linux-kernel - Re: [PATCH v2 0/9] Tegra xHCI support

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Message-ID: <CAL1qeaGuMWbaZ4GQWATtrnYe-RjuTwLpFnrdhibWGNWm0iF+=g@mail.gmail.com>
Date:	Mon, 18 Aug 2014 12:35:42 -0700
From:	Andrew Bresticker <abrestic@...omium.org>
To:	Stephen Warren <swarren@...dotorg.org>
Cc:	Thierry Reding <thierry.reding@...il.com>,
	"linux-tegra@...r.kernel.org" <linux-tegra@...r.kernel.org>,
	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>,
	Russell King <linux@....linux.org.uk>,
	Jassi Brar <jassisinghbrar@...il.com>,
	Linus Walleij <linus.walleij@...aro.org>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Mathias Nyman <mathias.nyman@...el.com>,
	Grant Likely <grant.likely@...aro.org>,
	Alan Stern <stern@...land.harvard.edu>,
	Arnd Bergmann <arnd@...db.de>,
	Kishon Vijay Abraham I <kishon@...com>,
	"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	"linux-usb@...r.kernel.org" <linux-usb@...r.kernel.org>
Subject: Re: [PATCH v2 0/9] Tegra xHCI support

On Mon, Aug 18, 2014 at 10:30 AM, Stephen Warren <swarren@...dotorg.org> wrote:
> On 08/18/2014 11:08 AM, Andrew Bresticker wrote:
>>
>> This series adds support for xHCI on NVIDIA Tegra SoCs.  This includes:
>>   - adding a driver for the mailbox used to communicate with the xHCI
>>     controller's firmware,
>>   - extending the XUSB pad controller driver to support the USB PHY
>>     types (UTMI, HSIC, and USB3), and
>>   - adding a xHCI host-controller driver.
>
>
> Can you please remind us what dependencies exist between the patches? In
> other words, is it possible to apply parts of the series to their usual
> subsystem branches, or does the whole thing need to go into a single topic
> branch in order to avoid compile-time problems, or run-time problems in
> features unrelated to the new functionality? Thanks.

The whole thing will probably need to go into one branch.  Patch 4/9
("pinctrl: tegra-xusb: Add USB PHY support") has compile-time
dependencies on patch 2/9 ("mailbox: Add NVIDIA Tegra XUSB mailbox
driver") and patch 6/9 ("usb: xhci: Add NVIDIA Tegra xHCI
host-controller driver") has compile-time dependencies on both patches
2/9 and 4/9.
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