1 /* 2 * Copyright (c) 2010-2012, NVIDIA CORPORATION. All rights reserved. 3 * 4 * See file CREDITS for list of people who contributed to this 5 * project. 6 * 7 * This program is free software; you can redistribute it and/or modify it 8 * under the terms and conditions of the GNU General Public License, 9 * version 2, as published by the Free Software Foundation. 10 * 11 * This program is distributed in the hope it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for 14 * more details. 15 */ 16 17 #include <common.h> 18 #include <asm/io.h> 19 #include <asm/arch/tegra20.h> 20 #include <asm/arch/pinmux.h> 21 #include <asm/arch/mmc.h> 22 #include <asm/gpio.h> 23 #ifdef CONFIG_TEGRA_MMC 24 #include <mmc.h> 25 #endif 26 27 /* 28 * Routine: gpio_config_uart 29 * Description: Does nothing on Paz00 - no conflict w/SPI. 30 */ 31 void gpio_config_uart(void) 32 { 33 } 34 35 #ifdef CONFIG_TEGRA_MMC 36 /* 37 * Routine: pin_mux_mmc 38 * Description: setup the pin muxes/tristate values for the SDMMC(s) 39 */ 40 static void pin_mux_mmc(void) 41 { 42 /* SDMMC4: config 3, x8 on 2nd set of pins */ 43 pinmux_set_func(PINGRP_ATB, PMUX_FUNC_SDIO4); 44 pinmux_set_func(PINGRP_GMA, PMUX_FUNC_SDIO4); 45 pinmux_set_func(PINGRP_GME, PMUX_FUNC_SDIO4); 46 47 pinmux_tristate_disable(PINGRP_ATB); 48 pinmux_tristate_disable(PINGRP_GMA); 49 pinmux_tristate_disable(PINGRP_GME); 50 51 /* SDIO1: SDIO1_CLK, SDIO1_CMD, SDIO1_DAT[3:0] */ 52 pinmux_set_func(PINGRP_SDIO1, PMUX_FUNC_SDIO1); 53 54 pinmux_tristate_disable(PINGRP_SDIO1); 55 56 /* For power GPIO PV1 */ 57 pinmux_tristate_disable(PINGRP_UAC); 58 /* For CD GPIO PV5 */ 59 pinmux_tristate_disable(PINGRP_GPV); 60 } 61 62 /* this is a weak define that we are overriding */ 63 int board_mmc_init(bd_t *bd) 64 { 65 debug("board_mmc_init called\n"); 66 67 /* Enable muxes, etc. for SDMMC controllers */ 68 pin_mux_mmc(); 69 70 debug("board_mmc_init: init eMMC\n"); 71 /* init dev 0, eMMC chip, with 4-bit bus */ 72 /* The board has an 8-bit bus, but 8-bit doesn't work yet */ 73 tegra_mmc_init(0, 4, -1, -1); 74 75 debug("board_mmc_init: init SD slot\n"); 76 /* init dev 3, SD slot, with 4-bit bus */ 77 tegra_mmc_init(3, 4, GPIO_PV1, GPIO_PV5); 78 79 return 0; 80 } 81 #endif 82