linux-kernel - Re: USB broken on Banana Pi in Linux 4.6

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Date:	Mon, 30 May 2016 13:47:12 -0700
From:	Greg KH <gregkh@...uxfoundation.org>
To:	Marc Haber <mh+linux-kernel@...schlus.de>
Cc:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	linux-usb@...r.kernel.org
Subject: Re: USB broken on Banana Pi in Linux 4.6

On Mon, May 30, 2016 at 09:02:54PM +0200, Marc Haber wrote:
> Hi,
> 
> on my Bananapis, in kernel 4.6 USB does not work. Kernel configuration
> is USB-wise identical to 4.5 (grepped for differences in (hci|usb)),
> and in 4.6 there is not even /dev/bus/usb.

Hint, include linux-usb@...r in usb-specific questions...

> 
> Here is the log excerpt from a 4.5 kernel coming up:
> 
> May 15 09:30:14 cadencia kernel: [    5.307730] ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
> May 15 09:30:14 cadencia kernel: [    5.312891] ehci-platform: EHCI generic platform driver
> May 15 09:30:14 cadencia kernel: [    5.315579] sun4i-ss 1c15000.crypto-engine: no reset control found
> May 15 09:30:14 cadencia kernel: [    5.317303] sun4i-ss 1c15000.crypto-engine: Die ID 0
> May 15 09:30:14 cadencia kernel: [    5.322742] ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver
> May 15 09:30:14 cadencia kernel: [    5.332052] ohci-platform: OHCI generic platform driver
> May 15 09:30:14 cadencia kernel: [    5.360131] axp20x 0-0034: AXP20x variant AXP209 found
> May 15 09:30:14 cadencia kernel: [    5.405989] axp20x 0-0034: AXP20X driver loaded
> May 15 09:30:14 cadencia kernel: [    5.409201] ehci-platform 1c14000.usb: EHCI Host Controller
> May 15 09:30:14 cadencia kernel: [    5.409271] ehci-platform 1c14000.usb: new USB bus registered, assigned bus number 1
> May 15 09:30:14 cadencia kernel: [    5.409506] ehci-platform 1c14000.usb: irq 29, io mem 0x01c14000
> May 15 09:30:14 cadencia kernel: [    5.410553] sunxi-wdt 1c20c90.watchdog: Watchdog enabled (timeout=16 sec, nowayout=0)
> May 15 09:30:14 cadencia kernel: [    5.420414] ehci-platform 1c14000.usb: USB 2.0 started, EHCI 1.00
> May 15 09:30:14 cadencia kernel: [    5.420977] usb usb1: New USB device found, idVendor=1d6b, idProduct=0002
> May 15 09:30:14 cadencia kernel: [    5.420998] usb usb1: New USB device strings: Mfr=3, Product=2, SerialNumber=1
> May 15 09:30:14 cadencia kernel: [    5.421010] usb usb1: Product: EHCI Host Controller
> May 15 09:30:14 cadencia kernel: [    5.421021] usb usb1: Manufacturer: Linux 4.5.4-zgbpi-armmp-lpae ehci_hcd
> May 15 09:30:14 cadencia kernel: [    5.421033] usb usb1: SerialNumber: 1c14000.usb
> May 15 09:30:14 cadencia kernel: [    5.422317] hub 1-0:1.0: USB hub found
> May 15 09:30:14 cadencia kernel: [    5.422431] hub 1-0:1.0: 1 port detected
> May 15 09:30:14 cadencia kernel: [    5.423753] ehci-platform 1c1c000.usb: EHCI Host Controller
> May 15 09:30:14 cadencia kernel: [    5.423814] ehci-platform 1c1c000.usb: new USB bus registered, assigned bus number 2
> May 15 09:30:14 cadencia kernel: [    5.424055] ehci-platform 1c1c000.usb: irq 33, io mem 0x01c1c000
> May 15 09:30:14 cadencia kernel: [    5.432424] ehci-platform 1c1c000.usb: USB 2.0 started, EHCI 1.00
> May 15 09:30:14 cadencia kernel: [    5.433089] usb usb2: New USB device found, idVendor=1d6b, idProduct=0002
> May 15 09:30:14 cadencia kernel: [    5.433110] usb usb2: New USB device strings: Mfr=3, Product=2, SerialNumber=1
> May 15 09:30:14 cadencia kernel: [    5.433122] usb usb2: Product: EHCI Host Controller
> May 15 09:30:14 cadencia kernel: [    5.433133] usb usb2: Manufacturer: Linux 4.5.4-zgbpi-armmp-lpae ehci_hcd
> May 15 09:30:14 cadencia kernel: [    5.433144] usb usb2: SerialNumber: 1c1c000.usb
> May 15 09:30:14 cadencia kernel: [    5.434472] hub 2-0:1.0: USB hub found
> May 15 09:30:14 cadencia kernel: [    5.434595] hub 2-0:1.0: 1 port detected
> May 15 09:30:14 cadencia kernel: [    5.436189] ohci-platform 1c14400.usb: Generic Platform OHCI controller
> May 15 09:30:14 cadencia kernel: [    5.436528] ohci-platform 1c14400.usb: new USB bus registered, assigned bus number 3
> May 15 09:30:14 cadencia kernel: [    5.436779] ohci-platform 1c14400.usb: irq 30, io mem 0x01c14400
> May 15 09:30:14 cadencia kernel: [    5.497002] usb usb3: New USB device found, idVendor=1d6b, idProduct=0001
> May 15 09:30:14 cadencia kernel: [    5.497032] usb usb3: New USB device strings: Mfr=3, Product=2, SerialNumber=1
> May 15 09:30:14 cadencia kernel: [    5.497045] usb usb3: Product: Generic Platform OHCI controller
> May 15 09:30:14 cadencia kernel: [    5.497056] usb usb3: Manufacturer: Linux 4.5.4-zgbpi-armmp-lpae ohci_hcd
> May 15 09:30:14 cadencia kernel: [    5.497068] usb usb3: SerialNumber: 1c14400.usb
> 
> In kernel 4.6, the message "ohci-platform: OHCI generic platform
> driver" is the last one, and "ehci-platform 1c14000.usb: EHCI Host
> Controller" is the first one that is missing.
> 
> Is this already a known issue? Or, does a 4.6 kernel need to be
> configured differently if you want USB?

Are you sure you configured in the correct host controller that you
want?  Have you done a diff of your .config files to see what you
changed?  How did you create your 4.6 config?

thanks,

greg k-h