1 /*
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 */
17 #include <common.h>
18 #include <asm/io.h>
19 #include <asm/arch/tegra.h>
20 #include <asm/arch/pinmux.h>
21 #include <asm/arch-tegra/mmc.h>
22 #include <asm/gpio.h>
23 #ifdef CONFIG_TEGRA_MMC
24 #include <mmc.h>
25 #endif
28 #ifdef CONFIG_TEGRA_MMC
29 /*
30 * Routine: pin_mux_mmc
31 * Description: setup the pin muxes/tristate values for the SDMMC(s)
32 */
33 static void pin_mux_mmc(void)
34 {
35 /* SDMMC4: config 3, x8 on 2nd set of pins */
36 pinmux_set_func(PINGRP_ATB, PMUX_FUNC_SDIO4);
37 pinmux_set_func(PINGRP_GMA, PMUX_FUNC_SDIO4);
38 pinmux_set_func(PINGRP_GME, PMUX_FUNC_SDIO4);
40 pinmux_tristate_disable(PINGRP_ATB);
41 pinmux_tristate_disable(PINGRP_GMA);
42 pinmux_tristate_disable(PINGRP_GME);
44 /* SDIO1: SDIO1_CLK, SDIO1_CMD, SDIO1_DAT[3:0] */
45 pinmux_set_func(PINGRP_SDIO1, PMUX_FUNC_SDIO1);
47 pinmux_tristate_disable(PINGRP_SDIO1);
49 /* For power GPIO PV1 */
50 pinmux_tristate_disable(PINGRP_UAC);
51 /* For CD GPIO PV5 */
52 pinmux_tristate_disable(PINGRP_GPV);
53 }
55 /* this is a weak define that we are overriding */
56 int board_mmc_init(bd_t *bd)
57 {
58 debug("board_mmc_init called\n");
60 /* Enable muxes, etc. for SDMMC controllers */
61 pin_mux_mmc();
63 debug("board_mmc_init: init eMMC\n");
64 /* init dev 0, eMMC chip, with 8-bit bus */
65 tegra_mmc_init(0, 8, -1, -1);
67 debug("board_mmc_init: init SD slot\n");
68 /* init dev 3, SD slot, with 4-bit bus */
69 tegra_mmc_init(3, 4, GPIO_PV1, GPIO_PV5);
71 return 0;
72 }
73 #endif
75 #ifdef CONFIG_LCD
76 /* this is a weak define that we are overriding */
77 void pin_mux_display(void)
78 {
79 debug("init display pinmux\n");
81 /* EN_VDD_PANEL GPIO A4 */
82 pinmux_tristate_disable(PINGRP_DAP2);
83 }
84 #endif