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Subject[PATCH v2 28/32] ARM: dts: omap3-gta04a5: disable IrDA receiver to save power
Date
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>
---
arch/arm/boot/dts/omap3-gta04a5.dts | 14 ++++++++++++++
1 file changed, 14 insertions(+)

diff --git a/arch/arm/boot/dts/omap3-gta04a5.dts b/arch/arm/boot/dts/omap3-gta04a5.dts
index e3f9e0969065..e3352cc97c91 100644
--- 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 */
--
2.12.2
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