mirror of
https://github.com/smaeul/u-boot.git
synced 2025-11-03 21:48:15 +00:00
72 lines
1.8 KiB
C
72 lines
1.8 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* (C) Copyright 2013
|
|
* NVIDIA Corporation <www.nvidia.com>
|
|
*/
|
|
|
|
/* Tegra124 high-level function multiplexing */
|
|
|
|
#include <common.h>
|
|
#include <log.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(PMUX_PINGRP_PJ7, PMUX_FUNC_UARTD);
|
|
pinmux_set_func(PMUX_PINGRP_PB0, PMUX_FUNC_UARTD);
|
|
pinmux_set_func(PMUX_PINGRP_PB1, PMUX_FUNC_UARTD);
|
|
pinmux_set_func(PMUX_PINGRP_PK7, PMUX_FUNC_UARTD);
|
|
|
|
pinmux_set_io(PMUX_PINGRP_PJ7, PMUX_PIN_OUTPUT);
|
|
pinmux_set_io(PMUX_PINGRP_PB0, PMUX_PIN_INPUT);
|
|
pinmux_set_io(PMUX_PINGRP_PB1, PMUX_PIN_INPUT);
|
|
pinmux_set_io(PMUX_PINGRP_PK7, PMUX_PIN_OUTPUT);
|
|
|
|
pinmux_tristate_disable(PMUX_PINGRP_PJ7);
|
|
pinmux_tristate_disable(PMUX_PINGRP_PB0);
|
|
pinmux_tristate_disable(PMUX_PINGRP_PB1);
|
|
pinmux_tristate_disable(PMUX_PINGRP_PK7);
|
|
break;
|
|
}
|
|
break;
|
|
|
|
case PERIPH_ID_UART1:
|
|
switch (config) {
|
|
case FUNCMUX_UART1_KBC:
|
|
pinmux_set_func(PMUX_PINGRP_KB_ROW9_PS1,
|
|
PMUX_FUNC_UARTA);
|
|
pinmux_set_func(PMUX_PINGRP_KB_ROW10_PS2,
|
|
PMUX_FUNC_UARTA);
|
|
|
|
pinmux_set_io(PMUX_PINGRP_KB_ROW9_PS1, PMUX_PIN_OUTPUT);
|
|
pinmux_set_io(PMUX_PINGRP_KB_ROW10_PS2, PMUX_PIN_INPUT);
|
|
|
|
pinmux_tristate_disable(PMUX_PINGRP_KB_ROW9_PS1);
|
|
pinmux_tristate_disable(PMUX_PINGRP_KB_ROW10_PS2);
|
|
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;
|
|
}
|