linux-kernel - Re: [PATCH v12 0/3] Mediatek xHCI support

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Message-ID: <564F0211.3090605@intel.com>
Date:	Fri, 20 Nov 2015 13:20:49 +0200
From:	Mathias Nyman <mathias.nyman@...el.com>
To:	Chunfeng Yun <chunfeng.yun@...iatek.com>
CC:	Rob Herring <robh+dt@...nel.org>,
	Mark Rutland <mark.rutland@....com>,
	Matthias Brugger <matthias.bgg@...il.com>,
	Felipe Balbi <balbi@...com>,
	Sascha Hauer <s.hauer@...gutronix.de>,
	devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	Roger Quadros <rogerq@...com>, linux-usb@...r.kernel.org,
	linux-mediatek@...ts.infradead.org,
	John Crispin <blogic@...nwrt.org>,
	Daniel Kurtz <djkurtz@...omium.org>,
	Sergei Shtylyov <sergei.shtylyov@...entembedded.com>,
	Pawel Moll <pawel.moll@....com>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Kumar Gala <galak@...eaurora.org>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: Re: [PATCH v12 0/3] Mediatek xHCI support

On 17.11.2015 11:18, Chunfeng Yun wrote:
>  From 577f68d9c0ca1531d5f9cae0dcbea2ba116c8551 Mon Sep 17 00:00:00 2001
> From: Chunfeng Yun <chunfeng.yun@...iatek.com>
> Date: Tue, 17 Nov 2015 17:09:05 +0800
> Subject: [PATCH v12 0/3] Mediatek xHCI support
>
> The patch supports MediaTek's xHCI controller.
>
> There are some differences from xHCI spec:
> 1. The interval is specified in 250 * 8ns increments for Interrupt Moderation
> Interval(IMODI) of the Interrupter Moderation(IMOD) register, it is 8 times as
> much as that defined in xHCI spec.
>
> 2. For the value of TD Size in Normal TRB, MTK's xHCI controller defines a
> number of packets that remain to be transferred for a TD after processing all
> Max packets in all previous TRBs,that means don't include the current TRB's,
> but in xHCI spec it includes the current ones.
>
> 3. To minimize the scheduling effort for synchronous endpoints in xHC, the MTK
> architecture defines some extra SW scheduling parameters for HW. According to
> these parameters provided by SW, the xHC can easily decide whether a
> synchronous endpoint should be scheduled in a specific uFrame. The extra SW
> scheduling parameters are put into reserved DWs in Slot and Endpoint Context.
> And a bandwidth scheduler algorithm is added to support such feature.
>
> A usb3.0 phy driver is also added which used by mt65xx SoCs platform, it
> supports two usb2.0 ports and one usb3.0 port.
>

Added to my tree, I'll send it forward to Greg shortly

Fixed the documentation "wakeup_deb_p0" -> "wakeup_deb_p1" typo as well

-Mathias  

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