linux-kernel - Re: [STLinux Kernel] [PATCH 06/12] watchdog: bindings: Supply knowledge of a third supported device

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Message-ID: <20150507191909.GC16220@x1>
Date:	Thu, 7 May 2015 20:19:09 +0100
From:	Lee Jones <lee.jones@...aro.org>
To:	Peter Griffin <peter.griffin@...aro.org>
Cc:	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	devicetree@...r.kernel.org, kernel@...inux.com,
	rtc-linux@...glegroups.com, a.zummo@...ertech.it,
	daniel.lezcano@...aro.org, wim@...ana.be, tglx@...utronix.de,
	linux@...ck-us.net, linux-watchdog@...r.kernel.org
Subject: Re: [STLinux Kernel] [PATCH 06/12] watchdog: bindings: Supply
 knowledge of a third supported device - clocksource

> > Signed-off-by: Lee Jones <lee.jones@...aro.org>
> > ---
> >  Documentation/devicetree/bindings/watchdog/st_lpc_wdt.txt | 15 +++++++++------
> >  1 file changed, 9 insertions(+), 6 deletions(-)
> > 
> > diff --git a/Documentation/devicetree/bindings/watchdog/st_lpc_wdt.txt b/Documentation/devicetree/bindings/watchdog/st_lpc_wdt.txt
> > index 388c88a..0b1a784 100644
> > --- a/Documentation/devicetree/bindings/watchdog/st_lpc_wdt.txt
> > +++ b/Documentation/devicetree/bindings/watchdog/st_lpc_wdt.txt
> > @@ -1,20 +1,23 @@
> >  STMicroelectronics Low Power Controller (LPC) - Watchdog
> >  ========================================================
> >  
> > -LPC currently supports Watchdog OR Real Time Clock functionality.
> > +LPC currently supports Watchdog OR Real Time Clock OR Clocksource
> > +functionality.
> >  
> >  [See: ../rtc/rtc-st-lpc.txt for RTC options]
> > +[See: ../timer/st,stih407-lpc for Clocksource options]
> >  
> >  Required properties
> >  
> > -- compatible 	: Must be one of: "st,stih407-lpc" "st,stih416-lpc"
> > -				  "st,stih415-lpc" "st,stid127-lpc"
> > +- compatible 	: Must be one of: "st,stih407-lpc"
> 
> The same comment as the RTC DT patch, you are removing the compatibles
> documentation for the other supported platforms like stih416-lpc.
> AFAIK they are required in the driver to get the correct sysconfig register.

That's intentional.  I haven't yet tested any of this IP on
STiH41{5,6} & STiH127.  Due to lack of documentation, I'm not even
sure if this IP even exists on some of the other platforms.  I will
add them back when support is added to both driver and DTB and I've
been able to test them.

-- 
Lee Jones
Linaro STMicroelectronics Landing Team Lead
Linaro.org │ Open source software for ARM SoCs
Follow Linaro: Facebook | Twitter | Blog
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