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Diffstat (limited to 'target/linux/generic/backport-5.4/401-v5.11-dt-bindings-mtd-convert-fixed-partitions-to-the-json.patch')
| -rw-r--r-- | target/linux/generic/backport-5.4/401-v5.11-dt-bindings-mtd-convert-fixed-partitions-to-the-json.patch | 324 |
1 files changed, 324 insertions, 0 deletions
diff --git a/target/linux/generic/backport-5.4/401-v5.11-dt-bindings-mtd-convert-fixed-partitions-to-the-json.patch b/target/linux/generic/backport-5.4/401-v5.11-dt-bindings-mtd-convert-fixed-partitions-to-the-json.patch new file mode 100644 index 0000000000..8aded43526 --- /dev/null +++ b/target/linux/generic/backport-5.4/401-v5.11-dt-bindings-mtd-convert-fixed-partitions-to-the-json.patch @@ -0,0 +1,324 @@ +From 04e9ab75267489224364fa510a88ada83e11c325 Mon Sep 17 00:00:00 2001 +From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal@milecki.pl> +Date: Thu, 10 Dec 2020 18:23:52 +0100 +Subject: [PATCH] dt-bindings: mtd: convert "fixed-partitions" to the + json-schema +MIME-Version: 1.0 +Content-Type: text/plain; charset=UTF-8 +Content-Transfer-Encoding: 8bit + +This standardizes its documentation, allows validating with Makefile +checks and helps writing DTS files. + +Noticeable changes: +1. Dropped "Partitions can be represented by sub-nodes of a flash + device." as we also support subpartitions (don't have to be part of + flash device node) +2. Dropped "to Linux" as bindings are meant to be os agnostic. + +Signed-off-by: Rafał Miłecki <rafal@milecki.pl> +Link: https://lore.kernel.org/r/20201210172352.31632-1-zajec5@gmail.com +Signed-off-by: Rob Herring <robh@kernel.org> +--- + .../devicetree/bindings/mtd/partition.txt | 131 +-------------- + .../mtd/partitions/fixed-partitions.yaml | 152 ++++++++++++++++++ + 2 files changed, 154 insertions(+), 129 deletions(-) + create mode 100644 Documentation/devicetree/bindings/mtd/partitions/fixed-partitions.yaml + +--- a/Documentation/devicetree/bindings/mtd/partition.txt ++++ b/Documentation/devicetree/bindings/mtd/partition.txt +@@ -24,137 +24,10 @@ another partitioning method. + Available bindings are listed in the "partitions" subdirectory. + + +-Fixed Partitions +-================ +- +-Partitions can be represented by sub-nodes of a flash device. This can be used +-on platforms which have strong conventions about which portions of a flash are +-used for what purposes, but which don't use an on-flash partition table such +-as RedBoot. +- +-The partition table should be a subnode of the flash node and should be named +-'partitions'. This node should have the following property: +-- compatible : (required) must be "fixed-partitions" +-Partitions are then defined in subnodes of the partitions node. ++Deprecated: partitions defined in flash node ++============================================ + + For backwards compatibility partitions as direct subnodes of the flash device are + supported. This use is discouraged. + NOTE: also for backwards compatibility, direct subnodes that have a compatible + string are not considered partitions, as they may be used for other bindings. +- +-#address-cells & #size-cells must both be present in the partitions subnode of the +-flash device. There are two valid values for both: +-<1>: for partitions that require a single 32-bit cell to represent their +- size/address (aka the value is below 4 GiB) +-<2>: for partitions that require two 32-bit cells to represent their +- size/address (aka the value is 4 GiB or greater). +- +-Required properties: +-- reg : The partition's offset and size within the flash +- +-Optional properties: +-- label : The label / name for this partition. If omitted, the label is taken +- from the node name (excluding the unit address). +-- read-only : This parameter, if present, is a hint to Linux that this +- partition should only be mounted read-only. This is usually used for flash +- partitions containing early-boot firmware images or data which should not be +- clobbered. +-- lock : Do not unlock the partition at initialization time (not supported on +- all devices) +-- slc-mode: This parameter, if present, allows one to emulate SLC mode on a +- partition attached to an MLC NAND thus making this partition immune to +- paired-pages corruptions +- +-Examples: +- +- +-flash@0 { +- partitions { +- compatible = "fixed-partitions"; +- #address-cells = <1>; +- #size-cells = <1>; +- +- partition@0 { +- label = "u-boot"; +- reg = <0x0000000 0x100000>; +- read-only; +- }; +- +- uimage@100000 { +- reg = <0x0100000 0x200000>; +- }; +- }; +-}; +- +-flash@1 { +- partitions { +- compatible = "fixed-partitions"; +- #address-cells = <1>; +- #size-cells = <2>; +- +- /* a 4 GiB partition */ +- partition@0 { +- label = "filesystem"; +- reg = <0x00000000 0x1 0x00000000>; +- }; +- }; +-}; +- +-flash@2 { +- partitions { +- compatible = "fixed-partitions"; +- #address-cells = <2>; +- #size-cells = <2>; +- +- /* an 8 GiB partition */ +- partition@0 { +- label = "filesystem #1"; +- reg = <0x0 0x00000000 0x2 0x00000000>; +- }; +- +- /* a 4 GiB partition */ +- partition@200000000 { +- label = "filesystem #2"; +- reg = <0x2 0x00000000 0x1 0x00000000>; +- }; +- }; +-}; +- +-flash@3 { +- partitions { +- compatible = "fixed-partitions"; +- #address-cells = <1>; +- #size-cells = <1>; +- +- partition@0 { +- label = "bootloader"; +- reg = <0x000000 0x100000>; +- read-only; +- }; +- +- firmware@100000 { +- label = "firmware"; +- reg = <0x100000 0xe00000>; +- compatible = "brcm,trx"; +- }; +- +- calibration@f00000 { +- label = "calibration"; +- reg = <0xf00000 0x100000>; +- compatible = "fixed-partitions"; +- ranges = <0 0xf00000 0x100000>; +- #address-cells = <1>; +- #size-cells = <1>; +- +- partition@0 { +- label = "wifi0"; +- reg = <0x000000 0x080000>; +- }; +- +- partition@80000 { +- label = "wifi1"; +- reg = <0x080000 0x080000>; +- }; +- }; +- }; +-}; +--- /dev/null ++++ b/Documentation/devicetree/bindings/mtd/partitions/fixed-partitions.yaml +@@ -0,0 +1,152 @@ ++# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause ++%YAML 1.2 ++--- ++$id: http://devicetree.org/schemas/mtd/partitions/fixed-partitions.yaml# ++$schema: http://devicetree.org/meta-schemas/core.yaml# ++ ++title: Fixed partitions ++ ++description: | ++ This binding can be used on platforms which have strong conventions about ++ which portions of a flash are used for what purposes, but which don't use an ++ on-flash partition table such as RedBoot. ++ ++ The partition table should be a node named "partitions". Partitions are then ++ defined as subnodes. ++ ++maintainers: ++ - Rafał Miłecki <rafal@milecki.pl> ++ ++properties: ++ compatible: ++ const: fixed-partitions ++ ++ "#address-cells": true ++ ++ "#size-cells": true ++ ++patternProperties: ++ "@[0-9a-f]+$": ++ description: node describing a single flash partition ++ type: object ++ ++ properties: ++ reg: ++ description: partition's offset and size within the flash ++ maxItems: 1 ++ ++ label: ++ description: The label / name for this partition. If omitted, the label ++ is taken from the node name (excluding the unit address). ++ ++ read-only: ++ description: This parameter, if present, is a hint that this partition ++ should only be mounted read-only. This is usually used for flash ++ partitions containing early-boot firmware images or data which should ++ not be clobbered. ++ type: boolean ++ ++ lock: ++ description: Do not unlock the partition at initialization time (not ++ supported on all devices) ++ type: boolean ++ ++ slc-mode: ++ description: This parameter, if present, allows one to emulate SLC mode ++ on a partition attached to an MLC NAND thus making this partition ++ immune to paired-pages corruptions ++ type: boolean ++ ++ required: ++ - reg ++ ++required: ++ - "#address-cells" ++ - "#size-cells" ++ ++additionalProperties: true ++ ++examples: ++ - | ++ partitions { ++ compatible = "fixed-partitions"; ++ #address-cells = <1>; ++ #size-cells = <1>; ++ ++ partition@0 { ++ label = "u-boot"; ++ reg = <0x0000000 0x100000>; ++ read-only; ++ }; ++ ++ uimage@100000 { ++ reg = <0x0100000 0x200000>; ++ }; ++ }; ++ - | ++ partitions { ++ compatible = "fixed-partitions"; ++ #address-cells = <1>; ++ #size-cells = <2>; ++ ++ /* a 4 GiB partition */ ++ partition@0 { ++ label = "filesystem"; ++ reg = <0x00000000 0x1 0x00000000>; ++ }; ++ }; ++ - | ++ partitions { ++ compatible = "fixed-partitions"; ++ #address-cells = <2>; ++ #size-cells = <2>; ++ ++ /* an 8 GiB partition */ ++ partition@0 { ++ label = "filesystem #1"; ++ reg = <0x0 0x00000000 0x2 0x00000000>; ++ }; ++ ++ /* a 4 GiB partition */ ++ partition@200000000 { ++ label = "filesystem #2"; ++ reg = <0x2 0x00000000 0x1 0x00000000>; ++ }; ++ }; ++ - | ++ partitions { ++ compatible = "fixed-partitions"; ++ #address-cells = <1>; ++ #size-cells = <1>; ++ ++ partition@0 { ++ label = "bootloader"; ++ reg = <0x000000 0x100000>; ++ read-only; ++ }; ++ ++ firmware@100000 { ++ compatible = "brcm,trx"; ++ label = "firmware"; ++ reg = <0x100000 0xe00000>; ++ }; ++ ++ calibration@f00000 { ++ compatible = "fixed-partitions"; ++ label = "calibration"; ++ reg = <0xf00000 0x100000>; ++ ranges = <0 0xf00000 0x100000>; ++ #address-cells = <1>; ++ #size-cells = <1>; ++ ++ partition@0 { ++ label = "wifi0"; ++ reg = <0x000000 0x080000>; ++ }; ++ ++ partition@80000 { ++ label = "wifi1"; ++ reg = <0x080000 0x080000>; ++ }; ++ }; ++ }; |