On Mon, Feb 13, 2017 at 3:17 PM, Belisko Marek <marek.beli...@gmail.com> wrote:
> Hi Yegor,
>
> On Mon, Feb 13, 2017 at 12:57 PM, Yegor Yefremov
> <yegorsli...@googlemail.com> wrote:
>>
>> My am335x based board doesn't detect USB sticks:
>>
>> U-Boot 2017.03-rc1 (Feb 13 2017 - 12:46:54 +0100)
>>
>> CPU : AM335X-GP rev 2.1
>> I2C: ready
>> DRAM: 256 MiB
>> NAND: 256 MiB
>> MMC: OMAP SD/MMC: 0, OMAP SD/MMC: 1
>> Using default environment
>>
>> Net: <ethaddr> not set. Validating first E-fuse MAC
>> cpsw
>> Hit any key to stop autoboot: 0
>> => usb reset
>> resetting USB...
>> USB0: scanning bus 0 for devices... 2 USB Device(s) found
>> scanning usb for storage devices... 0 Storage Device(s) found
>>
>>
>> => usb tree
>> USB device tree:
>> 1 Hub (480 Mb/s, 100mA)
>> | USB2.0 Hub
>> |
>> +-2 Vendor specific (480 Mb/s, 500mA)
>> Quectel, Incorporated UMTS/HSPA Module
>>
>> U-Boot finds a hub and a 3g modem attached to it, but the USB drive,
>> that is also attached to this hub won't be detected.
>
> maybe stupid reply but did you test on other board or with other usb
> device? I can check on BBB in the evening
> and post findings.
And please provide your u-boot version.
>> So far I haven't tried to bisect the issue (have to find a working
>> commit including my board), but the same setup is working for 2014.07
>> u-boot. Am I the only one or are other am335x based also affected?
Bisect result:
2ef117fe4fce4e1af282ac2bbb0be36c41d15e2b is the first bad commit
commit 2ef117fe4fce4e1af282ac2bbb0be36c41d15e2b
Author: Stefan Roese <s...@denx.de>
Date: Tue Mar 15 13:59:13 2016 +0100
usb: Remove 200 ms delay in usb_hub_port_connect_change()
This patch removes 2 mdelay(200) calls from usb_hub_port_connect_change().
These delays don't seem to be necessary. At least not in my tests. Here
the number for a custom x86 Bay Trail board (not in mainline yet) with
a quite large and complex USB hub infrastructure.
Without this patch:
starting USB...
USB0: USB EHCI 1.00
scanning bus 0 for devices... 9 USB Device(s) found
time: 28.415 seconds
With this patch:
starting USB...
USB0: USB EHCI 1.00
scanning bus 0 for devices... 9 USB Device(s) found
time: 24.003 seconds
So ~4.5 seconds of USB scanning time reduction.
Signed-off-by: Stefan Roese <s...@denx.de>
Cc: Simon Glass <s...@chromium.org>
Acked-by: Hans de Goede <hdego...@redhat.com>
Tested-by: Stephen Warren <swar...@nvidia.com>
Cc: Marek Vasut <ma...@denx.de>
:040000 040000 1902518572402e9b376f78b01f610e5d732ccfe4
c98db076cbb839d6a1c0975cbdb92e1ccc82cbeb M common
Yegor
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