linux-kernel - Re: [PATCH v3] ARC: [plat-hsdk]: Add reset controller node to manage ethernet reset

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Message-ID: <1507209984.3461.13.camel@synopsys.com>
Date:   Thu, 5 Oct 2017 13:26:25 +0000
From:   Eugeniy Paltsev <Eugeniy.Paltsev@...opsys.com>
To:     "Eugeniy.Paltsev@...opsys.com" <Eugeniy.Paltsev@...opsys.com>,
        "Vineet Gupta" <Vineet.Gupta1@...opsys.com>,
        "linux-snps-arc@...ts.infradead.org" 
        <linux-snps-arc@...ts.infradead.org>
CC:     "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "Alexey.Brodkin@...opsys.com" <Alexey.Brodkin@...opsys.com>,
        "robh+dt@...nel.org" <robh+dt@...nel.org>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>
Subject: Re: [PATCH v3] ARC: [plat-hsdk]: Add reset controller node to
 manage ethernet reset

On Thu, 2017-10-05 at 06:04 -0700, Vineet Gupta wrote:
> Hi Eugeniy,
> 
> On 09/22/2017 09:49 AM, Eugeniy Paltsev wrote:
> > DW ethernet controller on HSDK hangs sometimes after SW reset, so
> > add reset node to make possible to reset DW ethernet controller HW.
> > 
> > Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@...opsys.com>
> > ---
> > Changes v2 -> v3:
> >    * Remove v1 suffix as we finaly got rid of v1 suffix in reset
> >      driver and docs.
> >    * Rename reset node to "reset-controller" for consistency with
> >      the other bindings.
> > 
> > Changes v1 -> v2:
> >    * Enable HSDK reset driver in hsdk_defconfig
> 
> Revisiting this given that changes to driver have been merged upstream: we 
> currently carry a reset workaround for axs+ethernet, i.e. your patch
> 
>      ARC: [plat-axs103] Add temporary quirk to reset ethernet IP
> 
> But there's nothing similar for HSDK. IOW, we don't need to revert anything foro 
> hsdk, after this gets applied ?

That’s correct. We don't need to revert anything for hsdk.
We only need to apply this patch.

> -Vineet
-- 
 Eugeniy Paltsev