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/clock.h> 28 #include <asm/arch/funcmux.h> 29 #include <asm/arch/pinmux.h> 30 #include <asm/arch/mmc.h> 31 #include <asm/gpio.h> 32 #ifdef CONFIG_TEGRA_MMC 33 #include <mmc.h> 34 #endif 35 36 /* TODO: Remove this code when the SPI switch is working */ 37 #ifndef CONFIG_SPI_UART_SWITCH 38 /* 39 * Routine: gpio_config_uart_seaboard 40 * Description: Force GPIO_PI3 low on Seaboard so UART4 works. 41 */ 42 static void gpio_config_uart_seaboard(void) 43 { 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); 47 } 48 49 void gpio_config_uart(void) 50 { 51 if (machine_is_ventana()) 52 return; 53 gpio_config_uart_seaboard(); 54 } 55 #endif 56 57 #ifdef CONFIG_TEGRA_MMC 58 /* 59 * Routine: pin_mux_mmc 60 * Description: setup the pin muxes/tristate values for the SDMMC(s) 61 */ 62 static void pin_mux_mmc(void) 63 { 64 funcmux_select(PERIPH_ID_SDMMC4, FUNCMUX_SDMMC4_ATB_GMA_GME_8_BIT); 65 funcmux_select(PERIPH_ID_SDMMC3, FUNCMUX_SDMMC3_SDB_4BIT); 66 67 /* For power GPIO PI6 */ 68 pinmux_tristate_disable(PINGRP_ATA); 69 /* For CD GPIO PI5 */ 70 pinmux_tristate_disable(PINGRP_ATC); 71 } 72 73 /* this is a weak define that we are overriding */ 74 int board_mmc_init(bd_t *bd) 75 { 76 debug("board_mmc_init called\n"); 77 78 /* Enable muxes, etc. for SDMMC controllers */ 79 pin_mux_mmc(); 80 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); 85 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); 89 90 return 0; 91 } 92 #endif 93 94 void pin_mux_usb(void) 95 { 96 /* For USB's GPIO PD0. For now, since we have no pinmux in fdt */ 97 pinmux_tristate_disable(PINGRP_SLXK); 98 } 99