linux-kernel - [PATCH 3/3] arm64: dts: rockchip: Add PCIe for RockPI N10

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Message-Id: <20200720110230.367985-3-jagan@amarulasolutions.com>
Date:   Mon, 20 Jul 2020 16:32:30 +0530
From:   Jagan Teki <jagan@...rulasolutions.com>
To:     Heiko Stuebner <heiko@...ech.de>, Rob Herring <robh+dt@...nel.org>
Cc:     Suniel Mahesh <sunil@...rulasolutions.com>,
        Michael Trimarchi <michael@...rulasolutions.com>,
        linux-arm-kernel@...ts.infradead.org,
        linux-rockchip@...ts.infradead.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        linux-amarula <linux-amarula@...rulasolutions.com>,
        Jagan Teki <jagan@...rulasolutions.com>
Subject: [PATCH 3/3] arm64: dts: rockchip: Add PCIe for RockPI N10

This patch adds support to enable PCIe for RockPI N10.

Signed-off-by: Jagan Teki <jagan@...rulasolutions.com>
---
 .../dts/rockchip/rk3399pro-vmarc-som.dtsi     | 41 ++++++++++++++++++-
 1 file changed, 39 insertions(+), 2 deletions(-)

diff --git a/arch/arm64/boot/dts/rockchip/rk3399pro-vmarc-som.dtsi b/arch/arm64/boot/dts/rockchip/rk3399pro-vmarc-som.dtsi
index ebccc4a153a2..b415b8a16c78 100644
--- a/arch/arm64/boot/dts/rockchip/rk3399pro-vmarc-som.dtsi
+++ b/arch/arm64/boot/dts/rockchip/rk3399pro-vmarc-som.dtsi
@@ -11,6 +11,19 @@
 
 / {
 	compatible = "vamrs,rk3399pro-vmarc-som", "rockchip,rk3399pro";
+
+
+	vcc3v3_pcie: vcc-pcie-regulator {
+		compatible = "regulator-fixed";
+		enable-active-high;
+		gpio = <&gpio4 RK_PD4 GPIO_ACTIVE_HIGH>;
+		pinctrl-names = "default";
+		pinctrl-0 = <&pcie_pwr>;
+		regulator-name = "vcc3v3_pcie";
+		regulator-always-on;
+		regulator-boot-on;
+		vin-supply = <&vcc5v0_sys>;
+	};
 };
 
 &cpu_l0 {
@@ -142,7 +155,8 @@ vcca_0v9: LDO_REG1 {
 				regulator-min-microvolt = <900000>;
 				regulator-max-microvolt = <900000>;
 				regulator-state-mem {
-					regulator-off-in-suspend;
+					regulator-on-in-suspend;
+					regulator-suspend-microvolt = <900000>;
 				};
 			};
 
@@ -177,7 +191,8 @@ vcca_1v8: LDO_REG4 {
 				regulator-min-microvolt = <1850000>;
 				regulator-max-microvolt = <1850000>;
 				regulator-state-mem {
-					regulator-off-in-suspend;
+					regulator-on-in-suspend;
+					regulator-suspend-microvolt = <1850000>;
 				};
 			};
 
@@ -304,6 +319,22 @@ &io_domains {
 	sdmmc-supply = <&vccio_sd>;
 };
 
+&pcie_phy {
+	status = "okay";
+};
+
+&pcie0 {
+	ep-gpios = <&gpio0 RK_PB4 GPIO_ACTIVE_HIGH>;
+	max-link-speed = <2>;
+	num-lanes = <4>;
+	pinctrl-0 = <&pcie_clkreqnb_cpm>;
+	pinctrl-names = "default";
+	vpcie0v9-supply = <&vcca_0v9>;	/* VCC_0V9_S0 */
+	vpcie1v8-supply = <&vcca_1v8>;	/* VCC_1V8_S0 */
+	vpcie3v3-supply = <&vcc3v3_pcie>;
+	status = "okay";
+};
+
 &pinctrl {
 	hym8563 {
 		hym8563_int: hym8563-int {
@@ -311,6 +342,12 @@ hym8563_int: hym8563-int {
 		};
 	};
 
+	pcie {
+		pcie_pwr: pcie-pwr {
+			rockchip,pins =	<4 RK_PD4 RK_FUNC_GPIO &pcfg_pull_up>;
+		};
+	};
+
 	pmic {
 		pmic_int_l: pmic-int-l {
 			rockchip,pins = <1 RK_PC2 0 &pcfg_pull_up>;
-- 
2.25.1