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