dt-bindings: ufs: mediatek,ufs: convert to dtschema

Convert the Mediatek Universal Flash Storage (UFS) Controller to DT
schema format.

Signed-off-by: Krzysztof Kozlowski <[e-mail]>
Reviewed-by: Rob Herring <[e-mail]>
Signed-off-by: Rob Herring <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]

Documentation/devicetree/bindings/ufs/mediatek,ufs.yaml

···
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/ufs/mediatek,ufs.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Mediatek Universal Flash Storage (UFS) Controller
+
+maintainers:
+  - Stanley Chu <[e-mail]>
+
+allOf:
+  - $ref: ufs-common.yaml
+
+properties:
+  compatible:
+    enum:
+      - mediatek,mt8183-ufshci
+      - mediatek,mt8192-ufshci
+
+  clocks:
+    maxItems: 1
+
+  clock-names:
+    items:
+      - const: ufs
+
+  phys:
+    maxItems: 1
+
+  reg:
+    maxItems: 1
+
+  vcc-supply: true
+
+required:
+  - compatible
+  - clocks
+  - clock-names
+  - phys
+  - reg
+  - vcc-supply
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/clock/mt8183-clk.h>
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+
+    soc {
+        #address-cells = <2>;
+        #size-cells = <2>;
+
+        ufs@ff3c0000 {
+            compatible = "mediatek,mt8183-ufshci";
+            reg = <0 0x11270000 0 0x2300>;
+            interrupts = <GIC_SPI 104 IRQ_TYPE_LEVEL_LOW>;
+            phys = <&ufsphy>;
+
+            clocks = <&infracfg_ao CLK_INFRA_UFS>;
+            clock-names = "ufs";
+            freq-table-hz = <0 0>;
+
+            vcc-supply = <&mt_pmic_vemc_ldo_reg>;
+        };
+    };

Documentation/devicetree/bindings/ufs/ufs-mediatek.txt

···
-* Mediatek Universal Flash Storage (UFS) Host Controller
-
-UFS nodes are defined to describe on-chip UFS hardware macro.
-Each UFS Host Controller should have its own node.
-
-To bind UFS PHY with UFS host controller, the controller node should
-contain a phandle reference to UFS M-PHY node.
-
-Required properties for UFS nodes:
-- compatible         : Compatible list, contains the following controller:
-                       "mediatek,mt8183-ufshci" for MediaTek UFS host controller
-                       present on MT8183 chipsets.
-                       "mediatek,mt8192-ufshci" for MediaTek UFS host controller
-                       present on MT8192 chipsets.
-- reg                : Address and length of the UFS register set.
-- phys               : phandle to m-phy.
-- clocks             : List of phandle and clock specifier pairs.
-- clock-names        : List of clock input name strings sorted in the same
-                       order as the clocks property. "ufs" is mandatory.
-                       "ufs": ufshci core control clock.
-- freq-table-hz      : Array of <min max> operating frequencies stored in the same
-                       order as the clocks property. If this property is not
-                       defined or a value in the array is "0" then it is assumed
-                       that the frequency is set by the parent clock or a
-                       fixed rate clock source.
-- vcc-supply         : phandle to VCC supply regulator node.
-
-Example:
-
-	ufsphy: phy@11fa0000 {
-		...
-	};
-
-	ufshci@11270000 {
-		compatible = "mediatek,mt8183-ufshci";
-		reg = <0 0x11270000 0 0x2300>;
-		interrupts = <GIC_SPI 104 IRQ_TYPE_LEVEL_LOW>;
-		phys = <&ufsphy>;
-
-		clocks = <&infracfg_ao INFRACFG_AO_UFS_CG>;
-		clock-names = "ufs";
-		freq-table-hz = <0 0>;
-
-		vcc-supply = <&mt_pmic_vemc_ldo_reg>;
-	};