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

From: Laxman Dewangan
Date: Fri Apr 15 2016 - 12:53:12 EST



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.