[PATCH 0/3] watchdog: imx2: handle WMCR only being available on i.MX35 and later

[Uwe Kleine-König]

Hello Vladimir,

On Mon, Jan 09, 2017 at 12:55:28PM +0200, Vladimir Zapolskiy wrote:
> On 01/09/2017 11:50 AM, Uwe Kleine-König wrote:
> > Hello,
> > 
> > this is my approach to fix the issue reported by Vladimir Zapolskiy.
> > 
> > IMHO we don't need the third commit because I'm convinced most machines
> > just don't do anything when the WDOG signal becomes active. An affected
> > machine powers off 16 seconds after startup. This would be noticed
> > during development of the bootloader and so I assume all affected
> > machines having bootloaders that make the compat code unimportant.
> > 
> > If you want to know if your machine is affected, do:
> > 
> > 	mw -w $(watchdog_base_addr) 0x10
> 
> is it a command in barebox shell?

barebox cannot do $(watchdog_base_addr), but (on i.MX25) I can do:

	mw -w 0x53fdc000 0x10

. I think the corresponding U-Boot command is:

	mw.w 0x53fdc000 0x10

> > The machines I tested this on (among a few customer boards a
> > Phycore i.MX35 and a Freescale i.MX53 Quick Start Board) don't power off.
> > 
> > I don't have manuals handy for ls1021a, ls1043a and ls1046a but assume
> > they use the i.MX35 type, too. This needs to be fixed before this series
> > is applied.
> > 
> > Compared to Vladimir's patch machines still using board files are fixed,
> > too.
> > 
> 
> This addition can be done on top of my changes, in my version the driver
> ignores WMCR on all machines with board files.
> 
> So now we have two competing series unfortunately...

With mine being the better one, right? :-) 

You didn't update your series for my concerns, so I did it myself
instead of retrying to iterate about the changes I'd like to see on your
version. Feel free to criticise my variant.

Best regards
Uwe

-- 
Pengutronix e.K.                           | Uwe Kleine-König            |
Industrial Linux Solutions                 | http://www.pengutronix.de/  |