1 /* 2 * (C) Copyright 2010,2011 3 * NVIDIA Corporation <www.nvidia.com> 4 * (C) Copyright 2011-2012 5 * Avionic Design GmbH <www.avionic-design.de> 6 * 7 * See file CREDITS for list of people who contributed to this 8 * project. 9 * 10 * This program is free software; you can redistribute it and/or 11 * modify it under the terms of the GNU General Public License as 12 * published by the Free Software Foundation; either version 2 of 13 * the License, or (at your option) any later version. 14 * 15 * This program is distributed in the hope that it will be useful, 16 * but WITHOUT ANY WARRANTY; without even the implied warranty of 17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 18 * GNU General Public License for more details. 19 * 20 * You should have received a copy of the GNU General Public License 21 * along with this program; if not, write to the Free Software 22 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, 23 * MA 02111-1307 USA 24 */ 25 26 #include <common.h> 27 #include <ns16550.h> 28 #include <asm/io.h> 29 #include <asm/gpio.h> 30 #include <asm/arch/board.h> 31 #include <asm/arch/tegra20.h> 32 #include <asm/arch/sys_proto.h> 33 #include <asm/arch/clk_rst.h> 34 #include <asm/arch/clock.h> 35 #include <asm/arch/funcmux.h> 36 #include <asm/arch/pinmux.h> 37 #include <asm/arch/uart.h> 38 #include <asm/arch/mmc.h> 39 40 #ifdef CONFIG_TEGRA_MMC 41 #include <mmc.h> 42 #endif 43 44 /* 45 * Routine: gpio_config_uart 46 * Description: Does nothing on Tamonten - no conflict w/SPI. 47 */ 48 void gpio_config_uart(void) 49 { 50 } 51 52 #ifdef CONFIG_BOARD_EARLY_INIT_F 53 void gpio_early_init(void) 54 { 55 gpio_request(GPIO_PI4, NULL); 56 gpio_direction_output(GPIO_PI4, 1); 57 } 58 #endif 59 60 #ifdef CONFIG_TEGRA_MMC 61 /* 62 * Routine: pin_mux_mmc 63 * Description: setup the pin muxes/tristate values for the SDMMC(s) 64 */ 65 static void pin_mux_mmc(void) 66 { 67 funcmux_select(PERIPH_ID_SDMMC4, FUNCMUX_SDMMC4_ATB_GMA_GME_8_BIT); 68 /* for write-protect GPIO PI6 */ 69 pinmux_tristate_disable(PINGRP_ATA); 70 /* for CD GPIO PH2 */ 71 pinmux_tristate_disable(PINGRP_ATD); 72 } 73 74 /* this is a weak define that we are overriding */ 75 int board_mmc_init(bd_t *bd) 76 { 77 /* Enable muxes, etc. for SDMMC controllers */ 78 pin_mux_mmc(); 79 80 /* init dev 0, SD slot, with 4-bit bus */ 81 tegra20_mmc_init(0, 4, GPIO_PI6, GPIO_PH2); 82 83 return 0; 84 } 85 #endif 86