diff options
Diffstat (limited to 'arch/arm/mach-tegra/common.c')
| -rw-r--r-- | arch/arm/mach-tegra/common.c | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/arch/arm/mach-tegra/common.c b/arch/arm/mach-tegra/common.c index de7173b67cb0..07faddfcfd70 100644 --- a/arch/arm/mach-tegra/common.c +++ b/arch/arm/mach-tegra/common.c @@ -988,6 +988,26 @@ void __init tegra30_init_early(void) init_dma_coherent_pool_size(SZ_1M); } #endif + +#if !defined(CONFIG_ARCH_TEGRA_2x_SOC) && !defined(CONFIG_ARCH_TEGRA_3x_SOC) +/* This register/field only exists on Tegra114 and later */ +#define APB_MISC_PP_PINMUX_GLOBAL_0 0x40 +#define CLAMP_INPUTS_WHEN_TRISTATED 1 +static void tegra_pinmux_set_tristate_input_clamping(bool enable) +{ + u32 val; + val = readl(IO_ADDRESS(TEGRA_APB_MISC_BASE + + APB_MISC_PP_PINMUX_GLOBAL_0)); + if (enable) + val |= CLAMP_INPUTS_WHEN_TRISTATED; + else + val &= ~CLAMP_INPUTS_WHEN_TRISTATED; + + writel(val, IO_ADDRESS(TEGRA_APB_MISC_BASE + + APB_MISC_PP_PINMUX_GLOBAL_0)); +} +#endif + #ifdef CONFIG_ARCH_TEGRA_11x_SOC void __init tegra11x_init_early(void) { @@ -1006,6 +1026,7 @@ void __init tegra11x_init_early(void) tegra30_hotplug_init(); tegra_init_power(); tegra_init_ahb_gizmo_settings(); + tegra_pinmux_set_tristate_input_clamping(false); tegra_init_debug_uart_rate(); init_dma_coherent_pool_size(SZ_2M); @@ -1037,6 +1058,7 @@ void __init tegra12x_init_early(void) #endif tegra_init_power(); tegra_init_ahb_gizmo_settings(); + tegra_pinmux_set_tristate_input_clamping(false); tegra_init_debug_uart_rate(); } #endif @@ -1066,6 +1088,7 @@ void __init tegra14x_init_early(void) tegra30_hotplug_init(); tegra_init_power(); tegra_init_ahb_gizmo_settings(); + tegra_pinmux_set_tristate_input_clamping(false); tegra_init_debug_uart_rate(); } #endif |