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T210: P2571: Turn CPU fan on

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CPU board (E2530) has a fan - turn it on via GPIO to keep
the SoC cool.

Acked-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Tom Warren <twarren@nvidia.com>
This commit is contained in:
Tom Warren 2015-02-20 12:22:22 -07:00
parent e7436f609c
commit 66999892b2
2 changed files with 15 additions and 0 deletions
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3
arch/arm/mach-tegra/board2.c
View File

@ -60,6 +60,7 @@ __weak void pin_mux_usb(void) {}
__weak void pin_mux_spi(void) {} __weak void pin_mux_spi(void) {}
__weak void gpio_early_init_uart(void) {} __weak void gpio_early_init_uart(void) {}
__weak void pin_mux_display(void) {} __weak void pin_mux_display(void) {}
__weak void start_cpu_fan(void) {}
#if defined(CONFIG_TEGRA_NAND) #if defined(CONFIG_TEGRA_NAND)
__weak void pin_mux_nand(void) __weak void pin_mux_nand(void)
@ -230,6 +231,8 @@ int board_late_init(void)
setenv("cpu_ns_mode", ""); setenv("cpu_ns_mode", "");
} }
#endif #endif
start_cpu_fan();
return 0; return 0;
} }

12
board/nvidia/p2571/p2571.c
View File

@ -9,6 +9,7 @@
#include <i2c.h> #include <i2c.h>
#include <asm/arch/gpio.h> #include <asm/arch/gpio.h>
#include <asm/arch/pinmux.h> #include <asm/arch/pinmux.h>
#include <asm/gpio.h>
#include "max77620_init.h" #include "max77620_init.h"
#include "pinmux-config-p2571.h" #include "pinmux-config-p2571.h"
@ -49,3 +50,14 @@ void pinmux_init(void)
pinmux_config_drvgrp_table(p2571_drvgrps, pinmux_config_drvgrp_table(p2571_drvgrps,
ARRAY_SIZE(p2571_drvgrps)); ARRAY_SIZE(p2571_drvgrps));
} }
/*
* Routine: start_cpu_fan
* Description: Enable/start PWM CPU fan on P2571
*/
void start_cpu_fan(void)
{
/* GPIO_PE4 is PS_VDD_FAN_ENABLE */
gpio_request(GPIO_PE4, "FAN_VDD");
gpio_direction_output(GPIO_PE4, 1);
}