linux-kernel - [PATCH] dt-bindings: i2c: Add armada-38x i2c binding

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Date:   Fri, 22 Sep 2017 14:04:29 +1200
From:   Kalyan Kinthada <kalyan.kinthada@...iedtelesis.co.nz>
To:     devicetree@...r.kernel.org
Cc:     wsa@...-dreams.de, robh+dt@...nel.org, pawel.moll@....com,
        mark.rutland@....com, ijc+devicetree@...lion.org.uk,
        galak@...eaurora.org, linux-i2c@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Chris Packham <chris.packham@...iedtelesis.co.nz>,
        Kalyan Kinthada <kalyan.kinthada@...iedtelesis.co.nz>
Subject: [PATCH] dt-bindings: i2c: Add armada-38x i2c binding

All armada-38x variants(380, 385, 388) SoCs have an issue
in i2c controller which violates the i2c repeated start timing.

This errata is fixed in the i2c-mv64xxx driver but enabled
only for devices with compatible string "marvell,mv78230-i2c".

This patch introduces a new compatible string
"marvell,armada-38x-i2c" for the i2c controller on armada-38x SoCs
so that the workaound is enabled.

Signed-off-by: Kalyan Kinthada <kalyan.kinthada@...iedtelesis.co.nz>
---
 Documentation/devicetree/bindings/i2c/i2c-mv64xxx.txt | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Documentation/devicetree/bindings/i2c/i2c-mv64xxx.txt b/Documentation/devicetree/bindings/i2c/i2c-mv64xxx.txt
index 5c30026921..fc100b6bdb 100644
--- a/Documentation/devicetree/bindings/i2c/i2c-mv64xxx.txt
+++ b/Documentation/devicetree/bindings/i2c/i2c-mv64xxx.txt
@@ -14,6 +14,7 @@ Required properties :
                          very rare, initial version of the SoC which
                          had broken offload support.  Linux
                          auto-detects this and sets it appropriately.
+                     - "marvell,armada-38x-i2c"
  - interrupts      : The interrupt number
 
 Optional properties :
-- 
2.14.1