[PATCH 04/11] arm64: dts: renesas: r8a77951: Describe PCIe root ports

Marek Vasut marek.vasut+renesas at mailbox.org
Thu Jan 1 12:35:51 PST 2026


Add nodes which describe the root ports in the PCIe controller DT nodes.
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 at mailbox.org>
---
Cc: Conor Dooley <conor+dt at kernel.org>
Cc: Geert Uytterhoeven <geert+renesas at glider.be>
Cc: Krzysztof Kozlowski <krzk+dt at kernel.org>
Cc: Magnus Damm <magnus.damm at gmail.com>
Cc: Neil Armstrong <neil.armstrong at linaro.org>
Cc: Rob Herring <robh at kernel.org>
Cc: Vinod Koul <vkoul at kernel.org>
Cc: Yoshihiro Shimoda <yoshihiro.shimoda.uh at renesas.com>
Cc: devicetree at vger.kernel.org
Cc: linux-phy at lists.infradead.org
Cc: linux-renesas-soc at vger.kernel.org
---
 arch/arm64/boot/dts/renesas/r8a77951.dtsi | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/arch/arm64/boot/dts/renesas/r8a77951.dtsi b/arch/arm64/boot/dts/renesas/r8a77951.dtsi
index 1ac24e614aa9d..466794eac4d3a 100644
--- a/arch/arm64/boot/dts/renesas/r8a77951.dtsi
+++ b/arch/arm64/boot/dts/renesas/r8a77951.dtsi
@@ -2826,6 +2826,16 @@ pciec0: pcie at fe000000 {
 			iommu-map = <0 &ipmmu_hc 0 1>;
 			iommu-map-mask = <0>;
 			status = "disabled";
+
+			/* PCIe bridge, Root Port */
+			pciec0_rp: pci at 0,0 {
+				#address-cells = <3>;
+				#size-cells = <2>;
+				reg = <0x0 0x0 0x0 0x0 0x0>;
+				compatible = "pciclass,0604";
+				device_type = "pci";
+				ranges;
+			};
 		};
 
 		pciec1: pcie at ee800000 {
@@ -2855,6 +2865,16 @@ pciec1: pcie at ee800000 {
 			iommu-map = <0 &ipmmu_hc 1 1>;
 			iommu-map-mask = <0>;
 			status = "disabled";
+
+			/* PCIe bridge, Root Port */
+			pciec1_rp: pci at 0,0 {
+				#address-cells = <3>;
+				#size-cells = <2>;
+				reg = <0x0 0x0 0x0 0x0 0x0>;
+				compatible = "pciclass,0604";
+				device_type = "pci";
+				ranges;
+			};
 		};
 
 		pciec0_ep: pcie-ep at fe000000 {
-- 
2.51.0




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