From mboxrd@z Thu Jan 1 00:00:00 1970 From: Stephen Warren Date: Tue, 15 Mar 2016 09:52:37 -0600 Subject: [U-Boot] [PATCH v3 4/4] usb: Change power-on / scanning timeout handling In-Reply-To: <56E80B3B.2030209@denx.de> References: <1457950693-564-1-git-send-email-sr@denx.de> <1457950693-564-5-git-send-email-sr@denx.de> <56E6FA17.1030705@wwwdotorg.org> <56E80B3B.2030209@denx.de> Message-ID: <56E82FC5.8080101@wwwdotorg.org> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de 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 >> >> (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