linux-kernel - Re: [PATCH 0/6] soc/tegra: Add support for IO pads control via pinctrl interface

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Message-ID: <57288DC1.20405@nvidia.com>
Date:	Tue, 3 May 2016 12:38:41 +0100
From:	Jon Hunter <jonathanh@...dia.com>
To:	Laxman Dewangan <ldewangan@...dia.com>, <swarren@...dotorg.org>,
	<linus.walleij@...aro.org>, <gnurou@...il.com>,
	<robh+dt@...nel.org>, <mark.rutland@....com>,
	<thierry.reding@...il.com>
CC:	<linux-tegra@...r.kernel.org>, <devicetree@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>, <linux-gpio@...r.kernel.org>
Subject: Re: [PATCH 0/6] soc/tegra: Add support for IO pads control via
 pinctrl interface


On 02/05/16 13:17, Laxman Dewangan wrote:
> The IO pins of Tegra SoCs are grouped for common control of IO
> interface like setting voltage signal levels and power state of
> the interface. The group is generally referred as IO pads. The 
> power state and voltage control of IO pins can be done at IO pads
> level.
> 
> Before Tegra210, the voltage level of IO rails are auto detected and
> configure IO pads accordingly but on T210, it is require to set
> explicitly by SW.
> 
> This series:
> - add public APIs from Tegra PMC interface for io pads control
>   for power state and voltage levels.
> - Add pincontrol driver to use these APIs to configure the IO
>   pads voltage and power state.
> 
> ---
> Changes from V1: 
> - Use pinconfig generic property for power enable/disable.
> - Rename power-source-voltage properties.
> - Make all register read/write value to u32.
> - Add IO pads macros and APIs which is nearest definiton of HW blocks.

Nit ... if this is a V2 it should be stated in the subject.

Jon