From: Fabio Estevam fabio.estevam@freescale.com
On mx6sl there is a LVE (Low Voltage Enable) in the IOMUXC_SW_PAD_CTL register.
LVE is bit 22 of IOMUXC_SW_PAD_CTL register, but in order to make the calculation easier we can define it as bit 17 as this bit is unused and fits the current MUX_PAD_CTRL_MASK mask.
Add support for it.
Signed-off-by: Fabio Estevam fabio.estevam@freescale.com --- arch/arm/imx-common/iomux-v3.c | 8 ++++++++ arch/arm/include/asm/imx-common/iomux-v3.h | 2 ++ 2 files changed, 10 insertions(+)
diff --git a/arch/arm/imx-common/iomux-v3.c b/arch/arm/imx-common/iomux-v3.c index b59b802..6e46ea8 100644 --- a/arch/arm/imx-common/iomux-v3.c +++ b/arch/arm/imx-common/iomux-v3.c @@ -30,6 +30,14 @@ void imx_iomux_v3_setup_pad(iomux_v3_cfg_t pad) (pad & MUX_PAD_CTRL_OFS_MASK) >> MUX_PAD_CTRL_OFS_SHIFT; u32 pad_ctrl = (pad & MUX_PAD_CTRL_MASK) >> MUX_PAD_CTRL_SHIFT;
+#if defined CONFIG_MX6SL + /* Check whether LVE bit needs to be set */ + if (pad_ctrl & PAD_CTL_LVE) { + pad_ctrl &= ~PAD_CTL_LVE; + pad_ctrl |= PAD_CTL_LVE_BIT; + } +#endif + if (mux_ctrl_ofs) __raw_writel(mux_mode, base + mux_ctrl_ofs);
diff --git a/arch/arm/include/asm/imx-common/iomux-v3.h b/arch/arm/include/asm/imx-common/iomux-v3.h index dec11a1..6d3561f 100644 --- a/arch/arm/include/asm/imx-common/iomux-v3.h +++ b/arch/arm/include/asm/imx-common/iomux-v3.h @@ -88,6 +88,8 @@ typedef u64 iomux_v3_cfg_t; #ifdef CONFIG_MX6
#define PAD_CTL_HYS (1 << 16) +#define PAD_CTL_LVE (1 << 17) +#define PAD_CTL_LVE_BIT (1 << 22)
#define PAD_CTL_PUS_100K_DOWN (0 << 14 | PAD_CTL_PUE) #define PAD_CTL_PUS_47K_UP (1 << 14 | PAD_CTL_PUE)