[U-Boot-Users] [PATCH 4/6] TQM885D: use calculated cpuclk instead of measuring it

[Wolfgang Denk]

In message <47F3F98010FF784EBEE6526EAAB078D1024F874D at tq-mailsrv.tq-net.de> you wrote:
>
> > Ummm.. it may not be strictly necessary - but does it hurt? Or is it
> > not working?
> 
> To make it work, changes in /cpu/mpc8xx/speed.c would be necessary. I
> send a patch some weeks ago ("TQM885D: Use the OSCM,feeded by EXTAL =3D
>  10 MHz"), which wasn't accepted, because board specific code is
> not allowed in this file.

I asked you to change it in a way that is  not  board  specific,  but
feature-specific.

> Since we only have one quartz on the TQM885D, we could not do 
> reference measurements like on the other TQM8xx boards (which have
> two independent external clock sources). So Measuring the clock with
> the PIT will produce the same result as calculating the clock from 
> the PLL register values.

So it's not working at all and cannot be fixed. So drop it.

> Another point is, that older TQM885D boards use EXTCLK as clock
> source and newer versions EXTAL. If the cpuclk is calculated,
> the same u-boot Image could be used for the older and the newer
> board versions. If cpuclk is measured two different U-Boot images
> would be necessary.

Understood.

Best regards,

Wolfgang Denk

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