Messages in this thread Patch in this message | | | From | Julius Werner <> | Subject | [PATCH v3 1/3] dt-bindings: memory: lpddr2: Adjust revision ID property to match lpddr3 | Date | Wed, 23 Feb 2022 16:34:19 -0800 |
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Commit 3539a2 (dt-bindings: memory: lpddr2: Add revision-id properties) added the properties `revision-id1` and `revision-id2` to the "jedec,lpddr2" binding. The "jedec,lpddr3" binding already had a single array property `revision-id` for the same purpose. For consistency between related memory types, this patch deprecates the LPDDR2 properties and instead adds a property in the same style as for LPDDR3 to that binding.
Signed-off-by: Julius Werner <jwerner@chromium.org> --- .../memory-controllers/ddr/jedec,lpddr2.yaml | 17 +++++++++++++++-- 1 file changed, 15 insertions(+), 2 deletions(-)
Changelog:
- v2: - Updated commit message to fill in commit reference to earlier patch - v3: - Added `items` specification with `minimum` and `maximum` values to `revision-id` binding - Updated binding example to preserve previous revision ID values
diff --git a/Documentation/devicetree/bindings/memory-controllers/ddr/jedec,lpddr2.yaml b/Documentation/devicetree/bindings/memory-controllers/ddr/jedec,lpddr2.yaml index 25ed0266f6dd3d..e9d0936861b779 100644 --- a/Documentation/devicetree/bindings/memory-controllers/ddr/jedec,lpddr2.yaml +++ b/Documentation/devicetree/bindings/memory-controllers/ddr/jedec,lpddr2.yaml @@ -30,12 +30,26 @@ properties: maximum: 255 description: | Revision 1 value of SDRAM chip. Obtained from device datasheet. + Property is deprecated, use revision-id instead. + deprecated: true revision-id2: $ref: /schemas/types.yaml#/definitions/uint32 maximum: 255 description: | Revision 2 value of SDRAM chip. Obtained from device datasheet. + Property is deprecated, use revision-id instead. + deprecated: true + + revision-id: + $ref: /schemas/types.yaml#/definitions/uint32-array + description: | + Revision IDs read from Mode Register 6 and 7. One byte per uint32 cell (i.e. <MR6 MR7>). + minItems: 2 + maxItems: 2 + items: + minimum: 0 + maximum: 255 density: $ref: /schemas/types.yaml#/definitions/uint32 @@ -164,8 +178,7 @@ examples: compatible = "elpida,ECB240ABACN", "jedec,lpddr2-s4"; density = <2048>; io-width = <32>; - revision-id1 = <1>; - revision-id2 = <0>; + revision-id = <1 0>; tRPab-min-tck = <3>; tRCD-min-tck = <3>; -- 2.31.0
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