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/clock.h> 31 #include <asm/arch/funcmux.h> 32 #include <asm/arch/pinmux.h> 33 #include <asm/arch/tegra.h> 34 #include <asm/arch-tegra/board.h> 35 #include <asm/arch-tegra/clk_rst.h> 36 #include <asm/arch-tegra/mmc.h> 37 #include <asm/arch-tegra/sys_proto.h> 38 #include <asm/arch-tegra/uart.h> 39 #ifdef CONFIG_TEGRA_MMC 40 #include <mmc.h> 41 #endif 42 43 /* 44 * Routine: gpio_config_uart 45 * Description: Does nothing on Tamonten - no conflict w/SPI. 46 */ 47 void gpio_config_uart(void) 48 { 49 } 50 51 #ifdef CONFIG_BOARD_EARLY_INIT_F 52 void gpio_early_init(void) 53 { 54 gpio_request(GPIO_PI4, NULL); 55 gpio_direction_output(GPIO_PI4, 1); 56 } 57 #endif 58 59 #ifdef CONFIG_TEGRA_MMC 60 /* 61 * Routine: pin_mux_mmc 62 * Description: setup the pin muxes/tristate values for the SDMMC(s) 63 */ 64 static void pin_mux_mmc(void) 65 { 66 funcmux_select(PERIPH_ID_SDMMC4, FUNCMUX_SDMMC4_ATB_GMA_GME_8_BIT); 67 /* for write-protect GPIO PI6 */ 68 pinmux_tristate_disable(PINGRP_ATA); 69 /* for CD GPIO PH2 */ 70 pinmux_tristate_disable(PINGRP_ATD); 71 } 72 73 /* this is a weak define that we are overriding */ 74 int board_mmc_init(bd_t *bd) 75 { 76 /* Enable muxes, etc. for SDMMC controllers */ 77 pin_mux_mmc(); 78 79 /* init dev 0, SD slot, with 4-bit bus */ 80 tegra_mmc_init(0, 4, GPIO_PI6, GPIO_PH2); 81 82 return 0; 83 } 84 #endif 85