u-boot/arch/arm/cpu/tegra124-common/funcmux.c
Tom Warren 52ef43b052 ARM: tegra: Add CPU (armv7) files for Tegra124
These files are for code that runs on the CPU (A15) on Tegra124 boards.
At this time, there is no A15-specific code here. The warmboot/LP0 files
aren't included as that code hasn't been ported yet.

Signed-off-by: Tom Warren <twarren@nvidia.com>
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Tested-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Tom Warren <twarren@nvidia.com>
2014-02-03 09:46:46 -07:00

69 lines
1.7 KiB
C

/*
* (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;
}