diff mbox series

[V2,4/5] dt-bindings: mtd: describe BCM963XX ImageTag format and usage

Message ID 20190328141910.5723-5-jonas.gorski@gmail.com
State Accepted
Delegated to: Richard Weinberger
Headers show
Series mtd: bcm63xxpart: add device tree support | expand

Commit Message

Jonas Gorski March 28, 2019, 2:19 p.m. UTC 
Describe how to use the BCM963XX ImageTag format in a mixed flash layout
environment.

Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>
---
 .../mtd/partitions/brcm,bcm963xx-imagetag.txt      | 45 ++++++++++++++++++++++
 1 file changed, 45 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/mtd/partitions/brcm,bcm963xx-imagetag.txt

Comments

Florian Fainelli March 29, 2019, 2:13 a.m. UTC | #1 
On 3/28/2019 7:19 AM, Jonas Gorski wrote:
> Describe how to use the BCM963XX ImageTag format in a mixed flash layout
> environment.
> 
> Reviewed-by: Rob Herring <robh@kernel.org>
> Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>

Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
diff mbox series

Patch

diff --git a/Documentation/devicetree/bindings/mtd/partitions/brcm,bcm963xx-imagetag.txt b/Documentation/devicetree/bindings/mtd/partitions/brcm,bcm963xx-imagetag.txt
new file mode 100644
index 000000000000..f8b7418ed817
--- /dev/null
+++ b/Documentation/devicetree/bindings/mtd/partitions/brcm,bcm963xx-imagetag.txt
@@ -0,0 +1,45 @@ 
+Broadcom BCM963XX ImageTag Partition Container
+==============================================
+
+Some Broadcom BCM63XX SoC based devices contain additional, non discoverable
+partitions or non standard bootloader partition sizes. For these a mixed layout
+needs to be used with an explicit firmware partition.
+
+The BCM963XX ImageTag is a simple firmware header describing the offsets and
+sizes of the rootfs and kernel parts contained in the firmware.
+
+Required properties:
+- compatible : must be "brcm,bcm963xx-imagetag"
+
+Example:
+
+flash@1e000000 {
+	compatible = "cfi-flash";
+	reg = <0x1e000000 0x2000000>;
+	bank-width = <2>;
+
+	partitions {
+		compatible = "fixed-partitions";
+		#address-cells = <1>;
+		#size-cells = <1>;
+
+		cfe@0 {
+			reg = <0x0 0x10000>;
+			read-only;
+		};
+
+		firmware@10000 {
+			reg = <0x10000 0x7d0000>;
+			compatible = "brcm,bcm963xx-imagetag";
+		};
+
+		caldata@7e0000 {
+			reg = <0x7e0000 0x10000>;
+			read-only;
+		};
+
+		nvram@7f0000 {
+			reg = <0x7f0000 0x10000>;
+		};
+	};
+};