From: Stephen Warren <swarren@wwwdotorg.org>
To: u-boot@lists.denx.de
Subject: [U-Boot] [PATCH 1/6] usb: legacy_hub_port_reset(): Speedup hub reset handling
Date: Thu, 10 Mar 2016 17:06:15 -0700 [thread overview]
Message-ID: <56E20BF7.5070302@wwwdotorg.org> (raw)
In-Reply-To: <1457625012-1268-2-git-send-email-sr@denx.de>
On 03/10/2016 08:50 AM, Stefan Roese wrote:
> Start with a short USB hub reset delay of 10ms. This can be enough for
> some configurations.
>
> The 2nd delay at the of the loop is completely removed. Since the delay
> hasn't been long enough, a longer delay time of 200ms is assigned. And
> will be used in the next loop round.
>
> This hub reset handling is also used in the v4.4 Linux USB driver,
> hub_port_reset().
This patch,
Tested-by: Stephen Warren <swarren@nvidia.com>
(Tested with 1 USB SD card reader, 1 USB Ethernet dongle, 4 USB flash
drives, which IIRC includes some of the problematic devices that
triggered previous changes to the USB enumeration code in U-Boot)
next prev parent reply other threads:[~2016-03-11 0:06 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-03-10 15:50 [U-Boot] [PATCH 0/6] usb: Reduce USB scanning time Stefan Roese
2016-03-10 15:50 ` [U-Boot] [PATCH 1/6] usb: legacy_hub_port_reset(): Speedup hub reset handling Stefan Roese
2016-03-10 18:51 ` Hans de Goede
2016-03-11 6:37 ` Stefan Roese
2016-03-11 0:06 ` Stephen Warren [this message]
2016-03-10 15:50 ` [U-Boot] [PATCH 2/6] usb: Remove 200 ms delay in usb_hub_port_connect_change() Stefan Roese
2016-03-10 18:55 ` Hans de Goede
2016-03-11 6:34 ` Stefan Roese
2016-03-11 6:35 ` Stefan Roese
2016-03-11 0:06 ` Stephen Warren
2016-03-10 15:50 ` [U-Boot] [PATCH 3/6] usb: Remove 1 second per port timeout in usb_hub_configure() Stefan Roese
2016-03-10 18:59 ` Hans de Goede
2016-03-10 15:50 ` [U-Boot] [PATCH 4/6] usb: usb_hub_power_on(): Use 100ms power-on delay instead of 1 sec (optionally) Stefan Roese
2016-03-10 19:12 ` Hans de Goede
2016-03-11 9:05 ` Stefan Roese
2016-03-11 10:13 ` Stefan Roese
2016-03-11 10:32 ` Hans de Goede
2016-03-11 10:42 ` Stefan Roese
2016-03-10 15:50 ` [U-Boot] [PATCH 5/6] usb: Don't reset the USB hub a 2nd time Stefan Roese
2016-03-10 19:13 ` Hans de Goede
2016-03-11 6:43 ` Stefan Roese
2016-03-11 0:07 ` Stephen Warren
2016-03-10 15:50 ` [U-Boot] [PATCH 6/6] usb: Implement static USB port configuration to speed up USB scanning Stefan Roese
2016-03-10 19:18 ` Hans de Goede
2016-03-11 15:08 ` Stefan Roese
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