diff mbox series

[3/4] dt-bindings: memory: Add jedec,lpddr4 and jedec,lpddr5 bindings

Message ID 20220831013359.1807905-4-jwerner@chromium.org
State Superseded
Headers show
Series [1/4] dt-bindings: memory: Factor out common properties of LPDDR bindings | expand

Commit Message

Julius Werner Aug. 31, 2022, 1:33 a.m. UTC 
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@chromium.org>
---
 .../ddr/jedec,lpddr-props.yaml                |  4 ++
 .../memory-controllers/ddr/jedec,lpddr4.yaml  | 36 ++++++++++++++
 .../memory-controllers/ddr/jedec,lpddr5.yaml  | 48 +++++++++++++++++++
 3 files changed, 88 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
diff mbox series

Patch

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 0c7d2feafd77c8..e1182e75ca1a3f 100644
--- a/Documentation/devicetree/bindings/memory-controllers/ddr/jedec,lpddr-props.yaml
+++ b/Documentation/devicetree/bindings/memory-controllers/ddr/jedec,lpddr-props.yaml
@@ -53,9 +53,13 @@  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..860300cebee754
--- /dev/null
+++ b/Documentation/devicetree/bindings/memory-controllers/ddr/jedec,lpddr4.yaml
@@ -0,0 +1,36 @@ 
+# 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
+
+allOf:
+  - $ref: "jedec,lpddr-props.yaml#"
+
+maintainers:
+  - Krzysztof Kozlowski <krzk@kernel.org>
+
+properties:
+  compatible:
+    items:
+      - pattern: "^lpddr4-[0-9a-f]{2},[0-9a-f]{4}$"
+      - const: jedec,lpddr4
+
+required:
+  - compatible
+  - density
+  - io-width
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    lpddr4 {
+        compatible = "lpddr4-ff,0100", "jedec,lpddr4";
+        density = <8192>;
+        io-width = <16>;
+        manufacturer-id = <255>;
+        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..ae3894bb346d5e
--- /dev/null
+++ b/Documentation/devicetree/bindings/memory-controllers/ddr/jedec,lpddr5.yaml
@@ -0,0 +1,48 @@ 
+# 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
+
+allOf:
+  - $ref: "jedec,lpddr-props.yaml#"
+
+maintainers:
+  - Krzysztof Kozlowski <krzk@kernel.org>
+
+properties:
+  compatible:
+    items:
+      - pattern: "^lpddr5-[0-9a-f]{2},[0-9a-f]{4}$"
+      - 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>).
+    minItems: 8
+    maxItems: 8
+    items:
+      minimum: 0
+      maximum: 255
+
+required:
+  - compatible
+  - density
+  - io-width
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    lpddr4 {
+        compatible = "lpddr5-01,0200", "jedec,lpddr5";
+        density = <8192>;
+        io-width = <8>;
+        manufacturer-id = <1>;
+        revision-id = <2 0>;
+        serial-id = <3 1 0 0 0 0 0 0>;
+    };