The RZ Smarc Crarrier-II board has PCIe slots mounted on it.
Enable PCIe support.

Signed-off-by: John Madieu <john.madieu.xa@bp.renesas.com>
---

Changes:

v9:
 - Renamed gpio-hog node from 'pcie-clkreq-n' to 'pcie-clkreq-n-hog'
   to satisfy DT schema naming constraint (reported by Biju)
 - Updated line-name with proper signal name on the board
 - Fixed node sort order within &pinctrl (reported by Geert)

v8: No changes
v7: No changes
v6: No changes
v5: No changes
v4: No changes

v3:
 - Splitted enablement into common carrier dtsi and board dts

v2:
 - Removed board-specific dma-ranges.
 - Merged enablement and pinmux assignment in same file

 .../boot/dts/renesas/r9a09g047e57-smarc.dts      | 16 ++++++++++++++++
 arch/arm64/boot/dts/renesas/renesas-smarc2.dtsi  |  4 ++++
 2 files changed, 20 insertions(+)

diff --git a/arch/arm64/boot/dts/renesas/r9a09g047e57-smarc.dts b/arch/arm64/boot/dts/renesas/r9a09g047e57-smarc.dts
index 696903dc7a63..3e24e916874f 100644
--- a/arch/arm64/boot/dts/renesas/r9a09g047e57-smarc.dts
+++ b/arch/arm64/boot/dts/renesas/r9a09g047e57-smarc.dts

@@ -122,6 +122,11 @@ key-sleep {
 #endif
 };
 
+&pcie {
+	pinctrl-0 = <&pcie_pins>;
+	pinctrl-names = "default";
+};
+
 &pinctrl {
 	canfd_pins: canfd {
 		can1_pins: can1 {

@@ -145,6 +150,17 @@ nmi_pins: nmi {
 		input-schmitt-enable;
 	};
 
+	pcie-clkreq-n-hog {
+		gpio-hog;
+		gpios = <RZG3E_GPIO(4, 5) GPIO_ACTIVE_HIGH>;
+		output-low;
+		line-name = "PCIE_M2B_CKREQ";
+	};
+
+	pcie_pins: pcie {
+		pinmux = <RZG3E_PORT_PINMUX(G, 7, 1)>; /* PCIE_RST_OUT# */
+	};
+
 	rsci2_pins: rsci2 {
 		pinmux = <RZG3E_PORT_PINMUX(1, 0, 1)>, /* RXD2 */
 			 <RZG3E_PORT_PINMUX(1, 1, 1)>, /* TXD2 */

diff --git a/arch/arm64/boot/dts/renesas/renesas-smarc2.dtsi b/arch/arm64/boot/dts/renesas/renesas-smarc2.dtsi
index b607b5d6c259..e2a34577a1a1 100644
--- a/arch/arm64/boot/dts/renesas/renesas-smarc2.dtsi
+++ b/arch/arm64/boot/dts/renesas/renesas-smarc2.dtsi

@@ -96,6 +96,10 @@ &i2c0 {
 	clock-frequency = <400000>;
 };
 
+&pcie {
+	status = "okay";
+};
+
 &scif0 {
 	status = "okay";
 };

-- 
2.25.1