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arm64: dts: rockchip: Add NanoPC-T4 IR receiver

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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 <robin.murphy@arm.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
This commit is contained in:
Robin Murphy 2019-01-14 12:05:33 +00:00 committed by Heiko Stuebner
parent c62ffaf502
commit 95658e21b1
1 changed files with 16 additions and 0 deletions
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16
arch/arm64/boot/dts/rockchip/rk3399-nanopc-t4.dts
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@ -45,6 +45,22 @@ recovery {
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 {