arm64: dts: renesas: r8a77990: Describe PCIe root port

Add node which describes the root port in the PCIe controller DT node.
This can be used together with the pwrctrl driver to control clock and
power supply to a PCIe slot.

Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://patch.msgid.link/20260118135038.8033-6-marek.vasut+renesas@mailbox.org
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>

diff --git a/arch/arm64/boot/dts/renesas/r8a77990.dtsi b/arch/arm64/boot/dts/renesas/r8a77990.dtsi
index d3698f7e494df34d350b20cb76ca2116bd8164c2..39824ba6e6d5b8667e5355656ef224058c5166ff 100644 (file)
--- a/arch/arm64/boot/dts/renesas/r8a77990.dtsi
+++ b/arch/arm64/boot/dts/renesas/r8a77990.dtsi
@@ -1912,6 +1912,16 @@
                        iommu-map = <0 &ipmmu_hc 0 1>;
                        iommu-map-mask = <0>;
                        status = "disabled";
+
+                       /* PCIe bridge, Root Port */
+                       pciec0_rp: pci@0,0 {
+                               #address-cells = <3>;
+                               #size-cells = <2>;
+                               reg = <0x0 0x0 0x0 0x0 0x0>;
+                               compatible = "pciclass,0604";
+                               device_type = "pci";
+                               ranges;
+                       };
                };
 
                vspb0: vsp@fe960000 {