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| author | Heiko Schocher <hs@denx.de> | 2015-05-18 10:56:24 +0200 |
|---|---|---|
| committer | Stefano Babic <sbabic@denx.de> | 2015-05-26 14:16:54 +0200 |
| commit | 21a26940f9048e668f9a79f64b802406b2e8d18c (patch) | |
| tree | 69ad60b6af602381609ecfc3760755757031dc20 /arch/arm/cpu | |
| parent | ab87fc6bbd80f4e702e7dde102b1c74f0f4678b3 (diff) | |
| download | u-boot-imx-21a26940f9048e668f9a79f64b802406b2e8d18c.zip u-boot-imx-21a26940f9048e668f9a79f64b802406b2e8d18c.tar.gz u-boot-imx-21a26940f9048e668f9a79f64b802406b2e8d18c.tar.bz2 | |
arm, imx6, i2c: add I2C4 for MX6DL
add I2C4 modul for MX6DL based boards.
Signed-off-by: Heiko Schocher <hs@denx.de>
Diffstat (limited to 'arch/arm/cpu')
| -rw-r--r-- | arch/arm/cpu/armv7/mx6/clock.c | 33 |
1 files changed, 22 insertions, 11 deletions
diff --git a/arch/arm/cpu/armv7/mx6/clock.c b/arch/arm/cpu/armv7/mx6/clock.c index 055f44e..ae99945 100644 --- a/arch/arm/cpu/armv7/mx6/clock.c +++ b/arch/arm/cpu/armv7/mx6/clock.c @@ -140,23 +140,34 @@ int enable_usdhc_clk(unsigned char enable, unsigned bus_num) #endif #ifdef CONFIG_SYS_I2C_MXC -/* i2c_num can be from 0 - 2 */ +/* i2c_num can be from 0 - 3 */ int enable_i2c_clk(unsigned char enable, unsigned i2c_num) { u32 reg; u32 mask; - if (i2c_num > 2) + if (i2c_num > 3) return -EINVAL; - - mask = MXC_CCM_CCGR_CG_MASK - << (MXC_CCM_CCGR2_I2C1_SERIAL_OFFSET + (i2c_num << 1)); - reg = __raw_readl(&imx_ccm->CCGR2); - if (enable) - reg |= mask; - else - reg &= ~mask; - __raw_writel(reg, &imx_ccm->CCGR2); + if (i2c_num < 3) { + mask = MXC_CCM_CCGR_CG_MASK + << (MXC_CCM_CCGR2_I2C1_SERIAL_OFFSET + + (i2c_num << 1)); + reg = __raw_readl(&imx_ccm->CCGR2); + if (enable) + reg |= mask; + else + 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 (enable) + reg |= mask; + else + reg &= ~mask; + __raw_writel(reg, &imx_ccm->CCGR1); + } return 0; } #endif |