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[1/5] dt-bindings: mtd: describe the simple BCM963XX NOR flash layout

Message ID 20180828111944.5956-2-jonas.gorski@gmail.com
State Not Applicable, archived
Headers show
Series mtd: bcm63xxpart: add device tree support | expand

Commit Message

Jonas Gorski Aug. 28, 2018, 11:19 a.m. UTC 
Add binding documentation for the standard CFE based BCM963XX flash
layout, found in most devices using a BCM63XX SoC with NOR flash.

Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>
---
 .../brcm,bcm963xx-cfe-nor-partitions.txt           | 24 ++++++++++++++++++++++
 1 file changed, 24 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/mtd/partitions/brcm,bcm963xx-cfe-nor-partitions.txt
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Patch

diff --git a/Documentation/devicetree/bindings/mtd/partitions/brcm,bcm963xx-cfe-nor-partitions.txt b/Documentation/devicetree/bindings/mtd/partitions/brcm,bcm963xx-cfe-nor-partitions.txt
new file mode 100644
index 000000000000..9f630e95f180
--- /dev/null
+++ b/Documentation/devicetree/bindings/mtd/partitions/brcm,bcm963xx-cfe-nor-partitions.txt
@@ -0,0 +1,24 @@ 
+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";
+	};
+};