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| author | Stefano Babic <sbabic@denx.de> | 2014-03-05 12:51:26 +0100 |
|---|---|---|
| committer | Stefano Babic <sbabic@denx.de> | 2014-03-05 12:51:26 +0100 |
| commit | 1ad6364eeb4f578e423081d1748e8a3fdf1ab01d (patch) | |
| tree | f55731737edf1cfd653b21f2ff9d387e6c53ae24 /arch/arm/cpu/tegra124-common/funcmux.c | |
| parent | 335143c76612a0ae26eef8abeda77641d4f63b50 (diff) | |
| parent | cc07294bc704694ae33db75b25ac557e5917a83f (diff) | |
Merge branch 'master' of git://git.denx.de/u-boot-arm
Diffstat (limited to 'arch/arm/cpu/tegra124-common/funcmux.c')
| -rw-r--r-- | arch/arm/cpu/tegra124-common/funcmux.c | 69 |
1 files changed, 69 insertions, 0 deletions
diff --git a/arch/arm/cpu/tegra124-common/funcmux.c b/arch/arm/cpu/tegra124-common/funcmux.c new file mode 100644 index 0000000000..d19fda06c5 --- /dev/null +++ b/arch/arm/cpu/tegra124-common/funcmux.c @@ -0,0 +1,69 @@ +/* + * (C) Copyright 2013 + * NVIDIA Corporation <www.nvidia.com> + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +/* Tegra124 high-level function multiplexing */ + +#include <common.h> +#include <asm/arch/clock.h> +#include <asm/arch/funcmux.h> +#include <asm/arch/pinmux.h> + +int funcmux_select(enum periph_id id, int config) +{ + int bad_config = config != FUNCMUX_DEFAULT; + + switch (id) { + case PERIPH_ID_UART4: + switch (config) { + case FUNCMUX_UART4_GPIO: /* TXD,RXD,CTS,RTS */ + pinmux_set_func(PINGRP_GPIO_PJ7, PMUX_FUNC_UARTD); + pinmux_set_func(PINGRP_GPIO_PB0, PMUX_FUNC_UARTD); + pinmux_set_func(PINGRP_GPIO_PB1, PMUX_FUNC_UARTD); + pinmux_set_func(PINGRP_GPIO_PK7, PMUX_FUNC_UARTD); + + pinmux_set_io(PINGRP_GPIO_PJ7, PMUX_PIN_OUTPUT); + pinmux_set_io(PINGRP_GPIO_PB0, PMUX_PIN_INPUT); + pinmux_set_io(PINGRP_GPIO_PB1, PMUX_PIN_INPUT); + pinmux_set_io(PINGRP_GPIO_PK7, PMUX_PIN_OUTPUT); + + pinmux_tristate_disable(PINGRP_GPIO_PJ7); + pinmux_tristate_disable(PINGRP_GPIO_PB0); + pinmux_tristate_disable(PINGRP_GPIO_PB1); + pinmux_tristate_disable(PINGRP_GPIO_PK7); + break; + } + break; + + case PERIPH_ID_UART1: + switch (config) { + case FUNCMUX_UART1_KBC: + pinmux_set_func(PINGRP_KB_ROW9, PMUX_FUNC_UARTA); + pinmux_set_func(PINGRP_KB_ROW10, PMUX_FUNC_UARTA); + + pinmux_set_io(PINGRP_KB_ROW9, PMUX_PIN_OUTPUT); + pinmux_set_io(PINGRP_KB_ROW10, PMUX_PIN_INPUT); + + pinmux_tristate_disable(PINGRP_KB_ROW9); + pinmux_tristate_disable(PINGRP_KB_ROW10); + break; + } + break; + + /* Add other periph IDs here as needed */ + + default: + debug("%s: invalid periph_id %d", __func__, id); + return -1; + } + + if (bad_config) { + debug("%s: invalid config %d for periph_id %d", __func__, + config, id); + return -1; + } + return 0; +} |