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X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 11 Jul 2025 05:24:16.8875 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: e80b4ac3-b143-4d60-85f2-08ddc03b2e53 X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=3dd8961f-e488-4e60-8e11-a82d994e183d;Ip=[165.204.84.17];Helo=[SATLEXMB03.amd.com] X-MS-Exchange-CrossTenant-AuthSource: BN3PEPF0000B06F.namprd21.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: PH7PR12MB9151 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 Reviewed-by: Rob Herring (Arm) --- 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@amd.com/ v3 https://lore.kernel.org/r/20250618080931.2472366-1-sai.krishna.musham@amd.com/ v2 https://lore.kernel.org/r/20250429090046.1512000-1-sai.krishna.musham@amd.com/ v1 https://lore.kernel.org/r/20250326041507.98232-1-sai.krishna.musham@amd.com/ --- .../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 #include + #include 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