[PATCH v3 06/19] dt-bindings: memory: introduce DDR4
From: Clément Le Goffic <hidden>
Date: 2025-07-22 14:07:08
Also in:
linux-arm-kernel, linux-clk, linux-doc, linux-perf-users, lkml
Subsystem:
memory controller drivers, open firmware and flattened device tree bindings, the rest · Maintainers:
Krzysztof Kozlowski, Rob Herring, Conor Dooley, Linus Torvalds
Introduce JEDEC compliant DDR bindings, that use new memory-props binding. Signed-off-by: Clément Le Goffic <redacted> --- .../memory-controllers/ddr/jedec,ddr4.yaml | 34 ++++++++++++++++++++++ 1 file changed, 34 insertions(+)
diff --git a/Documentation/devicetree/bindings/memory-controllers/ddr/jedec,ddr4.yaml b/Documentation/devicetree/bindings/memory-controllers/ddr/jedec,ddr4.yaml
new file mode 100644
index 000000000000..117af9ac599b
--- /dev/null
+++ b/Documentation/devicetree/bindings/memory-controllers/ddr/jedec,ddr4.yaml@@ -0,0 +1,34 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/memory-controllers/ddr/jedec,ddr4.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: DDR3 SDRAM compliant to JEDEC JESD79-4D + +maintainers: + - Krzysztof Kozlowski <krzk@kernel.org> + +allOf: + - $ref: jedec,memory-props.yaml# + +properties: + compatible: + items: + - pattern: "^ddr4-[0-9a-f]{2},[0-9a-f]{4}$" + - const: jedec,ddr4 + +required: + - compatible + - density + - io-width + +unevaluatedProperties: false + +examples: + - | + ddr { + compatible = "ddr4-ff,000f", "jedec,ddr4"; + density = <8192>; + io-width = <8>; + };
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2.43.0