[PATCH 28/32] ARM: dts: omap3-gta04a5: disable IrDA receiver to save power
From: H. Nikolaus Schaller <hidden>
Date: 2018-07-25 06:59:51
Also in:
linux-omap, lkml
Subsystem:
the rest · Maintainer:
Linus Torvalds
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 <redacted> --- 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