[PATCH v4 4/4] memory: Add ECC property

[Simon Glass <sjg@chromium.org>]

Some memories provides ECC 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>
---

(no changes since v3)

Changes in v3:
- Add new patch to update the /memory nodes

 dtschema/schemas/memory.yaml | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/dtschema/schemas/memory.yaml b/dtschema/schemas/memory.yaml
index 1d74410..981af04 100644
--- a/dtschema/schemas/memory.yaml
+++ b/dtschema/schemas/memory.yaml
@@ -34,7 +34,14 @@ patternProperties:
         description:
           For the purpose of identification, each NUMA node is associated with
           a unique token known as a node id.
-
+      attr:
+        $ref: /schemas/types.yaml#/definitions/string-array
+        description: |
+          Attributes possessed by this memory region:
+
+            "single-bit-ecc" - supports single-bit ECC
+            "multi-bit-ecc" - supports multiple-bit ECC
+            "no-ecc" - non-ECC memory
 
     required:
       - device_type
-- 
2.42.0.rc2.253.gd59a3bf2b4-goog