[openwrt/openwrt] kernel: backport mtd commit converting partitions doc syntax
LEDE Commits
lede-commits at lists.infradead.org
Wed Jan 20 01:52:26 EST 2021
rmilecki pushed a commit to openwrt/openwrt.git, branch master:
https://git.openwrt.org/7495acb555730b56ca85e259c1565d141220674a
commit 7495acb555730b56ca85e259c1565d141220674a
Author: Rafał Miłecki <rafal at milecki.pl>
AuthorDate: Tue Jan 19 21:36:30 2021 +0100
kernel: backport mtd commit converting partitions doc syntax
1. It's useful for developing & validating DTS files inside OpenWrt
2. This will allow backporting later changes that depend on it
Signed-off-by: Rafał Miłecki <rafal at milecki.pl>
---
...-mtd-partition-Document-the-slc-mode-prop.patch | 28 ++
...-mtd-convert-fixed-partitions-to-the-json.patch | 324 +++++++++++++++++++++
2 files changed, 352 insertions(+)
diff --git a/target/linux/generic/backport-5.4/400-v5.8-dt-bindings-mtd-partition-Document-the-slc-mode-prop.patch b/target/linux/generic/backport-5.4/400-v5.8-dt-bindings-mtd-partition-Document-the-slc-mode-prop.patch
new file mode 100644
index 0000000000..7926843686
--- /dev/null
+++ b/target/linux/generic/backport-5.4/400-v5.8-dt-bindings-mtd-partition-Document-the-slc-mode-prop.patch
@@ -0,0 +1,28 @@
+From 422928a040fe17d17ded69c57903c7908423c7ef Mon Sep 17 00:00:00 2001
+From: Boris Brezillon <bbrezillon at kernel.org>
+Date: Sun, 3 May 2020 17:53:38 +0200
+Subject: [PATCH] dt-bindings: mtd: partition: Document the slc-mode property
+
+Add a boolean property to force a specific partition attached to an MLC
+NAND to be accessed in an emulated SLC mode this making this partition
+immune to paired-pages corruptions.
+
+Signed-off-by: Boris Brezillon <bbrezillon at kernel.org>
+Signed-off-by: Miquel Raynal <miquel.raynal at bootlin.com>
+Link: https://lore.kernel.org/linux-mtd/20200503155341.16712-6-miquel.raynal@bootlin.com
+---
+ Documentation/devicetree/bindings/mtd/partition.txt | 3 +++
+ 1 file changed, 3 insertions(+)
+
+--- a/Documentation/devicetree/bindings/mtd/partition.txt
++++ b/Documentation/devicetree/bindings/mtd/partition.txt
+@@ -61,6 +61,9 @@ Optional properties:
+ 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:
+
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 at 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 at milecki.pl>
+Link: https://lore.kernel.org/r/20201210172352.31632-1-zajec5@gmail.com
+Signed-off-by: Rob Herring <robh at 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 at 0 {
+- partitions {
+- compatible = "fixed-partitions";
+- #address-cells = <1>;
+- #size-cells = <1>;
+-
+- partition at 0 {
+- label = "u-boot";
+- reg = <0x0000000 0x100000>;
+- read-only;
+- };
+-
+- uimage at 100000 {
+- reg = <0x0100000 0x200000>;
+- };
+- };
+-};
+-
+-flash at 1 {
+- partitions {
+- compatible = "fixed-partitions";
+- #address-cells = <1>;
+- #size-cells = <2>;
+-
+- /* a 4 GiB partition */
+- partition at 0 {
+- label = "filesystem";
+- reg = <0x00000000 0x1 0x00000000>;
+- };
+- };
+-};
+-
+-flash at 2 {
+- partitions {
+- compatible = "fixed-partitions";
+- #address-cells = <2>;
+- #size-cells = <2>;
+-
+- /* an 8 GiB partition */
+- partition at 0 {
+- label = "filesystem #1";
+- reg = <0x0 0x00000000 0x2 0x00000000>;
+- };
+-
+- /* a 4 GiB partition */
+- partition at 200000000 {
+- label = "filesystem #2";
+- reg = <0x2 0x00000000 0x1 0x00000000>;
+- };
+- };
+-};
+-
+-flash at 3 {
+- partitions {
+- compatible = "fixed-partitions";
+- #address-cells = <1>;
+- #size-cells = <1>;
+-
+- partition at 0 {
+- label = "bootloader";
+- reg = <0x000000 0x100000>;
+- read-only;
+- };
+-
+- firmware at 100000 {
+- label = "firmware";
+- reg = <0x100000 0xe00000>;
+- compatible = "brcm,trx";
+- };
+-
+- calibration at f00000 {
+- label = "calibration";
+- reg = <0xf00000 0x100000>;
+- compatible = "fixed-partitions";
+- ranges = <0 0xf00000 0x100000>;
+- #address-cells = <1>;
+- #size-cells = <1>;
+-
+- partition at 0 {
+- label = "wifi0";
+- reg = <0x000000 0x080000>;
+- };
+-
+- partition at 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 at 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 at 0 {
++ label = "u-boot";
++ reg = <0x0000000 0x100000>;
++ read-only;
++ };
++
++ uimage at 100000 {
++ reg = <0x0100000 0x200000>;
++ };
++ };
++ - |
++ partitions {
++ compatible = "fixed-partitions";
++ #address-cells = <1>;
++ #size-cells = <2>;
++
++ /* a 4 GiB partition */
++ partition at 0 {
++ label = "filesystem";
++ reg = <0x00000000 0x1 0x00000000>;
++ };
++ };
++ - |
++ partitions {
++ compatible = "fixed-partitions";
++ #address-cells = <2>;
++ #size-cells = <2>;
++
++ /* an 8 GiB partition */
++ partition at 0 {
++ label = "filesystem #1";
++ reg = <0x0 0x00000000 0x2 0x00000000>;
++ };
++
++ /* a 4 GiB partition */
++ partition at 200000000 {
++ label = "filesystem #2";
++ reg = <0x2 0x00000000 0x1 0x00000000>;
++ };
++ };
++ - |
++ partitions {
++ compatible = "fixed-partitions";
++ #address-cells = <1>;
++ #size-cells = <1>;
++
++ partition at 0 {
++ label = "bootloader";
++ reg = <0x000000 0x100000>;
++ read-only;
++ };
++
++ firmware at 100000 {
++ compatible = "brcm,trx";
++ label = "firmware";
++ reg = <0x100000 0xe00000>;
++ };
++
++ calibration at f00000 {
++ compatible = "fixed-partitions";
++ label = "calibration";
++ reg = <0xf00000 0x100000>;
++ ranges = <0 0xf00000 0x100000>;
++ #address-cells = <1>;
++ #size-cells = <1>;
++
++ partition at 0 {
++ label = "wifi0";
++ reg = <0x000000 0x080000>;
++ };
++
++ partition at 80000 {
++ label = "wifi1";
++ reg = <0x080000 0x080000>;
++ };
++ };
++ };
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