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X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 24 Feb 2025 06:31:03.6558 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 31240d0e-3e55-4034-a6b0-08dd549ccff4 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: BN3PEPF0000B36F.namprd21.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: SA1PR12MB7126 Introduce `reset-gpios` property to enable GPIO-based control of the PCIe RP PERST# signal, generating assert and deassert signals. Signed-off-by: Sai Krishna Musham --- This patch depends on the following patch series. https://lore.kernel.org/all/20250217072713.635643-2-thippeswamy.havalige@amd.com/ --- .../devicetree/bindings/pci/xilinx-versal-cpm.yaml | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/Documentation/devicetree/bindings/pci/xilinx-versal-cpm.yaml b/Documentation/devicetree/bindings/pci/xilinx-versal-cpm.yaml index b63a759ec2d7..293ed36d0cea 100644 --- a/Documentation/devicetree/bindings/pci/xilinx-versal-cpm.yaml +++ b/Documentation/devicetree/bindings/pci/xilinx-versal-cpm.yaml @@ -33,6 +33,9 @@ properties: - const: cpm_csr minItems: 2 + reset-gpios: + description: GPIO used as PERST# signal. Please refer to pci.txt. + interrupts: maxItems: 1 @@ -63,6 +66,7 @@ properties: required: - reg - reg-names + - reset-gpios - "#interrupt-cells" - interrupts - interrupt-map @@ -99,6 +103,7 @@ examples: reg = <0x0 0xfca10000 0x0 0x1000>, <0x6 0x00000000 0x0 0x10000000>; reg-names = "cpm_slcr", "cfg"; + reset-gpios = <&gpio1 38 0x01>; pcie_intc_0: interrupt-controller { #address-cells = <0>; #interrupt-cells = <1>; @@ -127,6 +132,7 @@ examples: <0x06 0x00000000 0x00 0x1000000>, <0x00 0xfce20000 0x00 0x1000000>; reg-names = "cpm_slcr", "cfg", "cpm_csr"; + reset-gpios = <&gpio1 38 0x01>; pcie_intc_1: interrupt-controller { #address-cells = <0>;