linux-kernel - Re: [PATCH v3 2/6] dt-bindings: pci: add the samsung,exynos-pcie binding

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Message-ID: <CAL_JsqKQstKa7_0pjcODyyLCwMiGF9zB4_+x=GhcSUOyvuLRmw@mail.gmail.com>
Date:   Thu, 5 Nov 2020 09:27:34 -0600
From:   Rob Herring <robh@...nel.org>
To:     Marek Szyprowski <m.szyprowski@...sung.com>
Cc:     linux-samsung-soc <linux-samsung-soc@...r.kernel.org>,
        PCI <linux-pci@...r.kernel.org>, devicetree@...r.kernel.org,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Jaehoon Chung <jh80.chung@...sung.com>,
        Jingoo Han <jingoohan1@...il.com>,
        Krzysztof Kozlowski <krzk@...nel.org>,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        Lorenzo Pieralisi <lorenzo.pieralisi@....com>,
        Vinod Koul <vkoul@...nel.org>,
        Kishon Vijay Abraham I <kishon@...com>
Subject: Re: [PATCH v3 2/6] dt-bindings: pci: add the samsung,exynos-pcie binding

On Thu, Nov 5, 2020 at 2:33 AM Marek Szyprowski
<m.szyprowski@...sung.com> wrote:
>
> Hi Rob,
>
> On 04.11.2020 22:35, Rob Herring wrote:
> > On Thu, Oct 29, 2020 at 02:40:13PM +0100, Marek Szyprowski wrote:
> >> Add dt-bindings for the Samsung Exynos PCIe controller (Exynos5433
> >> variant). Based on the text dt-binding posted by Jaehoon Chung.
> >>
> >> Signed-off-by: Marek Szyprowski <m.szyprowski@...sung.com>
> >> Reviewed-by: Krzysztof Kozlowski <krzk@...nel.org>
> >> ---
> >>   .../bindings/pci/samsung,exynos-pcie.yaml     | 119 ++++++++++++++++++
> >>   1 file changed, 119 insertions(+)
> >>   create mode 100644 Documentation/devicetree/bindings/pci/samsung,exynos-pcie.yaml
>
> >> ...
>
> >> +  num-viewport:
> >> +    const: 3
> > I'm confused why you need this. This is only used with the iATU except
> > for keystone. Platforms like Exynos with their own child bus config
> > space accessors don't have an iATU.
>
> Frankly I have no idea, I don't know much about the PCI internals.

Sorry, I was confused. It's fine.

Reviewed-by: Rob Herring <robh@...nel.org>

Rob