linux-kernel - Re: [PATCH v13 2/5] usb: renesas-xhci: Add the renesas xhci driver

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Date:   Tue, 19 May 2020 15:51:24 +0300
From:   Heikki Krogerus <heikki.krogerus@...ux.intel.com>
To:     Vinod Koul <vkoul@...nel.org>
Cc:     Christian Lamparter <chunkeey@...glemail.com>,
        Mathias Nyman <mathias.nyman@...el.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux-arm-msm@...r.kernel.org,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Yoshihiro Shimoda <yoshihiro.shimoda.uh@...esas.com>,
        John Stultz <john.stultz@...aro.org>,
        Alan Stern <stern@...land.harvard.edu>,
        Andreas Böhler <dev@...ehler.at>,
        linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v13 2/5] usb: renesas-xhci: Add the renesas xhci driver

On Tue, May 19, 2020 at 05:31:30PM +0530, Vinod Koul wrote:
> Hi Heikki
> 
> On 19-05-20, 14:45, Heikki Krogerus wrote:
> > Hi guys,
> > 
> > On Wed, May 06, 2020 at 11:30:22AM +0530, Vinod Koul wrote:
> > > From: Christian Lamparter <chunkeey@...glemail.com>
> > > 
> > > This add a new driver for renesas xhci which is basically a firmware
> > > loader for uPD720201 and uPD720202 w/o ROM. The xhci-pci driver will
> > > invoke this driver for loading/unloading on relevant devices.
> > > 
> > > This patch adds a firmware loader for the uPD720201K8-711-BAC-A
> > > and uPD720202K8-711-BAA-A variant. Both of these chips are listed
> > > in Renesas' R19UH0078EJ0500 Rev.5.00 "User's Manual: Hardware" as
> > > devices which need the firmware loader on page 2 in order to
> > > work as they "do not support the External ROM".
> > > 
> > > The "Firmware Download Sequence" is describe in chapter
> > > "7.1 FW Download Interface" R19UH0078EJ0500 Rev.5.00 page 131.
> > > 
> > > The firmware "K2013080.mem" is available from a USB3.0 Host to
> > > PCIe Adapter (PP2U-E card) "Firmware download" archive. An
> > > alternative version can be sourced from Netgear's WNDR4700 GPL
> > > archives.
> > > 
> > > The release notes of the PP2U-E's "Firmware Download" ver 2.0.1.3
> > > (2012-06-15) state that the firmware is for the following devices:
> > >  - uPD720201 ES 2.0 sample whose revision ID is 2.
> > >  - uPD720201 ES 2.1 sample & CS sample & Mass product, ID is 3.
> > >  - uPD720202 ES 2.0 sample & CS sample & Mass product, ID is 2.
> > 
> > You wouldn't happen to have access to the documentation of the
> > "original" uPD720200 USB 3.0 controller?
> > 
> > It would be cool if we could support that too with this driver.
> 
> Not me. does it also require firmware? If so you can try with this
> driver and see if it works for you?

It does require firmware, and yes I can test this driver at some
point.

thanks,

-- 
heikki