mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-07-15 23:56:23 +09:00
a2ab6b7d32
Seaboard has a GPIO that switches an external mux between Tegra's debug UART and SPI flash. This is initialized from the SPL so that SPL debug output can be seen. Simplify the code that does this, and don't actually request the GPIO in the SPL; just program it. This saves ~4.5K from the size of the SPL, mostly BSS due to the large gpio_names[] table that is no longer required. This makes Seaboard's SPL fit within the current max size. Signed-off-by: Stephen Warren <swarren@nvidia.com> Acked-by: Simon Glass <sjg@chromium.org> Acked-by: Allen Martin <amartin@nvidia.com> Tested-by: Simon Glass <sjg@chromium.org> Signed-off-by: Tom Warren <twarren@nvidia.com>
91 lines
2.5 KiB
C
91 lines
2.5 KiB
C
/*
|
|
* (C) Copyright 2010,2011
|
|
* NVIDIA Corporation <www.nvidia.com>
|
|
*
|
|
* 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 of the GNU General Public License as
|
|
* published by the Free Software Foundation; either version 2 of
|
|
* the License, or (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that 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.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
|
|
* MA 02111-1307 USA
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <asm/io.h>
|
|
#include <asm/arch/tegra.h>
|
|
#include <asm/arch/clock.h>
|
|
#include <asm/arch/funcmux.h>
|
|
#include <asm/arch/gpio.h>
|
|
#include <asm/arch/pinmux.h>
|
|
#include <asm/arch-tegra/mmc.h>
|
|
#include <asm/gpio.h>
|
|
#ifdef CONFIG_TEGRA_MMC
|
|
#include <mmc.h>
|
|
#endif
|
|
|
|
/* TODO: Remove this code when the SPI switch is working */
|
|
#if !defined(CONFIG_SPI_UART_SWITCH) && (CONFIG_MACH_TYPE != MACH_TYPE_VENTANA)
|
|
void gpio_early_init_uart(void)
|
|
{
|
|
/* Enable UART via GPIO_PI3 (port 8, bit 3) so serial console works */
|
|
#ifndef CONFIG_SPL_BUILD
|
|
gpio_request(GPIO_PI3, NULL);
|
|
#endif
|
|
gpio_direction_output(GPIO_PI3, 0);
|
|
}
|
|
#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)
|
|
{
|
|
funcmux_select(PERIPH_ID_SDMMC4, FUNCMUX_SDMMC4_ATB_GMA_GME_8_BIT);
|
|
funcmux_select(PERIPH_ID_SDMMC3, FUNCMUX_SDMMC3_SDB_4BIT);
|
|
|
|
/* For power GPIO PI6 */
|
|
pinmux_tristate_disable(PINGRP_ATA);
|
|
/* For CD GPIO PI5 */
|
|
pinmux_tristate_disable(PINGRP_ATC);
|
|
}
|
|
|
|
/* 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 4-bit bus */
|
|
/* The board has an 8-bit bus, but 8-bit doesn't work yet */
|
|
tegra_mmc_init(0, 4, -1, -1);
|
|
|
|
debug("board_mmc_init: init SD slot\n");
|
|
/* init dev 1, SD slot, with 4-bit bus */
|
|
tegra_mmc_init(1, 4, GPIO_PI6, GPIO_PI5);
|
|
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
void pin_mux_usb(void)
|
|
{
|
|
/* For USB's GPIO PD0. For now, since we have no pinmux in fdt */
|
|
pinmux_tristate_disable(PINGRP_SLXK);
|
|
}
|