1 /*
2  *  (C) Copyright 2010-2012
3  *  NVIDIA Corporation <www.nvidia.com>
4  *
5  * See file CREDITS for list of people who contributed to this
6  * project.
7  *
8  * This program is free software; you can redistribute it and/or
9  * modify it under the terms of the GNU General Public License as
10  * published by the Free Software Foundation; either version 2 of
11  * the License, or (at your option) any later version.
12  *
13  * This program is distributed in the hope that it will be useful,
14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
16  * GNU General Public License for more details.
17  *
18  * You should have received a copy of the GNU General Public License
19  * along with this program; if not, write to the Free Software
20  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
21  * MA 02111-1307 USA
22  */
23 
24 #include <common.h>
25 #include <i2c.h>
26 #include <asm/io.h>
27 #include <asm/arch/tegra20.h>
28 #include <asm/arch/clock.h>
29 #include <asm/arch/funcmux.h>
30 #include <asm/arch/pinmux.h>
31 #include <asm/arch/mmc.h>
32 #include <asm/gpio.h>
33 #ifdef CONFIG_TEGRA_MMC
34 #include <mmc.h>
35 #endif
36 
37 /*
38  * Routine: gpio_config_uart
39  * Description: Does nothing on TrimSlice - no UART-related GPIOs.
40  */
41 void gpio_config_uart(void)
42 {
43 }
44 
45 void pin_mux_spi(void)
46 {
47 	funcmux_select(PERIPH_ID_SPI1, FUNCMUX_SPI1_GMC_GMD);
48 }
49 
50 /*
51  * Routine: pin_mux_mmc
52  * Description: setup the pin muxes/tristate values for the SDMMC(s)
53  */
54 static void pin_mux_mmc(void)
55 {
56 	funcmux_select(PERIPH_ID_SDMMC1, FUNCMUX_SDMMC1_SDIO1_4BIT);
57 	funcmux_select(PERIPH_ID_SDMMC4, FUNCMUX_SDMMC4_ATB_GMA_4_BIT);
58 
59 	/* For CD GPIO PP1 */
60 	pinmux_tristate_disable(PINGRP_DAP3);
61 }
62 
63 /* this is a weak define that we are overriding */
64 int board_mmc_init(bd_t *bd)
65 {
66 	debug("board_mmc_init called\n");
67 
68 	/* Enable muxes, etc. for SDMMC controllers */
69 	pin_mux_mmc();
70 
71 	/* init dev 0 (SDMMC4), (micro-SD slot) with 4-bit bus */
72 	tegra20_mmc_init(0, 4, -1, GPIO_PP1);
73 
74 	/* init dev 3 (SDMMC1), (SD slot) with 4-bit bus */
75 	tegra20_mmc_init(3, 4, -1, -1);
76 
77 	return 0;
78 }
79