From mboxrd@z Thu Jan 1 00:00:00 1970 From: Peter Chen Subject: Re: [PATCH 07/10] usb: chipidea: usbmisc_imx: add unburst setting for imx6 Date: Wed, 29 Jul 2015 15:57:29 +0800 Message-ID: <20150729075728.GC27605@shlinux2> References: <1438137734-27311-1-git-send-email-peter.chen@freescale.com> <1438137734-27311-8-git-send-email-peter.chen@freescale.com> <20150729103022.7cfe0466@ipc1.ka-ro> Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: Content-Disposition: inline In-Reply-To: <20150729103022.7cfe0466-VjFSrY7JcPWvSplVBqRQBQ@public.gmane.org> Sender: linux-usb-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Lothar =?iso-8859-1?Q?Wa=DFmann?= Cc: shawn.guo-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org, linux-usb-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, mark.rutland-5wv7dgnIgG8@public.gmane.org, devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, pawel.moll-5wv7dgnIgG8@public.gmane.org, robh+dt-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org, kernel-bIcnvbaLZ9MEGnE8C9+IrQ@public.gmane.org, linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org List-Id: devicetree@vger.kernel.org On Wed, Jul 29, 2015 at 10:30:22AM +0200, Lothar Wa=DFmann wrote: > Hi, >=20 > > With this setting and AHBBRST at SBUSCFG as "Incremental burst of > > unspecified length", each unburst size can be taken as one single t= ransfer. > > It is benefit for unburst size transfer. > >=20 > What is an 'unburst'? >=20 Assume burst size is 8 dword, unburst size 't' < 8. With this feature, 't' length payload can be taken as one burst transfer, otherwise, the single transfer (1 dword) will be used. --=20 Best Regards, Peter Chen -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html