2 * (C) Copyright 2010,2011
3 * NVIDIA Corporation <www.nvidia.com>
5 * See file CREDITS for list of people who contributed to this
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.
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.
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,
26 #include <asm/arch/tegra2.h>
27 #include <asm/arch/clock.h>
28 #include <asm/arch/funcmux.h>
29 #include <asm/arch/pinmux.h>
30 #include <asm/arch/mmc.h>
32 #ifdef CONFIG_TEGRA_MMC
36 /* TODO: Remove this code when the SPI switch is working */
37 #ifndef CONFIG_SPI_UART_SWITCH
39 * Routine: gpio_config_uart_seaboard
40 * Description: Force GPIO_PI3 low on Seaboard so UART4 works.
42 static void gpio_config_uart_seaboard(void)
44 /* Enable UART via GPIO_PI3 (port 8, bit 3) so serial console works */
45 gpio_request(GPIO_PI3, NULL);
46 gpio_direction_output(GPIO_PI3, 0);
49 void gpio_config_uart(void)
51 if (machine_is_ventana())
53 gpio_config_uart_seaboard();
57 #ifdef CONFIG_TEGRA_MMC
59 * Routine: pin_mux_mmc
60 * Description: setup the pin muxes/tristate values for the SDMMC(s)
62 static void pin_mux_mmc(void)
64 funcmux_select(PERIPH_ID_SDMMC4, FUNCMUX_SDMMC4_ATB_GMA_GME_8_BIT);
65 funcmux_select(PERIPH_ID_SDMMC3, FUNCMUX_SDMMC3_SDB_4BIT);
67 /* For power GPIO PI6 */
68 pinmux_tristate_disable(PINGRP_ATA);
70 pinmux_tristate_disable(PINGRP_ATC);
73 /* this is a weak define that we are overriding */
74 int board_mmc_init(bd_t *bd)
76 debug("board_mmc_init called\n");
78 /* Enable muxes, etc. for SDMMC controllers */
81 debug("board_mmc_init: init eMMC\n");
82 /* init dev 0, eMMC chip, with 4-bit bus */
83 /* The board has an 8-bit bus, but 8-bit doesn't work yet */
84 tegra2_mmc_init(0, 4, -1, -1);
86 debug("board_mmc_init: init SD slot\n");
87 /* init dev 1, SD slot, with 4-bit bus */
88 tegra2_mmc_init(1, 4, GPIO_PI6, GPIO_PI5);
94 void pin_mux_usb(void)
96 /* For USB's GPIO PD0. For now, since we have no pinmux in fdt */
97 pinmux_tristate_disable(PINGRP_SLXK);