Commit 80ce9173 authored by Julius Werner's avatar Julius Werner Committed by Krzysztof Kozlowski
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dt-bindings: memory: lpddr2: Adjust revision ID property to match lpddr3 



Commit 3539a2c6 ("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: default avatarJulius Werner <jwerner@chromium.org>
Acked-by: default avatarRob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20220224003421.3440124-2-jwerner@chromium.org


Signed-off-by: default avatarKrzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
parent 4e890b22

Documentation/devicetree/bindings/memory-controllers/ddr/jedec,lpddr2.yaml

+15 −2
Original line number Diff line number Diff line
@@ -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
@@ -162,8 +176,7 @@ 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>;