linux-kernel - Re: [PATCH v5 10/19] dt-bindings: usb: Convert DWC USB3 bindings to DT schema

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Date:   Tue, 8 Dec 2020 09:21:23 -0600
From:   Rob Herring <robh@...nel.org>
To:     Serge Semin <Sergey.Semin@...kalelectronics.ru>
Cc:     Ahmad Zainie <wan.ahmad.zainie.wan.mohamad@...el.com>,
        Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>,
        devicetree@...r.kernel.org,
        Yoshihiro Shimoda <yoshihiro.shimoda.uh@...esas.com>,
        Chunfeng Yun <chunfeng.yun@...iatek.com>,
        Manu Gautam <mgautam@...eaurora.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux-kernel@...r.kernel.org,
        Alexey Malahov <Alexey.Malahov@...kalelectronics.ru>,
        Neil Armstrong <narmstrong@...libre.com>,
        Pavel Parkhomenko <Pavel.Parkhomenko@...kalelectronics.ru>,
        linux-arm-kernel@...ts.infradead.org,
        Kevin Hilman <khilman@...libre.com>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        linux-snps-arc@...ts.infradead.org,
        Serge Semin <fancer.lancer@...il.com>,
        linux-usb@...r.kernel.org, Rob Herring <robh+dt@...nel.org>,
        linuxppc-dev@...ts.ozlabs.org, Felipe Balbi <balbi@...nel.org>,
        Martin Blumenstingl <martin.blumenstingl@...glemail.com>,
        Andy Gross <agross@...nel.org>,
        Krzysztof Kozlowski <krzk@...nel.org>,
        Mathias Nyman <mathias.nyman@...el.com>,
        Roger Quadros <rogerq@...com>, linux-mips@...r.kernel.org
Subject: Re: [PATCH v5 10/19] dt-bindings: usb: Convert DWC USB3 bindings to
 DT schema

On Sat, 05 Dec 2020 18:24:17 +0300, Serge Semin wrote:
> DWC USB3 DT node is supposed to be compliant with the Generic xHCI
> Controller schema, but with additional vendor-specific properties, the
> controller-specific reference clocks and PHYs. So let's convert the
> currently available legacy text-based DWC USB3 bindings to the DT schema
> and make sure the DWC USB3 nodes are also validated against the
> usb-xhci.yaml schema.
> 
> Note 1. we have to discard the nodename restriction of being prefixed with
> "dwc3@" string, since in accordance with the usb-hcd.yaml schema USB nodes
> are supposed to be named as "^usb(@.*)".
> 
> Note 2. The clock-related properties are marked as optional to match the
> DWC USB3 driver expectation and to improve the bindings mainainability
> so in case if there is a glue-node it would the responsible for the
> clocks initialization.
> 
> Signed-off-by: Serge Semin <Sergey.Semin@...kalelectronics.ru>
> 
> ---
> 
> Changelog v2:
> - Discard '|' from the descriptions, since we don't need to preserve
>   the text formatting in any of them.
> - Drop quotes from around the string constants.
> - Fix the "clock-names" prop description to be referring the enumerated
>   clock-names instead of the ones from the Databook.
> 
> Changelog v3:
> - Apply usb-xhci.yaml# schema only if the controller is supposed to work
>   as either host or otg.
> 
> Changelog v4:
> - Apply usb-drd.yaml schema first. If the controller is configured
>   to work in a gadget mode only, then apply the usb.yaml schema too,
>   otherwise apply the usb-xhci.yaml schema.
> - Discard the Rob'es Reviewed-by tag. Please review the patch one more
>   time.
> 
> Changelog v5:
> - Add "snps,dis-split-quirk" property to the DWC USB3 DT schema.
> - Add a commit log text about the clock-related property changes.
> - Make sure dr_mode exist to apply the USB-gadget-only schema.
> ---
>  .../devicetree/bindings/usb/dwc3.txt          | 128 -------
>  .../devicetree/bindings/usb/snps,dwc3.yaml    | 312 ++++++++++++++++++
>  2 files changed, 312 insertions(+), 128 deletions(-)
>  delete mode 100644 Documentation/devicetree/bindings/usb/dwc3.txt
>  create mode 100644 Documentation/devicetree/bindings/usb/snps,dwc3.yaml
> 

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