From: Stephen Warren <swar...@nvidia.com>
This is needed to correctly apply the new Jetson TK1 pinmux config.
Signed-off-by: Stephen Warren <swar...@nvidia.com>
---
arch/arm/cpu/tegra-common/pinmux-common.c | 10 ++++++++++
arch/arm/include/asm/arch-tegra/pinmux.h | 3 ++-
2 files changed, 12 insertions(+), 1 deletion(-)
diff --git a/arch/arm/cpu/tegra-common/pinmux-common.c
b/arch/arm/cpu/tegra-common/pinmux-common.c
index 6e3ab0c14ca2..692de7629b9b 100644
--- a/arch/arm/cpu/tegra-common/pinmux-common.c
+++ b/arch/arm/cpu/tegra-common/pinmux-common.c
@@ -100,6 +100,16 @@ void pinmux_set_tristate_input_clamping(void)
val |= CLAMP_INPUTS_WHEN_TRISTATED;
writel(val, reg);
}
+
+void pinmux_clear_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);
+}
#endif
void pinmux_set_func(enum pmux_pingrp pin, enum pmux_func func)
diff --git a/arch/arm/include/asm/arch-tegra/pinmux.h
b/arch/arm/include/asm/arch-tegra/pinmux.h
index da477697bf02..ab764960fa7f 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 */
--
1.9.1
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