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/*
* (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/tegra2.h>
#include <asm/arch/pinmux.h>
#include <asm/gpio.h>
#ifdef CONFIG_TEGRA2_MMC
#include <mmc.h>
#endif
#include "../common/board.h"
/*
* Routine: gpio_config_uart
* Description: Force GPIO_PI3 low on Seaboard so UART4 works.
*/
void gpio_config_uart(void)
{
int gp = GPIO_PI3;
struct gpio_ctlr *gpio = (struct gpio_ctlr *)NV_PA_GPIO_BASE;
struct gpio_ctlr_bank *bank = &gpio->gpio_bank[GPIO_BANK(gp)];
u32 val;
/* Enable UART via GPIO_PI3 (port 8, bit 3) so serial console works */
val = readl(&bank->gpio_config[GPIO_PORT(gp)]);
val |= 1 << GPIO_BIT(gp);
writel(val, &bank->gpio_config[GPIO_PORT(gp)]);
val = readl(&bank->gpio_out[GPIO_PORT(gp)]);
val &= ~(1 << GPIO_BIT(gp));
writel(val, &bank->gpio_out[GPIO_PORT(gp)]);
val = readl(&bank->gpio_dir_out[GPIO_PORT(gp)]);
val |= 1 << GPIO_BIT(gp);
writel(val, &bank->gpio_dir_out[GPIO_PORT(gp)]);
}
#ifdef CONFIG_TEGRA2_MMC
/*
* Routine: pin_mux_mmc
* Description: setup the pin muxes/tristate values for the SDMMC(s)
*/
static void pin_mux_mmc(void)
{
/* SDMMC4: config 3, x8 on 2nd set of pins */
pinmux_set_func(PINGRP_ATB, PMUX_FUNC_SDIO4);
pinmux_set_func(PINGRP_GMA, PMUX_FUNC_SDIO4);
pinmux_set_func(PINGRP_GME, PMUX_FUNC_SDIO4);
pinmux_tristate_disable(PINGRP_ATB);
pinmux_tristate_disable(PINGRP_GMA);
pinmux_tristate_disable(PINGRP_GME);
/* SDMMC3: SDIO3_CLK, SDIO3_CMD, SDIO3_DAT[3:0] */
pinmux_set_func(PINGRP_SDB, PMUX_FUNC_SDIO3);
pinmux_set_func(PINGRP_SDC, PMUX_FUNC_SDIO3);
pinmux_set_func(PINGRP_SDD, PMUX_FUNC_SDIO3);
pinmux_tristate_disable(PINGRP_SDC);
pinmux_tristate_disable(PINGRP_SDD);
pinmux_tristate_disable(PINGRP_SDB);
/* For power GPIO PI6 */
pinmux_tristate_disable(PINGRP_ATA);
/* For CD GPIO PI5 */
pinmux_tristate_disable(PINGRP_ATC);
}
/* this is a weak define that we are overriding */
int board_mmc_init(bd_t *bd)
{
debug("board_mmc_init called\n");
/* Enable muxes, etc. for SDMMC controllers */
pin_mux_mmc();
debug("board_mmc_init: init eMMC\n");
/* init dev 0, eMMC chip, with 4-bit bus */
/* The board has an 8-bit bus, but 8-bit doesn't work yet */
tegra2_mmc_init(0, 4, -1, -1);
debug("board_mmc_init: init SD slot\n");
/* init dev 1, SD slot, with 4-bit bus */
tegra2_mmc_init(1, 4, GPIO_PI6, GPIO_PI5);
return 0;
}
#endif
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