dt-binding: edac: add NPCM ECC documentation

Add device tree documentation for Nuvoton BMC ECC

OpenBMC-Staging-Count: 9
Signed-off-by: George Hung <george.hung@quantatw.com>
Reviewed-by: Avi Fishman <avifishman70@gmail.com>
Signed-off-by: Joel Stanley <joel@jms.id.au>

1 files changed, 17 insertions, 0 deletions

diff --git a/Documentation/devicetree/bindings/edac/npcm7xx-sdram-edac.txt b/Documentation/devicetree/bindings/edac/npcm7xx-sdram-edac.txt
new file mode 100644
index 000000000000..dd4dac59a5bd
--- /dev/null
+++ b/Documentation/devicetree/bindings/edac/npcm7xx-sdram-edac.txt
@@ -0,0 +1,17 @@
+Nuvoton NPCM7xx SoC EDAC device driver
+
+The Nuvoton NPCM7xx SoC supports DDR4 memory with/without ECC and the driver
+uses the EDAC framework to implement the ECC detection and corrtection.
+
+Required properties:
+- compatible:	should be "nuvoton,npcm7xx-sdram-edac"
+- reg:		Memory controller register set should be <0xf0824000 0x1000>
+- interrupts:	should be MC interrupt #25
+
+Example:
+
+	mc: memory-controller@f0824000 {
+		compatible = "nuvoton,npcm7xx-sdram-edac";
+		reg = <0xf0824000 0x1000>;
+		interrupts = <0 25 4>;
+	};