From: grinberg@compulab.co.il (Igor Grinberg)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH] ARM: pxa: support 806MHz operating points for PXA31x processors A2 stepping
Date: Tue, 22 Feb 2011 15:22:05 +0200 [thread overview]
Message-ID: <4D63B87D.8040107@compulab.co.il> (raw)
In-Reply-To: <AANLkTikTHnz+7C-QmXaHwFE0a+pw7U-t2JP11a0qdoyU@mail.gmail.com>
On 02/22/11 12:38, Axel Lin wrote:
> 2011/2/22 Igor Grinberg <grinberg@compulab.co.il>:
>> 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?
Some time ago I spoke with our local Marvell representative... and he said that this
information cannot be retrieved by software.
So this makes me think, that we may be need an option for the platform data
passed from the board (assuming that board should know what SoC is installed).
Or a kernel command line parameter... something much like Eric proposed:
http://www.spinics.net/lists/arm-kernel/msg92900.html
>> What is your PXA3xx A2 marking in respect to Cxxx option?
> Mine is 88AP310-A2-BGK2C806.
nice! :)
--
Regards,
Igor.
prev parent reply other threads:[~2011-02-22 13:22 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-02-15 16:20 [PATCH] ARM: pxa: support 806MHz operating points for PXA31x processors A2 stepping Axel Lin
2011-02-15 16:58 ` Igor Grinberg
2011-02-22 1:12 ` Axel Lin
2011-02-22 8:35 ` Igor Grinberg
2011-02-22 10:38 ` Axel Lin
2011-02-22 13:19 ` Eric Miao
2011-02-23 1:33 ` Haojian Zhuang
2011-02-22 13:22 ` Igor Grinberg [this message]
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