linux-kernel - [PATCH V2 2/4] dt-bindings: imx6q-pcie: Add wake-gpios property

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Message-Id: <20231213092850.1706042-3-sherry.sun@nxp.com>
Date:   Wed, 13 Dec 2023 17:28:48 +0800
From:   Sherry Sun <sherry.sun@....com>
To:     hongxing.zhu@....com, l.stach@...gutronix.de,
        lpieralisi@...nel.org, kw@...ux.com, robh@...nel.org,
        bhelgaas@...gle.com, krzysztof.kozlowski+dt@...aro.org,
        conor+dt@...nel.org, shawnguo@...nel.org, s.hauer@...gutronix.de,
        kernel@...gutronix.de, festevam@...il.com
Cc:     linux-imx@....com, linux-pci@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH V2 2/4] dt-bindings: imx6q-pcie: Add wake-gpios property

Add wake-gpios property that can be used to wakeup the host
processor.

Signed-off-by: Sherry Sun <sherry.sun@....com>
Reviewed-by: Richard Zhu <hongxing.zhu@....com>
---
 Documentation/devicetree/bindings/pci/fsl,imx6q-pcie.yaml | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/Documentation/devicetree/bindings/pci/fsl,imx6q-pcie.yaml b/Documentation/devicetree/bindings/pci/fsl,imx6q-pcie.yaml
index 81bbb8728f0f..fba757d937e1 100644
--- a/Documentation/devicetree/bindings/pci/fsl,imx6q-pcie.yaml
+++ b/Documentation/devicetree/bindings/pci/fsl,imx6q-pcie.yaml
@@ -72,6 +72,12 @@ properties:
       L=operation state) (optional required).
     type: boolean
 
+  wake-gpios:
+    description: If present this property specifies WAKE# sideband signaling
+      to implement wakeup functionality. This is an input GPIO pin for the Root
+      Port mode here. Host drivers will wakeup the host using the IRQ
+      corresponding to the passed GPIO.
+
 required:
   - compatible
   - reg
-- 
2.34.1