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From: Greg KH <gregkh-hQyY1W1yCW8ekmWlsbkhG0B+6BGkLq7r@public.gmane.org>
To: Peter Chen <peter.chen-KZfg59tc24xl57MIdRCFDg@public.gmane.org>
Cc: shawn.guo-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org,
	linux-usb-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org,
	kernel-bIcnvbaLZ9MEGnE8C9+IrQ@public.gmane.org,
	devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	robh+dt-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org,
	pawel.moll-5wv7dgnIgG8@public.gmane.org,
	mark.rutland-5wv7dgnIgG8@public.gmane.org
Subject: Re: [PATCH 02/10] usb: chipidea: define stream mode disable for both roles
Date: Tue, 28 Jul 2015 22:08:28 -0700	[thread overview]
Message-ID: <20150729050828.GA5502@kroah.com> (raw)
In-Reply-To: <1438137734-27311-3-git-send-email-peter.chen-KZfg59tc24xl57MIdRCFDg@public.gmane.org>

On Wed, Jul 29, 2015 at 10:42:06AM +0800, Peter Chen wrote:
> The system bus and chipidea IP have different limitations for
> both host and device mode.
> For example, with below errata, we need to enable SDIS(Stream Disable Mode)
> at host mode. But we don't want it for device mode at the same system.
> 
> TAR 9000378958
> Title: Non-Double Word Aligned Buffer Address Sometimes Causes Host to Hang on OUT Retry
> Impacted Configuration: Host mode, all transfer types
> Description:
> The host core operating in streaming mode may under run while sending the data packet of an OUT transaction. This under run can occur if there are unexpected system delays in fetching the remaining packet data from memory. The host forces a bad CRC on the packet, the device detects the error and discards the packet. The host then retries a Bulk, Interrupt, or Control transfer if an under run occurs according to the USB specification.

<snip>

Properly format this huge wall of text please, don't commit this as-is.

thanks,

greg k-h
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  parent reply	other threads:[~2015-07-29  5:08 UTC|newest]

Thread overview: 21+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-07-29  2:42 [PATCH 00/10] USB: chipidea misc patches Peter Chen
     [not found] ` <1438137734-27311-1-git-send-email-peter.chen-KZfg59tc24xl57MIdRCFDg@public.gmane.org>
2015-07-29  2:42   ` [PATCH 01/10] usb: chipidea: udc: zero-length packet is only needed for TX Peter Chen
2015-07-29  2:42   ` [PATCH 02/10] usb: chipidea: define stream mode disable for both roles Peter Chen
     [not found]     ` <1438137734-27311-3-git-send-email-peter.chen-KZfg59tc24xl57MIdRCFDg@public.gmane.org>
2015-07-29  5:08       ` Greg KH [this message]
     [not found]         ` <20150729050828.GA5502-U8xfFu+wG4EAvxtiuMwx3w@public.gmane.org>
2015-07-29  4:40           ` Peter Chen
2015-07-29  5:10       ` Greg KH
     [not found]         ` <20150729051016.GB5502-U8xfFu+wG4EAvxtiuMwx3w@public.gmane.org>
2015-07-29  4:41           ` Peter Chen
2015-07-29  5:51       ` Sascha Hauer
     [not found]         ` <20150729055155.GD18700-bIcnvbaLZ9MEGnE8C9+IrQ@public.gmane.org>
2015-07-29  6:02           ` Sascha Hauer
2015-07-29  2:42   ` [PATCH 03/10] usb: chipidea: imx: add stream mode enable for device mode at imx6sl/imx6sx Peter Chen
2015-07-29  2:42   ` [PATCH 04/10] Doc: usb: ci-hdrc-usb2: add ahb-burst-config for binding doc Peter Chen
2015-07-29  2:42   ` [PATCH 05/10] ARM: imx6: set ahb-burst-config as 0 for USB Peter Chen
2015-07-29  2:42   ` [PATCH 06/10] usb: chipidea: add ahb burst configuration interface Peter Chen
2015-07-29  2:42   ` [PATCH 07/10] usb: chipidea: usbmisc_imx: add unburst setting for imx6 Peter Chen
2015-07-29  8:30     ` Lothar Waßmann
     [not found]       ` <20150729103022.7cfe0466-VjFSrY7JcPWvSplVBqRQBQ@public.gmane.org>
2015-07-29  7:57         ` Peter Chen
2015-07-29 10:19           ` Lothar Waßmann
     [not found]             ` <20150729121946.009e7f03-VjFSrY7JcPWvSplVBqRQBQ@public.gmane.org>
2015-07-30  2:36               ` Peter Chen
2015-07-29  2:42   ` [PATCH 08/10] Doc: usb: ci-hdrc-usb2: add tx(rx)-burst-config-dword for binding doc Peter Chen
2015-07-29  2:42   ` [PATCH 09/10] ARM: imx6: change default burst size for USB Peter Chen
2015-07-29  2:42   ` [PATCH 10/10] usb: chipidea: add tx/rx burst size configuration interface Peter Chen

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