uboot-vybrid_public/board/nvidia/seaboard/seaboard.c

/*
 *  (C) Copyright 2010,2011
 *  NVIDIA Corporation <www.nvidia.com>
 *
 * See file CREDITS for list of people who contributed to this
 * project.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation; either version 2 of
 * the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
 * MA 02111-1307 USA
 */

#include <common.h>
#include <asm/io.h>
#include <asm/arch/tegra.h>
#include <asm/arch/clock.h>
#include <asm/arch/funcmux.h>
#include <asm/arch/gpio.h>
#include <asm/arch/pinmux.h>
#include <asm/gpio.h>

/* TODO: Remove this code when the SPI switch is working */
#if !defined(CONFIG_SPI_UART_SWITCH) && (CONFIG_MACH_TYPE != MACH_TYPE_VENTANA)
void gpio_early_init_uart(void)
{
	/* Enable UART via GPIO_PI3 (port 8, bit 3) so serial console works */
#ifndef CONFIG_SPL_BUILD
	gpio_request(GPIO_PI3, NULL);
#endif
	gpio_direction_output(GPIO_PI3, 0);
}
#endif

#ifdef CONFIG_TEGRA_MMC
/*
 * Routine: pin_mux_mmc
 * Description: setup the pin muxes/tristate values for the SDMMC(s)
 */
void pin_mux_mmc(void)
{
	funcmux_select(PERIPH_ID_SDMMC4, FUNCMUX_SDMMC4_ATB_GMA_GME_8_BIT);
	funcmux_select(PERIPH_ID_SDMMC3, FUNCMUX_SDMMC3_SDB_4BIT);

	/* For power GPIO PI6 */
	pinmux_tristate_disable(PINGRP_ATA);
	/* For CD GPIO PI5 */
	pinmux_tristate_disable(PINGRP_ATC);
}
#endif

void pin_mux_usb(void)
{
	/* For USB's GPIO PD0. For now, since we have no pinmux in fdt */
	pinmux_tristate_disable(PINGRP_SLXK);
}