dt-bindings: mmc: convert amlogic,meson-mx-sdio.txt to dtschema

Convert the Amlogic Meson6, Meson8 and Meson8b SDIO/MMC controller
bindings to dt-schema.

Reviewed-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Message-ID: <20241128-topic-amlogic-arm32-upstream-bindings-fixes-convert-meson-mx-sdio-v4-5-11d9f9200a59@linaro.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>

Author: superna9999

Documentation/devicetree/bindings/mmc/amlogic,meson-mx-sdio.txt

@@ -0,0 +1,94 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/mmc/amlogic,meson-mx-sdio.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Amlogic Meson6, Meson8 and Meson8b SDIO/MMC controller
+
+description: |
+  The highspeed MMC host controller on Amlogic SoCs provides an interface
+  for MMC, SD, SDIO and SDHC types of memory cards.
+
+  Supported maximum speeds are the ones of the eMMC standard 4.41 as well
+  as the speed of SD standard 2.0.
+
+  The hardware provides an internal "mux" which allows up to three slots
+  to be controlled. Only one slot can be accessed at a time.
+
+maintainers:
+  - Neil Armstrong <neil.armstrong@linaro.org>
+
+properties:
+  compatible:
+    items:
+      - enum:
+          - amlogic,meson8-sdio
+          - amlogic,meson8b-sdio
+      - const: amlogic,meson-mx-sdio
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  clocks:
+    maxItems: 2
+
+  clock-names:
+    items:
+      - const: core
+      - const: clkin
+
+  "#address-cells":
+    const: 1
+
+  "#size-cells":
+    const: 0
+
+patternProperties:
+  "slot@[0-2]$":
+    $ref: mmc-slot.yaml#
+    description:
+      A node for each slot provided by the MMC controller
+
+    properties:
+      reg:
+        enum: [0, 1, 2]
+
+      bus-width:
+        enum: [1, 4]
+
+    unevaluatedProperties: false
+
+required:
+  - compatible
+  - reg
+  - interrupts
+  - clocks
+  - clock-names
+  - "#address-cells"
+  - "#size-cells"
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/irq.h>
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+    mmc@c1108c20 {
+        compatible = "amlogic,meson8-sdio", "amlogic,meson-mx-sdio";
+        reg = <0xc1108c20 0x20>;
+        interrupts = <GIC_SPI 28 IRQ_TYPE_EDGE_RISING>;
+        clocks = <&clk_core>, <&clk_in>;
+        clock-names = "core", "clkin";
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        slot@1 {
+            compatible = "mmc-slot";
+            reg = <1>;
+            bus-width = <4>;
+        };
+    };