apalis-tk1: set apalis gpio 8 aka fan_en

Make sure the Apalis GPIO 8 aka FAN_EN is on when using Apalis TK1
modules.

Reviewed-by: Oleksandr Suvorov <oleksandr.suvorov@toradex.com>
Signed-off-by: Igor Opaniuk <igor.opaniuk@toradex.com>
Signed-off-by: Dominik Sliwa <dominik.sliwa@toradex.com>
Signed-off-by: Tom Warren <twarren@nvidia.com>

diff --git a/board/toradex/apalis-tk1/apalis-tk1.c b/board/toradex/apalis-tk1/apalis-tk1.c
index b87e9e7a3efc21c2dd1602d6e7fe612f7bd4c876..d57c5042dddb98a5a724755c7017d6736970dbd6 100644 (file)
--- a/board/toradex/apalis-tk1/apalis-tk1.c
+++ b/board/toradex/apalis-tk1/apalis-tk1.c
@@ -19,6 +19,7 @@
 
 #define LAN_DEV_OFF_N  TEGRA_GPIO(O, 6)
 #define LAN_RESET_N    TEGRA_GPIO(S, 2)
+#define FAN_EN         TEGRA_GPIO(DD, 2)
 #define LAN_WAKE_N     TEGRA_GPIO(O, 5)
 #ifdef CONFIG_APALIS_TK1_PCIE_EVALBOARD_INIT
 #define PEX_PERST_N    TEGRA_GPIO(DD, 1) /* Apalis GPIO7 */
@@ -241,6 +242,15 @@ void tegra_pcie_board_port_reset(struct tegra_pcie_port *port)
 }
 #endif /* CONFIG_PCI_TEGRA */
 
+/*
+ * Enable/start PWM CPU fan
+ */
+void start_cpu_fan(void)
+{
+       gpio_request(FAN_EN, "FAN_EN");
+       gpio_direction_output(FAN_EN, 1);
+}
+
 /*
  * Backlight off before OS handover
  */