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Message-Id: <20240201-pme_msg-v2-5-6767052fe6a4@nxp.com>
Date: Thu, 01 Feb 2024 11:13:29 -0500
From: Frank Li <Frank.Li@....com>
To: Bjorn Helgaas <bhelgaas@...gle.com>, Jingoo Han <jingoohan1@...il.com>, 
 Gustavo Pimentel <gustavo.pimentel@...opsys.com>, 
 Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>, 
 Lorenzo Pieralisi <lpieralisi@...nel.org>, 
 Krzysztof WilczyƄski <kw@...ux.com>, 
 Rob Herring <robh@...nel.org>, 
 Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>, 
 Conor Dooley <conor+dt@...nel.org>, imx@...ts.linux.dev
Cc: linux-pci@...r.kernel.org, linux-kernel@...r.kernel.org, 
 devicetree@...r.kernel.org, Frank Li <Frank.Li@....com>
Subject: [PATCH v2 5/6] dt-bindings: PCI: dwc: Add 'msg" register region

Add an outbound iATU-capable memory-region which will be used to send PCIe
message (such as PME_Turn_Off) to peripheral. So all platforms can use
common method to send out PME_Turn_Off message by using one outbound iATU.

Signed-off-by: Frank Li <Frank.Li@....com>
---
 Documentation/devicetree/bindings/pci/snps,dw-pcie.yaml | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/Documentation/devicetree/bindings/pci/snps,dw-pcie.yaml b/Documentation/devicetree/bindings/pci/snps,dw-pcie.yaml
index 022055edbf9e6..25a5420a9ce1e 100644
--- a/Documentation/devicetree/bindings/pci/snps,dw-pcie.yaml
+++ b/Documentation/devicetree/bindings/pci/snps,dw-pcie.yaml
@@ -101,6 +101,10 @@ properties:
             Outbound iATU-capable memory-region which will be used to access
             the peripheral PCIe devices configuration space.
           const: config
+        - description:
+            Outbound iATU-capable memory-region which will be used to send
+            PCIe message (such as PME_Turn_Off) to peripheral.
+          const: msg
         - description:
             Vendor-specific CSR names. Consider using the generic names above
             for new bindings.

-- 
2.34.1


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