linux-kernel - RE: [PATCH v8 1/5] usb: xhci: Change the XHCI link order in the Makefile

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Date:   Mon, 11 May 2020 11:08:55 +0000
From:   Yoshihiro Shimoda <yoshihiro.shimoda.uh@...esas.com>
To:     Al Cooper <alcooperx@...il.com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
CC:     Alan Stern <stern@...land.harvard.edu>,
        Andy Shevchenko <andy.shevchenko@...il.com>,
        "bcm-kernel-feedback-list@...adcom.com" 
        <bcm-kernel-feedback-list@...adcom.com>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Krzysztof Kozlowski <krzk@...nel.org>,
        "linux-usb@...r.kernel.org" <linux-usb@...r.kernel.org>,
        Mathias Nyman <mathias.nyman@...el.com>,
        Rob Herring <robh+dt@...nel.org>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Subject: RE: [PATCH v8 1/5] usb: xhci: Change the XHCI link order in the
 Makefile

Hi Al,

> From: Al Cooper, Sent: Saturday, May 9, 2020 6:19 AM
> 
> Some BRCMSTB USB chips have an XHCI, EHCI and OHCI controller
> on the same port where XHCI handles 3.0 devices, EHCI handles 2.0
> devices and OHCI handles <2.0 devices. Currently the Makefile
> has XHCI linking at the bottom which will result in the XHIC driver
> initalizing after the EHCI and OHCI drivers and any installed 3.0
> device will be seen as a 2.0 device. Moving the XHCI linking
> above the EHCI and OHCI linking fixes the issue.
> 
> Signed-off-by: Al Cooper <alcooperx@...il.com>

I tested on my environment (r8a77951 and r8a77961) and then
I didn't detect any regression. So,

Tested-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@...esas.com>

Best regards,
Yoshihiro Shimoda