From f799b03f37743a36d53d751b3b2327c226c9e978 Mon Sep 17 00:00:00 2001 From: Stephen Warren Date: Wed, 18 Feb 2015 13:27:03 -0700 Subject: ARM: tegra: add function to clear pinmux CLAMPING bit This is needed to correctly apply the new Jetson TK1 pinmux config. Signed-off-by: Stephen Warren Reviewed-by: Simon Glass Signed-off-by: Tom Warren --- arch/arm/include/asm/arch-tegra/pinmux.h | 3 ++- arch/arm/mach-tegra/pinmux-common.c | 12 ++++++++---- 2 files changed, 10 insertions(+), 5 deletions(-) diff --git a/arch/arm/include/asm/arch-tegra/pinmux.h b/arch/arm/include/asm/arch-tegra/pinmux.h index da477697bf..ab764960fa 100644 --- a/arch/arm/include/asm/arch-tegra/pinmux.h +++ b/arch/arm/include/asm/arch-tegra/pinmux.h @@ -81,8 +81,9 @@ struct pmux_pingrp_config { }; #if !defined(CONFIG_TEGRA20) && !defined(CONFIG_TEGRA30) -/* Set the pinmux CLAMP_INPUTS_WHEN_TRISTATED bit */ +/* Set/clear the pinmux CLAMP_INPUTS_WHEN_TRISTATED bit */ void pinmux_set_tristate_input_clamping(void); +void pinmux_clear_tristate_input_clamping(void); #endif /* Set the mux function for a pin group */ diff --git a/arch/arm/mach-tegra/pinmux-common.c b/arch/arm/mach-tegra/pinmux-common.c index 6e3ab0c14c..64baed45d5 100644 --- a/arch/arm/mach-tegra/pinmux-common.c +++ b/arch/arm/mach-tegra/pinmux-common.c @@ -94,11 +94,15 @@ void pinmux_set_tristate_input_clamping(void) { u32 *reg = _R(APB_MISC_PP_PINMUX_GLOBAL_0); - u32 val; - val = readl(reg); - val |= CLAMP_INPUTS_WHEN_TRISTATED; - writel(val, reg); + setbits_le32(reg, CLAMP_INPUTS_WHEN_TRISTATED); +} + +void pinmux_clear_tristate_input_clamping(void) +{ + u32 *reg = _R(APB_MISC_PP_PINMUX_GLOBAL_0); + + clrbits_le32(reg, CLAMP_INPUTS_WHEN_TRISTATED); } #endif -- cgit v1.2.1