linux-kernel - Re: [PATCH 2/5] arm64: dts: HiSilicon: Add support for HiKey 970 PCIe controller hardware

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Message-ID: <20211207093926.24f26dae@coco.lan>
Date:   Tue, 7 Dec 2021 09:39:26 +0100
From:   Mauro Carvalho Chehab <mchehab+huawei@...nel.org>
To:     Wei Xu <xuwei5@...ilicon.com>
Cc:     Rob Herring <robh+dt@...nel.org>, <linuxarm@...wei.com>,
        <mauro.chehab@...wei.com>,
        Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>,
        <devicetree@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 2/5] arm64: dts: HiSilicon: Add support for HiKey 970
 PCIe controller hardware

Em Tue, 7 Dec 2021 16:09:16 +0800
Wei Xu <xuwei5@...ilicon.com> escreveu:

> Hi Mauro,
> 
> On 2021/11/16 19:59, Mauro Carvalho Chehab wrote:
> > From: Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
> > 
> > Add DTS bindings for the HiKey 970 board's PCIe hardware.
> > 
> > Co-developed-by: Mauro Carvalho Chehab <mchehab+huawei@...nel.org>
> > Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
> > Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@...nel.org>
> > ---
> > 
> > To mailbombing on a large number of people, only mailing lists were C/C on the cover.
> > See [PATCH 0/5] at: https://lore.kernel.org/all/cover.1637063775.git.mchehab+huawei@kernel.org/
> > 
> >  arch/arm64/boot/dts/hisilicon/hi3670.dtsi | 107 ++++++++++++++++++++++
> >  1 file changed, 107 insertions(+)
> > 
> > diff --git a/arch/arm64/boot/dts/hisilicon/hi3670.dtsi b/arch/arm64/boot/dts/hisilicon/hi3670.dtsi
> > index 636c8817df7e..225dccbcb064 100644
> > --- a/arch/arm64/boot/dts/hisilicon/hi3670.dtsi
> > +++ b/arch/arm64/boot/dts/hisilicon/hi3670.dtsi
> > @@ -176,6 +176,12 @@ sctrl: sctrl@...0a000 {
> >  			#clock-cells = <1>;
> >  		};
> >  
> > +		pmctrl: pmctrl@...31000 {
> > +			compatible = "hisilicon,hi3670-pmctrl", "syscon";  
> 
> The "hi3670-pmctrl" is not documented in the devicetree binding documents yet.
> Could we remove this part this time?

Without that, the PCI PHY won't work.

IMO, the best would be to just add this compatible to hi3670-clock,
where it belongs.

Just sent a patch.

Regards,
Mauro