From: Stephen Warren <swarren@wwwdotorg.org>
To: u-boot@lists.denx.de
Subject: [U-Boot] [PATCH 7/7] usb: hub: Increase the query delay
Date: Wed, 4 May 2016 11:11:53 -0600 [thread overview]
Message-ID: <572A2D59.2080903@wwwdotorg.org> (raw)
In-Reply-To: <1462308680-9366-7-git-send-email-marex@denx.de>
On 05/03/2016 02:51 PM, Marek Vasut wrote:
> Increase the query delay, otherwise some sticks are not detected.
> The problem shows up on the USB bus analyzer such that the stick
> takes longer time to switch from FS mode to HS mode than the code
> allows.
> diff --git a/common/usb_hub.c b/common/usb_hub.c
> @@ -145,7 +145,7 @@ static void usb_hub_power_on(struct usb_hub_device *hub)
> * Do a minimum delay of the larger value of 100ms or pgood_delay
> * so that the power can stablize before the devices are queried
> */
> - hub->query_delay = get_timer(0) + max(100, (int)pgood_delay);
> + hub->query_delay = get_timer(0) + max(1000, (int)pgood_delay);
The comment right above that line of code should be updated to say 1000
not 100, and to mention why we're using the non-spec value.
next prev parent reply other threads:[~2016-05-04 17:11 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-05-03 20:51 [U-Boot] [PATCH 1/7] usb: Don't init pointer to zero, but NULL Marek Vasut
2016-05-03 20:51 ` [U-Boot] [PATCH 2/7] usb: dwc2: Resend setup packet in all fail cases Marek Vasut
2016-05-04 9:36 ` Chin Liang See
2016-05-03 20:51 ` [U-Boot] [PATCH 3/7] usb: dwc2: Throttle the setup packet resending Marek Vasut
2016-05-04 9:37 ` Chin Liang See
2016-05-04 17:08 ` Stephen Warren
2016-05-04 21:21 ` Marek Vasut
2016-05-06 18:04 ` Marek Vasut
2016-05-03 20:51 ` [U-Boot] [PATCH 4/7] usb: Wait after sending Set Configuration request Marek Vasut
2016-05-04 7:41 ` Stefan Roese
2016-05-04 9:45 ` Chin Liang See
2016-05-04 10:00 ` Stefan Roese
2016-05-04 10:24 ` Chin Liang See
2016-05-05 4:14 ` Sriram Dash
2016-05-04 10:21 ` Marek Vasut
2016-05-03 20:51 ` [U-Boot] [PATCH 5/7] usb: Assure Get Descriptor request is in separate microframe Marek Vasut
2016-05-04 8:03 ` Stefan Roese
2016-05-04 10:25 ` Marek Vasut
2016-05-04 17:10 ` Stephen Warren
2016-05-03 20:51 ` [U-Boot] [PATCH 6/7] usb: hub: Don't continue on get_port_status failure Marek Vasut
2016-05-04 8:05 ` Stefan Roese
2016-05-04 9:38 ` Chin Liang See
2016-05-03 20:51 ` [U-Boot] [PATCH 7/7] usb: hub: Increase the query delay Marek Vasut
2016-05-04 8:07 ` Stefan Roese
2016-05-04 11:39 ` Marek Vasut
2016-05-04 16:27 ` Stefan Roese
2016-05-04 17:11 ` Stephen Warren [this message]
2016-05-04 21:32 ` [U-Boot] [PATCH] " Marek Vasut
2016-05-04 21:34 ` Stephen Warren
2016-05-04 21:38 ` Marek Vasut
2016-05-04 7:36 ` [U-Boot] [PATCH 1/7] usb: Don't init pointer to zero, but NULL Stefan Roese
2016-05-04 9:35 ` Chin Liang See
2016-05-06 16:36 ` Marek Vasut
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