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

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Message-Id: <20221112141840.516224-6-maccraft123mc@gmail.com>
Date:   Sat, 12 Nov 2022 15:18:41 +0100
From:   Maya Matuszczyk <maccraft123mc@...il.com>
To:     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-rockchip@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: [PATCH 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.

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   | 54 +++++++++++++++++++
 2 files changed, 55 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..7f4726d4130e
--- /dev/null
+++ b/arch/arm64/boot/dts/rockchip/rk3326-anbernic-rg351m.dts
@@ -0,0 +1,54 @@
+// 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";
+
+	battery: battery {
+		compatible = "simple-battery";
+		charge-full-design-microamp-hours = <3450000>;
+		charge-term-current-microamp = <300000>;
+		constant-charge-current-max-microamp = <2000000>;
+		constant-charge-voltage-max-microvolt = <4200000>;
+		factory-internal-resistance-micro-ohms = <100000>;
+		voltage-max-design-microvolt = <4100000>;
+		voltage-min-design-microvolt = <3500000>;
+
+		ocv-capacity-celsius = <20>;
+		ocv-capacity-table-0 =  <4046950 100>, <4001920 95>, <3967900 90>, <3919950 85>,
+					<3888450 80>, <3861850 75>, <3831540 70>, <3799130 65>,
+					<3768190 60>, <3745650 55>, <3726610 50>, <3711630 45>,
+					<3696720 40>, <3685660 35>, <3674950 30>, <3663050 25>,
+					<3649470 20>, <3635260 15>, <3616920 10>, <3592440 5>,
+					<3574170 0>;
+	};
+
+	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";
+};
+
+&rk817_charger {
+	monitored-battery = <&battery>;
+};
-- 
2.38.1