linux-kernel - [PATCH v2 1/2] dt-bindings: PCI: mediatek-gen3: Add support for controlling power and reset

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Date:   Mon, 6 Mar 2023 14:40:58 +0800
From:   Jian Yang <jian.yang@...iatek.com>
To:     Bjorn Helgaas <bhelgaas@...gle.com>,
        Lorenzo Pieralisi <lpieralisi@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Jianjun Wang <jianjun.wang@...iatek.com>,
        Rob Herring <robh@...nel.org>
CC:     <linux-pci@...r.kernel.org>, <linux-mediatek@...ts.infradead.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <Project_Global_Chrome_Upstream_Group@...iatek.com>,
        <jian.yang@...iatek.com>, <chuanjia.liu@...iatek.com>,
        <jieyy.yang@...iatek.com>, <qizhong.cheng@...iatek.com>
Subject: [PATCH v2 1/2] dt-bindings: PCI: mediatek-gen3: Add support for controlling power and reset

From: "jian.yang" <jian.yang@...iatek.com>

Add new properties to support control power supplies and reset pin of
a downstream component.

Signed-off-by: jian.yang <jian.yang@...iatek.com>
---
 .../bindings/pci/mediatek-pcie-gen3.yaml        | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/Documentation/devicetree/bindings/pci/mediatek-pcie-gen3.yaml b/Documentation/devicetree/bindings/pci/mediatek-pcie-gen3.yaml
index 7e8c7a2a5f9b..a59f9d0a782e 100644
--- a/Documentation/devicetree/bindings/pci/mediatek-pcie-gen3.yaml
+++ b/Documentation/devicetree/bindings/pci/mediatek-pcie-gen3.yaml
@@ -84,6 +84,23 @@ properties:
     items:
       enum: [ phy, mac ]
 
+  pcie1v8-supply:
+    description:
+      The regulator phandle that provides 1.8V power to a downstream component.
+
+  pcie3v3-supply:
+    description:
+      The regulator phandle that provides 3.3V power to a downstream component.
+
+  pcie12v-supply:
+    description:
+      The regulator phandle that provides 12V power to a downstream component.
+
+  dsc-reset-gpios:
+    description:
+      The extra reset pin other than PERST# required by a downstream component.
+    maxItems: 1
+
   clocks:
     minItems: 4
     maxItems: 6
-- 
2.18.0