u-boot/arch/arm/cpu/tegra124-common/funcmux.c
Stephen Warren d68c942927 ARM: tegra: Tegra124 pinmux cleanup
This renames all the pinmux pins, drive groups, and functions so they
have a prefix which matches the type name. These lists are also auto-
generated using scripts that were also used to generate the kernel
pinctrl drivers. This ensures that the lists are consistent between the
two.

The entries in tegra124_pingroups[] are all updated to remove the columns
which are no longer used.

All affected code is updated to match.

There are differences in the set of drive groups. I have validated this
against the TRM. There are differences order of pin definitions in
pinmux.c; these previously had significant mismatches with the correct
order:-( I adjusted a few entries in pinmux-config-venice2.h since the
set of legal functions for some pins was updated to match the TRM.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Tom Warren <twarren@nvidia.com>
2014-04-17 08:41:06 -07:00

71 lines
1.8 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(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;
}