From 95658e21b1707ad7844f873db2fdaa295109a5a3 Mon Sep 17 00:00:00 2001 From: Robin Murphy Date: Mon, 14 Jan 2019 12:05:33 +0000 Subject: arm64: dts: rockchip: Add NanoPC-T4 IR receiver In common with most Rockchip reference designs, NanoPC-T4 has a passive IR receiver connected to PWM3. In lieu of a specialised driver for PWM-based IR pulse measurement, running the pin as a GPIO with the basic driver works perfectly well. Signed-off-by: Robin Murphy Signed-off-by: Heiko Stuebner --- arch/arm64/boot/dts/rockchip/rk3399-nanopc-t4.dts | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) diff --git a/arch/arm64/boot/dts/rockchip/rk3399-nanopc-t4.dts b/arch/arm64/boot/dts/rockchip/rk3399-nanopc-t4.dts index 623a03f2548a..84433cf02be9 100644 --- a/arch/arm64/boot/dts/rockchip/rk3399-nanopc-t4.dts +++ b/arch/arm64/boot/dts/rockchip/rk3399-nanopc-t4.dts @@ -45,6 +45,22 @@ press-threshold-microvolt = <18000>; }; }; + + ir-receiver { + compatible = "gpio-ir-receiver"; + gpios = <&gpio0 RK_PA6 GPIO_ACTIVE_LOW>; + pinctrl-names = "default"; + pinctrl-0 = <&ir_rx>; + }; +}; + +&pinctrl { + ir { + ir_rx: ir-rx { + /* external pullup to VCC3V3_SYS, despite being 1.8V :/ */ + rockchip,pins = <0 RK_PA6 RK_FUNC_1 &pcfg_pull_none>; + }; + }; }; &sdhci { -- cgit