dt-bindings: mmc: Convert sdhci-fujitsu to JSON schema

Convert the Fujitsu SDHCI controller IP binding to DT schema format,
and add resets property as optional to support reset control.
Signed-off-by: Kunihiko Hayashi <hayashi.kunihiko@socionext.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20221111081033.3813-2-hayashi.kunihiko@socionext.comSigned-off-by: Ulf Hansson <ulf.hansson@linaro.org>

Documentation/devicetree/bindings/mmc/fujitsu,sdhci-fujitsu.yaml

+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/mmc/fujitsu,sdhci-fujitsu.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Fujitsu SDHCI controller (F_SDH30)
+
+maintainers:
+  - Kunihiko Hayashi <hayashi.kunihiko@socionext.com>
+
+allOf:
+  - $ref: mmc-controller.yaml#
+
+properties:
+  compatible:
+    const: fujitsu,mb86s70-sdhci-3.0
+
+  reg:
+    maxItems: 1
+
+  clocks:
+    maxItems: 2
+
+  clock-names:
+    items:
+      - const: iface
+      - const: core
+
+  resets:
+    maxItems: 1
+
+  fujitsu,cmd-dat-delay-select:
+    type: boolean
+    description: |
+      Indicating that this host requires the CMD_DAT_DELAY control to be enabled
+
+unevaluatedProperties: false
+
+required:
+  - compatible
+  - reg
+  - clocks
+  - clock-names
+
+examples:
+  - |
+    sdhci1: mmc@36600000 {
+        compatible = "fujitsu,mb86s70-sdhci-3.0";
+        reg = <0x36600000 0x1000>;
+        bus-width = <4>;
+        vqmmc-supply = <&vccq_sdhci1>;
+        clocks = <&clock 2 2 0>, <&clock 2 3 0>;
+        clock-names = "iface", "core";
+    };

Documentation/devicetree/bindings/mmc/sdhci-fujitsu.txt

-* Fujitsu SDHCI controller
-
-This file documents differences between the core properties in mmc.txt
-and the properties used by the sdhci_f_sdh30 driver.
-
-Required properties:
-- compatible: "fujitsu,mb86s70-sdhci-3.0"
-- clocks: Must contain an entry for each entry in clock-names. It is a
-  list of phandles and clock-specifier pairs.
-  See ../clocks/clock-bindings.txt for details.
-- clock-names: Should contain the following two entries:
-	"iface" - clock used for sdhci interface
-	"core"  - core clock for sdhci controller
-
-Optional properties:
-- vqmmc-supply: phandle to the regulator device tree node, mentioned
-  as the VCCQ/VDD_IO supply in the eMMC/SD specs.
-- fujitsu,cmd-dat-delay-select: boolean property indicating that this host
-  requires the CMD_DAT_DELAY control to be enabled.
-
-Example:
-
-	sdhci1: mmc@36600000 {
-		compatible = "fujitsu,mb86s70-sdhci-3.0";
-		reg = <0 0x36600000 0x1000>;
-		interrupts = <0 172 0x4>,
-			     <0 173 0x4>;
-		bus-width = <4>;
-		vqmmc-supply = <&vccq_sdhci1>;
-		clocks = <&clock 2 2 0>, <&clock 2 3 0>;
-		clock-names = "iface", "core";
-	};