On 03/15/2016 07:16 AM, Stefan Roese wrote:
Hi Stephen,
On 14.03.2016 18:51, Stephen Warren wrote:
On 03/14/2016 04:18 AM, Stefan Roese wrote:
This patch changes the USB port scanning procedure and timeout handling in the following ways: ..
Tested-by: Stephen Warren swarren@nvidia.com
(including some tests with a 7-port (i.e. 2 nested 4-port) USB hub maxed out with devices).
Thanks for doing those tests on your platform. I'm interested, how big the time difference between stock U-Boot and the patched version is though. Could you please post those numbers once for reference, if its not too much trouble?
It looks like ~17s for v2016.01, and ~6s for u-boot/master from yesterday plus these patches, with the following configuration:
Tegra124 (Jetson TK1) # usb tree USB device tree: 1 Hub (480 Mb/s, 0mA) u-boot EHCI Host Controller
1 Hub (480 Mb/s, 0mA) | u-boot EHCI Host Controller | +-2 Hub (480 Mb/s, 100mA) | USB2.0 Hub | +-3 Hub (480 Mb/s, 100mA) | | USB2.0 Hub | | | +-6 Mass Storage (480 Mb/s, 2mA) | | Sunplus Innovation Technology. USB to Serial-ATA bridge FF980813AF0000000000005FF16BFF | | | +-7 Mass Storage (480 Mb/s, 100mA) | | Generic Mass Storage Device 00000000000006 | | | +-8 Human Interface (1.5 Mb/s, 70mA) | | LITEON Technology USB Multimedia Keyboard | | | +-9 Human Interface (1.5 Mb/s, 100mA) | Microsoft Microsoft IntelliMouse� Explore | +-4 Vendor specific (480 Mb/s, 250mA) | ASIX Elec. Corp. AX88x72A 000001 | +-5 Mass Storage (480 Mb/s, 200mA) SanDisk Extreme AA010114140242512567