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charset="utf-8" Add the "amd,versal2-cpm6-host" compatible string for AMD Versal2 CPM6 host bridge. CPM6 integrates a Synopsys DesignWare PCIe Root Port controller derived from the same IP family as the existing MDB host bridge, but uses a newer IP revision, supports PCIe Gen6 operation up to 64 GT/s per lane and has differences in register layout. A separate compatible string is required to accurately describe the CPM6 hardware and allow software to distinguish it from the MDB-based host bridge. Signed-off-by: Sai Krishna Musham --- .../devicetree/bindings/pci/amd,versal2-mdb-host.yaml | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/Documentation/devicetree/bindings/pci/amd,versal2-mdb-host.yam= l b/Documentation/devicetree/bindings/pci/amd,versal2-mdb-host.yaml index 406c15e1dee1..be5a77908d24 100644 --- a/Documentation/devicetree/bindings/pci/amd,versal2-mdb-host.yaml +++ b/Documentation/devicetree/bindings/pci/amd,versal2-mdb-host.yaml @@ -15,7 +15,9 @@ allOf: =20 properties: compatible: - const: amd,versal2-mdb-host + enum: + - amd,versal2-mdb-host + - amd,versal2-cpm6-host =20 reg: items: --=20 2.44.4 From nobody Sun Jun 14 12:44:33 2026 Received: from BL2PR02CU003.outbound.protection.outlook.com (mail-eastusazon11011000.outbound.protection.outlook.com [52.101.52.0]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id A76EB36C0DC; Thu, 2 Apr 2026 18:00:59 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; 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charset="utf-8" Add "amd,versal2-cpm6-host" to the OF match table of the AMD MDB PCIe host controller driver. The Versal2 CPM6 host controller is DesignWare-based and supports PCIe Gen6 operation at up to 64 GT/s per lane. It is currently handled by the same driver and match data (NULL) as the existing MDB host controller, but CPM6 uses a newer IP revision and differs in legacy INTx register offsets. Use a separate compatible to allow CPM6-specific handling once legacy interrupt support is validated. Signed-off-by: Sai Krishna Musham --- drivers/pci/controller/dwc/pcie-amd-mdb.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/pci/controller/dwc/pcie-amd-mdb.c b/drivers/pci/contro= ller/dwc/pcie-amd-mdb.c index 3c6e837465bb..325bf7aad657 100644 --- a/drivers/pci/controller/dwc/pcie-amd-mdb.c +++ b/drivers/pci/controller/dwc/pcie-amd-mdb.c @@ -511,6 +511,9 @@ static const struct of_device_id amd_mdb_pcie_of_match[= ] =3D { { .compatible =3D "amd,versal2-mdb-host", }, + { + .compatible =3D "amd,versal2-cpm6-host", + }, {}, }; =20 --=20 2.44.4