linux-kernel - Aw: Re: [RFC/RFT 4/6] PCI: rockchip-dwc: add pcie bifurcation

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Message-ID: <trinity-a220fd81-2ee9-474d-bd65-505b9ed904b2-1650186482865@3c-app-gmx-bs58>
Date:   Sun, 17 Apr 2022 11:08:02 +0200
From:   Frank Wunderlich <frank-w@...lic-files.de>
To:     Bjorn Helgaas <helgaas@...nel.org>
Cc:     Frank Wunderlich <linux@...web.de>,
        Rob Herring <robh+dt@...nel.org>,
        linux-rockchip@...ts.infradead.org,
        Kishon Vijay Abraham I <kishon@...com>,
        Vinod Koul <vkoul@...nel.org>,
        Krzysztof Kozlowski <krzk+dt@...nel.org>,
        Heiko Stuebner <heiko@...ech.de>,
        Lorenzo Pieralisi <lorenzo.pieralisi@....com>,
        Krzysztof Wilczyński <kw@...ux.com>,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        Philipp Zabel <p.zabel@...gutronix.de>,
        Johan Jonker <jbx6244@...il.com>,
        Peter Geis <pgwipeout@...il.com>,
        Michael Riesch <michael.riesch@...fvision.net>,
        linux-phy@...ts.infradead.org, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-pci@...r.kernel.org
Subject: Aw: Re: [RFC/RFT 4/6] PCI: rockchip-dwc: add pcie bifurcation

Hi,

> Gesendet: Sonntag, 17. April 2022 um 01:30 Uhr
> Von: "Bjorn Helgaas" <helgaas@...nel.org>

thanks for first review

> On Sat, Apr 16, 2022 at 03:54:56PM +0200, Frank Wunderlich wrote:
> > From: Frank Wunderlich <frank-w@...lic-files.de>
> >
> > PCIe Lanes can be split to 2 slots with bifurcation.
> > Add support for this in existing pcie driver.
>
> Please s/pcie/PCIe/ in subject and above to be consistent.  You also
> have kind of a random usage in other patches.

will do

> Mention the DT property used for this in the commit log.

good point

noticed that i forgot to add it to pcie-bindings  (rockchip-dw-pcie.yaml).

> Is the "rockchip,bifurcation" DT property something that should be
> generalized so it's not rockchip-specific?  Other controllers are
> likely to support similar functionality.

I do not know if other controllers support similar functionality, but i ack a property without vendor prefix is better. Should i use "bifurcation" as name or do you think about a different name which is more generic?

regards Frank