CPU board (E2530) has a fan - turn it on via GPIO to keep the SoC cool.
Signed-off-by: Tom Warren twarren@nvidia.com --- arch/arm/mach-tegra/board2.c | 3 +++ board/nvidia/p2571/p2571.c | 12 ++++++++++++ 2 files changed, 15 insertions(+)
diff --git a/arch/arm/mach-tegra/board2.c b/arch/arm/mach-tegra/board2.c index 36bcfb0..2927b4e 100644 --- a/arch/arm/mach-tegra/board2.c +++ b/arch/arm/mach-tegra/board2.c @@ -60,6 +60,7 @@ __weak void pin_mux_usb(void) {} __weak void pin_mux_spi(void) {} __weak void gpio_early_init_uart(void) {} __weak void pin_mux_display(void) {} +__weak void start_cpu_fan(void) {}
#if defined(CONFIG_TEGRA_NAND) __weak void pin_mux_nand(void) @@ -230,6 +231,8 @@ int board_late_init(void) setenv("cpu_ns_mode", ""); } #endif + start_cpu_fan(); + return 0; }
diff --git a/board/nvidia/p2571/p2571.c b/board/nvidia/p2571/p2571.c index 842242c..4b0f973 100644 --- a/board/nvidia/p2571/p2571.c +++ b/board/nvidia/p2571/p2571.c @@ -9,6 +9,7 @@ #include <i2c.h> #include <asm/arch/gpio.h> #include <asm/arch/pinmux.h> +#include <asm/gpio.h> #include "max77620_init.h" #include "pinmux-config-p2571.h"
@@ -49,3 +50,14 @@ void pinmux_init(void) pinmux_config_drvgrp_table(p2571_drvgrps, ARRAY_SIZE(p2571_drvgrps)); } + +/* + * Routine: start_cpu_fan + * Description: Enable/start PWM CPU fan on Foster-FFD + */ +void start_cpu_fan(void) +{ + /* GPIO_PE4 is PS_VDD_FAN_ENABLE */ + gpio_request(GPIO_PE4, "FAN_VDD"); + gpio_direction_output(GPIO_PE4, 1); +}