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+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/mtd/partitions/brcm,bcm947xx-cfe-partitions.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Broadcom BCM47xx Partitions
+
+description: |
+ Broadcom is one of hardware manufacturers providing SoCs (BCM47xx) used in
+ home routers. Their BCM947xx boards using CFE bootloader have several
+ partitions without any on-flash partition table. On some devices their sizes
+ and/or meanings can also vary so fixed partitioning can't be used.
+
+ Discovering partitions on these devices is possible thanks to having a special
+ header and/or magic signature at the beginning of each of them. They are also
+ block aligned which is important for determinig a size.
+
+ Most of partitions use ASCII text based magic for determining a type. More
+ complex partitions (like TRX with its HDR0 magic) may include extra header
+ containing some details, including a length.
+
+ A list of supported partitions includes:
+ 1) Bootloader with Broadcom's CFE (Common Firmware Environment)
+ 2) NVRAM with configuration/calibration data
+ 3) Device manufacturer's data with some default values (e.g. SSIDs)
+ 4) TRX firmware container which can hold up to 4 subpartitions
+ 5) Backup TRX firmware used after failed upgrade
+
+ As mentioned earlier, role of some partitions may depend on extra
+ configuration. For example both: main firmware and backup firmware use the
+ same TRX format with the same header. To distinguish currently used firmware a
+ CFE's environment variable "bootpartition" is used.
+
+maintainers:
+ - Rafał Miłecki <rafal@milecki.pl>
+
+select: false
+
+properties:
+ compatible:
+ const: brcm,bcm947xx-cfe-partitions
+
+additionalProperties: false
+
+examples:
+ - |
+ partitions {
+ compatible = "brcm,bcm947xx-cfe-partitions";
+ };