arm64: dts: renesas: r9a09g056n48-rzv2n-evk: Enable PCIe

Enable the PCIE1 slot available on the RZ/V2N EVK.

Note, the PCIE_REFCLK comes from 5L35023B versa clock generator, once the
support for this clock generator is added, the fixed clock node can be
removed and can be replaced with a reference to the clock generator.

Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://patch.msgid.link/20260501105116.33452-3-prabhakar.mahadev-lad.rj@bp.renesas.com
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>

diff --git a/arch/arm64/boot/dts/renesas/r9a09g056n48-rzv2n-evk.dts b/arch/arm64/boot/dts/renesas/r9a09g056n48-rzv2n-evk.dts
index 00e5455ea5abf7444db9133e537e3388d4d2f612..43ffde419d91158f77f5701b74c3aee1dea49ef5 100644 (file)
--- a/arch/arm64/boot/dts/renesas/r9a09g056n48-rzv2n-evk.dts
+++ b/arch/arm64/boot/dts/renesas/r9a09g056n48-rzv2n-evk.dts
@@ -63,6 +63,12 @@
                reg = <0x0 0x48000000 0x1 0xf8000000>;
        };
 
+       pcie_refclk: clock-pcie-ref {
+               compatible = "fixed-clock";
+               #clock-cells = <0>;
+               clock-frequency = <100000000>;
+       };
+
        reg_0p8v: regulator-0p8v {
                compatible = "regulator-fixed";
                regulator-name = "fixed-0.8V";
@@ -333,6 +339,17 @@
        status = "okay";
 };
 
+&pcie {
+       pinctrl-0 = <&pcie_pins>;
+       pinctrl-names = "default";
+       status = "okay";
+};
+
+&pcie_port0 {
+       clocks = <&pcie_refclk>;
+       clock-names = "ref";
+};
+
 &pinctrl {
        eth0_pins: eth0 {
                pins = "ET0_TXC_TXCLK";
@@ -383,6 +400,12 @@
                         <RZV2N_PORT_PINMUX(0, 7, 1)>; /* I2C8_SCL */
        };
 
+       pcie_pins: pcie {
+               pins = "PCIE0_RSTOUTB";
+               slew-rate = <0>;
+               renesas,output-impedance = <2>;
+       };
+
        scif_pins: scif {
                pins = "SCIF_TXD", "SCIF_RXD";
                renesas,output-impedance = <1>;