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https://github.com/AsahiLinux/u-boot
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72573543b5
Harmony contains an SD slot with all 8 bits routed. This allows plugging in an eMMC-chip-in-SD-form-factor. Seaboard/Springbank/Ventana/AC100 all have an eMMC chip with all 8 bits hooked up. Now that the U-Boot eMMC code fully supports 8-bit operation, initialize those ports as 8-bit instead of 4-bit to improve performance. Whistler was already registering its ports as 8-bit. TrimSlice doesn't have any 8-bit ports. I don't have any Avionic Design boards nor the Colibri board to test with. Signed-off-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Tom Warren <twarren@nvidia.com>
73 lines
1.9 KiB
C
73 lines
1.9 KiB
C
/*
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* Copyright (c) 2010-2012, NVIDIA CORPORATION. All rights reserved.
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*/
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#include <common.h>
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#include <asm/io.h>
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#include <asm/arch/tegra.h>
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#include <asm/arch/pinmux.h>
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#include <asm/arch-tegra/mmc.h>
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#include <asm/gpio.h>
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#ifdef CONFIG_TEGRA_MMC
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#include <mmc.h>
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#endif
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#ifdef CONFIG_TEGRA_MMC
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/*
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* Routine: pin_mux_mmc
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* Description: setup the pin muxes/tristate values for the SDMMC(s)
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*/
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static void pin_mux_mmc(void)
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{
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/* SDMMC4: config 3, x8 on 2nd set of pins */
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pinmux_set_func(PINGRP_ATB, PMUX_FUNC_SDIO4);
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pinmux_set_func(PINGRP_GMA, PMUX_FUNC_SDIO4);
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pinmux_set_func(PINGRP_GME, PMUX_FUNC_SDIO4);
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pinmux_tristate_disable(PINGRP_ATB);
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pinmux_tristate_disable(PINGRP_GMA);
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pinmux_tristate_disable(PINGRP_GME);
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/* SDIO1: SDIO1_CLK, SDIO1_CMD, SDIO1_DAT[3:0] */
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pinmux_set_func(PINGRP_SDIO1, PMUX_FUNC_SDIO1);
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pinmux_tristate_disable(PINGRP_SDIO1);
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/* For power GPIO PV1 */
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pinmux_tristate_disable(PINGRP_UAC);
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/* For CD GPIO PV5 */
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pinmux_tristate_disable(PINGRP_GPV);
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}
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/* this is a weak define that we are overriding */
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int board_mmc_init(bd_t *bd)
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{
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debug("board_mmc_init called\n");
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/* Enable muxes, etc. for SDMMC controllers */
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pin_mux_mmc();
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debug("board_mmc_init: init eMMC\n");
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/* init dev 0, eMMC chip, with 8-bit bus */
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tegra_mmc_init(0, 8, -1, -1);
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debug("board_mmc_init: init SD slot\n");
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/* init dev 3, SD slot, with 4-bit bus */
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tegra_mmc_init(3, 4, GPIO_PV1, GPIO_PV5);
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return 0;
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}
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#endif
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