linux-kernel - Re: [PATCH 3/3] ARM: dts: omap4-sdp: add dynamic pin states for uart3/4

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Message-ID: <20130718090408.GU7656@atomide.com>
Date:	Thu, 18 Jul 2013 02:04:08 -0700
From:	Tony Lindgren <tony@...mide.com>
To:	Grygorii Strashko <grygorii.strashko@...com>
Cc:	Kevin Hilman <khilman@...aro.org>,
	linux-arm-kernel@...ts.infradead.org, linux-omap@...r.kernel.org,
	linux-kernel@...r.kernel.org, devicetree-discuss@...ts.ozlabs.org,
	Benoit Cousson <benoit.cousson@...aro.org>,
	Linus Walleij <linus.walleij@...aro.org>,
	Stephen Warren <swarren@...dotorg.org>
Subject: Re: [PATCH 3/3] ARM: dts: omap4-sdp: add dynamic pin states for
 uart3/4

* Grygorii Strashko <grygorii.strashko@...com> [130718 02:01]:
> On 07/18/2013 11:09 AM, Tony Lindgren wrote:
> 
> Don't think it's debug code - IO chain need to be rearmed after each
> PRCM IO IRQ - otherwise IO wakeup events may be lost (at least on
> OMAP4, OMAP5 requires more complex handling(( ).

Nope, only after the mux register changes. I've verified it on
am3730 with off-idle for both serial and wl12xx.
 
> I didn't pick up your padconf patches yet -seems i need to be in sync :)

Well you need those for proper wake-up event support..

> Below the diff I used to verify IO wake up (It follows old IO daisy
> chain hanlding models in hwmod before DT):

..then these changes not needed with the pinctrl-single changes.

Regards,

Tony
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