From: Shawn Guo [mailto:shawnguo at kernel.org]

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Another thing is that we can use a pins-tool program developed by
NXP to  generate the pinctrl configuration code that can be used
directly in dts. This tiny program can avoid pin function
conflict. As on i.MX, there are so may pins, each pin can be used for up 8

function.

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Configuring the pins is a time-consuming work.  This tools is
very useful for

customer to generate the dts code.

I understand, but every silicon vendor has such a tool, all are
different, proprietary and unfriendly to programmers and open
source developers, who need to understand how the hardware is
working without magic tools and secret data sheets to fix bugs.

For the people working with maintaining the code it is paramount
that DTS files are self-descriptive.

OK.  Thanks for your comments.  Adding generic-pinconf in imx
pinctrl needs some time to finish and the legacy method still need be here

even if generic-pinconf is added.

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Do you plan to pick this legacy binding patch for now?

As I said earlier:

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atleast I need an indication from one of the i.MX maintainers how
they want to proceed.

Sorry for being late for the discussion.

To be honest, I did not really expect so many i.MX6 variants coming to us.  Just
out of curiosity, are there any more in the pipeline to come, or is this the last
known one?

AFAIK, this should be the last variant of i.MX6. But not the last one of i.MX family.

I understand that there are now more generic support available at pinctrl core
level for us to use than the time we initial designed i.MX pinctrl driver.  But I
intend to agree with Jacky that imx6sll can be supported by the existing driver,
since it doesn't require any additional driver changes.

If any new generation of i.MX family require changes on the existing pinctrl
driver, we should probably push back for a redesign to use generic support as
much as possible.  @Jacky, how does i.MX8 pinctrl look like?  How same or
different as/from i.MX6 pinctrl?

i.MX8 kernel support is in development stage. The code has not been finalized.
For now, i.MX8 shares most of the pinctrl code with i.MX6 and use the same pinconfig method.

Just my opinion.

Shawn