Subject: [PATCH] omap3_beagle: Init only uart3 used for console

From: [email-masked] (Tony Lindgren)
Date: Mon, 5 Mar 2012 12:51:49 -0800

* Kevin Hilman <[email-masked]> [120305 11:28]:
> "Govindraj.R" <[email-masked]> writes:
> 
> > From: "Govindraj.R" <[email-masked]>
> >
> > On beagle some of uart mux lines are used for other
> > purpose so init only uart3.
> 
> OK, but you should also be clear that this patch is effectively
> disabling all UARTS (except UART3) by defatul, which I'm not sure all
> Beagle users will be happy about.
> 
> > Uart2 rx line clashes with gpio_147 used for usb ehci
> > phy reset. Initializing uart2 pad_mux lines can break
> > ehci module on beagle xm.
> > (gpio_147 is available on uart2_rx in mode4 reference 
> > mux34xx.c -> uart2_rx.gpio_147)
> 
> As Koen mentioned, this conflict only exists on certain boards, so
> you should be clear that this is just an example.

OK, thanks for the comments. Also it's a bit clear if
this really is safe to do on all beagles.
 
> > Cc: Tony Lindgren <[email-masked]>
> > Cc: Kevin Hilman <[email-masked]>
> > Tested-by: Peter Ujfalusi <[email-masked]>
> > Tested-by: Robert Nelson <[email-masked]>
> > Signed-off-by: Govindraj.R <[email-masked]>
> 
> [...]
> 
> > +
> > +static inline void board_serial_init(void)
> 
> Should be __init
> 
> [...]
> 
> > +static inline void board_serial_init(void)
> 
> here too.

..so dropping the patch for now until these are fixed
and we have some tested-bys for non-xm beagles too.

Regards,

Tony