[PATCH 7/7] arm64: dts: renesas: r8a779f0: spider: Enable PCIe Host ch0

[Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>]

Enable PCIe Host controller channel 0 on R-Car S4-8 Spider board.

Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
---
 .../boot/dts/renesas/r8a779f0-spider-cpu.dtsi | 43 +++++++++++++++++++
 1 file changed, 43 insertions(+)

diff --git a/arch/arm64/boot/dts/renesas/r8a779f0-spider-cpu.dtsi b/arch/arm64/boot/dts/renesas/r8a779f0-spider-cpu.dtsi
index 41aa8591b3b1..d5fe22355e20 100644
--- a/arch/arm64/boot/dts/renesas/r8a779f0-spider-cpu.dtsi
+++ b/arch/arm64/boot/dts/renesas/r8a779f0-spider-cpu.dtsi
@@ -5,6 +5,7 @@
  * Copyright (C) 2021 Renesas Electronics Corp.
  */
 
+#include <dt-bindings/gpio/gpio.h>
 #include "r8a779f0.dtsi"
 
 / {
@@ -31,6 +32,28 @@ &extalr_clk {
 	clock-frequency = <32768>;
 };
 
+&i2c0 {
+	pinctrl-0 = <&i2c0_pins>;
+	pinctrl-names = "default";
+
+	status = "okay";
+	clock-frequency = <400000>;
+
+	gpio_exp_20: gpio@20 {
+		compatible = "ti,tca9554";
+		reg = <0x20>;
+		gpio-controller;
+		#gpio-cells = <2>;
+
+		pcie-perst-hog {
+			gpio-hog;
+			gpios = <0 GPIO_ACTIVE_HIGH>;
+			output-high;
+			line-name = "PCIE_PERSTn";
+		};
+	};
+};
+
 &i2c4 {
 	pinctrl-0 = <&i2c4_pins>;
 	pinctrl-names = "default";
@@ -46,15 +69,35 @@ eeprom@50 {
 	};
 };
 
+&pcie_bus_clk {
+	clock-frequency = <100000000>;
+};
+
+&pciec0 {
+	pinctrl-0 = <&pcie0_pins>;
+	pinctrl-names = "default";
+	status = "okay";
+};
+
 &pfc {
 	pinctrl-0 = <&scif_clk_pins>;
 	pinctrl-names = "default";
 
+	i2c0_pins: i2c0 {
+		groups = "i2c0";
+		function = "i2c0";
+	};
+
 	i2c4_pins: i2c4 {
 		groups = "i2c4";
 		function = "i2c4";
 	};
 
+	pcie0_pins: pcie0 {
+		groups = "pcie0_clkreq_n";
+		function = "pcie";
+	};
+
 	scif3_pins: scif3 {
 		groups = "scif3_data", "scif3_ctrl";
 		function = "scif3";
-- 
2.25.1