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ARM: tegra: add function to clear pinmux CLAMPING bit

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This is needed to correctly apply the new Jetson TK1 pinmux config.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Tom Warren <twarren@nvidia.com>
This commit is contained in:
Stephen Warren 2015-02-18 13:27:03 -07:00 committed by Tom Warren
parent 73c38934da
commit f799b03f37
2 changed files with 10 additions and 5 deletions
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3
arch/arm/include/asm/arch-tegra/pinmux.h
View File

@ -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 */

12
arch/arm/mach-tegra/pinmux-common.c
View File

@ -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