aboutsummaryrefslogtreecommitdiff
path: root/arch/arm/mach-tegra/tegra30/funcmux.c
blob: c3ee787f33b158674d764e1c8daa467f21da3905 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
// SPDX-License-Identifier: GPL-2.0
/*
 * Copyright (c) 2010-2012, NVIDIA CORPORATION.  All rights reserved.
 */

/* Tegra30 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_UART1:
		switch (config) {
		case FUNCMUX_UART1_ULPI:
			pinmux_set_func(PMUX_PINGRP_ULPI_DATA0_PO1,
					PMUX_FUNC_UARTA);
			pinmux_set_func(PMUX_PINGRP_ULPI_DATA1_PO2,
					PMUX_FUNC_UARTA);
			pinmux_set_func(PMUX_PINGRP_ULPI_DATA2_PO3,
					PMUX_FUNC_UARTA);
			pinmux_set_func(PMUX_PINGRP_ULPI_DATA3_PO4,
					PMUX_FUNC_UARTA);
			pinmux_tristate_disable(PMUX_PINGRP_ULPI_DATA0_PO1);
			pinmux_tristate_disable(PMUX_PINGRP_ULPI_DATA1_PO2);
			pinmux_tristate_disable(PMUX_PINGRP_ULPI_DATA2_PO3);
			pinmux_tristate_disable(PMUX_PINGRP_ULPI_DATA3_PO4);
			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;
}