Enable PCIe Host controller on R-Car V4M Gray Hawk board.
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@xxxxxxxxxxx>
---
.../dts/renesas/r8a779h0-gray-hawk-single.dts | 29 +++++++++++++++++++
1 file changed, 29 insertions(+)
diff --git a/arch/arm64/boot/dts/renesas/r8a779h0-gray-hawk-single.dts b/arch/arm64/boot/dts/renesas/r8a779h0-gray-hawk-single.dts
index 9a1917b87f61..a5faff87aa26 100644
--- a/arch/arm64/boot/dts/renesas/r8a779h0-gray-hawk-single.dts
+++ b/arch/arm64/boot/dts/renesas/r8a779h0-gray-hawk-single.dts
@@ -126,6 +126,12 @@ memory@480000000 {
reg = <0x4 0x80000000 0x1 0x80000000>;
};
+ pcie_clk: clk-9fgv0841-pci {
+ compatible = "fixed-clock";
+ clock-frequency = <100000000>;
+ #clock-cells = <0>;
+ };
+
reg_1p8v: regulator-1p8v {
compatible = "regulator-fixed";
regulator-name = "fixed-1.8V";
@@ -240,6 +246,17 @@ &i2c0 {
status = "okay";
clock-frequency = <400000>;
+ io_expander_a: gpio@20 {
+ compatible = "onnn,pca9654";
+ reg = <0x20>;
+ interrupt-parent = <&gpio0>;
+ interrupts = <0 IRQ_TYPE_LEVEL_LOW>;
+ gpio-controller;
+ #gpio-cells = <2>;
+ interrupt-controller;
+ #interrupt-cells = <2>;
+ };
+
eeprom@50 {
compatible = "rohm,br24g01", "atmel,24c01";
label = "cpu-board";
@@ -309,6 +326,18 @@ &mmc0 {
status = "okay";
};
+&pcie0_clkref {
+ compatible = "gpio-gate-clock";
+ clocks = <&pcie_clk>;
+ enable-gpios = <&gpio4 21 GPIO_ACTIVE_LOW>;
+ /delete-property/ clock-frequency;
+};
+
+&pciec0 {
+ reset-gpio = <&io_expander_a 0 GPIO_ACTIVE_LOW>;
+ status = "okay";
+};
+
&pfc {
pinctrl-0 = <&scif_clk_pins>, <&scif_clk2_pins>;
pinctrl-names = "default";
--
2.25.1
