linux-kernel - Re: [PATCH 11/20] dt-bindings: usb: dwc3: Add synopsys,dwc3 compatible string

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Date:   Thu, 15 Oct 2020 00:35:54 +0300
From:   Serge Semin <Sergey.Semin@...kalelectronics.ru>
To:     Krzysztof Kozlowski <krzk@...nel.org>,
        Rob Herring <robh+dt@...nel.org>
CC:     Serge Semin <fancer.lancer@...il.com>,
        Mathias Nyman <mathias.nyman@...el.com>,
        Felipe Balbi <balbi@...nel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Alexey Malahov <Alexey.Malahov@...kalelectronics.ru>,
        Pavel Parkhomenko <Pavel.Parkhomenko@...kalelectronics.ru>,
        Andy Gross <agross@...nel.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Manu Gautam <mgautam@...eaurora.org>,
        Roger Quadros <rogerq@...com>,
        Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>,
        Yoshihiro Shimoda <yoshihiro.shimoda.uh@...esas.com>,
        Neil Armstrong <narmstrong@...libre.com>,
        Kevin Hilman <khilman@...libre.com>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-snps-arc@...ts.infradead.org>, <linux-mips@...r.kernel.org>,
        <linuxppc-dev@...ts.ozlabs.org>, <linux-usb@...r.kernel.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 11/20] dt-bindings: usb: dwc3: Add synopsys,dwc3
 compatible string

On Wed, Oct 14, 2020 at 10:18:18PM +0200, Krzysztof Kozlowski wrote:
> On Wed, Oct 14, 2020 at 01:13:53PM +0300, Serge Semin wrote:
> > The DWC USB3 driver and some DTS files like Exynos 5250, Keystone k2e, etc
> > expects the DWC USB3 DT node to have the compatible string with the
> > "synopsys" vendor prefix. Let's add the corresponding compatible string to
> > the controller DT schema, but mark it as deprecated seeing the Synopsys,
> > Inc. is presented with just "snps" vendor prefix.
> 

> Instead of adding deprecated schema just correct the DTSes to use snps.
> The "synopsys" is not even in vendor prefixes.

Yeah, it's not, but the driver and some dts'es use it this way. I am not sure
that the solution suggested by you is much better than mine. So let's hear the
Rob'es opinion out in this matter. @Rob, what do you think?

-Sergey

> 
> Best regards,
> Krzysztof