linux-kernel - [PATCH v2 1/2] dt-bindings: PCI: xilinx-cpm: Add compatible string for CPM5 controller 1

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Message-ID: <20240916163124.2223468-2-thippesw@amd.com>
Date: Mon, 16 Sep 2024 22:01:23 +0530
From: Thippeswamy Havalige <thippesw@....com>
To: <manivannan.sadhasivam@...aro.org>, <robh@...nel.org>,
	<linux-pci@...r.kernel.org>, <bhelgaas@...gle.com>,
	<linux-arm-kernel@...ts.infradead.org>, <linux-kernel@...r.kernel.org>,
	<krzk+dt@...nel.org>, <conor+dt@...nel.org>, <devicetree@...r.kernel.org>
CC: <bharat.kumar.gogada@....com>, <michal.simek@....com>,
	<lpieralisi@...nel.org>, <kw@...ux.com>, Thippeswamy Havalige
	<thippesw@....com>
Subject: [PATCH v2 1/2] dt-bindings: PCI: xilinx-cpm: Add compatible string for CPM5 controller 1

The Xilinx Versal Premium series includes the CPM5 block, which supports
two Type-A Root Port controllers operating at Gen5 speed.

This patch adds a compatible string to distinguish between the two CPM5
Root Port controllers. The error interrupt registers and corresponding bits
for Controller 0 and Controller 1 are located at different offsets, making
it necessary to differentiate them.

By using the new compatible string, the driver can properly handle these
platform-specific differences between the controllers.

Signed-off-by: Thippeswamy Havalige <thippesw@....com>
---
changes in v2:
--------------
Modify compatible string to differentiate controller 0 and controller 1
---
 Documentation/devicetree/bindings/pci/xilinx-versal-cpm.yaml | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Documentation/devicetree/bindings/pci/xilinx-versal-cpm.yaml b/Documentation/devicetree/bindings/pci/xilinx-versal-cpm.yaml
index 989fb0fa2577..3783075661e2 100644
--- a/Documentation/devicetree/bindings/pci/xilinx-versal-cpm.yaml
+++ b/Documentation/devicetree/bindings/pci/xilinx-versal-cpm.yaml
@@ -17,6 +17,7 @@ properties:
     enum:
       - xlnx,versal-cpm-host-1.00
       - xlnx,versal-cpm5-host
+      - xlnx,versal-cpm5-host1-1
 
   reg:
     items:
-- 
2.34.1