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>
28 #ifdef CONFIG_TEGRA2_MMC
33 * Routine: gpio_config_uart
34 * Description: Force GPIO_PI3 low on Seaboard so UART4 works.
36 void gpio_config_uart(void)
39 struct gpio_ctlr *gpio = (struct gpio_ctlr *)NV_PA_GPIO_BASE;
40 struct gpio_ctlr_bank *bank = &gpio->gpio_bank[GPIO_BANK(gp)];
43 /* Enable UART via GPIO_PI3 (port 8, bit 3) so serial console works */
44 val = readl(&bank->gpio_config[GPIO_PORT(gp)]);
45 val |= 1 << GPIO_BIT(gp);
46 writel(val, &bank->gpio_config[GPIO_PORT(gp)]);
48 val = readl(&bank->gpio_out[GPIO_PORT(gp)]);
49 val &= ~(1 << GPIO_BIT(gp));
50 writel(val, &bank->gpio_out[GPIO_PORT(gp)]);
52 val = readl(&bank->gpio_dir_out[GPIO_PORT(gp)]);
53 val |= 1 << GPIO_BIT(gp);
54 writel(val, &bank->gpio_dir_out[GPIO_PORT(gp)]);
57 #ifdef CONFIG_TEGRA2_MMC
59 * Routine: gpio_config_mmc
60 * Description: Set GPIOs for SDMMC3 SDIO slot.
62 void gpio_config_mmc(void)
64 /* Set EN_VDDIO_SD (GPIO I6) */
65 gpio_direction_output(GPIO_PI6, 1);
67 /* Config pin as GPI for Card Detect (GPIO I5) */
68 gpio_direction_input(GPIO_PI5);
71 /* this is a weak define that we are overriding */
72 int board_mmc_getcd(u8 *cd, struct mmc *mmc)
74 debug("board_mmc_getcd called\n");
75 *cd = 1; /* Assume card is inserted, or eMMC */
78 /* Seaboard SDMMC3 = SDIO3_CD = GPIO_PI5 */
79 if (gpio_get_value(GPIO_PI5))