c +++ b/board/phytec/pcm052/pcm052.c @@ -485,7 +485,7 @@ static void clock_init(void) clrsetbits_le32(&ccm->ccgr9, CCM_REG_CTRL_MASK, CCM_CCGR9_FEC0_CTRL_MASK | CCM_CCGR9_FEC1_CTRL_MASK); clrsetbits_le32(&ccm->ccgr10, CCM_REG_CTRL_MASK, - CCM_CCGR10_NFC_CTRL_MASK | CCM_CCGR10_I2C2_CTRL_MASK); + CCM_CCGR10_NFC_CTRL_MASK);
clrsetbits_le32(&anadig->pll2_ctrl, ANADIG_PLL2_CTRL_POWERDOWN, ANADIG_PLL2_CTRL_ENABLE | ANADIG_PLL2_CTRL_DIV_SELECT);