[PATCH v5 1/2] dt-bindings: phy: intel-emmc-phy: Add YAML schema for LGM eMMC PHY

[Ramuthevar,Vadivel MuruganX]

From: Ramuthevar Vadivel Murugan <vadivel.muruganx.ramuthevar@xxxxxxxxxxxxxxx>

Add a YAML schema to use the host controller driver with the
eMMC PHY on Intel's Lightning Mountain SoC.

Signed-off-by: Ramuthevar Vadivel Murugan <vadivel.muruganx.ramuthevar@xxxxxxxxxxxxxxx>
---
changes in v5:
  - earlier Review-by tag given by Rob
  - rework done with syscon parent node.

changes in v4:
  - As per Rob's review: validate 5.2 and 5.3
  - drop unrelated items.

changes in v3:
  - resolve 'make dt_binding_check' warnings

changes in v2:
  As per Rob Herring review comments, the following updates
 - change GPL-2.0 -> (GPL-2.0-only OR BSD-2-Clause)
 - filename is the compatible string plus .yaml
 - LGM: Lightning Mountain
 - update maintainer
 - add intel,syscon under property list
 - keep one example instead of two
---
 .../bindings/phy/intel,lgm-emmc-phy.yaml           | 69 ++++++++++++++++++++++
 1 file changed, 69 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/phy/intel,lgm-emmc-phy.yaml

diff --git a/Documentation/devicetree/bindings/phy/intel,lgm-emmc-phy.yaml b/Documentation/devicetree/bindings/phy/intel,lgm-emmc-phy.yaml
new file mode 100644
index 000000000000..8f6ac8b3da42
--- /dev/null
+++ b/Documentation/devicetree/bindings/phy/intel,lgm-emmc-phy.yaml
@@ -0,0 +1,69 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/phy/intel,lgm-emmc-phy.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Intel Lightning Mountain(LGM) eMMC PHY Device Tree Bindings
+
+maintainers:
+  - Ramuthevar Vadivel Murugan <vadivel.muruganx.ramuthevar@xxxxxxxxxxxxxxx>
+
+description: Bindings for eMMC PHY on Intel's Lightning Mountain SoC, syscon
+  node is used to reference the base address of eMMC phy registers.
+
+select:
+  properties:
+    compatible:
+      contains:
+        const: intel,lgm-syscon
+
+    reg:
+      maxItems: 1
+
+  required:
+    - compatible
+    - reg
+
+properties:
+  "#phy-cells":
+    const: 0
+
+  compatible:
+    contains:
+      const: intel,lgm-emmc-phy
+
+  reg:
+    maxItems: 1
+
+  clocks:
+    maxItems: 1
+
+  clock-names:
+    maxItems: 1
+
+required:
+  - "#phy-cells"
+  - compatible
+  - reg
+  - clocks
+  - clock-names
+
+examples:
+  - |
+    sysconf: chiptop@e0200000 {
+      compatible = "intel,lgm-syscon";
+      reg = <0xe0200000 0x100>;
+
+      emmc-phy: emmc-phy {
+        compatible = "intel,lgm-emmc-phy";
+        reg = <0x00a8 0x4>,
+              <0x00ac 0x4>,
+              <0x00b0 0x4>,
+              <0x00b4 0x4>;
+        clocks = <&emmc>;
+        clock-names = "emmcclk";
+        #phy-cells = <0>;
+      };
+    };
+...
-- 
2.11.0