[v10,1/3] dt-bindings: edac: nuvoton: add NPCM memory controller

Commit Message

Medad Young May 19, 2022, 7:24 a.m. UTC

Document devicetree bindings for the Nuvoton BMC NPCM memory controller.

Signed-off-by: Medad CChien <[e-mail]>
Reviewed-by: Krzysztof Kozlowski <[e-mail]>
---
 .../edac/nuvoton,npcm-memory-controller.yaml  | 62 +++++++++++++++++++
 1 file changed, 62 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/edac/nuvoton,npcm-memory-controller.yaml

Patch

diff --git a/Documentation/devicetree/bindings/edac/nuvoton,npcm-memory-controller.yaml b/Documentation/devicetree/bindings/edac/nuvoton,npcm-memory-controller.yaml
new file mode 100644
index 000000000000..a5c8d332d1c1
--- /dev/null
+++ b/Documentation/devicetree/bindings/edac/nuvoton,npcm-memory-controller.yaml
@@ -0,0 +1,62 @@ 
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/edac/nuvoton,npcm-memory-controller.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Nuvoton NPCM Memory Controller
+
+maintainers:
+  - Medad CChien <[e-mail]>
+  - Stanley Chu <[e-mail]>
+
+description: |
+  The Nuvoton BMC SoC supports DDR4 memory with and without ECC (error
+  correction check).
+
+  The memory controller supports single bit error correction, double bit
+  error detection (in-line ECC in which a section (1/8th) of the memory
+  device used to store data is used for ECC storage).
+
+  Note, the bootloader must configure ECC mode for the memory controller.
+
+properties:
+  compatible:
+    enum:
+      - nuvoton,npcm750-memory-controller
+      - nuvoton,npcm845-memory-controller
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    minItems: 1
+    items:
+      - description: uncorrectable error interrupt
+      - description: correctable error interrupt
+
+  interrupt-names:
+    minItems: 1
+    items:
+      - const: ue
+      - const: ce
+
+required:
+  - compatible
+  - reg
+  - interrupts
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+    ahb {
+        #address-cells = <2>;
+        #size-cells = <2>;
+        mc: memory-controller@f0824000 {
+            compatible = "nuvoton,npcm750-memory-controller";
+            reg = <0x0 0xf0824000 0x0 0x1000>;
+            interrupts = <GIC_SPI 25 IRQ_TYPE_LEVEL_HIGH>;
+        };
+    };