linux-kernel - [PATCH] arm64: dts: rockchip: Enable PCIe controller on rock3a

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Date:   Tue, 26 Jul 2022 10:35:16 +0800
From:   Chukun Pan <amadeus@....edu.cn>
To:     Heiko Stuebner <heiko@...ech.de>
Cc:     Michael Riesch <michael.riesch@...fvision.net>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        devicetree@...r.kernel.org, linux-rockchip@...ts.infradead.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Chukun Pan <amadeus@....edu.cn>
Subject: [PATCH] arm64: dts: rockchip: Enable PCIe controller on rock3a

Add the nodes to enable the PCIe controller on the
Radxa ROCK3 Model A board. Run test with the MT7921
pcie wireless card.

Signed-off-by: Chukun Pan <amadeus@....edu.cn>
---
 .../boot/dts/rockchip/rk3568-rock-3a.dts      | 34 +++++++++++++++++++
 1 file changed, 34 insertions(+)

diff --git a/arch/arm64/boot/dts/rockchip/rk3568-rock-3a.dts b/arch/arm64/boot/dts/rockchip/rk3568-rock-3a.dts
index 0813c0c5abde..3ce7eb05defc 100644
--- a/arch/arm64/boot/dts/rockchip/rk3568-rock-3a.dts
+++ b/arch/arm64/boot/dts/rockchip/rk3568-rock-3a.dts
@@ -119,6 +119,18 @@ vcc5v0_usb_otg: vcc5v0-usb-otg-regulator {
 		regulator-max-microvolt = <5000000>;
 		vin-supply = <&vcc5v0_usb>;
 	};
+
+	vcc3v3_pcie: vcc3v3-pcie-regulator {
+		compatible = "regulator-fixed";
+		enable-active-high;
+		gpios = <&gpio0 RK_PD4 GPIO_ACTIVE_HIGH>;
+		pinctrl-names = "default";
+		pinctrl-0 = <&pcie_enable_h>;
+		regulator-name = "vcc3v3_pcie";
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+		vin-supply = <&vcc5v0_sys>;
+	};
 };
 
 &combphy0 {
@@ -129,6 +141,10 @@ &combphy1 {
 	status = "okay";
 };
 
+&combphy2 {
+	status = "okay";
+};
+
 &cpu0 {
 	cpu-supply = <&vdd_cpu>;
 };
@@ -423,6 +439,14 @@ rgmii_phy1: ethernet-phy@0 {
 	};
 };
 
+&pcie2x1 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pcie_reset_h>;
+	reset-gpios = <&gpio3 RK_PC1 GPIO_ACTIVE_HIGH>;
+	vpcie3v3-supply = <&vcc3v3_pcie>;
+	status = "okay";
+};
+
 &pinctrl {
 	ethernet {
 		eth_phy_rst: eth_phy_rst {
@@ -436,6 +460,16 @@ led_user_en: led_user_en {
 		};
 	};
 
+	pcie {
+		pcie_enable_h: pcie-enable-h {
+			rockchip,pins = <0 RK_PD4 RK_FUNC_GPIO &pcfg_pull_none>;
+		};
+
+		pcie_reset_h: pcie-reset-h {
+			rockchip,pins = <3 RK_PC1 RK_FUNC_GPIO &pcfg_pull_none>;
+		};
+	};
+
 	pmic {
 		pmic_int: pmic_int {
 			rockchip,pins =
-- 
2.25.1