Update the device tree binding example to include usage of the `reset-gpios` property in PCIe Root Port (RP) bridge node for PERST# signal handling. Signed-off-by: Sai Krishna Musham <sai.krishna.musham@xxxxxxx> Reviewed-by: Rob Herring (Arm) <robh@xxxxxxxxxx> --- Changes in v5: - Add Reviewed-by tag. Changes in v4: - Remove reset-gpios define as it is already part of pci-bus-common.yaml. Changes in v3: - Move reset-gpios to PCI bridge node. Changes in v2: - Update commit message v4 https://lore.kernel.org/all/20250626054906.3277029-1-sai.krishna.musham@xxxxxxx/ v3 https://lore.kernel.org/r/20250618080931.2472366-1-sai.krishna.musham@xxxxxxx/ v2 https://lore.kernel.org/r/20250429090046.1512000-1-sai.krishna.musham@xxxxxxx/ v1 https://lore.kernel.org/r/20250326041507.98232-1-sai.krishna.musham@xxxxxxx/ --- .../bindings/pci/amd,versal2-mdb-host.yaml | 22 +++++++++++++++++++ 1 file changed, 22 insertions(+) diff --git a/Documentation/devicetree/bindings/pci/amd,versal2-mdb-host.yaml b/Documentation/devicetree/bindings/pci/amd,versal2-mdb-host.yaml index 43dc2585c237..421e1116ae7e 100644 --- a/Documentation/devicetree/bindings/pci/amd,versal2-mdb-host.yaml +++ b/Documentation/devicetree/bindings/pci/amd,versal2-mdb-host.yaml @@ -71,6 +71,17 @@ properties: - "#address-cells" - "#interrupt-cells" +patternProperties: + '^pcie@[0-2],0$': + type: object + $ref: /schemas/pci/pci-pci-bridge.yaml# + + properties: + reg: + maxItems: 1 + + unevaluatedProperties: false + required: - reg - reg-names @@ -87,6 +98,7 @@ examples: - | #include <dt-bindings/interrupt-controller/arm-gic.h> #include <dt-bindings/interrupt-controller/irq.h> + #include <dt-bindings/gpio/gpio.h> soc { #address-cells = <2>; @@ -112,6 +124,16 @@ examples: #size-cells = <2>; #interrupt-cells = <1>; device_type = "pci"; + + pcie@0,0 { + device_type = "pci"; + reg = <0x0 0x0 0x0 0x0 0x0>; + reset-gpios = <&tca6416_u37 7 GPIO_ACTIVE_LOW>; + #address-cells = <3>; + #size-cells = <2>; + ranges; + }; + pcie_intc_0: interrupt-controller { #address-cells = <0>; #interrupt-cells = <1>; -- 2.44.1
