[PATCH v3 1/2] dt-bindings: phy: airoha: Document support for AN7583 Gen3 PCIe PHY

[Christian Marangi]

Document support for AN7583 PCIe PHY used to make the Gen3 PCIe port
work. Add the required register to configure the PCIe PHY and provide an
example for it.

Signed-off-by: Christian Marangi <ansuelsmth at gmail.com>
---
 .../phy/airoha,an7583-pcie-gen3-phy.yaml      | 65 +++++++++++++++++++
 1 file changed, 65 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/phy/airoha,an7583-pcie-gen3-phy.yaml

diff --git a/Documentation/devicetree/bindings/phy/airoha,an7583-pcie-gen3-phy.yaml b/Documentation/devicetree/bindings/phy/airoha,an7583-pcie-gen3-phy.yaml
new file mode 100644
index 000000000000..a8ec5ac781cc
--- /dev/null
+++ b/Documentation/devicetree/bindings/phy/airoha,an7583-pcie-gen3-phy.yaml
@@ -0,0 +1,65 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/phy/airoha,an7583-pcie-gen3-phy.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Airoha AN7583 PCI-Express PHY
+
+maintainers:
+  - Christian Marangi <ansuelsmth at gmail.com>
+
+description:
+  The PCIe PHY supports physical layer functionality for PCIe Gen2/Gen3 port.
+
+properties:
+  compatible:
+    const: airoha,an7583-pcie-gen3-phy
+
+  reg:
+    items:
+      - description: PCIE G3 analog base address
+      - description: PCIE G3 PMA base address
+      - description: PCIE detection time base address
+      - description: PCIE Rx AEQ base address
+
+  reg-names:
+    items:
+      - const: g3-ana
+      - const: g3-pma
+      - const: xr-dtime
+      - const: rx-aeq
+
+  phys:
+    items:
+      - description: phandle to QPHY phy for Gen2 support
+
+  "#phy-cells":
+    const: 0
+
+required:
+  - compatible
+  - reg
+  - reg-names
+  - phys
+  - "#phy-cells"
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/phy/phy.h>
+
+    phy at 1fc7f000 {
+        compatible = "airoha,an7583-pcie-gen3-phy";
+        reg = <0x1fc7f000 0x1000>,
+              <0x1fc7e000 0x1000>,
+              <0x1fc30044 0x4>,
+              <0x1fc35030 0x4>;
+        reg-names = "g3-ana", "g3-pma",
+                    "xr-dtime", "rx-aeq";
+
+        phys = <&pcie1_phy PHY_TYPE_PCIE>;
+
+        #phy-cells = <0>;
+    };
-- 
2.53.0