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ARM: tegra: don't request GPIO from Seaboard's SPL

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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>
This commit is contained in:
Stephen Warren 2012-10-22 06:19:36 +00:00 committed by Tom Warren
parent da1f735272
commit a2ab6b7d32
1 changed files with 6 additions and 12 deletions
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18
board/nvidia/seaboard/seaboard.c
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@ -26,6 +26,7 @@
#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>
@ -35,20 +36,13 @@
/* TODO: Remove this code when the SPI switch is working */
#if !defined(CONFIG_SPI_UART_SWITCH) && (CONFIG_MACH_TYPE != MACH_TYPE_VENTANA)
/*
* Routine: gpio_config_uart_seaboard
* Description: Force GPIO_PI3 low on Seaboard so UART4 works.
*/
static void gpio_config_uart_seaboard(void)
{
/* Enable UART via GPIO_PI3 (port 8, bit 3) so serial console works */
gpio_request(GPIO_PI3, NULL);
gpio_direction_output(GPIO_PI3, 0);
}
void gpio_early_init_uart(void)
{
gpio_config_uart_seaboard();
/* 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