linux-kernel - Re: Use of pinctrl-single for external device over I2C

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Date:	Wed, 24 Jun 2015 21:38:39 -0700
From:	Tony Lindgren <tony@...mide.com>
To:	Vaibhav Hiremath <vaibhav.hiremath@...aro.org>
Cc:	Linus Walleij <linus.walleij@...aro.org>, lee.jones@...aro.org,
	sameo@...ux.intel.com, linux-gpio@...r.kernel.org,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	linux-kernel@...r.kernel.org
Subject: Re: Use of pinctrl-single for external device over I2C

* Vaibhav Hiremath <vaibhav.hiremath@...aro.org> [150624 10:12]:
> 
> I do not like this, as this is not HW feature, so DT may not be right
> approach.
> 
> So I will dig more from either runtime or Compile time option to use
> regmap_ Vs raw read/writes.

Can't you just check if the pinctrl node has compatible = "syscon"
property?

A compile time option won't work for sure. I don't know what you
would check at runtime as you do not know what the bus is behind
syscon.

Regards,

Tony
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