target/linux/generic/backport-5.4/407-v5.13-0001-dt-bindings-mtd-add-binding-for-Linksys-Northstar-pa.patch

   1 From 2fa7294175c76e1ec568aa75c1891fd908728c8d Mon Sep 17 00:00:00 2001
   2 From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal@milecki.pl>
   3 Date: Fri, 12 Mar 2021 14:49:18 +0100
   4 Subject: [PATCH] dt-bindings: mtd: add binding for Linksys Northstar
   5  partitions
   6 MIME-Version: 1.0
   7 Content-Type: text/plain; charset=UTF-8
   8 Content-Transfer-Encoding: 8bit
   9
  10 Linksys on Broadcom Northstar devices uses fixed flash layout with
  11 multiple firmware partitions.
  12
  13 Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
  14 Reviewed-by: Rob Herring <robh@kernel.org>
  15 Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
  16 Link: https://lore.kernel.org/linux-mtd/20210312134919.7767-1-zajec5@gmail.com
  17 ---
  18  .../mtd/partitions/linksys,ns-partitions.yaml | 74 +++++++++++++++++++
  19  1 file changed, 74 insertions(+)
  20  create mode 100644 Documentation/devicetree/bindings/mtd/partitions/linksys,ns-partitions.yaml
  21
  22 --- /dev/null
  23 +++ b/Documentation/devicetree/bindings/mtd/partitions/linksys,ns-partitions.yaml
  24 @@ -0,0 +1,74 @@
  25 +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
  26 +%YAML 1.2
  27 +---
  28 +$id: http://devicetree.org/schemas/mtd/partitions/linksys,ns-partitions.yaml#
  29 +$schema: http://devicetree.org/meta-schemas/core.yaml#
  30 +
  31 +title: Linksys Northstar partitioning
  32 +
  33 +description: |
  34 +  Linksys devices based on Broadcom Northstar architecture often use two
  35 +  firmware partitions. One is used for regular booting, the other is treated as
  36 +  fallback.
  37 +
  38 +  This binding allows defining all fixed partitions and marking those containing
  39 +  firmware. System can use that information e.g. for booting or flashing
  40 +  purposes.
  41 +
  42 +maintainers:
  43 +  - Rafał Miłecki <rafal@milecki.pl>
  44 +
  45 +properties:
  46 +  compatible:
  47 +    const: linksys,ns-partitions
  48 +
  49 +  "#address-cells":
  50 +    enum: [ 1, 2 ]
  51 +
  52 +  "#size-cells":
  53 +    enum: [ 1, 2 ]
  54 +
  55 +patternProperties:
  56 +  "^partition@[0-9a-f]+$":
  57 +    $ref: "partition.yaml#"
  58 +    properties:
  59 +      compatible:
  60 +        items:
  61 +          - const: linksys,ns-firmware
  62 +          - const: brcm,trx
  63 +    unevaluatedProperties: false
  64 +
  65 +required:
  66 +  - "#address-cells"
  67 +  - "#size-cells"
  68 +
  69 +additionalProperties: false
  70 +
  71 +examples:
  72 +  - |
  73 +    partitions {
  74 +        compatible = "linksys,ns-partitions";
  75 +        #address-cells = <1>;
  76 +        #size-cells = <1>;
  77 +
  78 +        partition@0 {
  79 +            label = "boot";
  80 +            reg = <0x0 0x100000>;
  81 +            read-only;
  82 +        };
  83 +
  84 +        partition@100000 {
  85 +            label = "nvram";
  86 +            reg = <0x100000 0x100000>;
  87 +        };
  88 +
  89 +        partition@200000 {
  90 +            compatible = "linksys,ns-firmware", "brcm,trx";
  91 +            reg = <0x200000 0xf00000>;
  92 +        };
  93 +
  94 +        partition@1100000 {
  95 +            compatible = "linksys,ns-firmware", "brcm,trx";
  96 +            reg = <0x1100000 0xf00000>;
  97 +        };
  98 +    };