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

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Date:   Mon, 14 Sep 2020 22:00:19 +0800
From:   Crystal Guo <crystal.guo@...iatek.com>
To:     "robh+dt@...nel.org" <robh+dt@...nel.org>
CC:     Suman Anna <s-anna@...com>, Philipp Zabel <p.zabel@...gutronix.de>,
        "matthias.bgg@...il.com" <matthias.bgg@...il.com>,
        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 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
> > 
>