target/linux/generic/backport-5.10/402-v5.12-0002-dt-bindings-mtd-add-binding-for-BCM4908-partitions.patch

   1 From 6e9dff6fe3fbc452f16566e4a7e293b0decefdba Mon Sep 17 00:00:00 2001
   2 From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal@milecki.pl>
   3 Date: Thu, 11 Feb 2021 23:04:26 +0100
   4 Subject: [PATCH] dt-bindings: mtd: add binding for BCM4908 partitions
   5 MIME-Version: 1.0
   6 Content-Type: text/plain; charset=UTF-8
   7 Content-Transfer-Encoding: 8bit
   8
   9 BCM4908 uses fixed partitions layout but function of some partitions may
  10 vary. Some devices use multiple firmware partitions and those partitions
  11 should be marked to let system discover their purpose.
  12
  13 Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
  14 Signed-off-by: Richard Weinberger <richard@nod.at>
  15 ---
  16  .../partitions/brcm,bcm4908-partitions.yaml   | 70 +++++++++++++++++++
  17  1 file changed, 70 insertions(+)
  18  create mode 100644 Documentation/devicetree/bindings/mtd/partitions/brcm,bcm4908-partitions.yaml
  19
  20 --- /dev/null
  21 +++ b/Documentation/devicetree/bindings/mtd/partitions/brcm,bcm4908-partitions.yaml
  22 @@ -0,0 +1,70 @@
  23 +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
  24 +%YAML 1.2
  25 +---
  26 +$id: http://devicetree.org/schemas/mtd/partitions/brcm,bcm4908-partitions.yaml#
  27 +$schema: http://devicetree.org/meta-schemas/core.yaml#
  28 +
  29 +title: Broadcom BCM4908 partitioning
  30 +
  31 +description: |
  32 +  Broadcom BCM4908 CFE bootloader supports two firmware partitions. One is used
  33 +  for regular booting, the other is treated as fallback.
  34 +
  35 +  This binding allows defining all fixed partitions and marking those containing
  36 +  firmware. System can use that information e.g. for booting or flashing
  37 +  purposes.
  38 +
  39 +maintainers:
  40 +  - Rafał Miłecki <rafal@milecki.pl>
  41 +
  42 +properties:
  43 +  compatible:
  44 +    const: brcm,bcm4908-partitions
  45 +
  46 +  "#address-cells":
  47 +    enum: [ 1, 2 ]
  48 +
  49 +  "#size-cells":
  50 +    enum: [ 1, 2 ]
  51 +
  52 +patternProperties:
  53 +  "^partition@[0-9a-f]+$":
  54 +    $ref: "partition.yaml#"
  55 +    properties:
  56 +      compatible:
  57 +        const: brcm,bcm4908-firmware
  58 +    unevaluatedProperties: false
  59 +
  60 +required:
  61 +  - "#address-cells"
  62 +  - "#size-cells"
  63 +
  64 +additionalProperties: false
  65 +
  66 +examples:
  67 +  - |
  68 +    partitions {
  69 +        compatible = "brcm,bcm4908-partitions";
  70 +        #address-cells = <1>;
  71 +        #size-cells = <1>;
  72 +
  73 +        partition@0 {
  74 +            label = "cferom";
  75 +            reg = <0x0 0x100000>;
  76 +        };
  77 +
  78 +        partition@100000 {
  79 +            compatible = "brcm,bcm4908-firmware";
  80 +            reg = <0x100000 0xf00000>;
  81 +        };
  82 +
  83 +        partition@1000000 {
  84 +            compatible = "brcm,bcm4908-firmware";
  85 +            reg = <0x1000000 0xf00000>;
  86 +        };
  87 +
  88 +        partition@1f00000 {
  89 +            label = "calibration";
  90 +            reg = <0x1f00000 0x100000>;
  91 +        };
  92 +    };