RE: [PATCH 2/7] omap4: Temporary fix silicon version detection

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> -----Original Message-----
> From: Cousson, Benoit
> Sent: Thursday, September 09, 2010 5:17 PM
> To: Balbi, Felipe
> Cc: Shilimkar, Santosh; linux-omap@xxxxxxxxxxxxxxx; tony@xxxxxxxxxxx;
> khilman@xxxxxxxxxxxxxxxxxxx
> Subject: Re: [PATCH 2/7] omap4: Temporary fix silicon version detection
> 
> Hi Santosh,
> 
> On 9/9/2010 1:42 PM, Felipe Balbi wrote:
> > Hi,
> >
> > On Thu, Sep 09, 2010 at 06:23:10AM -0500, Santosh Shilimkar wrote:
> >> @@ -308,6 +308,16 @@ static void __init omap4_check_revision(void)
> >> 	hawkeye = (idcode>>  12)&  0xffff;
> >> 	rev = (idcode>>  28)&  0xff;
> >>
> >> +	/*
> >> +	 * FIXME: This patch should be reverted later.
> >> +	 * Few initial ES2.0 samples IDCODE is same as ES1.0
> >> +	 * Use ARM register to detect the correct ES version
> >> +	 */
> >
> > I wonder if it actually doesn't make sense to keep this in tree, the
> > overhead is minimum when rev is set correctly and it's safe for the
> > initial es2.0 samples which are buggy.
> 
> Yep, I agree with that, if some early ES2 samples are already out there,
> we will have no way to control the device upgrade in the future. So we
> will still have to support these early buggy devices just in case.
> 
Felipe is suggesting not to add this support where as you want to
have this support.

Sorry if I haven't understood the comment. Care to clarify

Regards,
Santosh

 

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