ARM: dts: omap3-gta04a5: disable IrDA receiver to save power

The GTA04A5 has an improved IrDA circuit that can enable/disable
the receiver individually. We do not have an IrDA driver/subsystem
and hence the receiver should be actively turned off to save power,
especially in suspend.

Signed-off-by: H. Nikolaus Schaller <hns@goldelico.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

diff --git a/arch/arm/boot/dts/omap3-gta04a5.dts b/arch/arm/boot/dts/omap3-gta04a5.dts
index e3f9e09..e3352cc 100644 (file)
--- a/arch/arm/boot/dts/omap3-gta04a5.dts
+++ b/arch/arm/boot/dts/omap3-gta04a5.dts
@@ -25,7 +25,21 @@
 
 };
 
+&gpio5 {
+       irda_en {
+               gpio-hog;
+               gpios = <(175-160) GPIO_ACTIVE_HIGH>;
+               output-high;    /* activate gpio_175 to disable IrDA receiver */
+       };
+};
+
 &omap3_pmx_core {
+       irda_pins: pinmux_irda {
+               pinctrl-single,pins = <
+                       OMAP3_CORE1_IOPAD(0x21d0, PIN_OUTPUT_PULLUP | MUX_MODE4)        /* mcspi1_cs1 = gpio175 */
+               >;
+       };
+
        pps_pins: pinmux_pps_pins {
                pinctrl-single,pins = <
                        OMAP3_CORE1_IOPAD(0x2138, PIN_INPUT | MUX_MODE4) /* gpin114 */