linux-kernel - [PATCH v2 2/2] dt-bindings: edac: Aspeed AST2500

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Message-Id: <1547743097-5236-3-git-send-email-schaecsn@gmx.net>
Date:   Thu, 17 Jan 2019 08:38:17 -0800
From:   Stefan Schaeckeler <schaecsn@....net>
To:     Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Joel Stanley <joel@....id.au>,
        Andrew Jeffery <andrew@...id.au>,
        Borislav Petkov <bp@...en8.de>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-aspeed@...ts.ozlabs.org, linux-edac@...r.kernel.org
Cc:     Stefan M Schaeckeler <sschaeck@...co.com>
Subject: [PATCH v2 2/2] dt-bindings: edac: Aspeed AST2500

From: Stefan M Schaeckeler <sschaeck@...co.com>

Add support for EDAC on the Aspeed AST2500 SoC.

Signed-off-by: Stefan M Schaeckeler <sschaeck@...co.com>
---
 .../bindings/edac/aspeed-sdram-edac.txt       | 25 +++++++++++++++++++
 1 file changed, 25 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/edac/aspeed-sdram-edac.txt

diff --git a/Documentation/devicetree/bindings/edac/aspeed-sdram-edac.txt b/Documentation/devicetree/bindings/edac/aspeed-sdram-edac.txt
new file mode 100644
index 000000000000..6a0f3d90d682
--- /dev/null
+++ b/Documentation/devicetree/bindings/edac/aspeed-sdram-edac.txt
@@ -0,0 +1,25 @@
+Aspeed AST2500 SoC EDAC node
+
+The Aspeed AST2500 SoC supports DDR3 and DDR4 memory with and without ECC (error
+correction check).
+
+The memory controller supports SECDED (single bit error correction, double bit
+error detection) and single bit error auto scrubbing by reserving 8 bits for
+every 64 bit word (effectively reducing available memory to 8/9).
+
+Note, the bootloader must configure ECC mode in the memory controller.
+
+
+Required properties:
+- compatible: should be "aspeed,ast2500-sdram-edac"
+- reg:        sdram controller register set should be <0x1e6e0000 0x174>
+- interrupts: should be AVIC interrupt #0
+
+
+Example:
+
+	edac: sdram@...e0000 {
+		compatible = "aspeed,ast2500-sdram-edac";
+		reg = <0x1e6e0000 0x174>;
+		interrupts = <0>;
+	};
-- 
2.19.1