99 lines
2.7 KiB
Diff
99 lines
2.7 KiB
Diff
From 2fa7294175c76e1ec568aa75c1891fd908728c8d Mon Sep 17 00:00:00 2001
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From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal@milecki.pl>
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Date: Fri, 12 Mar 2021 14:49:18 +0100
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Subject: [PATCH] dt-bindings: mtd: add binding for Linksys Northstar
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partitions
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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Linksys on Broadcom Northstar devices uses fixed flash layout with
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multiple firmware partitions.
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Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
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Reviewed-by: Rob Herring <robh@kernel.org>
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Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
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Link: https://lore.kernel.org/linux-mtd/20210312134919.7767-1-zajec5@gmail.com
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---
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.../mtd/partitions/linksys,ns-partitions.yaml | 74 +++++++++++++++++++
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1 file changed, 74 insertions(+)
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create mode 100644 Documentation/devicetree/bindings/mtd/partitions/linksys,ns-partitions.yaml
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--- /dev/null
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+++ b/Documentation/devicetree/bindings/mtd/partitions/linksys,ns-partitions.yaml
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@@ -0,0 +1,74 @@
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+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
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+%YAML 1.2
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+---
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+$id: http://devicetree.org/schemas/mtd/partitions/linksys,ns-partitions.yaml#
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+$schema: http://devicetree.org/meta-schemas/core.yaml#
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+
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+title: Linksys Northstar partitioning
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+
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+description: |
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+ Linksys devices based on Broadcom Northstar architecture often use two
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+ firmware partitions. One is used for regular booting, the other is treated as
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+ fallback.
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+
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+ This binding allows defining all fixed partitions and marking those containing
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+ firmware. System can use that information e.g. for booting or flashing
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+ purposes.
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+
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+maintainers:
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+ - Rafał Miłecki <rafal@milecki.pl>
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+
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+properties:
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+ compatible:
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+ const: linksys,ns-partitions
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+
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+ "#address-cells":
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+ enum: [ 1, 2 ]
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+
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+ "#size-cells":
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+ enum: [ 1, 2 ]
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+
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+patternProperties:
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+ "^partition@[0-9a-f]+$":
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+ $ref: "partition.yaml#"
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+ properties:
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+ compatible:
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+ items:
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+ - const: linksys,ns-firmware
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+ - const: brcm,trx
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+ unevaluatedProperties: false
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+
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+required:
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+ - "#address-cells"
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+ - "#size-cells"
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+
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+additionalProperties: false
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+
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+examples:
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+ - |
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+ partitions {
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+ compatible = "linksys,ns-partitions";
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+ #address-cells = <1>;
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+ #size-cells = <1>;
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+
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+ partition@0 {
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+ label = "boot";
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+ reg = <0x0 0x100000>;
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+ read-only;
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+ };
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+
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+ partition@100000 {
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+ label = "nvram";
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+ reg = <0x100000 0x100000>;
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+ };
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+
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+ partition@200000 {
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+ compatible = "linksys,ns-firmware", "brcm,trx";
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+ reg = <0x200000 0xf00000>;
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+ };
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+
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+ partition@1100000 {
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+ compatible = "linksys,ns-firmware", "brcm,trx";
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+ reg = <0x1100000 0xf00000>;
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+ };
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+ };
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