dt-bindings: memory: Convert ingenic,jz4780-nemc.txt to YAML

Convert the ingenic,jz4780-nemc.txt doc file to ingenic,nemc.yaml.

The ingenic,jz4725b-nemc compatible string was added in the process,
with a fallback to ingenic,jz4740-nemc.
Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Signed-off-by: Rob Herring <robh@kernel.org>

Documentation/devicetree/bindings/memory-controllers/ingenic,jz4780-nemc.txt

-* Ingenic JZ4780 NAND/external memory controller (NEMC)
-
-This file documents the device tree bindings for the NEMC external memory
-controller in Ingenic JZ4780
-
-Required properties:
-- compatible: Should be set to one of:
-    "ingenic,jz4740-nemc" (JZ4740)
-    "ingenic,jz4780-nemc" (JZ4780)
-- reg: Should specify the NEMC controller registers location and length.
-- clocks: Clock for the NEMC controller.
-- #address-cells: Must be set to 2.
-- #size-cells: Must be set to 1.
-- ranges: A set of ranges for each bank describing the physical memory layout.
-  Each should specify the following 4 integer values:
-
-    <cs number> 0 <physical address of mapping> <size of mapping>
-
-Each child of the NEMC node describes a device connected to the NEMC.
-
-Required child node properties:
-- reg: Should contain at least one register specifier, given in the following
-  format:
-
-    <cs number> <offset> <size>
-
-  Multiple registers can be specified across multiple banks. This is needed,
-  for example, for packaged NAND devices with multiple dies. Such devices
-  should be grouped into a single node.
-
-Optional child node properties:
-- ingenic,nemc-bus-width: Specifies the bus width in bits. Defaults to 8 bits.
-- ingenic,nemc-tAS: Address setup time in nanoseconds.
-- ingenic,nemc-tAH: Address hold time in nanoseconds.
-- ingenic,nemc-tBP: Burst pitch time in nanoseconds.
-- ingenic,nemc-tAW: Access wait time in nanoseconds.
-- ingenic,nemc-tSTRV: Static memory recovery time in nanoseconds.
-
-If a child node references multiple banks in its "reg" property, the same value
-for all optional parameters will be configured for all banks. If any optional
-parameters are omitted, they will be left unchanged from whatever they are
-configured to when the NEMC device is probed (which may be the reset value as
-given in the hardware reference manual, or a value configured by the boot
-loader).
-
-Example (NEMC node with a NAND child device attached at CS1):
-
-nemc: nemc@13410000 {
-	compatible = "ingenic,jz4780-nemc";
-	reg = <0x13410000 0x10000>;
-
-	#address-cells = <2>;
-	#size-cells = <1>;
-
-	ranges = <1 0 0x1b000000 0x1000000
-		  2 0 0x1a000000 0x1000000
-		  3 0 0x19000000 0x1000000
-		  4 0 0x18000000 0x1000000
-		  5 0 0x17000000 0x1000000
-		  6 0 0x16000000 0x1000000>;
-
-	clocks = <&cgu JZ4780_CLK_NEMC>;
-
-	nand: nand@1 {
-		compatible = "ingenic,jz4780-nand";
-		reg = <1 0 0x1000000>;
-
-		ingenic,nemc-tAS = <10>;
-		ingenic,nemc-tAH = <5>;
-		ingenic,nemc-tBP = <10>;
-		ingenic,nemc-tAW = <15>;
-		ingenic,nemc-tSTRV = <100>;
-
-		...
-	};
-};

Documentation/devicetree/bindings/memory-controllers/ingenic,nemc.yaml

+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/memory-controllers/ingenic,nemc.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Ingenic SoCs NAND / External Memory Controller (NEMC) devicetree bindings
+
+maintainers:
+  - Paul Cercueil <paul@crapouillou.net>
+
+properties:
+  $nodename:
+    pattern: "^memory-controller@[0-9a-f]+$"
+
+  compatible:
+    oneOf:
+      - enum:
+        - ingenic,jz4740-nemc
+        - ingenic,jz4780-nemc
+      - items:
+        - const: ingenic,jz4725b-nemc
+        - const: ingenic,jz4740-nemc
+
+  "#address-cells":
+    const: 2
+
+  "#size-cells":
+    const: 1
+
+  ranges: true
+
+  reg:
+    maxItems: 1
+
+  clocks:
+    maxItems: 1
+
+patternProperties:
+  ".*@[0-9]+$":
+    type: object
+    properties:
+      reg:
+        minItems: 1
+        maxItems: 255
+
+      ingenic,nemc-bus-width:
+        allOf:
+          - $ref: /schemas/types.yaml#/definitions/uint32
+          - enum: [8, 16]
+        description: Specifies the bus width in bits.
+
+      ingenic,nemc-tAS:
+        $ref: /schemas/types.yaml#/definitions/uint32
+        description: Address setup time in nanoseconds.
+
+      ingenic,nemc-tAH:
+        $ref: /schemas/types.yaml#/definitions/uint32
+        description: Address hold time in nanoseconds.
+
+      ingenic,nemc-tBP:
+        $ref: /schemas/types.yaml#/definitions/uint32
+        description: Burst pitch time in nanoseconds.
+
+      ingenic,nemc-tAW:
+        $ref: /schemas/types.yaml#/definitions/uint32
+        description: Address wait time in nanoseconds.
+
+      ingenic,nemc-tSTRV:
+        $ref: /schemas/types.yaml#/definitions/uint32
+        description: Static memory recovery time in nanoseconds.
+
+    required:
+      - reg
+
+required:
+  - compatible
+  - "#address-cells"
+  - "#size-cells"
+  - ranges
+  - reg
+  - clocks
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/clock/jz4780-cgu.h>
+    #include <dt-bindings/gpio/gpio.h>
+    nemc: memory-controller@13410000 {
+      compatible = "ingenic,jz4780-nemc";
+      reg = <0x13410000 0x10000>;
+      #address-cells = <2>;
+      #size-cells = <1>;
+      ranges = <1 0 0x1b000000 0x1000000>,
+         <2 0 0x1a000000 0x1000000>,
+         <3 0 0x19000000 0x1000000>,
+         <4 0 0x18000000 0x1000000>,
+         <5 0 0x17000000 0x1000000>,
+         <6 0 0x16000000 0x1000000>;
+
+      clocks = <&cgu JZ4780_CLK_NEMC>;
+
+      ethernet@6 {
+        compatible = "davicom,dm9000";
+        davicom,no-eeprom;
+
+        pinctrl-names = "default";
+        pinctrl-0 = <&pins_nemc_cs6>;
+
+        reg = <6 0 1>, /* addr */
+              <6 2 1>; /* data */
+
+        ingenic,nemc-tAS = <15>;
+        ingenic,nemc-tAH = <10>;
+        ingenic,nemc-tBP = <20>;
+        ingenic,nemc-tAW = <50>;
+        ingenic,nemc-tSTRV = <100>;
+
+        reset-gpios = <&gpf 12 GPIO_ACTIVE_HIGH>;
+        vcc-supply = <&eth0_power>;
+
+        interrupt-parent = <&gpe>;
+        interrupts = <19 4>;
+      };
+    };