[U-Boot] [PATCH V2 5/5] ARM: tegra: don't request GPIO from Seaboard's SPL

Stephen Warren
2012-10-18T23:25:59Z

From: Stephen Warren <swarren@nvidia.com>

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>
---
v2: New patch to replace modification of CONFIG_SYS_TEXT_BASE.
---
board/nvidia/seaboard/seaboard.c | 14 ++++----------
1 files changed, 4 insertions(+), 10 deletions(-)

diff --git a/board/nvidia/seaboard/seaboard.c b/board/nvidia/seaboard/seaboard.c
index 6dce57f..c08ca80 100644
--- a/board/nvidia/seaboard/seaboard.c
+++ b/board/nvidia/seaboard/seaboard.c
@@ -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>
@@ -36,21 +37,14 @@
/* TODO: Remove this code when the SPI switch is working */
#ifndef CONFIG_SPI_UART_SWITCH
#if 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)
+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);
}
-
-void gpio_early_init_uart(void)
-{
- gpio_config_uart_seaboard();
-}
#endif
#endif

--
1.7.0.4