linux-kernel - Re: [PATCH v3 0/5] Add support for Fujitsu USB host controller

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Message-ID: <20150127152250.GB13776@saruman.tx.rr.com>
Date:	Tue, 27 Jan 2015 09:22:50 -0600
From:	Felipe Balbi <balbi@...com>
To:	Sneeker Yeh <sneeker.yeh@...il.com>
CC:	Rob Herring <robh+dt@...nel.org>, Pawel Moll <pawel.moll@....com>,
	Mark Rutland <mark.rutland@....com>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Kumar Gala <galak@...eaurora.org>, Felipe Balbi <balbi@...com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Mathias Nyman <mathias.nyman@...el.com>,
	Grant Likely <grant.likely@...aro.org>,
	Huang Rui <ray.huang@....com>,
	Kishon Vijay Abraham I <kishon@...com>,
	<devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
	<linux-usb@...r.kernel.org>, <linux-omap@...r.kernel.org>,
	Andy Green <andy.green@...aro.org>,
	Jassi Brar <jaswinder.singh@...aro.org>,
	Sneeker Yeh <Sneeker.Yeh@...fujitsu.com>
Subject: Re: [PATCH v3 0/5] Add support for Fujitsu USB host controller

Hi,

On Sun, Jan 25, 2015 at 04:13:23PM +0800, Sneeker Yeh wrote:
> These patches add support for XHCI compliant Host controller found
> on Fujitsu Socs, and are based on http://lwn.net/Articles/629162/
> The first patch is to add Fujitsu glue layer of Synopsis DesignWare USB3 driver
> and last four patch is about quirk implementation of errata in Synopsis
> DesignWare USB3 IP.
> 
> Patch 1 introduces a quirk with device disconnection management necessary
> Synopsys Designware USB3 IP with versions < 3.00a and hardware configuration
> DWC_USB3_SUSPEND_ON_DISCONNECT_EN=1. It solves a problem where without the
> quirk, that host controller will die after a usb device is disconnected from
> port of root hub.
> 
> Patch 2 is to set Synopsis quirk in xhci platform driver based on xhci platform
> data.
> 
> Patch 3 is to add a revison number 2.90a and 3.00a of Synopsis DesignWare USB3
> IP core driver.
> 
> Patch 4 introduces using a quirk based on a errata of Synopsis
> DesignWare USB3 IP which is versions < 3.00a and has hardware configuration
> DWC_USB3_SUSPEND_ON_DISCONNECT_EN=1, which cannot be read from software. As a
> result this quirk has to be enabled via platform data or device tree.
> 
> Patch 5 introduces Fujitsu Specific Glue layer in Synopsis DesignWare USB3 IP
> driver. 
> 

Mathias, let me know how you want to handle this. Either I take them
all, or you take them all. What do you prefer ?

-- 
balbi

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