linux-kernel - [PATCH v2 2/2] dt-bindings: i2c: Update documentation for "mv78230-a0-i2c"

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Message-Id: <20170928213605.22874-3-kalyan.kinthada@alliedtelesis.co.nz>
Date:   Fri, 29 Sep 2017 10:36:05 +1300
From:   Kalyan Kinthada <kalyan.kinthada@...iedtelesis.co.nz>
To:     jason@...edaemon.net, andrew@...n.ch,
        gregory.clement@...e-electrons.com,
        sebastian.hesselbarth@...il.com, robh+dt@...nel.org,
        mark.rutland@....com, linux@...linux.org.uk, wsa@...-dreams.de,
        devicetree@...r.kernel.org
Cc:     linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-i2c@...r.kernel.org,
        Chris Packham <chris.packham@...iedtelesis.co.nz>,
        Kalyan Kinthada <kalyan.kinthada@...iedtelesis.co.nz>
Subject: [PATCH v2 2/2] dt-bindings: i2c: Update documentation for "mv78230-a0-i2c"

This commit modifies the documentation for
"marvell,mv78230-a0-i2c" compatible string.

The "marvell,mv78230-a0-i2c" compatible string enables the workaround
for an i2c repeated start timing violation, but unlike
"marvell,mv78230-i2c" it disables the i2c offload support. This is
applicable to a number of SoCs such as early revisions of the Armada XP
and the Armada 38x.

Signed-off-by: Kalyan Kinthada <kalyan.kinthada@...iedtelesis.co.nz>
---
 Documentation/devicetree/bindings/i2c/i2c-mv64xxx.txt | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/Documentation/devicetree/bindings/i2c/i2c-mv64xxx.txt b/Documentation/devicetree/bindings/i2c/i2c-mv64xxx.txt
index 5c30026921ae..c6cbab17ed0a 100644
--- a/Documentation/devicetree/bindings/i2c/i2c-mv64xxx.txt
+++ b/Documentation/devicetree/bindings/i2c/i2c-mv64xxx.txt
@@ -10,10 +10,12 @@ Required properties :
                      - "marvell,mv64xxx-i2c"
                      - "marvell,mv78230-i2c"
                      - "marvell,mv78230-a0-i2c"
-                       * Note: Only use "marvell,mv78230-a0-i2c" for a
-                         very rare, initial version of the SoC which
-                         had broken offload support.  Linux
-                         auto-detects this and sets it appropriately.
+                       * Note: Use "marvell,mv78230-a0-i2c" for
+                         controller which do not support offload
+                         but still have the i2c repeated start
+                         timing violation issue, such as the
+                         ones found in the Armada XP A0 and the
+                         Armada 38x SoCs.
  - interrupts      : The interrupt number
 
 Optional properties :
-- 
2.14.1