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ac7d45b5e7
This adds quirks support to the "ofpart" parser. It's required to support fixed partitions that require some extra logic. Right now only BCM4908 binding is supported (BCM4908 requires detecting currently used "firmware" partition). Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
93 lines
2.6 KiB
Diff
93 lines
2.6 KiB
Diff
From 6e9dff6fe3fbc452f16566e4a7e293b0decefdba 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: Thu, 11 Feb 2021 23:04:26 +0100
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Subject: [PATCH] dt-bindings: mtd: add binding for BCM4908 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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BCM4908 uses fixed partitions layout but function of some partitions may
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vary. Some devices use multiple firmware partitions and those partitions
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should be marked to let system discover their purpose.
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Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
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Signed-off-by: Richard Weinberger <richard@nod.at>
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---
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.../partitions/brcm,bcm4908-partitions.yaml | 70 +++++++++++++++++++
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1 file changed, 70 insertions(+)
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create mode 100644 Documentation/devicetree/bindings/mtd/partitions/brcm,bcm4908-partitions.yaml
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--- /dev/null
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+++ b/Documentation/devicetree/bindings/mtd/partitions/brcm,bcm4908-partitions.yaml
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@@ -0,0 +1,70 @@
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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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+$id: http://devicetree.org/schemas/mtd/partitions/brcm,bcm4908-partitions.yaml#
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+$schema: http://devicetree.org/meta-schemas/core.yaml#
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+
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+title: Broadcom BCM4908 partitioning
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+
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+description: |
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+ Broadcom BCM4908 CFE bootloader supports two firmware partitions. One is used
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+ for regular booting, the other is treated as 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: brcm,bcm4908-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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+ const: brcm,bcm4908-firmware
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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 = "brcm,bcm4908-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 = "cferom";
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+ reg = <0x0 0x100000>;
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+ };
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+
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+ partition@100000 {
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+ compatible = "brcm,bcm4908-firmware";
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+ reg = <0x100000 0xf00000>;
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+ };
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+
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+ partition@1000000 {
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+ compatible = "brcm,bcm4908-firmware";
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+ reg = <0x1000000 0xf00000>;
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+ };
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+
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+ partition@1f00000 {
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+ label = "calibration";
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+ reg = <0x1f00000 0x100000>;
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+ };
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+ };
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