linux-kernel - Re: [PATCH v3 3/9] dt-bindings: PCI: renesas,pci-rcar-gen2: 'depends-on' is no more optional

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Date:   Tue, 13 Dec 2022 14:22:58 +0100
From:   Herve Codina <herve.codina@...tlin.com>
To:     Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Cc:     Geert Uytterhoeven <geert+renesas@...der.be>,
        Michael Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Magnus Damm <magnus.damm@...il.com>,
        Gareth Williams <gareth.williams.jx@...esas.com>,
        linux-renesas-soc@...r.kernel.org, linux-clk@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-usb@...r.kernel.org,
        Thomas Petazzoni <thomas.petazzoni@...tlin.com>,
        Miquel Raynal <miquel.raynal@...tlin.com>
Subject: Re: [PATCH v3 3/9] dt-bindings: PCI: renesas,pci-rcar-gen2:
 'depends-on' is no more optional

Hi Krzysztof,

On Fri, 9 Dec 2022 09:06:55 +0100
Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org> wrote:

> On 08/12/2022 16:51, Herve Codina wrote:
> > Hi Krzysztof,
> > 
> > On Thu, 8 Dec 2022 10:46:32 +0100
> > Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org> wrote:
> >   
> >> On 08/12/2022 10:05, Herve Codina wrote:  
> >>> Hi Krzysztof,
> >>>
> >>> On Thu, 8 Dec 2022 09:26:41 +0100
> >>> Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org> wrote:
> >>>     
> >>>> On 07/12/2022 17:24, Herve Codina wrote:    
> >>>>> The 'depends-on' property is set in involved DTS.
> >>>>>
> >>>>> Move it to a required property.
> >>>>>
> >>>>> Signed-off-by: Herve Codina <herve.codina@...tlin.com>
> >>>>> ---
> >>>>>  Documentation/devicetree/bindings/pci/renesas,pci-rcar-gen2.yaml | 1 +      
> >>>>
> >>>> This should be squashed with previous patch. There is no point to add
> >>>> property and immediately in the next patch make it required. Remember
> >>>> that bindings are separate from DTS.
> >>>>
> >>>> Best regards,
> >>>> Krzysztof
> >>>>    
> >>>
> >>> I though about make dtbs_check in case of git bisect.    
> >>
> >> And what would this commit change? In Git you will have
> >> 1. dt-bindings: PCI: renesas,pci-rcar-gen2: Add depends-on for RZ/N1 SoC
> >> family
> >> 2. dt-bindings: PCI: renesas,pci-rcar-gen2: 'depends-on' is no more optional
> >>
> >> so what is the difference for git bisect?  
> > 
> > Well, today, I have:
> > 1. dt-bindings: Add depends-on
> > 2. dts: Add depends-on
> > 3. dt-bindings: Move depends-on to mandatory  
> 
> What does it mean "I have"? Patches on mailing list? But we talk about
> Git and I wrote you bindings are DTS are not going the same tree.
> 
> > 
> > If I squash dt-bindings commits, I am going to have:
> >   1. dt-bindings: Add mandatory depends-on
> >   2. dts: Add depends-on
> > or
> >   1. dts: Add depends-on
> >   2. dt-bindings: Add mandatory depends-on  
> 
> And how does it matter? Anyway it goes separate trees.

I finally understand what you mean by separate trees.
And indeed, you're right, my patches split does not make
any sense.

According to feedbacks on this v3 series, these 3 patches
will be removed in v4.

Thanks for the review,
Hervé

-- 
Hervé Codina, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com