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-rw-r--r--Documentation/devicetree/bindings/memory-controllers/ddr/jedec,ddr4.yaml34
1 files changed, 34 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/memory-controllers/ddr/jedec,ddr4.yaml b/Documentation/devicetree/bindings/memory-controllers/ddr/jedec,ddr4.yaml
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@@ -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: DDR4 SDRAM compliant to JEDEC JESD79-4D
+
+maintainers:
+ - Krzysztof Kozlowski <krzk@kernel.org>
+
+allOf:
+ - $ref: jedec,sdram-props.yaml#
+
+properties:
+ compatible:
+ items:
+ - pattern: "^ddr4-[0-9a-f]{4},[a-z]{1,20}-[0-9a-f]{2}$"
+ - const: jedec,ddr4
+
+required:
+ - compatible
+ - density
+ - io-width
+
+unevaluatedProperties: false
+
+examples:
+ - |
+ ddr {
+ compatible = "ddr4-00ff,azaz-ff", "jedec,ddr4";
+ density = <8192>;
+ io-width = <8>;
+ };