mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-06-09 23:36:03 +09:00
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>
74 lines
1.9 KiB
C
74 lines
1.9 KiB
C
/*
|
|
* Copyright (c) 2010-2012, NVIDIA CORPORATION. All rights reserved.
|
|
*
|
|
* See file CREDITS for list of people who contributed to this
|
|
* project.
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify it
|
|
* under the terms and conditions of the GNU General Public License,
|
|
* version 2, as published by the Free Software Foundation.
|
|
*
|
|
* This program is distributed in the hope it will be useful, but WITHOUT
|
|
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
|
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
|
|
* more details.
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <asm/io.h>
|
|
#include <asm/arch/tegra.h>
|
|
#include <asm/arch/pinmux.h>
|
|
#include <asm/arch-tegra/mmc.h>
|
|
#include <asm/gpio.h>
|
|
#ifdef CONFIG_TEGRA_MMC
|
|
#include <mmc.h>
|
|
#endif
|
|
|
|
|
|
#ifdef CONFIG_TEGRA_MMC
|
|
/*
|
|
* Routine: pin_mux_mmc
|
|
* Description: setup the pin muxes/tristate values for the SDMMC(s)
|
|
*/
|
|
static void pin_mux_mmc(void)
|
|
{
|
|
/* SDMMC4: config 3, x8 on 2nd set of pins */
|
|
pinmux_set_func(PINGRP_ATB, PMUX_FUNC_SDIO4);
|
|
pinmux_set_func(PINGRP_GMA, PMUX_FUNC_SDIO4);
|
|
pinmux_set_func(PINGRP_GME, PMUX_FUNC_SDIO4);
|
|
|
|
pinmux_tristate_disable(PINGRP_ATB);
|
|
pinmux_tristate_disable(PINGRP_GMA);
|
|
pinmux_tristate_disable(PINGRP_GME);
|
|
|
|
/* SDIO1: SDIO1_CLK, SDIO1_CMD, SDIO1_DAT[3:0] */
|
|
pinmux_set_func(PINGRP_SDIO1, PMUX_FUNC_SDIO1);
|
|
|
|
pinmux_tristate_disable(PINGRP_SDIO1);
|
|
|
|
/* For power GPIO PV1 */
|
|
pinmux_tristate_disable(PINGRP_UAC);
|
|
/* For CD GPIO PV5 */
|
|
pinmux_tristate_disable(PINGRP_GPV);
|
|
}
|
|
|
|
/* this is a weak define that we are overriding */
|
|
int board_mmc_init(bd_t *bd)
|
|
{
|
|
debug("board_mmc_init called\n");
|
|
|
|
/* Enable muxes, etc. for SDMMC controllers */
|
|
pin_mux_mmc();
|
|
|
|
debug("board_mmc_init: init eMMC\n");
|
|
/* init dev 0, eMMC chip, with 8-bit bus */
|
|
tegra_mmc_init(0, 8, -1, -1);
|
|
|
|
debug("board_mmc_init: init SD slot\n");
|
|
/* init dev 3, SD slot, with 4-bit bus */
|
|
tegra_mmc_init(3, 4, GPIO_PV1, GPIO_PV5);
|
|
|
|
return 0;
|
|
}
|
|
#endif
|