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Date:   Wed, 25 Nov 2020 06:53:06 +0000
From:   Peter Chen <peter.chen@....com>
To:     Pawel Laszczak <pawell@...ence.com>
CC:     "gregkh@...uxfoundation.org" <gregkh@...uxfoundation.org>,
        "linux-usb@...r.kernel.org" <linux-usb@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "balbi@...nel.org" <balbi@...nel.org>,
        "colin.king@...onical.com" <colin.king@...onical.com>,
        "rogerq@...com" <rogerq@...com>, Rahul Kumar <kurahul@...ence.com>,
        "nsekhar@...com" <nsekhar@...com>
Subject: RE: [PATCH v3 00/10] Introduced new Cadence USBSSP DRD Driver.


> >>>
> >>> The device side of USBSS DRD controller is compliant with XHCI.
> >>> The architecture for device side is almost the same as for host
> >>> side, and most of the XHCI specification can be used to understand
> >>> how this controller operates.
> >>>
> >>> This controller and driver support Full Speed, Hight Speed, Supper
> >>> Speed and Supper Speed Plus USB protocol.
> >>>
> >>> The prefix cdnsp used in driver has chosen by analogy to cdn3 driver.
> >>> The last letter of this acronym means PLUS. The formal name of
> >>> controller is USBSSP but it's to generic so I've decided to use CDNSP.
> >>>
> >>> The patch 1: adds support for DRD CDNSP.
> >>> The patch 2: separates common code that can be reusable by cdnsp driver.
> >>> The patch 3: moves reusable code to separate module.
> >>> The patch 4: changes prefixes in reusable code from cdns3 to common
> cdns.
> >>> The patch 5: adopts gadget_dev pointer in cdns structure to make possible
> >>>              use it in both drivers.
> >>> The patches 6-8: add the main part of driver and has been intentionally
> >>>              split into 3 part. In my opinion such division should not
> >>>              affect understanding and reviewing the driver, and cause
> that
> >>>              main patch (7/8) is little smaller. Patch 6 introduces main
> >>>              header file for driver, 7 is the main part that implements
> all
> >>>              functionality of driver and 8 introduces tracepoints.
> >>> The patch 9: Adds cdns3 prefixes to files related with USBSS driver.
> >>> the patch 10: Adds USBSSP DRD IP driver entry to MAINTAINERS file.
> >>>
> >>> Changlog from v2:
> >>> - removed not used pdev parameter from cdnsp_read/wite_64 functions
> >>> - fixed incorrect value assigned to CDNSP_ENDPOINTS_NUM (32 -> 31)
> >>> - replaced some constant value with CDNSP_ENDPOINTS_NUM macro
> >>> - replaced 'true' with '1' in bits description in cdnsp-gadget.h
> >>> file
> >>> - fixed some typos
> >>> - some other less important changes suggested by Peter Chen
> >>
> >>Hi Pawel,
> >>
> >>I have updated my -next tree as the latest usb-next tree which
> >>v5.10-rc4 is included, would you please rebase my tree and send again,
> >>I could apply your patches and test, if test could pass, I will apply it to my
> -next tree.
> >>You don't need to rebase again since it is a huge patch set, will take
> >>some efforts for rebase.
> >>
> >
> >I'll try to post it tomorrow.
> 
> Can I send the new version CDNSP or I should wait for completion
> 'Re: [PATCH] Revert "usb: cdns3: core: quit if it uses role switch class"' and
> applying the appropriate fix to your repo ?
> 
 
Please wait that fix, thanks.

Peter

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