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From:   Medad CChien <medadyoung@gmail.com>
To:     rric@kernel.org, james.morse@arm.com, tony.luck@intel.com,
        mchehab@kernel.org, bp@alien8.de, robh+dt@kernel.org,
        benjaminfair@google.com, yuenn@google.com, venture@google.com,
        KWLIU@nuvoton.com, YSCHU@nuvoton.com, JJLIU0@nuvoton.com,
        KFTING@nuvoton.com, avifishman70@gmail.com, tmaimon77@gmail.com,
        tali.perry1@gmail.com, ctcchien@nuvoton.com
Cc:     linux-edac@vger.kernel.org, linux-kernel@vger.kernel.org,
        devicetree@vger.kernel.org, openbmc@lists.ozlabs.org
Subject: [PATCH v8 2/3] dt-bindings: edac: nuvoton: add NPCM memory controller
Date:   Tue,  3 May 2022 17:47:27 +0800
Message-Id: <20220503094728.926-3-ctcchien@nuvoton.com>
In-Reply-To: <20220503094728.926-1-ctcchien@nuvoton.com>
References: <20220503094728.926-1-ctcchien@nuvoton.com>
Precedence: bulk

Document devicetree bindings for the Nuvoton BMC NPCM memory controller.

Signed-off-by: Medad CChien <ctcchien@nuvoton.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Reviewed-by: Borislav Petkov <bp@alien8.de>
Reviewed-by: Paul Menzel <pmenzel@molgen.mpg.de>
Reviewed-by: Rob Herring <robh@kernel.org>
---
 .../edac/nuvoton,npcm-memory-controller.yaml  | 61 +++++++++++++++++++
 1 file changed, 61 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/edac/nuvoton,npcm-memory-controller.yaml

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..6f37211796a3
--- /dev/null
+++ b/Documentation/devicetree/bindings/edac/nuvoton,npcm-memory-controller.yaml
@@ -0,0 +1,61 @@
+# 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 <ctcchien@nuvoton.com>
+
+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>;
+        };
+    };
-- 
2.17.1