linux-kernel - RE: [PATCH v11 3/4] drivers/i2c/busses/i2c-at91.c: add new driver

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Message-ID: <EF2E73589CA71846A15D0B2CDF79505D090EC3D6F6@wm021.weinmann.com>
Date:	Mon, 27 Aug 2012 15:32:11 +0200
From:	"Voss, Nikolaus" <N.Voss@...nmann.de>
To:	"'Yanes Martinez Adrian'" <adrian.yanes@...to.fi>,
	"'ludovic.desroches'" <ludovic.desroches@...el.com>
CC:	"'linux-arm-kernel@...ts.infradead.org'" 
	<linux-arm-kernel@...ts.infradead.org>,
	"'linux-kernel@...r.kernel.org'" <linux-kernel@...r.kernel.org>,
	"'linux-i2c@...r.kernel.org'" <linux-i2c@...r.kernel.org>,
	"'nicolas.ferre@...el.com'" <nicolas.ferre@...el.com>,
	"'ben-linux@...ff.org'" <ben-linux@...ff.org>,
	"'balbi@...com'" <balbi@...com>,
	"'h.feurstein@...il.com'" <h.feurstein@...il.com>,
	"'rmallon@...il.com'" <rmallon@...il.com>,
	"'carsten.behling@...z-fricke.com'" <carsten.behling@...z-fricke.com>
Subject: RE: [PATCH v11 3/4] drivers/i2c/busses/i2c-at91.c: add new driver

Hi Adian,

Yanes Martinez Adrian wrote on Monday, August 27, 2012 2:46 PM:
> Le 08/27/2012 12:40 PM, Yanes Martinez Adrian a écrit :
>> Hi Ludovic,
>>
>>> Tested on at91rm9200, at91sam9261, at91sam9g20 and at91sam9m10 with
>>> eeprom, temperature sensor and rtc devices (and wolfson chip for
>>> sam9g20).
>>
>> concerning the at91rm9200, what was the amount of bytes you
> transmitted?
>>
> 
>> I have only checked that I can communicate with i2c devices so the
>> amount is very low (1-4 bytes).
> 
> IIRC it was from >7 bytes when the issues appeared.
> 
>> Some months ago I performed some testing[1] with the previous version of
>> the patch and the main conclusion was that the absence of PDC in the
>> AT91RM9200 made this driver unusable in such platform.

I didn't get your last post  in that thread. In my opinion RM9200 should really
be excluded from being configured with this driver, what's your opinion
Ludovic?

Regards,
Niko

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