Re: [PATCH] lm85: extend to support emc6d103 chips

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>>> On 18.02.11 at 16:38, Guenter Roeck <guenter.roeck@xxxxxxxxxxxx> wrote:
> On Fri, Feb 18, 2011 at 09:54:56AM -0500, Jean Delvare wrote:
>> Hallo Jan,
>> 
>> On Fri, 18 Feb 2011 08:18:26 +0000, Jan Beulich wrote:
>> > The interface is identical emc6d102, so all that needs to be added are
>> > some definitions and their uses.
>> > 
>> > Registers apparently missing in emc6d103:A2 compared to emc6d103:A0,
>> > emc6d103:A1, and emc6d102 (according to the data sheets), but used
>> > unconditionally in the driver: 62[5:7], 6D[0:7], and 6E[0:7]. For that
>> > reason, A2 stepping chips don't get enabled for the time being.
>> 
>> The EMC6D103 datasheet on smsc.com doesn't mention revision A2, so I'm
>> curious where you got this information?
>> 
> Ah, this made me look.
> 
> This is really EMC6D103S.
> See http://www.smsc.com/media/Downloads_Public/Data_Sheets/6d103s.pdf.
> 
> So it should not be listed as step A2, but separately as EMC6D103S
> (and it does not have to be mentioned in the code for now, since it is
> really a different chip).

No. While revision 0.3 indeed only talks about A0 and A1, revision
0.4 even states 0x6A (where 0x68 is A0 and 0x69 is A1) to be the
default in the version/stepping register.

Jan


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