linux-kernel - Re: [PATCH 6/7] pinctrl: tegra: Add DT binding for io pads control

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Message-ID: <571119C6.6000107@nvidia.com>
Date:	Fri, 15 Apr 2016 22:11:42 +0530
From:	Laxman Dewangan <ldewangan@...dia.com>
To:	Jon Hunter <jonathanh@...dia.com>, <swarren@...dotorg.org>,
	<thierry.reding@...il.com>, <linus.walleij@...aro.org>,
	<gnurou@...il.com>, <robh+dt@...nel.org>, <mark.rutland@....com>
CC:	<linux-tegra@...r.kernel.org>, <devicetree@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>, <linux-gpio@...r.kernel.org>
Subject: Re: [PATCH 6/7] pinctrl: tegra: Add DT binding for io pads control


On Friday 15 April 2016 09:15 PM, Jon Hunter wrote:
> On 15/04/16 16:14, Laxman Dewangan wrote:
>>
>> I used pins as this is the property from pincon generic so that I can
>> use the generic implementation.
>>
>> Here, I will not go to the pin level control as HW does not support pin
>> level control.
>>
>> I will say the unit should be interface level. Should we say
>> IO_GROUP_CSIA, IO_GROUP_CSIB etc?
> So we need to reflect the hardware in device-tree and although yes the
> power-down for the CSI_x_xxx pads are all controlled together as a
> single group, it does not feel right that we add a pseudo pin called
> csix to represent these.
>
> The CSI_x_xxx pads are already in device-tree and so why not add a
> property to each of these pads which has the IO rail information for
> power-down and voltage-select?

Which dt binding docs have these?
I looked for nvidia,tegra210-pinmux.txt and not able to find csi_xxx.

Here I dont want to refer the individual pins as control should be as group.