linux-kernel - Re: [v4,3/4] reset-controller: ti: introduce a new reset handler

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Message-ID: <1601387640.14806.37.camel@mhfsdcap03>
Date:   Tue, 29 Sep 2020 21:54:00 +0800
From:   Crystal Guo <crystal.guo@...iatek.com>
To:     "robh+dt@...nel.org" <robh+dt@...nel.org>,
        Suman Anna <s-anna@...com>,
        Philipp Zabel <p.zabel@...gutronix.de>,
        "matthias.bgg@...il.com" <matthias.bgg@...il.com>
CC:     srv_heupstream <srv_heupstream@...iatek.com>,
        "linux-mediatek@...ts.infradead.org" 
        <linux-mediatek@...ts.infradead.org>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
        Seiya Wang (王迺君) 
        <seiya.wang@...iatek.com>,
        Stanley Chu (朱原陞) 
        <stanley.chu@...iatek.com>,
        Yingjoe Chen (陳英洲) 
        <Yingjoe.Chen@...iatek.com>,
        Fan Chen (陳凡) 
        <fan.chen@...iatek.com>,
        "Yong Liang (梁勇)" 
        <Yong.Liang@...iatek.com>
Subject: Re: [v4,3/4] reset-controller: ti: introduce a new reset handler

On Mon, 2020-09-14 at 22:00 +0800, Crystal Guo wrote:
> On Fri, 2020-09-11 at 22:44 +0800, Suman Anna wrote:
> > On 9/11/20 9:26 AM, Philipp Zabel wrote:
> > > Hi Crystal,
> > > 
> > > On Fri, 2020-09-11 at 14:07 +0800, Crystal Guo wrote:
> > > [...]
> > >> Should I add the SoC-specific data as follows?
> > >> This may also modify the ti original code, is it OK?
> > >>
> > >> +       data->reset_data = of_device_get_match_data(&pdev->dev);
> > >> +
> > >> +       list = of_get_property(np, data->reset_data->reset_bits, &size);
> > >>
> > >> +static const struct common_reset_data ti_reset_data = {
> > >> +       .reset_op_available = false,
> > >> +       .reset_bits = "ti, reset-bits",
> > >                             ^
> > > That space doesn't belong there.
> > > 
> > >> +};
> > >> +
> > >> +static const struct common_reset_data mediatek_reset_data = {
> > >> +       .reset_op_available = true,
> > >> +       .reset_bits = "mediatek, reset-bits",
> > >> +};
> > > 
> > > I understand Robs comments as meaning "ti,reset-bits" should have been
> > > called "reset-bits" in the first place, and you shouldn't repeat adding
> > > the vendor prefix, as that is implied by the compatible. So this should
> > > probably be just "reset-bits".
> > 
> > Hmm, not sure about that. I think Rob wants the reset data itself to be added in
> > the driver as is being done on some other SoCs (eg: like in reset-qcom-pdc.c).
> > 
> > regards
> > Suman
> > 
> Hi Rob,
> 
> Can you help to comment about this point?
> Modify "ti,reset-bits" to "reset-bits" or add "mediatek,reset-bits" ?
> 
> Many thanks~
> Crystal
> 
> > > 
> > > Otherwise this looks like it should work.
> > > 
> > > regards
> > > Philipp
> > > 
> > 

Dears,

I have uploaded the changes at
https://patchwork.kernel.org/cover/11805937/
Please help me to review, many thanks~~

regards
Crystal
>