linux-kernel - [PATCH v4 5/5] arm64: dts: rockchip: Add Anbernic RG351M

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Date:   Thu, 17 Nov 2022 22:59:54 +0100
From:   Maya Matuszczyk <maccraft123mc@...il.com>
To:     linux-rockchip@...ts.infradead.org,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Heiko Stuebner <heiko@...ech.de>
Cc:     João H . Spies <jhlspies@...il.com>,
        Chris Morgan <macroalpha82@...il.com>,
        Maya Matuszczyk <maccraft123mc@...il.com>,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH v4 5/5] arm64: dts: rockchip: Add Anbernic RG351M

This device is a clone of Odroid Go Advance, with added PWM motor, internal
gamepad connected on USB instead of just having it be on GPIO + ADC, and
missing battery shunt resistor.
Due to missing shunt resistor and lack of a workaroun in rk817_charger
driver rk817_charger is not enabled in dts.

There's also an LED on GPIO 77(I *guess* PB5 on &gpio2),
that is controlled in a weird way:

- It is set to red by setting output value to 1
- Set to green by setting output value to 0
- Set to yellow by setting gpio direction to input

I have no idea how to describe that in DTS, without adding a custom
driver, for now it's just left out.

Signed-off-by: Maya Matuszczyk <maccraft123mc@...il.com>
---
 arch/arm64/boot/dts/rockchip/Makefile         |  1 +
 .../dts/rockchip/rk3326-anbernic-rg351m.dts   | 33 +++++++++++++++++++
 2 files changed, 34 insertions(+)
 create mode 100644 arch/arm64/boot/dts/rockchip/rk3326-anbernic-rg351m.dts

diff --git a/arch/arm64/boot/dts/rockchip/Makefile b/arch/arm64/boot/dts/rockchip/Makefile
index 142c83d2e5aa..b379516c15eb 100644
--- a/arch/arm64/boot/dts/rockchip/Makefile
+++ b/arch/arm64/boot/dts/rockchip/Makefile
@@ -7,6 +7,7 @@ dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3308-evb.dtb
 dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3308-roc-cc.dtb
 dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3308-rock-pi-s.dtb
 dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3318-a95x-z2.dtb
+dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3326-anbernic-rg351m.dtb
 dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3326-odroid-go2.dtb
 dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3326-odroid-go2-v11.dtb
 dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3326-odroid-go3.dtb
diff --git a/arch/arm64/boot/dts/rockchip/rk3326-anbernic-rg351m.dts b/arch/arm64/boot/dts/rockchip/rk3326-anbernic-rg351m.dts
new file mode 100644
index 000000000000..61b31688b469
--- /dev/null
+++ b/arch/arm64/boot/dts/rockchip/rk3326-anbernic-rg351m.dts
@@ -0,0 +1,33 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+/*
+ * Copyright (c) 2019 Hardkernel Co., Ltd
+ * Copyright (c) 2020 Theobroma Systems Design und Consulting GmbH
+ * Copyright (c) 2022 Maya Matuszczyk <maccraft123mc@...il.com>
+ */
+
+/dts-v1/;
+#include "rk3326-odroid-go.dtsi"
+
+/ {
+	model = "Anbernic RG351M";
+	compatible = "anbernic,rg351m", "rockchip,rk3326";
+
+	vibrator {
+		compatible = "pwm-vibrator";
+		pwms = <&pwm0 0 1000000 0>;
+		pwm-names = "enable";
+	};
+};
+
+/delete-node/ &builtin_gamepad;
+/delete-node/ &vcc_host; /* conflicts with pwm vibration motor */
+
+&internal_display {
+	compatible = "elida,kd35t133";
+};
+
+&pwm0 {
+	status = "okay";
+};
+
+/delete-node/ &rk817_charger;
-- 
2.38.1