linux-kernel - Re: [PATCH] ARM: pxa: support 806MHz operating points for PXA31x processors A2 stepping

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Message-ID: <AANLkTin7E9j6Q32JR-t13ekpdveiSrPCqAorT08DdM=6@mail.gmail.com>
Date:	Tue, 22 Feb 2011 21:19:01 +0800
From:	Eric Miao <eric.y.miao@...il.com>
To:	Axel Lin <axel.lin@...il.com>,
	Haojian Zhuang <haojian.zhuang@...vell.com>
Cc:	Igor Grinberg <grinberg@...pulab.co.il>,
	linux-kernel@...r.kernel.org,
	Russell King <linux@....linux.org.uk>,
	linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH] ARM: pxa: support 806MHz operating points for PXA31x
 processors A2 stepping

>> Another thing (which could be related to the patch) is the package marking.
>> We have PXA3xx SoCs marked A2 stepping, but C624, which means that the
>> highest running frequency should not exceed 624MHz.
>
> This means not all PXA310 A2 stepping supports 806Mhz.
> Can we differentiate the Cxxx option in software?
>
>> What is your PXA3xx A2 marking in respect to Cxxx option?
>
> Mine is 88AP310-A2-BGK2C806.
>

Haojian,

Can you help check on the stepping/markings on these processors
to see which of them supports 806MHz, reliably?

- eric
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