xref: /kernel/linux/linux-6.6/Documentation/devicetree/bindings/mtd/ti,gpmc-onenand.yaml

# 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:
  $nodename:
    pattern: "^onenand@[0-9],[0,9]$"

  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>;
        };
      };
    };