target/linux/bcm4908/patches-5.4/140-0002-dt-bindings-mtd-add-binding-from-BCM4908-partitions.patch

   1 From 4f740351484e88bcea3776578288b6ec400829c8 Mon Sep 17 00:00:00 2001
   2 From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal@milecki.pl>
   3 Date: Fri, 15 Jan 2021 16:01:04 +0100
   4 Subject: [PATCH 2/3] dt-bindings: mtd: add binding from 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 should be
  11 marked to let system discover their purpose.
  12
  13 Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
  14 ---
  15  .../partitions/brcm,bcm4908-partitions.yaml   | 68 +++++++++++++++++++
  16  1 file changed, 68 insertions(+)
  17  create mode 100644 Documentation/devicetree/bindings/mtd/partitions/brcm,bcm4908-partitions.yaml
  18
  19 --- /dev/null
  20 +++ b/Documentation/devicetree/bindings/mtd/partitions/brcm,bcm4908-partitions.yaml
  21 @@ -0,0 +1,68 @@
  22 +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
  23 +%YAML 1.2
  24 +---
  25 +$id: http://devicetree.org/schemas/mtd/partitions/brcm,bcm4908-partitions.yaml#
  26 +$schema: http://devicetree.org/meta-schemas/core.yaml#
  27 +
  28 +title: Broadcom BCM4908 partitioning
  29 +
  30 +description: |
  31 +  Broadcom BCM4908 CFE bootloader supports two firmware partitions. One is used
  32 +  for regular booting, the other is treated as fallback.
  33 +
  34 +  This binding allows defining all fixed partitions and marking those containing
  35 +  firmware. System can use that information e.g. for booting or flashing
  36 +  purposes.
  37 +
  38 +maintainers:
  39 +  - Rafał Miłecki <rafal@milecki.pl>
  40 +
  41 +properties:
  42 +  compatible:
  43 +    const: brcm,bcm4908-partitions
  44 +
  45 +  "#address-cells": true
  46 +
  47 +  "#size-cells": true
  48 +
  49 +patternProperties:
  50 +  "@[0-9a-f]+$":
  51 +    allOf:
  52 +      - $ref: "partition.yaml#"
  53 +      - properties:
  54 +          compatible:
  55 +            const: brcm,bcm4908-firmware
  56 +
  57 +required:
  58 +  - "#address-cells"
  59 +  - "#size-cells"
  60 +
  61 +additionalProperties: false
  62 +
  63 +examples:
  64 +  - |
  65 +    partitions {
  66 +        compatible = "brcm,bcm4908-partitions";
  67 +        #address-cells = <1>;
  68 +        #size-cells = <1>;
  69 +
  70 +        partition@0 {
  71 +            label = "cferom";
  72 +            reg = <0x0 0x100000>;
  73 +        };
  74 +
  75 +        partition@100000 {
  76 +            compatible = "brcm,bcm4908-firmware";
  77 +            reg = <0x100000 0xf00000>;
  78 +        };
  79 +
  80 +        partition@1000000 {
  81 +            compatible = "brcm,bcm4908-firmware";
  82 +            reg = <0x1000000 0xf00000>;
  83 +        };
  84 +
  85 +        partition@1f00000 {
  86 +            label = "calibration";
  87 +            reg = <0x1f00000 0x100000>;
  88 +        };
  89 +    };