[PATCH 2/3] dt-bindings: mtd: add binding from BCM4908 partitions
Rafał Miłecki
zajec5 at gmail.com
Fri Jan 15 10:39:00 EST 2021
From: Rafał Miłecki <rafal at 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 at 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 at 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 at 0 {
+ label = "cferom";
+ reg = <0x0 0x100000>;
+ };
+
+ partition at 100000 {
+ compatible = "brcm,bcm4908-firmware";
+ reg = <0x100000 0xf00000>;
+ };
+
+ partition at 1000000 {
+ compatible = "brcm,bcm4908-firmware";
+ reg = <0x1000000 0xf00000>;
+ };
+
+ partition at 1f00000 {
+ label = "calibration";
+ reg = <0x1f00000 0x100000>;
+ };
+ };
--
2.26.2
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