[PATCH v5 3/9] dt-bindings: memory: lpddr2: Add revision-id properties
From: Dmitry Osipenko <digetx@gmail.com>
Date: 2021-10-06 22:49:26
Also in:
linux-tegra, lkml
Subsystem:
memory controller drivers, open firmware and flattened device tree bindings, the rest · Maintainers:
Krzysztof Kozlowski, Rob Herring, Conor Dooley, Linus Torvalds
Add optional revision-id standard LPDDR2 properties which will help to identify memory chip. Signed-off-by: Dmitry Osipenko <digetx@gmail.com> --- .../memory-controllers/ddr/jedec,lpddr2.yaml | 14 ++++++++++++++ 1 file changed, 14 insertions(+)
diff --git a/Documentation/devicetree/bindings/memory-controllers/ddr/jedec,lpddr2.yaml b/Documentation/devicetree/bindings/memory-controllers/ddr/jedec,lpddr2.yaml
index f931fe910ce5..fe573750577e 100644
--- a/Documentation/devicetree/bindings/memory-controllers/ddr/jedec,lpddr2.yaml
+++ b/Documentation/devicetree/bindings/memory-controllers/ddr/jedec,lpddr2.yaml@@ -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>;
--
2.32.0