linux-kernel - [PATCH v4] dt-bindings: mtd: fixed-partitions: Add compression property

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Message-ID: <20230927180545.3522628-1-sjg@chromium.org>
Date:   Wed, 27 Sep 2023 12:05:43 -0600
From:   Simon Glass <sjg@...omium.org>
To:     devicetree@...r.kernel.org
Cc:     linux-mtd@...ts.infradead.org,
        U-Boot Mailing List <u-boot@...ts.denx.de>,
        Rob Herring <robh@...nel.org>, Tom Rini <trini@...sulko.com>,
        Simon Glass <sjg@...omium.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Miquel Raynal <miquel.raynal@...tlin.com>,
        Nick Terrell <terrelln@...com>,
        Rafał Miłecki <rafal@...ecki.pl>,
        Richard Weinberger <richard@....at>,
        Rob Herring <robh+dt@...nel.org>,
        Vignesh Raghavendra <vigneshr@...com>,
        linux-kernel@...r.kernel.org
Subject: [PATCH v4] dt-bindings: mtd: fixed-partitions: Add compression property

Sometimes the contents of a partition are compressed. Add a property to
express this and define the algorithm used.

Signed-off-by: Simon Glass <sjg@...omium.org>
---

Changes in v4:
- Add an example

Changes in v3:
- Just add a compression property for now

Changes in v2:
- Use "binman" for compatible instead of "u-boot,binman"
- Significantly rework the patch
- Use make dt_binding_check DT_SCHEMA_FILES=Documentation/../partitions

 .../mtd/partitions/fixed-partitions.yaml      | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/Documentation/devicetree/bindings/mtd/partitions/fixed-partitions.yaml b/Documentation/devicetree/bindings/mtd/partitions/fixed-partitions.yaml
index 331e564f29dc..058253d6d889 100644
--- a/Documentation/devicetree/bindings/mtd/partitions/fixed-partitions.yaml
+++ b/Documentation/devicetree/bindings/mtd/partitions/fixed-partitions.yaml
@@ -29,6 +29,24 @@ properties:
 
   "#size-cells": true
 
+  compression:
+    $ref: /schemas/types.yaml#/definitions/string
+    description: |
+      Compression algorithm used to store the data in this partition, chosen
+      from a list of well-known algorithms.
+
+      The contents are compressed using this algorithm.
+
+    enum:
+      - none
+      - bzip2
+      - gzip
+      - lzop
+      - lz4
+      - lzma
+      - xz
+      - zstd
+
 patternProperties:
   "@[0-9a-f]+$":
     $ref: partition.yaml#
@@ -64,6 +82,7 @@ examples:
 
         uimage@...000 {
             reg = <0x0100000 0x200000>;
+            compress = "lzma";
         };
     };
 
-- 
2.42.0.515.g380fc7ccd1-goog