90 lines
2.2 KiB
Diff
90 lines
2.2 KiB
Diff
From 3a2819ee9c71d1c6388e456cc4eb042914d15d7e Mon Sep 17 00:00:00 2001
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From: Jonas Karlman <jonas@kwiboo.se>
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Date: Tue, 4 Mar 2025 20:16:37 +0000
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Subject: [PATCH] arm64: dts: rockchip: Add maskrom button to Radxa E20C
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Radxa E20C has two buttons, one SARADC maskrom button and one GPIO user
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button.
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Add support for the maskrom button using a adc-keys node, also add the
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regulators used by SARADC controller.
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Signed-off-by: Jonas Karlman <jonas@kwiboo.se>
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Link: https://lore.kernel.org/r/20250304201642.831218-5-jonas@kwiboo.se
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Signed-off-by: Heiko Stuebner <heiko@sntech.de>
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---
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.../boot/dts/rockchip/rk3528-radxa-e20c.dts | 48 +++++++++++++++++++
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1 file changed, 48 insertions(+)
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--- a/arch/arm64/boot/dts/rockchip/rk3528-radxa-e20c.dts
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+++ b/arch/arm64/boot/dts/rockchip/rk3528-radxa-e20c.dts
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@@ -19,6 +19,20 @@
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stdout-path = "serial0:1500000n8";
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};
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+ adc-keys {
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+ compatible = "adc-keys";
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+ io-channels = <&saradc 0>;
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+ io-channel-names = "buttons";
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+ keyup-threshold-microvolt = <1800000>;
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+ poll-interval = <100>;
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+
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+ button-maskrom {
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+ label = "MASKROM";
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+ linux,code = <KEY_SETUP>;
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+ press-threshold-microvolt = <0>;
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+ };
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+ };
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+
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gpio-keys {
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compatible = "gpio-keys";
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pinctrl-names = "default";
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@@ -61,6 +75,35 @@
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linux,default-trigger = "netdev";
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};
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};
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+
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+ vcc_1v8: regulator-1v8-vcc {
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+ compatible = "regulator-fixed";
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+ regulator-name = "vcc_1v8";
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+ regulator-always-on;
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+ regulator-boot-on;
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+ regulator-min-microvolt = <1800000>;
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+ regulator-max-microvolt = <1800000>;
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+ vin-supply = <&vcc_3v3>;
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+ };
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+
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+ vcc_3v3: regulator-3v3-vcc {
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+ compatible = "regulator-fixed";
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+ regulator-name = "vcc_3v3";
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+ regulator-always-on;
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+ regulator-boot-on;
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+ regulator-min-microvolt = <3300000>;
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+ regulator-max-microvolt = <3300000>;
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+ vin-supply = <&vcc5v0_sys>;
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+ };
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+
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+ vcc5v0_sys: regulator-5v0-vcc-sys {
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+ compatible = "regulator-fixed";
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+ regulator-name = "vcc5v0_sys";
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+ regulator-always-on;
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+ regulator-boot-on;
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+ regulator-min-microvolt = <5000000>;
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+ regulator-max-microvolt = <5000000>;
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+ };
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};
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&pinctrl {
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@@ -85,6 +128,11 @@
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};
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};
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+&saradc {
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+ vref-supply = <&vcc_1v8>;
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+ status = "okay";
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+};
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+
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&uart0 {
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pinctrl-names = "default";
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pinctrl-0 = <&uart0m0_xfer>;
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