linux-kernel - Re: Gemini Soc timers

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Message-ID: <CACRpkdbf2CfT7fJ6wAC3WB9=-Cp0A5xZAO1-Rh78o-U26Fr0Ag@mail.gmail.com>
Date:	Fri, 10 Jul 2015 10:48:26 +0200
From:	Linus Walleij <linus.walleij@...aro.org>
To:	Roman Yeryomin <roman@...em.lv>
Cc:	Hans Ulli Kroll <ulli.kroll@...glemail.com>,
	Arnd Bergmann <arnd@...db.de>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	Felix Fietkau <nbd@...nwrt.org>,
	"rtc-linux@...glegroups.com" <rtc-linux@...glegroups.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Alexandre Belloni <alexandre.belloni@...e-electrons.com>,
	Russell King <rmk+kernel@....linux.org.uk>
Subject: Re: Gemini Soc timers

On Thu, Jul 9, 2015 at 6:48 PM, Roman Yeryomin <roman@...em.lv> wrote:
> [Me]
>> As usual they are just keeping it out of mainline, and this
>> is adding sched_clock() and other goodies so should
>> probably be upstreamed ASAP.
>
>
> This is what I initially submitted here.

Ah. I missed part of the start of the discussion it seems.

> But Arnd wanted to see a smaller patch which only fixes gemini timer issue
> (t.i. shed clock being 100Hz instead of 25MHz).
> Also I've submitted 4.1 support yesterday, but patches didn't change much
> comparing to 3.18

On the other hand I think the bigger patch is OK actually.

I rewrote the timer support some time back and did not get
anyone to test it properly at the time, so the patch went in
untested. So this is a fix.

I think this should be applied as-is since you can actually
test the whole thing on real hardware, and also add:

Fixes: f3372c01816e "ARM: gemini: convert to GENERIC_CLOCKEVENTS"
Reviewed-by: Linus Walleij <linus.walleij@...aro.org>

> I would love to see all those patches/drivers in mainline - tell me where do
> I submit all that :)

I recently looked at some of the patch stacks in OpenWRT and
get a bit sad that the stuff did not go upstream, so I am ready
to help in any way I can.

Anything GPIO related I am ready to help in reviewing/applying
and I will also help out with ARM32 if I can. Sadly I do not have
a Gemini system.

Yours,
Linus Walleij
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