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[2/3] dt-bindings: mtd: add binding from BCM4908 partitions

Message ID 20210115153901.31052-2-zajec5@gmail.com
State Changes Requested
Headers show
Series [1/3] dt-bindings: mtd: move partition binding to its own file | expand

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Commit Message

Rafał Miłecki Jan. 15, 2021, 3:39 p.m. UTC
From: Rafał Miłecki <rafal@milecki.pl>

BCM4908 uses fixed partitions layout but function of some partitions may
vary. Some devices use multiple firmware partitions and those should be
marked to let system discover their purpose.

Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
---
 .../partitions/brcm,bcm4908-partitions.yaml   | 68 +++++++++++++++++++
 1 file changed, 68 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/mtd/partitions/brcm,bcm4908-partitions.yaml

Comments

Rob Herring Jan. 25, 2021, 10:42 p.m. UTC | #1
On Fri, Jan 15, 2021 at 04:39:00PM +0100, Rafał Miłecki wrote:
> From: Rafał Miłecki <rafal@milecki.pl>
> 
> BCM4908 uses fixed partitions layout but function of some partitions may
> vary. Some devices use multiple firmware partitions and those should be
> marked to let system discover their purpose.
> 
> Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
> ---
>  .../partitions/brcm,bcm4908-partitions.yaml   | 68 +++++++++++++++++++
>  1 file changed, 68 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/mtd/partitions/brcm,bcm4908-partitions.yaml
> 
> diff --git a/Documentation/devicetree/bindings/mtd/partitions/brcm,bcm4908-partitions.yaml b/Documentation/devicetree/bindings/mtd/partitions/brcm,bcm4908-partitions.yaml
> new file mode 100644
> index 000000000000..4090b61a3da7
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/mtd/partitions/brcm,bcm4908-partitions.yaml
> @@ -0,0 +1,68 @@
> +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/mtd/partitions/brcm,bcm4908-partitions.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Broadcom BCM4908 partitioning
> +
> +description: |
> +  Broadcom BCM4908 CFE bootloader supports two firmware partitions. One is used
> +  for regular booting, the other is treated as fallback.
> +
> +  This binding allows defining all fixed partitions and marking those containing
> +  firmware. System can use that information e.g. for booting or flashing
> +  purposes.
> +
> +maintainers:
> +  - Rafał Miłecki <rafal@milecki.pl>
> +
> +properties:
> +  compatible:
> +    const: brcm,bcm4908-partitions
> +
> +  "#address-cells": true
> +
> +  "#size-cells": true

limit these to 1 and 2? 

> +
> +patternProperties:
> +  "@[0-9a-f]+$":

^partition@...

> +    allOf:

You can drop 'allOf'.

> +      - $ref: "partition.yaml#"
> +      - properties:
> +          compatible:
> +            const: brcm,bcm4908-firmware

Also needs 'unevaluatedProperties: false'

> +
> +required:
> +  - "#address-cells"
> +  - "#size-cells"
> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +    partitions {
> +        compatible = "brcm,bcm4908-partitions";
> +        #address-cells = <1>;
> +        #size-cells = <1>;
> +
> +        partition@0 {
> +            label = "cferom";
> +            reg = <0x0 0x100000>;
> +        };
> +
> +        partition@100000 {
> +            compatible = "brcm,bcm4908-firmware";
> +            reg = <0x100000 0xf00000>;
> +        };
> +
> +        partition@1000000 {
> +            compatible = "brcm,bcm4908-firmware";
> +            reg = <0x1000000 0xf00000>;
> +        };
> +
> +        partition@1f00000 {
> +            label = "calibration";
> +            reg = <0x1f00000 0x100000>;
> +        };
> +    };
> -- 
> 2.26.2
>
diff mbox series

Patch

diff --git a/Documentation/devicetree/bindings/mtd/partitions/brcm,bcm4908-partitions.yaml b/Documentation/devicetree/bindings/mtd/partitions/brcm,bcm4908-partitions.yaml
new file mode 100644
index 000000000000..4090b61a3da7
--- /dev/null
+++ b/Documentation/devicetree/bindings/mtd/partitions/brcm,bcm4908-partitions.yaml
@@ -0,0 +1,68 @@ 
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/mtd/partitions/brcm,bcm4908-partitions.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Broadcom BCM4908 partitioning
+
+description: |
+  Broadcom BCM4908 CFE bootloader supports two firmware partitions. One is used
+  for regular booting, the other is treated as fallback.
+
+  This binding allows defining all fixed partitions and marking those containing
+  firmware. System can use that information e.g. for booting or flashing
+  purposes.
+
+maintainers:
+  - Rafał Miłecki <rafal@milecki.pl>
+
+properties:
+  compatible:
+    const: brcm,bcm4908-partitions
+
+  "#address-cells": true
+
+  "#size-cells": true
+
+patternProperties:
+  "@[0-9a-f]+$":
+    allOf:
+      - $ref: "partition.yaml#"
+      - properties:
+          compatible:
+            const: brcm,bcm4908-firmware
+
+required:
+  - "#address-cells"
+  - "#size-cells"
+
+additionalProperties: false
+
+examples:
+  - |
+    partitions {
+        compatible = "brcm,bcm4908-partitions";
+        #address-cells = <1>;
+        #size-cells = <1>;
+
+        partition@0 {
+            label = "cferom";
+            reg = <0x0 0x100000>;
+        };
+
+        partition@100000 {
+            compatible = "brcm,bcm4908-firmware";
+            reg = <0x100000 0xf00000>;
+        };
+
+        partition@1000000 {
+            compatible = "brcm,bcm4908-firmware";
+            reg = <0x1000000 0xf00000>;
+        };
+
+        partition@1f00000 {
+            label = "calibration";
+            reg = <0x1f00000 0x100000>;
+        };
+    };