[RFC/RFT v2 08/11] arm64: dts: rockchip: Add PCIe v3 nodes to BPI-R2-Pro

[Frank Wunderlich]

From: Frank Wunderlich <frank-w at public-files.de>

Add Nodes to Bananapi-R2-Pro board to support PCIe v3 and
set PCIe related regulators to always on.

Signed-off-by: Frank Wunderlich <frank-w at public-files.de>
---
changes in v2:
- underscores in nodenames
- rockchip,bifurcation to vendor unspecific bifurcation
- fix trailing space
---
 .../boot/dts/rockchip/rk3568-bpi-r2-pro.dts   | 79 +++++++++++++++++++
 1 file changed, 79 insertions(+)

diff --git a/arch/arm64/boot/dts/rockchip/rk3568-bpi-r2-pro.dts b/arch/arm64/boot/dts/rockchip/rk3568-bpi-r2-pro.dts
index 2700fb18a3bc..86506d7896c6 100644
--- a/arch/arm64/boot/dts/rockchip/rk3568-bpi-r2-pro.dts
+++ b/arch/arm64/boot/dts/rockchip/rk3568-bpi-r2-pro.dts
@@ -74,6 +74,67 @@ vcc5v0_sys: vcc5v0-sys {
 		vin-supply = <&dc_12v>;
 	};
 
+	pcie30_avdd0v9: pcie30-avdd0v9 {
+		compatible = "regulator-fixed";
+		regulator-name = "pcie30_avdd0v9";
+		regulator-always-on;
+		regulator-boot-on;
+		regulator-min-microvolt = <900000>;
+		regulator-max-microvolt = <900000>;
+		vin-supply = <&vcc3v3_sys>;
+	};
+
+	pcie30_avdd1v8: pcie30-avdd1v8 {
+		compatible = "regulator-fixed";
+		regulator-name = "pcie30_avdd1v8";
+		regulator-always-on;
+		regulator-boot-on;
+		regulator-min-microvolt = <1800000>;
+		regulator-max-microvolt = <1800000>;
+		vin-supply = <&vcc3v3_sys>;
+	};
+
+	/* pi6c pcie clock generator feeds both ports */
+	vcc3v3_pi6c_05: vcc3v3-pi6c-05-regulator {
+		compatible = "regulator-fixed";
+		regulator-name = "vcc3v3_pcie";
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+		regulator-always-on;
+		regulator-boot-on;
+		enable-active-high;
+		gpios = <&gpio0 RK_PD4 GPIO_ACTIVE_HIGH>;
+		startup-delay-us = <20000>;
+		vin-supply = <&vcc5v0_sys>;
+	};
+
+	/* actually fed by vcc3v3_sys, dependent on pi6c clock generator */
+	vcc3v3_minipcie: vcc3v3-minipcie-regulator {
+		compatible = "regulator-fixed";
+		regulator-name = "vcc3v3_minipcie";
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+		regulator-always-on;
+		regulator-boot-on;
+		enable-active-high;
+		gpio = <&gpio0 RK_PC6 GPIO_ACTIVE_HIGH>;
+		startup-delay-us = <5000>;
+		vin-supply = <&vcc3v3_pi6c_05>;
+	};
+
+	/* actually fed by vcc3v3_sys, dependent on pi6c clock generator */
+	vcc3v3_ngff: vcc3v3-ngff-regulator {
+		compatible = "regulator-fixed";
+		regulator-name = "vcc3v3_ngff";
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+		regulator-boot-on;
+		enable-active-high;
+		gpio = <&gpio4 RK_PC1 GPIO_ACTIVE_HIGH>;
+		startup-delay-us = <5000>;
+		vin-supply = <&vcc3v3_pi6c_05>;
+	};
+
 	vbus: vbus {
 		compatible = "regulator-fixed";
 		regulator-name = "vbus";
@@ -411,6 +472,24 @@ rgmii_phy1: ethernet-phy at 0 {
 	};
 };
 
+&pcie30phy {
+	status = "okay";
+};
+
+&pcie3x1 {
+	bifurcation;
+	reset-gpios = <&gpio3 RK_PA1 GPIO_ACTIVE_HIGH>;
+	vpcie3v3-supply = <&vcc3v3_ngff>;
+	status = "okay";
+};
+
+&pcie3x2 {
+	bifurcation;
+	reset-gpios = <&gpio2 RK_PD6 GPIO_ACTIVE_HIGH>;
+	vpcie3v3-supply = <&vcc3v3_minipcie>;
+	status = "okay";
+};
+
 &pinctrl {
 	leds {
 		blue_led_pin: blue-led-pin {
-- 
2.25.1