arm64: dts: rockchip: add PCIe3 bus to rk3588-evb1

Enable PCIe3 support, which is exposed via a PCIe3 connector.
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Link: https://lore.kernel.org/r/20230918141327.131108-3-sebastian.reichel@collabora.comSigned-off-by: Heiko Stuebner <heiko@sntech.de>

arch/arm64/boot/dts/rockchip/rk3588-evb1-v10.dts

@@ -49,6 +49,26 @@ pcie20_avdd1v8: pcie20-avdd1v8-regulator {
 		vin-supply = <&avcc_1v8_s0>;
 	};
 
+	pcie30_avdd0v75: pcie30-avdd0v75-regulator {
+		compatible = "regulator-fixed";
+		regulator-name = "pcie30_avdd0v75";
+		regulator-always-on;
+		regulator-boot-on;
+		regulator-min-microvolt = <750000>;
+		regulator-max-microvolt = <750000>;
+		vin-supply = <&avdd_0v75_s0>;
+	};
+
+	pcie30_avdd1v8: pcie30-avdd1v8-regulator {
+		compatible = "regulator-fixed";
+		regulator-name = "pcie30_avdd1v8";
+		regulator-always-on;
+		regulator-boot-on;
+		regulator-min-microvolt = <1800000>;
+		regulator-max-microvolt = <1800000>;
+		vin-supply = <&avcc_1v8_s0>;
+	};
+
 	vcc12v_dcin: vcc12v-dcin-regulator {
 		compatible = "regulator-fixed";
 		regulator-name = "vcc12v_dcin";
@@ -58,6 +78,19 @@ vcc12v_dcin: vcc12v-dcin-regulator {
 		regulator-max-microvolt = <12000000>;
 	};
 
+	vcc3v3_pcie30: vcc3v3-pcie30-regulator {
+		compatible = "regulator-fixed";
+		regulator-name = "vcc3v3_pcie30";
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+		enable-active-high;
+		gpios = <&gpio3 RK_PC3 GPIO_ACTIVE_HIGH>;
+		startup-delay-us = <5000>;
+		vin-supply = <&vcc12v_dcin>;
+		pinctrl-names = "default";
+		pinctrl-0 = <&vcc3v3_pcie30_en>;
+	};
+
 	vcc5v0_host: vcc5v0-host-regulator {
 		compatible = "regulator-fixed";
 		regulator-name = "vcc5v0_host";
@@ -194,6 +227,18 @@ &pcie2x1l1 {
 	status = "okay";
 };
 
+&pcie30phy {
+	status = "okay";
+};
+
+&pcie3x4 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pcie3_reset>;
+	reset-gpios = <&gpio4 RK_PB6 GPIO_ACTIVE_HIGH>;
+	vpcie3v3-supply = <&vcc3v3_pcie30>;
+	status = "okay";
+};
+
 &pinctrl {
 	rtl8111 {
 		rtl8111_isolate: rtl8111-isolate {
@@ -220,6 +265,16 @@ pcie2_1_rst: pcie2-1-rst {
 		};
 	};
 
+	pcie3 {
+		pcie3_reset: pcie3-reset {
+			rockchip,pins = <4 RK_PB6 RK_FUNC_GPIO &pcfg_pull_none>;
+		};
+
+		vcc3v3_pcie30_en: vcc3v3-pcie30-en {
+			rockchip,pins = <3 RK_PC3 RK_FUNC_GPIO &pcfg_pull_none>;
+		};
+	};
+
 	usb {
 		vcc5v0_host_en: vcc5v0-host-en {
 			rockchip,pins = <4 RK_PB0 RK_FUNC_GPIO &pcfg_pull_none>;