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 #ifdef CONFIG_TEGRA2_MMC 29 #include <mmc.h> 30 #endif 31 #include "../common/board.h" 32 33 /* 34 * Routine: gpio_config_uart 35 * Description: Does nothing on Harmony - no conflict w/SPI. 36 */ 37 void gpio_config_uart(void) 38 { 39 } 40 41 #ifdef CONFIG_TEGRA2_MMC 42 /* 43 * Routine: pin_mux_mmc 44 * Description: setup the pin muxes/tristate values for the SDMMC(s) 45 */ 46 static void pin_mux_mmc(void) 47 { 48 /* SDMMC4: config 3, x8 on 2nd set of pins */ 49 pinmux_set_func(PINGRP_ATB, PMUX_FUNC_SDIO4); 50 pinmux_set_func(PINGRP_GMA, PMUX_FUNC_SDIO4); 51 pinmux_set_func(PINGRP_GME, PMUX_FUNC_SDIO4); 52 53 pinmux_tristate_disable(PINGRP_ATB); 54 pinmux_tristate_disable(PINGRP_GMA); 55 pinmux_tristate_disable(PINGRP_GME); 56 57 /* For power GPIO PI6 */ 58 pinmux_tristate_disable(PINGRP_ATA); 59 /* For CD GPIO PH2 */ 60 pinmux_tristate_disable(PINGRP_ATD); 61 62 /* SDMMC2: SDIO2_CLK, SDIO2_CMD, SDIO2_DAT[7:0] */ 63 pinmux_set_func(PINGRP_DTA, PMUX_FUNC_SDIO2); 64 pinmux_set_func(PINGRP_DTD, PMUX_FUNC_SDIO2); 65 66 pinmux_tristate_disable(PINGRP_DTA); 67 pinmux_tristate_disable(PINGRP_DTD); 68 69 /* For power GPIO PT3 */ 70 pinmux_tristate_disable(PINGRP_DTB); 71 /* For CD GPIO PI5 */ 72 pinmux_tristate_disable(PINGRP_ATC); 73 } 74 75 /* 76 * Routine: gpio_config_mmc 77 * Description: Set GPIOs for SD card 78 */ 79 void gpio_config_mmc(void) 80 { 81 /* Not implemented for now */ 82 } 83 84 /* this is a weak define that we are overriding */ 85 int board_mmc_init(bd_t *bd) 86 { 87 debug("board_mmc_init called\n"); 88 89 /* Enable muxes, etc. for SDMMC controllers */ 90 pin_mux_mmc(); 91 gpio_config_mmc(); 92 93 debug("board_mmc_init: init SD slot J26\n"); 94 /* init dev 0, SD slot J26, with 4-bit bus */ 95 /* The board has an 8-bit bus, but 8-bit doesn't work yet */ 96 tegra2_mmc_init(0, 4); 97 98 debug("board_mmc_init: init SD slot J5\n"); 99 /* init dev 2, SD slot J5, with 4-bit bus */ 100 tegra2_mmc_init(2, 4); 101 102 return 0; 103 } 104 105 /* this is a weak define that we are overriding */ 106 int board_mmc_getcd(u8 *cd, struct mmc *mmc) 107 { 108 debug("board_mmc_getcd called\n"); 109 /* 110 * Hard-code CD presence for now. Need to add GPIO inputs 111 * for Harmony 112 */ 113 *cd = 1; 114 return 0; 115 } 116 #endif 117