diff options
| author | Peng Fan <Peng.Fan@freescale.com> | 2015-05-05 14:34:11 +0800 |
|---|---|---|
| committer | Max Krummenacher <max.krummenacher@toradex.com> | 2016-03-09 14:42:29 +0100 |
| commit | 04b43082370d6548ba159724dc1cc6cece8b2c85 (patch) | |
| tree | 713af75f60e8d74f9cb0ff0ad473b5b7a15550e7 /arch | |
| parent | 59299b30b670acca74b0a1c3a0889b4fe54617fa (diff) | |
MLK-10812-1 imx:mx6 add i2c4 support
I2C4 support for i.MX
Signed-off-by: Peng Fan <Peng.Fan@freescale.com>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/cpu/armv7/mx6/clock.c | 29 |
1 files changed, 23 insertions, 6 deletions
diff --git a/arch/arm/cpu/armv7/mx6/clock.c b/arch/arm/cpu/armv7/mx6/clock.c index abac65d1cca..e6a2115d279 100644 --- a/arch/arm/cpu/armv7/mx6/clock.c +++ b/arch/arm/cpu/armv7/mx6/clock.c @@ -1,5 +1,5 @@ /* - * Copyright (C) 2010-2011 Freescale Semiconductor, Inc. + * Copyright (C) 2010-2015 Freescale Semiconductor, Inc. * * SPDX-License-Identifier: GPL-2.0+ */ @@ -159,17 +159,34 @@ int enable_i2c_clk(unsigned char enable, unsigned i2c_num) u32 reg; u32 mask; - if (i2c_num > 2) +#if defined(CONFIG_MX6SX) || defined(CONFIG_MX6UL) + if (i2c_num > 3) return -EINVAL; + if (i2c_num == 3) { + mask = MXC_CCM_CCGR6_I2C4_SERIAL_MASK; + reg = __raw_readl(&imx_ccm->CCGR6); + } else +#endif + { + if (i2c_num > 2) + return -EINVAL; - mask = MXC_CCM_CCGR_CG_MASK - << (MXC_CCM_CCGR2_I2C1_SERIAL_OFFSET + (i2c_num << 1)); - reg = __raw_readl(&imx_ccm->CCGR2); + 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 defined(CONFIG_MX6SX) || defined(CONFIG_MX6UL) + if (i2c_num == 3) + __raw_writel(reg, &imx_ccm->CCGR6); + else +#endif + __raw_writel(reg, &imx_ccm->CCGR2); + return 0; } #endif |