linux-kernel - Re: [PATCH v2 2/5] usb: xhci: handle uPD720201 and uPD720202 w/o ROM

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Date:   Sun, 23 Jun 2019 22:05:33 +0530
From:   Vinod Koul <vkoul@...nel.org>
To:     Christian Lamparter <chunkeey@...il.com>
Cc:     Yoshihiro Shimoda <yoshihiro.shimoda.uh@...esas.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>,
        linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 2/5] usb: xhci: handle uPD720201 and uPD720202 w/o ROM

On 21-06-19, 21:53, Christian Lamparter wrote:
> On Friday, June 21, 2019 10:59:10 AM CEST Vinod Koul wrote:
> > From: Christian Lamparter <chunkeey@...glemail.com>
> > 
> > This patch adds a firmware check 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 a firmware in order to work as they do not have
> > support to load the firmware from an external ROM.
> > 
> > Currently, the xhci-pci driver is unable to initialize the hcd in
> > this case. Instead it will wait for 30 seconds and cause a timeout
> > in xhci_handshake() and fails.
> > 
> > [    5.116990] xhci_hcd 0000:45:00.0: new USB bus registered ...
> > [   32.335215] xhci_hcd 0000:45:00.0: can't setup: -110
> > [   32.340179] xhci_hcd 0000:45:00.0: USB bus 2 deregistered
> > [   32.345587] xhci_hcd 0000:45:00.0: init 0000:45:00.0 fail, -110
> > [   32.351496] xhci_hcd: probe of 0000:45:00.0 failed with error -110
> > 
> > Cc: Yoshihiro Shimoda <yoshihiro.shimoda.uh@...esas.com>
> > Signed-off-by: Christian Lamparter <chunkeey@...il.com>
> > Signed-off-by: Bjorn Andersson <bjorn.andersson@...aro.org>
> > Signed-off-by: Vinod Koul <vkoul@...nel.org>
> 
> >From what I remember, this was the "backup" patch that just prevented
> a stuck device (since the xhci-pci would trigger the watchdog on the
> powerpc APM82181). I posted because it because I didn't get any reply
> from Greg or Felipe. This patch should be skipable since patch 1/5 adds
> the full loader.

Okay let me drop this then!

-- 
~Vinod