Some memories provide ECC detection and/or correction. For software which
wants to check memory, it is helpful to see which regions provide this
feature.
Add this as a property of the /memory nodes, since it presumably follows
the hardware-level memory system.
Signed-off-by: Simon Glass <sjg@xxxxxxxxxxxx>
---
Changes in v5:
- Redo to make this property specific to ECC
- Provide properties both for detection and correction
Changes in v3:
- Add new patch to update the /memory nodes
dtschema/schemas/memory.yaml | 30 ++++++++++++++++++++++++++++++
1 file changed, 30 insertions(+)
diff --git a/dtschema/schemas/memory.yaml b/dtschema/schemas/memory.yaml
index 1d74410..944aa9f 100644
--- a/dtschema/schemas/memory.yaml
+++ b/dtschema/schemas/memory.yaml
@@ -34,7 +34,37 @@ patternProperties:
description:
For the purpose of identification, each NUMA node is associated with
a unique token known as a node id.
+ ecc-detection:
+ $ref: /schemas/types.yaml#/definitions/string
+ enum:
+ - none
+ - single-bit
+ - multi-bit
+ description: |
+ If present, this inidcates the type of memory errors which can be
+ detected and reported by the Error-Correction Code (ECC) memory
+ subsystem:
+ none - No error detection is possible
+ single-bit - Detects and reports single-bit ECC errors
+ multi-bit - Detects and reports multiple-bit ECC errors
+
+ If not present, this is equivalent to 'none'.
+ ecc-correction:
+ $ref: /schemas/types.yaml#/definitions/string
+ enum:
+ - none
+ - single-bit
+ - multi-bit
+ description: |
+ If present, this inidcates the type of memory errors which can be
+ corrected by the Error-Correction Code (ECC) memory subsystem:
+
+ none - No error correction is possible
+ single-bit - Corrects single-bit ECC errors
+ multi-bit - Corrects multiple-bit ECC errors
+
+ If not present, this is equivalent to 'none'.
required:
- device_type
--
2.42.0.rc2.253.gd59a3bf2b4-goog
