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@chromium.org ---
Changes in v7: - Drop unnecessary | - Add a blank line between properties
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 | 13 +++++++++++++ 1 file changed, 13 insertions(+)
diff --git a/dtschema/schemas/memory.yaml b/dtschema/schemas/memory.yaml index 1d74410..b3bf3c9 100644 --- a/dtschema/schemas/memory.yaml +++ b/dtschema/schemas/memory.yaml @@ -35,6 +35,19 @@ patternProperties: 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