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 v6:
- Use a number of bits instead of a string property
- Fix inidcates typo
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 | 15 +++++++++++++--
1 file changed, 13 insertions(+), 2 deletions(-)
diff --git a/dtschema/schemas/memory.yaml b/dtschema/schemas/memory.yaml
index 1d74410..1a48b1c 100644
--- a/dtschema/schemas/memory.yaml
+++ b/dtschema/schemas/memory.yaml
@@ -31,10 +31,21 @@ patternProperties:
numa-node-id:
$ref: types.yaml#/definitions/uint32
- description:
+ description: |
For the purpose of identification, each NUMA node is associated with
a unique token known as a node id.
-
+ ecc-detection-bits:
+ default: 0
+ description: |
+ If present, this indicates the number of bits of memory error which
+ can be detected and reported by the Error-Correction Code (ECC) memory
+ subsystem (typically 0, 1 or 2).
+ ecc-correction-bits:
+ default: 0
+ description: |
+ If present, this indicates the number of bits of memory error which
+ can be corrected by the Error-Correction Code (ECC) memory subsystem
+ (typically 0, 1 or 2).
required:
- device_type
--
2.42.0.283.g2d96d420d3-goog
