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From 4f740351484e88bcea3776578288b6ec400829c8 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal@milecki.pl>
Date: Fri, 15 Jan 2021 16:01:04 +0100
Subject: [PATCH 2/3] dt-bindings: mtd: add binding from BCM4908 partitions
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
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
--- /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>;
+ };
+ };
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