blob: 3b4891743023fcec557848deaa693658d4f30798 [file] [log] [blame]
Stephen Warren2996e2d2012-01-06 12:14:42 +00001/*
2 * Copyright (c) 2010-2012, NVIDIA CORPORATION. All rights reserved.
3 *
4 * See file CREDITS for list of people who contributed to this
5 * project.
6 *
7 * This program is free software; you can redistribute it and/or modify it
8 * under the terms and conditions of the GNU General Public License,
9 * version 2, as published by the Free Software Foundation.
10 *
11 * This program is distributed in the hope it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
14 * more details.
15 */
16
17#include <common.h>
18#include <asm/io.h>
19#include <asm/arch/tegra2.h>
20#include <asm/arch/pinmux.h>
21#include <asm/arch/mmc.h>
22#include <asm/gpio.h>
23#ifdef CONFIG_TEGRA2_MMC
24#include <mmc.h>
25#endif
26
27/*
28 * Routine: gpio_config_uart
29 * Description: Does nothing on Paz00 - no conflict w/SPI.
30 */
31void gpio_config_uart(void)
32{
33}
34
35#ifdef CONFIG_TEGRA2_MMC
36/*
37 * Routine: pin_mux_mmc
38 * Description: setup the pin muxes/tristate values for the SDMMC(s)
39 */
40static void pin_mux_mmc(void)
41{
42 /* SDMMC4: config 3, x8 on 2nd set of pins */
43 pinmux_set_func(PINGRP_ATB, PMUX_FUNC_SDIO4);
44 pinmux_set_func(PINGRP_GMA, PMUX_FUNC_SDIO4);
45 pinmux_set_func(PINGRP_GME, PMUX_FUNC_SDIO4);
46
47 pinmux_tristate_disable(PINGRP_ATB);
48 pinmux_tristate_disable(PINGRP_GMA);
49 pinmux_tristate_disable(PINGRP_GME);
50
51 /* SDMMC1: SDIO1_CLK, SDIO1_CMD, SDIO1_DAT[3:0] */
52 pinmux_set_func(PINGRP_SDMMC1, PMUX_FUNC_SDIO1);
53
54 pinmux_tristate_disable(PINGRP_SDMMC1);
55
56 /* For power GPIO PV1 */
57 pinmux_tristate_disable(PINGRP_UAC);
58 /* For CD GPIO PI5 */
59 pinmux_tristate_disable(PINGRP_ATC);
60}
61
62/* this is a weak define that we are overriding */
63int board_mmc_init(bd_t *bd)
64{
65 debug("board_mmc_init called\n");
66
67 /* Enable muxes, etc. for SDMMC controllers */
68 pin_mux_mmc();
69
70 debug("board_mmc_init: init eMMC\n");
71 /* init dev 0, eMMC chip, with 4-bit bus */
72 /* The board has an 8-bit bus, but 8-bit doesn't work yet */
73 tegra2_mmc_init(0, 4, -1, -1);
74
75 debug("board_mmc_init: init SD slot\n");
76 /* init dev 3, SD slot, with 4-bit bus */
77 tegra2_mmc_init(3, 4, GPIO_PV1, GPIO_PI5);
78
79 return 0;
80}
81#endif