[PATCH 1/3] soc/tegra: pmc: set IO pad power state and voltage via pinctrl fw

[Jon Hunter]

On 02/08/18 12:59, Venkat Reddy Talla 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. These groups are referred
> to as IO pads.The power state and voltage control of IO pins
> can be done at IO pads level.
> 
> Tegra SoCs support powering down IO pads when they are
> not used even in the active state of system.
> This saves power from that IO interface. Also it supports
> multiple voltage level in IO pins for interfacing on
> some of pads. The IO pad voltage is automatically detected
> till Tegra124, hence SW need not to configure this.
> But from Tegra210, the automatic detection logic has been
> removed, hence SW need to explicitly set the IO pad
> voltage into IO pad configuration registers.
> 
> Add support to configure the power state and voltage level
> of the IO pads from client driver via pincontrol framework.
> 
> Signed-off-by: Venkat Reddy Talla <vreddytalla at nvidia.com>

This appears to be a duplicate effort of the following which we have
been reviewing ...

https://marc.info/?l=linux-tegra&m=153295930808915&w=2

Cheers
Jon

-- 
nvpublic