linux-kernel - [PATCH 3/3] arm64: dts: rockchip: Add PCIe v3 nodes to rock-3a

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Message-Id: <20220927181531.5546-2-amadeus@jmu.edu.cn>
Date:   Wed, 28 Sep 2022 02:15:31 +0800
From:   Chukun Pan <amadeus@....edu.cn>
To:     linux.amoon@...il.com
Cc:     heiko@...ech.de, robh+dt@...nel.org, michael.riesch@...fvision.net,
        krzysztof.kozlowski+dt@...aro.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-rockchip@...ts.infradead.org,
        linux-arm-kernel@...ts.infradead.org,
        Chukun Pan <amadeus@....edu.cn>
Subject: [PATCH 3/3] arm64: dts: rockchip: Add PCIe v3 nodes to rock-3a

Add Nodes to Radxa ROCK3 Model A board to support PCIe v3.
Also changed the vin-supply of vcc3v3_pcie regulator to
ensure that pcie is probe properly.

Signed-off-by: Chukun Pan <amadeus@....edu.cn>
---
 .../boot/dts/rockchip/rk3568-rock-3a.dts      | 52 ++++++++++++++++++-
 1 file changed, 51 insertions(+), 1 deletion(-)

diff --git a/arch/arm64/boot/dts/rockchip/rk3568-rock-3a.dts b/arch/arm64/boot/dts/rockchip/rk3568-rock-3a.dts
index 1b195355da2a..097cee13885d 100644
--- a/arch/arm64/boot/dts/rockchip/rk3568-rock-3a.dts
+++ b/arch/arm64/boot/dts/rockchip/rk3568-rock-3a.dts
@@ -67,6 +67,38 @@ vcc12v_dcin: vcc12v-dcin-regulator {
 		regulator-boot-on;
 	};
 
+	pcie30_avdd0v9: pcie30-avdd0v9-regulator {
+		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-regulator {
+		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 */
+	vcc3v3_pi6c_03: vcc3v3-pi6c-03-regulator {
+		compatible = "regulator-fixed";
+		regulator-name = "vcc3v3_pi6c03";
+		regulator-always-on;
+		regulator-boot-on;
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+		vin-supply = <&vcc5v0_sys>;
+	};
+
+	/* actually fed by vcc5v0_sys, dependent on pi6c clock generator */
 	vcc3v3_pcie: vcc3v3-pcie-regulator {
 		compatible = "regulator-fixed";
 		enable-active-high;
@@ -76,7 +108,7 @@ vcc3v3_pcie: vcc3v3-pcie-regulator {
 		regulator-name = "vcc3v3_pcie";
 		regulator-min-microvolt = <3300000>;
 		regulator-max-microvolt = <3300000>;
-		vin-supply = <&vcc5v0_sys>;
+		vin-supply = <&vcc3v3_pi6c_03>;
 	};
 
 	vcc3v3_sys: vcc3v3-sys-regulator {
@@ -547,6 +579,20 @@ &pcie2x1 {
 	status = "okay";
 };
 
+&pcie30phy {
+	phy-supply = <&vcc3v3_pi6c_03>;
+	status = "okay";
+};
+
+&pcie3x2 {
+	/* mPCIe slot */
+	pinctrl-names = "default";
+	pinctrl-0 = <&minipcie_reset_h>;
+	reset-gpios = <&gpio2 RK_PD6 GPIO_ACTIVE_HIGH>;
+	vpcie3v3-supply = <&vcc3v3_pcie>;
+	status = "okay";
+};
+
 &pinctrl {
 	cam {
 		vcc_cam_en: vcc_cam_en {
@@ -583,6 +629,10 @@ pcie_enable_h: pcie-enable-h {
 			rockchip,pins = <0 RK_PD4 RK_FUNC_GPIO &pcfg_pull_none>;
 		};
 
+		minipcie_reset_h: minipcie-reset-h {
+			rockchip,pins = <2 RK_PD6 RK_FUNC_GPIO &pcfg_pull_none>;
+		};
+
 		ngffpcie_reset_h: ngffpcie-reset-h {
 			rockchip,pins = <3 RK_PC1 RK_FUNC_GPIO &pcfg_pull_none>;
 		};
-- 
2.25.1