1 /* 2 * (C) Copyright 2010,2011 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 <asm/io.h> 26 #include <asm/arch/tegra2.h> 27 #include <asm/arch/pinmux.h> 28 #include <asm/gpio.h> 29 #ifdef CONFIG_TEGRA2_MMC 30 #include <mmc.h> 31 #endif 32 #include "../common/board.h" 33 34 /* 35 * Routine: gpio_config_uart_seaboard 36 * Description: Force GPIO_PI3 low on Seaboard so UART4 works. 37 */ 38 static void gpio_config_uart_seaboard(void) 39 { 40 /* Enable UART via GPIO_PI3 (port 8, bit 3) so serial console works */ 41 gpio_request(GPIO_PI3, NULL); 42 gpio_direction_output(GPIO_PI3, 0); 43 } 44 45 void gpio_config_uart(void) 46 { 47 if (machine_is_ventana()) 48 return; 49 gpio_config_uart_seaboard(); 50 } 51 52 #ifdef CONFIG_TEGRA2_MMC 53 /* 54 * Routine: pin_mux_mmc 55 * Description: setup the pin muxes/tristate values for the SDMMC(s) 56 */ 57 static void pin_mux_mmc(void) 58 { 59 /* SDMMC4: config 3, x8 on 2nd set of pins */ 60 pinmux_set_func(PINGRP_ATB, PMUX_FUNC_SDIO4); 61 pinmux_set_func(PINGRP_GMA, PMUX_FUNC_SDIO4); 62 pinmux_set_func(PINGRP_GME, PMUX_FUNC_SDIO4); 63 64 pinmux_tristate_disable(PINGRP_ATB); 65 pinmux_tristate_disable(PINGRP_GMA); 66 pinmux_tristate_disable(PINGRP_GME); 67 68 /* SDMMC3: SDIO3_CLK, SDIO3_CMD, SDIO3_DAT[3:0] */ 69 pinmux_set_func(PINGRP_SDB, PMUX_FUNC_SDIO3); 70 pinmux_set_func(PINGRP_SDC, PMUX_FUNC_SDIO3); 71 pinmux_set_func(PINGRP_SDD, PMUX_FUNC_SDIO3); 72 73 pinmux_tristate_disable(PINGRP_SDC); 74 pinmux_tristate_disable(PINGRP_SDD); 75 pinmux_tristate_disable(PINGRP_SDB); 76 77 /* For power GPIO PI6 */ 78 pinmux_tristate_disable(PINGRP_ATA); 79 /* For CD GPIO PI5 */ 80 pinmux_tristate_disable(PINGRP_ATC); 81 } 82 83 /* this is a weak define that we are overriding */ 84 int board_mmc_init(bd_t *bd) 85 { 86 debug("board_mmc_init called\n"); 87 88 /* Enable muxes, etc. for SDMMC controllers */ 89 pin_mux_mmc(); 90 91 debug("board_mmc_init: init eMMC\n"); 92 /* init dev 0, eMMC chip, with 4-bit bus */ 93 /* The board has an 8-bit bus, but 8-bit doesn't work yet */ 94 tegra2_mmc_init(0, 4, -1, -1); 95 96 debug("board_mmc_init: init SD slot\n"); 97 /* init dev 1, SD slot, with 4-bit bus */ 98 tegra2_mmc_init(1, 4, GPIO_PI6, GPIO_PI5); 99 100 return 0; 101 } 102 #endif 103