linux-kernel - Re: [PATCH 2/3] pinctrl: nsp: add pinmux driver support for Broadcom NSP SoC

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Message-ID: <CACRpkdaytru_AOK4p9Si9fJs6=DKgrqJ6HV4-To_a8Q+R+40jA@mail.gmail.com>
Date:	Thu, 10 Dec 2015 17:50:24 +0100
From:	Linus Walleij <linus.walleij@...aro.org>
To:	Ray Jui <rjui@...adcom.com>
Cc:	Yendapally Reddy Dhananjaya Reddy <yrdreddy@...adcom.com>,
	Stephen Warren <swarren@...dotorg.org>,
	Scott Branden <sbranden@...adcom.com>,
	Jon Mason <jonmason@...adcom.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-gpio@...r.kernel.org" <linux-gpio@...r.kernel.org>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	bcm-kernel-feedback-list <bcm-kernel-feedback-list@...adcom.com>
Subject: Re: [PATCH 2/3] pinctrl: nsp: add pinmux driver support for Broadcom
 NSP SoC

On Mon, Nov 30, 2015 at 6:05 PM, Ray Jui <rjui@...adcom.com> wrote:
> Hi Linus,
>
> On 11/30/2015 4:49 AM, Linus Walleij wrote:
>>
>> On Fri, Nov 20, 2015 at 6:57 PM, Yendapally Reddy Dhananjaya Reddy
>> <yrdreddy@...adcom.com> wrote:
>>
>>> This adds the initial support of the Broadcom NSP pinmux driver.
>>>
>>> Signed-off-by: Yendapally Reddy Dhananjaya Reddy <yrdreddy@...adcom.com>
>>
>>
>> So what does Ray and Stephen say about this?
>>
>> Is the hardware unique enough to warrant its own driver?
>>
>> Or should it utilize/extend one of the existing Broadcom
>> drivers?
>
>
> Currently, the IOMUX configurations in Cygnus, NSP, and NS2 are completely
> different and require a separate driver to each of these SoCs. We now
> realize the shortcomings and have been communicating with our ASIC team.
> We'd like to fix this for the next-gen of our SoC. We are driving towards
> using a register layout that will allow us to use just "pinctrl-single" and
> "pinconf-single."

OK can you provide your reviews for the NSP driver?

Yours,
Linus Walleij
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