Re: usb: dwc2: regression during boot on Raspberry Pi

Hi Stephen, Am 08.11.2015 um 06:06 schrieb Stephen Warren: On 11/07/2015 05:16 PM, Stefan Wahren wrote: Hi, [...] * phys (optional) * phy-names (optional) So here are my questions: How to fix the kernel oops in dwc2 driver? Do you know exactly what causes the crash; you've bisected to

Re: uac2 configfs function seems to load incorrectly if loaded other particular functions

Thought it might be useful to include the kernel versions: usb-host-arch$ uname -a Linux viii 4.2.3-1-ARCH #1 SMP PREEMPT Sat Oct 3 18:52:50 CEST 2015 x86_64 GNU/Linux usb-gadget-debian(beaglebone black)$ # uname -a Linux beaglebone 4.1.12-ti-r26 #1 SMP PREEMPT Fri Oct 30 21:28:17 UTC 2015 armv7l

Re: uac2 configfs function seems to load incorrectly if loaded other particular functions

It looks like the ordering may be important. Configuring uac2 as your first function seems to resolve the issue. Must be a requirement documented somewhere, or an interesting bug. :) -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majord...@vger.k

Re: uac2 configfs function seems to load incorrectly if loaded other particular functions

Chris McClimans writes: > It looks like the ordering may be important. > Configuring uac2 as your first function seems to resolve the issue. > Must be a requirement documented somewhere, or an interesting bug. :) It's a bug in uac2. It statically sets the IAD bFirstInterface to 0 regardless of

CP2110 - no serial device created

Hi, I have trouble with CP2110 chip (USB-to-serial converter) in kernel, no /dev/ttyUSBx device created after connection. I reported this bug https://bugzilla.kernel.org/show_bug.cgi?id=107501 Thanks Martin Kozelsky -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the b

Re: [PATCH v5 0/5] usb/gadget: independent registration of gadgets and gadget drivers

Hi Ruslan, On Mon, Nov 02, 2015 at 06:44:00PM +0200, Ruslan Bilovol wrote: > >> This patchset adds independent registration of gadgets > >> and gadget drivers to udc-core. This is very useful for > >> built-in modules into kernel case since it's possible > >> situation that gadget driver is probin

Re: [PATCH v5 1/5] gadget: Introduce the notifier functions

On 7 November 2015 at 00:56, Greg KH wrote: > On Fri, Nov 06, 2015 at 07:35:10PM +0800, Baolin Wang wrote: >> #ifdef CONFIG_HAS_DMA >> diff --git a/include/linux/usb/gadget.h b/include/linux/usb/gadget.h >> index c14a69b..755e8bc 100644 >> --- a/include/linux/usb/gadget.h >> +++ b/include/

Re: Overly conservative xHCI bandwidth estimation

On 11/07/2015 07:05 PM, Steinar H. Gunderson wrote: Can you cat /sys/bus/usb/devices/2-2/power/usb3_hardware_lpm_u1 >and /sys/bus/usb/devices/2-2/power/usb3_hardware_lpm_u2 for several >times? Don't use that device when cat these two files. I waited a bit longer, and indeed, now it consistentl

Re: Broken usb stick after plug it on an usb port?

Hello, On Fri, Nov 6, 2015 at 12:42 AM, Javi Barroso wrote: > Hello, > > El 6 de noviembre de 2015 0:28:40 CET, Greg KH escribió: >>On Thu, Nov 05, 2015 at 06:03:15PM +0100, Javier Barroso wrote: >>> Hello, >>> >>> I have a usb stick which was (apparently) broken after plug it on a >>> usb port

[PATCH v3 02/12] x86: fixmap: add permanent fixmap for xhci debug port

xHCI compatible USB3 host controller may provide debug capability which enables low-level system debug over USB. In order to probing this debug capability, Linux kernel needs to map and access the mmio of the host controller during early boot. This patch adds permenent fixmap pages in fixed_addres

[PATCH v3 00/12] usb: early: add support for early printk through USB3 debug port

This patch series adds support for early printk through USB3 debug port. USB3 debug port is described in xHCI specification as an optional extended capability. The first patch adds a file in sysfs, through which users can check whether the debug capability is supported by a specific host controlle

[PATCH v3 11/12] usb: serial: usb_debug: add support for dbc debug device

This patch add dbc debug device support in usb_debug driver. Signed-off-by: Lu Baolu Acked-by: Johan Hovold --- drivers/usb/serial/usb_debug.c | 28 +--- 1 file changed, 25 insertions(+), 3 deletions(-) diff --git a/drivers/usb/serial/usb_debug.c b/drivers/usb/serial/us

[PATCH v3 12/12] usb: doc: add document for xHCI DbC driver

Add Documentation/usb/xhci-dbc.txt. This document includes development status and user guide for USB3 debug port. Signed-off-by: Lu Baolu --- Documentation/usb/xhci-dbc.txt | 325 + MAINTAINERS| 1 + drivers/usb/early/xhci-dbc.c |

[PATCH v3 09/12] x86: early_printk: add USB3 debug port earlyprintk support

Add support for early printk by writing debug messages to the USB3 debug port. Users can use this type of early printk by specifying kernel parameter of "earlyprintk=xdbc". This gives users a chance of providing debug output. Signed-off-by: Lu Baolu --- Documentation/kernel-parameters.txt | 1 +

[PATCH v3 06/12] usb: xhci: dbc: add bulk out and bulk in interfaces

This patch adds interfaces for bulk out and bulk in ops. These interfaces could be used to implement early printk bootconsole or hook to various system debuggers. Signed-off-by: Lu Baolu --- drivers/usb/early/xhci-dbc.c | 373 +++ include/linux/usb/xhci-db

[PATCH v3 10/12] usb: xhci: dbc: add handshake between debug target and host

After DbC setup, debug target needs to wait until tty driver and application (e.g. mincom) on debug taget start. Otherwise, out messages might be ignored. This patch adds a ping/pong mechanism between debug target and host. Debug target will be waiting there until user presses 'Y' or 'y' in the t

[PATCH v3 08/12] usb: xhci: dbc: handle endpoint stall

In case of endpoint stall, software is able to detect the situation by reading DCCTRL.HIT or DCCTRL.HOT bits. DbC follows the normal USB framework to handle endpoint stall. When software detects endpoint stall situation, it should wait until endpoint is recovered before read or write oprations. Si

[PATCH v3 07/12] usb: xhci: dbc: handle dbc-configured exit

DbC might exit configured state in some cases (refer to 7.6.4.4 in xHCI spec 1.1). Software needs detect and clear this situation by clearing DCCTRL.DCR and wait until the DbC configured before read or write oprations. Signed-off-by: Lu Baolu --- drivers/usb/early/xhci-dbc.c | 28 +++

[PATCH v3 03/12] usb: xhci: dbc: probe and setup xhci debug capability

xHCI debug capability (DbC) is an optional functionality provided by an xHCI host controller. Software learns this capability by walking through the extended capability list in mmio of the host. This patch introduces the code to probe and initialize the debug capability hardware during early boot.

[PATCH v3 04/12] usb: xhci: dbc: add support for Intel xHCI dbc quirk

On Intel platform, if the debug target is connected with debug host, enabling DCE bit in command register leads to a hung bus state. In the hung state, the host system will not see a port connected status bit set. Hence debug target fails to be probed. The state could be resolved by performing a p

[PATCH v3 05/12] usb: xhci: dbc: add debug buffer

"printk" is not suitable for dbc debugging especially when console is in usage. This patch adds a debug buffer in dbc driver and puts the debug messages in this local buffer. The debug buffer could be dumped whenever the console is not in use. This part of code will not be visible unless DBC_DEBUG

[PATCH v3 01/12] usb: xhci: add sysfs file for xHCI debug port

This patch adds a sysfs file for users to check 1) whether the debug capability is implemented by hardware; 2) if supported, which state does it stay at. With a host that supports debug port, a file named "debug_port_state" will be created under the device sysfs directory. Reading this file will s