linux-kernel - Re: [PATCH v2 2/2] pwm: add this patch to support the new pwm of Rockchip SoCs

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Message-ID: <20140729102212.GB21182@ulmo.nvidia.com>
Date:	Tue, 29 Jul 2014 12:22:13 +0200
From:	Thierry Reding <thierry.reding@...il.com>
To:	caesar <caesar.wang@...k-chips.com>
Cc:	Doug Anderson <dianders@...omium.org>, linux-pwm@...r.kernel.org,
	"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
	"linux-doc@...r.kernel.org" <linux-doc@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2 2/2] pwm: add this patch to support the new pwm of
 Rockchip SoCs

On Mon, Jul 28, 2014 at 07:19:18PM +0800, caesar wrote:
> Doug,
> 在 2014年07月28日 12:01, Doug Anderson 写道:
> >Caesar,
> >
> >On Sun, Jul 27, 2014 at 7:00 AM, caesar <caesar.wang@...k-chips.com> wrote:
> >>/*I think will be show the faill log:->
> >>
> >>* rockchip-pwm ff9301a0.pwm: can't request region for resource [mem
> >>0xff9301a0-0xff93019f]
> >>*/
> >>
> >>pc->base = devm_ioremap_resource(dev, regs);
> >Did you actually code this up and try it and get this error?
> Yeah.

This should work if you properly set up the PWM subregion as a child of
the LCDC region, which is what MFD will do for you.

Thierry

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