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dt-bindings: memory: lpddr2: Add revision-id properties

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Add optional revision-id standard LPDDR2 properties which will help to
identify memory chip.

Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20211006224659.21434-4-digetx@gmail.com
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
This commit is contained in:
Dmitry Osipenko 2021-10-07 01:46:53 +03:00 committed by Krzysztof Kozlowski
parent 9e17f71e9c
commit 3539a2c6c6
1 changed files with 14 additions and 0 deletions
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14
Documentation/devicetree/bindings/memory-controllers/ddr/jedec,lpddr2.yaml
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@ -24,6 +24,18 @@ properties:
- enum:
- jedec,lpddr2-nvm
revision-id1:
$ref: /schemas/types.yaml#/definitions/uint32
maximum: 255
description: |
Revision 1 value of SDRAM chip. Obtained from device datasheet.
revision-id2:
$ref: /schemas/types.yaml#/definitions/uint32
maximum: 255
description: |
Revision 2 value of SDRAM chip. Obtained from device datasheet.
density:
$ref: /schemas/types.yaml#/definitions/uint32
description: |
@ -151,6 +163,8 @@ examples:
compatible = "elpida,ECB240ABACN", "jedec,lpddr2-s4";
density = <2048>;
io-width = <32>;
revision-id1 = <1>;
revision-id2 = <0>;
tRPab-min-tck = <3>;
tRCD-min-tck = <3>;