git.openwrt.org Git - openwrt/openwrt.git/blob

   1 From 377aa0135dc8489312edd3184d143ce3a89ff7ee Mon Sep 17 00:00:00 2001
   2 From: Ansuel Smith <ansuelsmth@gmail.com>
   3 Date: Fri, 12 Mar 2021 07:28:21 +0100
   4 Subject: [PATCH] dt-bindings: mtd: Document use of nvmem-cells compatible
   5
   6 Document nvmem-cells compatible used to treat mtd partitions as a
   7 nvmem provider.
   8
   9 Signed-off-by: Ansuel Smith <ansuelsmth@gmail.com>
  10 Reviewed-by: Rob Herring <robh@kernel.org>
  11 ---
  12  .../bindings/mtd/partitions/nvmem-cells.yaml  | 99 +++++++++++++++++++
  13  1 file changed, 99 insertions(+)
  14  create mode 100644 Documentation/devicetree/bindings/mtd/partitions/nvmem-cells.yaml
  15
  16 --- /dev/null
  17 +++ b/Documentation/devicetree/bindings/mtd/partitions/nvmem-cells.yaml
  18 @@ -0,0 +1,99 @@
  19 +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
  20 +%YAML 1.2
  21 +---
  22 +$id: http://devicetree.org/schemas/mtd/partitions/nvmem-cells.yaml#
  23 +$schema: http://devicetree.org/meta-schemas/core.yaml#
  24 +
  25 +title: Nvmem cells
  26 +
  27 +description: |
  28 +  Any partition containing the compatible "nvmem-cells" will register as a
  29 +  nvmem provider.
  30 +  Each direct subnodes represents a nvmem cell following the nvmem binding.
  31 +  Nvmem binding to declare nvmem-cells can be found in:
  32 +  Documentation/devicetree/bindings/nvmem/nvmem.yaml
  33 +
  34 +maintainers:
  35 +  - Ansuel Smith <ansuelsmth@gmail.com>
  36 +
  37 +allOf:
  38 +  - $ref: /schemas/nvmem/nvmem.yaml#
  39 +
  40 +properties:
  41 +  compatible:
  42 +    const: nvmem-cells
  43 +
  44 +required:
  45 +  - compatible
  46 +
  47 +additionalProperties: true
  48 +
  49 +examples:
  50 +  - |
  51 +    partitions {
  52 +      compatible = "fixed-partitions";
  53 +      #address-cells = <1>;
  54 +      #size-cells = <1>;
  55 +
  56 +      /* ... */
  57 +
  58 +      };
  59 +      art: art@1200000 {
  60 +        compatible = "nvmem-cells";
  61 +        reg = <0x1200000 0x0140000>;
  62 +        label = "art";
  63 +        read-only;
  64 +        #address-cells = <1>;
  65 +        #size-cells = <1>;
  66 +
  67 +        macaddr_gmac1: macaddr_gmac1@0 {
  68 +          reg = <0x0 0x6>;
  69 +        };
  70 +
  71 +        macaddr_gmac2: macaddr_gmac2@6 {
  72 +          reg = <0x6 0x6>;
  73 +        };
  74 +
  75 +        pre_cal_24g: pre_cal_24g@1000 {
  76 +          reg = <0x1000 0x2f20>;
  77 +        };
  78 +
  79 +        pre_cal_5g: pre_cal_5g@5000{
  80 +          reg = <0x5000 0x2f20>;
  81 +        };
  82 +      };
  83 +  - |
  84 +    partitions {
  85 +        compatible = "fixed-partitions";
  86 +        #address-cells = <1>;
  87 +        #size-cells = <1>;
  88 +
  89 +        partition@0 {
  90 +            label = "bootloader";
  91 +            reg = <0x000000 0x100000>;
  92 +            read-only;
  93 +        };
  94 +
  95 +        firmware@100000 {
  96 +            compatible = "brcm,trx";
  97 +            label = "firmware";
  98 +            reg = <0x100000 0xe00000>;
  99 +        };
 100 +
 101 +        calibration@f00000 {
 102 +            compatible = "nvmem-cells";
 103 +            label = "calibration";
 104 +            reg = <0xf00000 0x100000>;
 105 +            ranges = <0 0xf00000 0x100000>;
 106 +            #address-cells = <1>;
 107 +            #size-cells = <1>;
 108 +
 109 +            wifi0@0 {
 110 +                reg = <0x000000 0x080000>;
 111 +            };
 112 +
 113 +            wifi1@80000 {
 114 +                reg = <0x080000 0x080000>;
 115 +            };
 116 +        };
 117 +    };