* [PATCH 3.13 110/140] i2c: mv64xxx: Document the newly introduced Armada XP A0 compatible
[not found] <20140204211036.967663852@linuxfoundation.org>
@ 2014-02-04 21:11 ` Greg Kroah-Hartman
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From: Greg Kroah-Hartman @ 2014-02-04 21:11 UTC (permalink / raw)
To: linux-kernel
Cc: Greg Kroah-Hartman, stable, Gregory CLEMENT, Arnd Bergmann,
devicetree, Jason Cooper
3.13-stable review patch. If anyone has any objections, please let me know.
------------------
From: Gregory CLEMENT <gregory.clement@free-electrons.com>
commit f8b94beb7e6a374cb0de531b72377c49857b35ca upstream.
The first variants of Armada XP SoCs (A0 stepping) have issues related
to the i2c controller which prevent to use the offload mechanism and
lead to a kernel hang during boot.
The commit introduces a new the compatible string
marvell,mv78230-a0-i2c for the i2c controller.
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
cc: devicetree@vger.kernel.org
Fixes: 930ab3d403ae (i2c: mv64xxx: Add I2C Transaction Generator support)
Signed-off-by: Jason Cooper <jason@lakedaemon.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
Documentation/devicetree/bindings/i2c/i2c-mv64xxx.txt | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
--- a/Documentation/devicetree/bindings/i2c/i2c-mv64xxx.txt
+++ b/Documentation/devicetree/bindings/i2c/i2c-mv64xxx.txt
@@ -5,7 +5,11 @@ Required properties :
- reg : Offset and length of the register set for the device
- compatible : Should be "marvell,mv64xxx-i2c" or "allwinner,sun4i-i2c"
- or "marvell,mv78230-i2c"
+ or "marvell,mv78230-i2c" or "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.
- interrupts : The interrupt number
Optional properties :
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2014-02-04 21:11 ` [PATCH 3.13 110/140] i2c: mv64xxx: Document the newly introduced Armada XP A0 compatible Greg Kroah-Hartman
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