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| author | Fabio Estevam <festevam@gmail.com> | 2011-10-20 16:01:29 +0000 |
|---|---|---|
| committer | Albert ARIBAUD <albert.u.boot@aribaud.net> | 2011-11-03 22:56:18 +0100 |
| commit | 6d0fb3dbcc4b1ce8437b1e9458ad406636321ef6 (patch) | |
| tree | 8cb192312571038360dbc4b9e6083868e501803e /arch/arm/cpu/arm1136/mx31 | |
| parent | 1f83d009e4fb086c3ee210f78b2ca601fd2cd0dc (diff) | |
| download | u-boot-imx-6d0fb3dbcc4b1ce8437b1e9458ad406636321ef6.zip u-boot-imx-6d0fb3dbcc4b1ce8437b1e9458ad406636321ef6.tar.gz u-boot-imx-6d0fb3dbcc4b1ce8437b1e9458ad406636321ef6.tar.bz2 | |
mx31: Introduce mx31_set_gpr function
Introduce mx31_set_gpr function for setting the GPR (General Purpose Register) on MX31.
This function can be useful for setting a group of pins into tied to some specific peripherals.
Reuse this function from the linux kernel.
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Diffstat (limited to 'arch/arm/cpu/arm1136/mx31')
| -rw-r--r-- | arch/arm/cpu/arm1136/mx31/generic.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/arch/arm/cpu/arm1136/mx31/generic.c b/arch/arm/cpu/arm1136/mx31/generic.c index 78df7b9..4f27e25 100644 --- a/arch/arm/cpu/arm1136/mx31/generic.c +++ b/arch/arm/cpu/arm1136/mx31/generic.c @@ -27,6 +27,8 @@ #include <asm/io.h> #include <asm/arch/sys_proto.h> +#define IOMUXGPR (IOMUXC_BASE + 0x008) + static u32 mx31_decode_pll(u32 reg, u32 infreq) { u32 mfi = GET_PLL_MFI(reg); @@ -141,6 +143,19 @@ void mx31_set_pad(enum iomux_pins pin, u32 config) } +void mx31_set_gpr(enum iomux_gp_func gp, char en) +{ + u32 l; + + l = readl(IOMUXGPR); + if (en) + l |= gp; + else + l &= ~gp; + + writel(l, IOMUXGPR); +} + void mxc_setup_weimcs(int cs, const struct mxc_weimcs *weimcs) { struct mx31_weim *weim = (struct mx31_weim *) WEIM_BASE; |