Re: [PATCHv2 1/3] ARM: Translate delay.S into (mostly) C

[Stephen Boyd]

On 11/03/2010 11:27 AM, Will Deacon wrote:
> Hi Stephen,
>
> On Thu, 2010-10-28 at 21:19 +0000, Stephen Boyd wrote:
>> Nico expressed concern that fixed lpj cmdlines will break due to
>> compiler optimizations. That doesn't seem to be the case since
>> before and after this patch I get the same lpj value when running
>> my CPU at 19.2 MHz. That should be sufficiently slow enough to
>> cover any machine running Linux.
>
> I appreciate this is an exceptional case, but there are some lucky
> guys at ARM who (as routinely as they can) boot Linux on sub 1MHz
> hardware. The delay loop is something they're keen to avoid so they do
> make use of the lpj= command line option and would rather it didn't
> break on them.

Do you know if it breaks at that frequency? I don't have any hardware to
test with that goes lower than the stated 19.2 MHz.

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