linux-kernel - Re: [PATCH v7 5/7] drm: bridge/dw-hdmi: add support for multi byte register width access

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Date:	Tue, 11 Nov 2014 14:48:02 +0000
From:	Zubair Lutfullah Kakakhel <Zubair.Kakakhel@...tec.com>
To:	Andy Yan <andy.yan@...k-chips.com>, <airlied@...ux.ie>,
	<heiko@...ech.de>, <fabio.estevam@...escale.com>,
	<rmk+kernel@....linux.org.uk>
CC:	<devel@...verdev.osuosl.org>, <devicetree@...r.kernel.org>,
	Arnd Bergmann <arnd@...db.de>, Josh Boyer <jwboyer@...hat.com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	<linux-kernel@...r.kernel.org>, <dri-devel@...ts.freedesktop.org>,
	Inki Dae <inki.dae@...sung.com>,
	<linux-rockchip@...ts.infradead.org>,
	Rob Herring <robh+dt@...nel.org>,
	Sean Paul <seanpaul@...omium.org>, <djkurtz@...gle.com>,
	Philipp Zabel <p.zabel@...gutronix.de>, <ykk@...k-chips.com>,
	Grant Likely <grant.likely@...aro.org>,
	Dave Airlie <airlied@...hat.com>,
	Shawn Guo <shawn.guo@...aro.org>, <jay.xu@...k-chips.com>,
	Lucas Stach <l.stach@...gutronix.de>
Subject: Re: [PATCH v7 5/7] drm: bridge/dw-hdmi: add support for multi byte
 register width access



On 11/11/14 14:46, Andy Yan wrote:
> 
> On 2014年11月11日 22:20, Zubair Lutfullah Kakakhel wrote:
>> Hi Andy,
>>
>> This patch adds the reg-io-width binding.
>>
>> Hence the binding patch should come before it.
>>
>    do you mean that I should put dts binding patch
>    before this patch?

Yes. The patch adding the binding to the Documentation folder comes
before the driver implementing the binding.

ZubairLK

>> On 11/11/14 12:53, Andy Yan wrote:
>>> On rockchip rk3288, only word(32-bit) accesses are
>>> permitted for hdmi registers.  Byte width accesses (writeb,
>>> readb) generate an imprecise external abort.
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