linux-kernel - [PATCH] arm64: dts: rockchip: add the vdd

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Message-Id: <20220223162054.1626257-1-michael.riesch@wolfvision.net>
Date:   Wed, 23 Feb 2022 17:20:54 +0100
From:   Michael Riesch <michael.riesch@...fvision.net>
To:     devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-rockchip@...ts.infradead.org, linux-kernel@...r.kernel.org
Cc:     Rob Herring <robh+dt@...nel.org>, Heiko Stuebner <heiko@...ech.de>,
        Michael Riesch <michael.riesch@...fvision.net>,
        Liang Chen <cl@...k-chips.com>
Subject: [PATCH] arm64: dts: rockchip: add the vdd_cpu regulator to rk3568-evb1-v10

The TCS4525 voltage regulator provides the vdd_cpu on the Rockchip
RK3568 EVB1. Add the device tree node and connect it to the CPU
nodes.

Signed-off-by: Michael Riesch <michael.riesch@...fvision.net>
---
 .../boot/dts/rockchip/rk3568-evb1-v10.dts     | 33 +++++++++++++++++++
 1 file changed, 33 insertions(+)

diff --git a/arch/arm64/boot/dts/rockchip/rk3568-evb1-v10.dts b/arch/arm64/boot/dts/rockchip/rk3568-evb1-v10.dts
index bb7177ff92ac..a794a0ea5c70 100644
--- a/arch/arm64/boot/dts/rockchip/rk3568-evb1-v10.dts
+++ b/arch/arm64/boot/dts/rockchip/rk3568-evb1-v10.dts
@@ -136,6 +136,22 @@ regulator-state-mem {
 	};
 };
 
+&cpu0 {
+	cpu-supply = <&vdd_cpu>;
+};
+
+&cpu1 {
+	cpu-supply = <&vdd_cpu>;
+};
+
+&cpu2 {
+	cpu-supply = <&vdd_cpu>;
+};
+
+&cpu3 {
+	cpu-supply = <&vdd_cpu>;
+};
+
 &gmac0 {
 	assigned-clocks = <&cru SCLK_GMAC0_RX_TX>, <&cru SCLK_GMAC0>;
 	assigned-clock-parents = <&cru SCLK_GMAC0_RGMII_SPEED>;
@@ -176,6 +192,23 @@ &gpu {
 &i2c0 {
 	status = "okay";
 
+	vdd_cpu: regulator@1c {
+		compatible = "tcs,tcs4525";
+		reg = <0x1c>;
+		fcs,suspend-voltage-selector = <1>;
+		regulator-name = "vdd_cpu";
+		regulator-always-on;
+		regulator-boot-on;
+		regulator-min-microvolt = <800000>;
+		regulator-max-microvolt = <1150000>;
+		regulator-ramp-delay = <2300>;
+		vin-supply = <&vcc5v0_sys>;
+
+		regulator-state-mem {
+			regulator-off-in-suspend;
+		};
+	};
+
 	rk809: pmic@20 {
 		compatible = "rockchip,rk809";
 		reg = <0x20>;
-- 
2.30.2