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

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Message-Id: <20220426132139.26761-9-linux@fw-web.de>
Date:   Tue, 26 Apr 2022 15:21:36 +0200
From:   Frank Wunderlich <linux@...web.de>
To:     linux-rockchip@...ts.infradead.org
Cc:     Frank Wunderlich <frank-w@...lic-files.de>,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Heiko Stuebner <heiko@...ech.de>,
        Kishon Vijay Abraham I <kishon@...com>,
        Vinod Koul <vkoul@...nel.org>,
        Lorenzo Pieralisi <lorenzo.pieralisi@....com>,
        Krzysztof Wilczyński <kw@...ux.com>,
        Philipp Zabel <p.zabel@...gutronix.de>,
        Johan Jonker <jbx6244@...il.com>,
        Peter Geis <pgwipeout@...il.com>,
        Michael Riesch <michael.riesch@...fvision.net>,
        linux-pci@...r.kernel.org, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-phy@...ts.infradead.org
Subject: [RFC/RFT v2 08/11] arm64: dts: rockchip: Add PCIe v3 nodes to BPI-R2-Pro

From: Frank Wunderlich <frank-w@...lic-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@...lic-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@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