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dt-bindings: mtd: describe the simple BCM963XX NOR flash layout

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Add binding documentation for the standard CFE based BCM963XX flash
layout, found in most devices using a BCM63XX SoC with NOR flash.

Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Richard Weinberger <richard@nod.at>
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Jonas Gorski 2019-03-28 15:19:06 +01:00 committed by Richard Weinberger
parent 4bc11a2418
commit daa82b93f5
1 changed files with 24 additions and 0 deletions
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Documentation/devicetree/bindings/mtd/partitions/brcm,bcm963xx-cfe-nor-partitions.txt Normal file
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Broadcom BCM963XX CFE Loader NOR Flash Partitions
=================================================
Most Broadcom BCM63XX SoC based devices follow the Broadcom reference layout for
NOR. The first erase block used for the CFE bootloader, the last for an
NVRAM partition, and the remainder in-between for one to two firmware partitions
at fixed offsets. A valid firmware partition is identified by the ImageTag
header found at beginning of the second erase block, containing the rootfs and
kernel offsets and sizes within the firmware partition.
Required properties:
- compatible : must be "brcm,bcm963xx-cfe-nor-partitions"
Example:
flash@1fc00000 {
compatible = "cfi-flash";
reg = <0x1fc00000 0x400000>;
bank-width = <2>;
partitions {
compatible = "brcm,bcm963xx-cfe-nor-partitions";
};
};