linux-kernel - Re: [PATCH v2 2/2] arm64: dts: hi6220: add resets property into dwmmc nodes

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Message-ID: <20161028123422.GA22734@leoy-linaro>
Date:   Fri, 28 Oct 2016 20:34:23 +0800
From:   Leo Yan <leo.yan@...aro.org>
To:     Jaehoon Chung <jh80.chung@...sung.com>
Cc:     Vincent Guittot <vincent.guittot@...aro.org>,
        John Stultz <john.stultz@...aro.org>,
        Guodong Xu <guodong.xu@...aro.org>,
        Wei Xu <xuwei5@...ilicon.com>,
        Rob Herring <robh+dt@...nel.org>,
        Rob Herring <rob.herring@...aro.org>,
        Mark Rutland <mark.rutland@....com>,
        Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will.deacon@....com>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
        Xinliang Liu <xinliang.liu@...aro.org>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        Fathi Boudra <fathi.boudra@...aro.org>,
        LAK <linux-arm-kernel@...ts.infradead.org>,
        Ulf Hansson <ulf.hansson@...aro.org>
Subject: Re: [PATCH v2 2/2] arm64: dts: hi6220: add resets property into
 dwmmc nodes

On Fri, Oct 28, 2016 at 08:52:49PM +0900, Jaehoon Chung wrote:

[...]

> >> Could you check the below thing..
> >>
> >>         /* find reset controller when exist */
> >> -       pdata->rstc = devm_reset_control_get_optional(dev, NULL);
> >> +       pdata->rstc = devm_reset_control_get_optional(dev, "dwmci-reset");
> >>         if (IS_ERR(pdata->rstc)) {
> >>                 if (PTR_ERR(pdata->rstc) == -EPROBE_DEFER)
> >>                         return ERR_PTR(-EPROBE_DEFER);
> > 
> > Confirmed with this fixing, the kernel can bootup successfully.
> > 
> > Thanks for this.
> 
> Thanks for checking this..If this approach is not bad, i will send the patch.
> Or if there are other good approaches, let me know, plz.

I'd like Guodong and John to confirm for Hikey specific. I have no
knowledge for this so cannot answer.

Thanks,
Leo Yan