This patch adds bindings for LPDDR4 and LPDDR5 memory analogous to the existing bindings for LPDDR2 and LPDDR3. For now, the new types are only needed for topology description, so other properties like timing parameters are omitted. They can be added later if needed. Signed-off-by: Julius Werner <jwerner@xxxxxxxxxxxx> --- .../ddr/jedec,lpddr-props.yaml | 4 ++ .../memory-controllers/ddr/jedec,lpddr4.yaml | 35 ++++++++++++++ .../memory-controllers/ddr/jedec,lpddr5.yaml | 46 +++++++++++++++++++ 3 files changed, 85 insertions(+) create mode 100644 Documentation/devicetree/bindings/memory-controllers/ddr/jedec,lpddr4.yaml create mode 100644 Documentation/devicetree/bindings/memory-controllers/ddr/jedec,lpddr5.yaml Changelog: - v2 - removed minItems - moved `$ref` below `maintainers` - renamed example node from `lpddr4` to `lpddr` - v3 - removed manufacturer-id property from examples - v4 - removed quotes from schema $ref strings diff --git a/Documentation/devicetree/bindings/memory-controllers/ddr/jedec,lpddr-props.yaml b/Documentation/devicetree/bindings/memory-controllers/ddr/jedec,lpddr-props.yaml index 4114cfa8de67f1..92ef660888f318 100644 --- a/Documentation/devicetree/bindings/memory-controllers/ddr/jedec,lpddr-props.yaml +++ b/Documentation/devicetree/bindings/memory-controllers/ddr/jedec,lpddr-props.yaml @@ -45,9 +45,13 @@ properties: - 512 - 1024 - 2048 + - 3072 - 4096 + - 6144 - 8192 + - 12288 - 16384 + - 24576 - 32768 io-width: diff --git a/Documentation/devicetree/bindings/memory-controllers/ddr/jedec,lpddr4.yaml b/Documentation/devicetree/bindings/memory-controllers/ddr/jedec,lpddr4.yaml new file mode 100644 index 00000000000000..a078892fecee36 --- /dev/null +++ b/Documentation/devicetree/bindings/memory-controllers/ddr/jedec,lpddr4.yaml @@ -0,0 +1,35 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/memory-controllers/ddr/jedec,lpddr4.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: LPDDR4 SDRAM compliant to JEDEC JESD209-4 + +maintainers: + - Krzysztof Kozlowski <krzk@xxxxxxxxxx> + +allOf: + - $ref: jedec,lpddr-props.yaml# + +properties: + compatible: + items: + - pattern: "^lpddr4-[0-9a-f]{2},[0-9a-f]{4}$" + - const: jedec,lpddr4 + +required: + - compatible + - density + - io-width + +unevaluatedProperties: false + +examples: + - | + lpddr { + compatible = "lpddr4-ff,0100", "jedec,lpddr4"; + density = <8192>; + io-width = <16>; + revision-id = <1 0>; + }; diff --git a/Documentation/devicetree/bindings/memory-controllers/ddr/jedec,lpddr5.yaml b/Documentation/devicetree/bindings/memory-controllers/ddr/jedec,lpddr5.yaml new file mode 100644 index 00000000000000..e441dac5f15445 --- /dev/null +++ b/Documentation/devicetree/bindings/memory-controllers/ddr/jedec,lpddr5.yaml @@ -0,0 +1,46 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/memory-controllers/ddr/jedec,lpddr5.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: LPDDR5 SDRAM compliant to JEDEC JESD209-5 + +maintainers: + - Krzysztof Kozlowski <krzk@xxxxxxxxxx> + +allOf: + - $ref: jedec,lpddr-props.yaml# + +properties: + compatible: + items: + - pattern: "^lpddr5-[0-9a-f]{2},[0-9a-f]{4}$" + - const: jedec,lpddr5 + + serial-id: + $ref: /schemas/types.yaml#/definitions/uint32-array + description: + Serial IDs read from Mode Registers 47 through 54. One byte per uint32 + cell (i.e. <MR47 MR48 MR49 MR50 MR51 MR52 MR53 MR54>). + maxItems: 8 + items: + minimum: 0 + maximum: 255 + +required: + - compatible + - density + - io-width + +unevaluatedProperties: false + +examples: + - | + lpddr { + compatible = "lpddr5-01,0200", "jedec,lpddr5"; + density = <8192>; + io-width = <8>; + revision-id = <2 0>; + serial-id = <3 1 0 0 0 0 0 0>; + }; -- 2.31.0