From f14ac41b785f231573fe935a2eb5aaf737447f0c Mon Sep 17 00:00:00 2001
From: Lorenzo Bianconi <lorenzo@kernel.org>
Date: Tue, 5 Apr 2022 21:57:46 +0200
Subject: [PATCH] dt-bindings: arm: mediatek: document the pcie mirror node on
 MT7622

This patch adds the pcie mirror document bindings for MT7622 SoC.
The feature is used for intercepting PCIe MMIO access for the WED core
Add related info in mediatek-net bindings.

Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
 .../mediatek/mediatek,mt7622-pcie-mirror.yaml | 42 +++++++++++++++++++
 .../devicetree/bindings/net/mediatek-net.txt  |  2 +
 2 files changed, 44 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/arm/mediatek/mediatek,mt7622-pcie-mirror.yaml

diff --git a/Documentation/devicetree/bindings/arm/mediatek/mediatek,mt7622-pcie-mirror.yaml b/Documentation/devicetree/bindings/arm/mediatek/mediatek,mt7622-pcie-mirror.yaml
new file mode 100644
index 000000000000..9fbeb626ab23
--- /dev/null
+++ b/Documentation/devicetree/bindings/arm/mediatek/mediatek,mt7622-pcie-mirror.yaml
@@ -0,0 +1,42 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: "http://devicetree.org/schemas/arm/mediatek/mediatek,mt7622-pcie-mirror.yaml#"
+$schema: "http://devicetree.org/meta-schemas/core.yaml#"
+
+title: MediaTek PCIE Mirror Controller for MT7622
+
+maintainers:
+  - Lorenzo Bianconi <lorenzo@kernel.org>
+  - Felix Fietkau <nbd@nbd.name>
+
+description:
+  The mediatek PCIE mirror provides a configuration interface for PCIE
+  controller on MT7622 soc.
+
+properties:
+  compatible:
+    items:
+      - enum:
+          - mediatek,mt7622-pcie-mirror
+      - const: syscon
+
+  reg:
+    maxItems: 1
+
+required:
+  - compatible
+  - reg
+
+additionalProperties: false
+
+examples:
+  - |
+    soc {
+      #address-cells = <2>;
+      #size-cells = <2>;
+      pcie_mirror: pcie-mirror@10000400 {
+        compatible = "mediatek,mt7622-pcie-mirror", "syscon";
+        reg = <0 0x10000400 0 0x10>;
+      };
+    };
diff --git a/Documentation/devicetree/bindings/net/mediatek-net.txt b/Documentation/devicetree/bindings/net/mediatek-net.txt
index 1c8dc44bbb52..f18d70189375 100644
--- a/Documentation/devicetree/bindings/net/mediatek-net.txt
+++ b/Documentation/devicetree/bindings/net/mediatek-net.txt
@@ -48,6 +48,8 @@ Optional properties:
 	various clocks and reset to the system.
 - mediatek,wed: a list of phandles to wireless ethernet dispatch nodes for
 	MT7622 SoC.
+- mediatek,pcie-mirror: phandle to the mediatek pcie-mirror controller for
+	MT7622 SoC.
 
 * Ethernet MAC node