[PATCH 8/9] arm64: dts: qcom: shikra-evk: Add TC9563 PCIe switch node for PCIe

[Sushrut Shree Trivedi]

Add a node for the TC9563 PCIe switch connected to PCIe. The switch
has three downstream ports.Two embedded Ethernet devices are present
on one of the downstream ports. All the ports present in the
node represent the downstream ports and embedded endpoints.

Power to the TC9563 is supplied through two LDO regulators, which
are on by default and are added as fixed regulators. TC9563 can be
configured through I2C.

Signed-off-by: Sushrut Shree Trivedi <sushrut.trivedi@xxxxxxxxxxxxxxxx>
---
 arch/arm64/boot/dts/qcom/shikra-evk.dtsi | 152 +++++++++++++++++++++++++++++++
 1 file changed, 152 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/shikra-evk.dtsi b/arch/arm64/boot/dts/qcom/shikra-evk.dtsi
index 5411f22426b7..b6d24fe5fb61 100644
--- a/arch/arm64/boot/dts/qcom/shikra-evk.dtsi
+++ b/arch/arm64/boot/dts/qcom/shikra-evk.dtsi
@@ -3,6 +3,136 @@
  * Copyright (c) Qualcomm Technologies, Inc. and/or its subsidiaries.
  */
 
+/ {
+	aliases {
+		i2c3 = &i2c3;
+	};
+
+	vreg_0p9: regulator-0v9 {
+		compatible = "regulator-fixed";
+		regulator-name = "VREG_0P9";
+
+		regulator-min-microvolt = <900000>;
+		regulator-max-microvolt = <900000>;
+		regulator-always-on;
+		regulator-boot-on;
+	};
+
+	vreg_1p8: regulator-1v8 {
+		compatible = "regulator-fixed";
+		regulator-name = "VREG_1P8";
+
+		regulator-min-microvolt = <1800000>;
+		regulator-max-microvolt = <1800000>;
+		regulator-always-on;
+		regulator-boot-on;
+	};
+};
+
+&i2c3 {
+	status = "okay";
+};
+
+&pcie {
+	wake-gpios = <&tlmm 119 GPIO_ACTIVE_LOW>;
+
+	iommu-map = <0x0 &apps_smmu 0x0800 0x1>,
+		    <0x100 &apps_smmu 0x0801 0x1>,
+		    <0x208 &apps_smmu 0x0802 0x1>,
+		    <0x210 &apps_smmu 0x0803 0x1>,
+		    <0x218 &apps_smmu 0x0804 0x1>,
+		    <0x300 &apps_smmu 0x0805 0x1>,
+		    <0x400 &apps_smmu 0x0806 0x1>,
+		    <0x500 &apps_smmu 0x0807 0x1>,
+		    <0x501 &apps_smmu 0x0808 0x1>;
+
+	pinctrl-0 = <&pcie_default_state>;
+	pinctrl-names = "default";
+
+	status = "okay";
+};
+
+&pcie_port0 {
+
+	tc9563: pcie@0,0 {
+		compatible = "pci1179,0623";
+		reg = <0x10000 0x0 0x0 0x0 0x0>;
+		#address-cells = <3>;
+		#size-cells = <2>;
+		#gpio-cells = <2>;
+		gpio-controller;
+
+		device_type = "pci";
+		ranges;
+		bus-range = <0x2 0xff>;
+
+		vddc-supply = <&vreg_0p9>;
+		vdd18-supply = <&vreg_1p8>;
+		vdd09-supply = <&vreg_0p9>;
+		vddio1-supply = <&vreg_1p8>;
+		vddio2-supply = <&vreg_1p8>;
+		vddio18-supply = <&vreg_1p8>;
+
+		i2c-parent = <&i2c3 0x77>;
+
+		resx-gpios = <&tlmm 118 GPIO_ACTIVE_LOW>;
+
+		pinctrl-0 = <&tc9563_resx_n>;
+		pinctrl-names = "default";
+
+		pcie@1,0 {
+			reg = <0x20800 0x0 0x0 0x0 0x0>;
+			#address-cells = <3>;
+			#size-cells = <2>;
+
+			device_type = "pci";
+			ranges;
+			bus-range = <0x3 0xff>;
+
+			ep-pwr-en-gpios = <&tc9563 2 GPIO_ACTIVE_HIGH>;
+			reset-gpios = <&tc9563 5 GPIO_ACTIVE_LOW>;
+		};
+
+		pcie@2,0 {
+			reg = <0x21000 0x0 0x0 0x0 0x0>;
+			#address-cells = <3>;
+			#size-cells = <2>;
+
+			device_type = "pci";
+			ranges;
+			bus-range = <0x4 0xff>;
+
+			ep-pwr-en-gpios = <&tc9563 4 GPIO_ACTIVE_HIGH>;
+			reset-gpios = <&tc9563 3 GPIO_ACTIVE_LOW>;
+		};
+
+		pcie@3,0 {
+			reg = <0x21800 0x0 0x0 0x0 0x0>;
+			#address-cells = <3>;
+			#size-cells = <2>;
+			device_type = "pci";
+			ranges;
+			bus-range = <0x5 0xff>;
+
+			pci@0,0 {
+				reg = <0x50000 0x0 0x0 0x0 0x0>;
+				#address-cells = <3>;
+				#size-cells = <2>;
+				device_type = "pci";
+				ranges;
+			};
+
+			pci@0,1 {
+				reg = <0x50100 0x0 0x0 0x0 0x0>;
+				#address-cells = <3>;
+				#size-cells = <2>;
+				device_type = "pci";
+				ranges;
+			};
+		};
+	};
+};
+
 &qupv3_0 {
 	firmware-name = "qcom/shikra/qupv3fw.elf";
 
@@ -10,11 +140,33 @@ &qupv3_0 {
 };
 
 &tlmm {
+	pcie_default_state: pcie-default-state {
+		clkreq-pins {
+			pins = "gpio117";
+			function = "pcie0_clk_req_n";
+			drive-strength = <2>;
+			bias-pull-up;
+		};
+
+		wake-pins {
+			pins = "gpio119";
+			function = "gpio";
+			drive-strength = <2>;
+			bias-pull-up;
+		};
+	};
+
 	sw_ctrl_default: sw-ctrl-default-state {
 		pins = "gpio88";
 		function = "gpio";
 		bias-pull-down;
 	};
+
+	tc9563_resx_n: tc9563-resx-state {
+		pins = "gpio118";
+		function = "gpio";
+		bias-disable;
+	};
 };
 
 &uart0 {

-- 
2.43.0