dt-bindings: mtd: ti,gpmc-onenand: Convert to yaml

Device tree bindings for GPMC connected OneNANDs

GPMC connected OneNAND (found on OMAP boards) are represented as child nodes of

the GPMC controller with a name of "onenand".

All timing relevant properties as well as generic gpmc child properties are

explained in a separate documents - please refer to

Documentation/devicetree/bindings/memory-controllers/omap-gpmc.txt

Required properties:

 - compatible:		"ti,omap2-onenand"

 - reg:			The CS line the peripheral is connected to

 - gpmc,device-width:	Width of the ONENAND device connected to the GPMC

			in bytes. Must be 1 or 2.

Optional properties:

 - int-gpios:		GPIO specifier for the INT pin.

For inline partition table parsing (optional):

 - #address-cells: should be set to 1

 - #size-cells: should be set to 1

Example for an OMAP3430 board:

	gpmc: gpmc@6e000000 {

		compatible = "ti,omap3430-gpmc";

		ti,hwmods = "gpmc";

		reg = <0x6e000000 0x1000000>;

		interrupts = <20>;

		gpmc,num-cs = <8>;

		gpmc,num-waitpins = <4>;

		#address-cells = <2>;

		#size-cells = <1>;

		onenand@0 {

			compatible = "ti,omap2-onenand";

			reg = <0 0 0>; /* CS0, offset 0 */

			gpmc,device-width = <2>;

			#address-cells = <1>;

			#size-cells = <1>;

			/* partitions go here */

		};

	};

# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)

%YAML 1.2

---

$id: http://devicetree.org/schemas/mtd/ti,gpmc-onenand.yaml#

$schema: http://devicetree.org/meta-schemas/core.yaml#

title: OneNAND over Texas Instruments GPMC bus.

maintainers:

  - Tony Lindgren <tony@atomide.com>

  - Roger Quadros <rogerq@kernel.org>

description:

  GPMC connected OneNAND (found on OMAP boards) are represented

  as child nodes of the GPMC controller.

properties:

  compatible:

    const: ti,omap2-onenand

  reg:

    items:

      - description: |

          Chip Select number, register offset and size of

          OneNAND register window.

  "#address-cells": true

  "#size-cells": true

  int-gpios:

    description: GPIO specifier for the INT pin.

patternProperties:

  "@[0-9a-f]+$":

    $ref: "/schemas/mtd/partitions/partition.yaml"

allOf:

  - $ref: "/schemas/memory-controllers/ti,gpmc-child.yaml"

required:

  - compatible

  - reg

  - "#address-cells"

  - "#size-cells"

unevaluatedProperties: false

examples:

  - |

    gpmc: memory-controller@6e000000 {

      compatible = "ti,omap3430-gpmc";

      reg = <0x6e000000 0x02d0>;

      interrupts = <20>;

      gpmc,num-cs = <8>;

      gpmc,num-waitpins = <4>;

      clocks = <&l3s_clkctrl>;

      clock-names = "fck";

      #address-cells = <2>;

      #size-cells = <1>;

      ranges = <0 0 0x01000000 0x01000000>,   /* 16 MB for OneNAND */

               <1 0 0x02000000 0x01000000>;   /* 16 MB for smc91c96 */

      onenand@0,0 {

        compatible = "ti,omap2-onenand";

        reg = <0 0 0x20000>;    /* CS0, offset 0, IO size 128K */

        #address-cells = <1>;

        #size-cells = <1>;

        partition@0 {

          label = "bootloader";

          reg = <0x00000000 0x00100000>;

        };

        partition@100000 {

          label = "config";

          reg = <0x00100000 0x002c0000>;

        };

      };

    };