diff options
| author | Stephen Warren <swarren@nvidia.com> | 2012-05-14 13:13:45 +0000 |
|---|---|---|
| committer | Albert ARIBAUD <albert.u.boot@aribaud.net> | 2012-07-07 14:07:17 +0200 |
| commit | b9607e70614823893d1a47a377232d2a12e4464f (patch) | |
| tree | 26e9dbf7576047153ef6fea510003efddcd886ba /arch | |
| parent | aa53c7f55fdf93d4377b4eecbfc235144902cc91 (diff) | |
tegra: add alternate UART1 funcmux entry
(In at least some configurations) Whistler uses UART1 on pingroups
UAA, UAB.
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Tom Warren <twarren@nvidia.com>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/cpu/armv7/tegra2/board.c | 14 | ||||
| -rw-r--r-- | arch/arm/cpu/armv7/tegra2/funcmux.c | 13 | ||||
| -rw-r--r-- | arch/arm/include/asm/arch-tegra2/funcmux.h | 1 |
3 files changed, 26 insertions, 2 deletions
diff --git a/arch/arm/cpu/armv7/tegra2/board.c b/arch/arm/cpu/armv7/tegra2/board.c index a50b1b988a2..629ad5d67f8 100644 --- a/arch/arm/cpu/armv7/tegra2/board.c +++ b/arch/arm/cpu/armv7/tegra2/board.c @@ -101,6 +101,18 @@ int arch_cpu_init(void) } #endif +static int uart_configs[] = { +#ifdef CONFIG_TEGRA2_UARTA_UAA_UAB + FUNCMUX_UART1_UAA_UAB, +#else + FUNCMUX_UART1_IRRX_IRTX, +#endif + FUNCMUX_UART2_IRDA, + -1, + FUNCMUX_UART4_GMC, + -1, +}; + /** * Set up the specified uarts * @@ -120,7 +132,7 @@ static void setup_uarts(int uart_ids) if (uart_ids & (1 << i)) { enum periph_id id = id_for_uart[i]; - funcmux_select(id, FUNCMUX_DEFAULT); + funcmux_select(id, uart_configs[i]); clock_ll_start_uart(id); } } diff --git a/arch/arm/cpu/armv7/tegra2/funcmux.c b/arch/arm/cpu/armv7/tegra2/funcmux.c index 0ef77530218..e2d1273dc91 100644 --- a/arch/arm/cpu/armv7/tegra2/funcmux.c +++ b/arch/arm/cpu/armv7/tegra2/funcmux.c @@ -31,11 +31,22 @@ int funcmux_select(enum periph_id id, int config) switch (id) { case PERIPH_ID_UART1: - if (config == FUNCMUX_UART1_IRRX_IRTX) { + switch (config) { + case FUNCMUX_UART1_IRRX_IRTX: pinmux_set_func(PINGRP_IRRX, PMUX_FUNC_UARTA); pinmux_set_func(PINGRP_IRTX, PMUX_FUNC_UARTA); pinmux_tristate_disable(PINGRP_IRRX); pinmux_tristate_disable(PINGRP_IRTX); + break; + case FUNCMUX_UART1_UAA_UAB: + pinmux_set_func(PINGRP_UAA, PMUX_FUNC_UARTA); + pinmux_set_func(PINGRP_UAB, PMUX_FUNC_UARTA); + pinmux_tristate_disable(PINGRP_UAA); + pinmux_tristate_disable(PINGRP_UAB); + bad_config = 0; + break; + } + if (!bad_config) { /* * Tegra appears to boot with function UARTA pre- * selected on mux group SDB. If two mux groups are diff --git a/arch/arm/include/asm/arch-tegra2/funcmux.h b/arch/arm/include/asm/arch-tegra2/funcmux.h index ae73c72ebe2..b455122594d 100644 --- a/arch/arm/include/asm/arch-tegra2/funcmux.h +++ b/arch/arm/include/asm/arch-tegra2/funcmux.h @@ -30,6 +30,7 @@ enum { /* UART configs */ FUNCMUX_UART1_IRRX_IRTX = 0, + FUNCMUX_UART1_UAA_UAB, FUNCMUX_UART2_IRDA = 0, FUNCMUX_UART4_GMC = 0, |