From: Greg Kroah-Hartman <gregkh-hQyY1W1yCW8ekmWlsbkhG0B+6BGkLq7r@public.gmane.org>
To: linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Cc: Greg Kroah-Hartman
<gregkh-hQyY1W1yCW8ekmWlsbkhG0B+6BGkLq7r@public.gmane.org>,
stable-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
Gregory CLEMENT
<gregory.clement-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8@public.gmane.org>,
Arnd Bergmann <arnd-r2nGTMty4D4@public.gmane.org>,
devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
Jason Cooper <jason-NLaQJdtUoK4Be96aLqz0jA@public.gmane.org>
Subject: [PATCH 3.12 099/133] i2c: mv64xxx: Document the newly introduced Armada XP A0 compatible
Date: Tue, 4 Feb 2014 13:08:20 -0800 [thread overview]
Message-ID: <20140204210739.834494126@linuxfoundation.org> (raw)
In-Reply-To: <20140204210737.008598235-hQyY1W1yCW8ekmWlsbkhG0B+6BGkLq7r@public.gmane.org>
3.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Gregory CLEMENT <gregory.clement-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8@public.gmane.org>
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-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8@public.gmane.org>
Acked-by: Arnd Bergmann <arnd-r2nGTMty4D4@public.gmane.org>
cc: devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Fixes: 930ab3d403ae (i2c: mv64xxx: Add I2C Transaction Generator support)
Signed-off-by: Jason Cooper <jason-NLaQJdtUoK4Be96aLqz0jA@public.gmane.org>
Signed-off-by: Greg Kroah-Hartman <gregkh-hQyY1W1yCW8ekmWlsbkhG0B+6BGkLq7r@public.gmane.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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parent reply other threads:[~2014-02-04 21:08 UTC|newest]
Thread overview: expand[flat|nested] mbox.gz Atom feed
[parent not found: <20140204210737.008598235-hQyY1W1yCW8ekmWlsbkhG0B+6BGkLq7r@public.gmane.org>]
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