On 26/09/13 15:50, Thierry Reding wrote:

quoted

I thought the NAK was for the DT parts, not for the sequences as such. I
don't remember anyone shooting down the idea of defining power sequences
inside a driver.

Yes, but the DT parts were the primary reason why they were written in
the first place. Without DT we can just use the existing hooks to do the
sequencing. There is not much to be gained from power sequences.

Board hooks? Those cannot be used with DT boot.

But yes, the power sequences without DT (or platform data) parts cannot
handle with board-specific-things. I still think it'd be a very nice
thing to have inside the drivers. A single driver could more easily
handle bunch of somewhat similar devices, by specifying power sequences
in a table, one sequence for each device.

There is unfortunately always the next crazy setup that one can think
of. I personally prefer to support what we have (or at least the
majority of that) with something generic and tackle the more exotic
setups later on (or when they appear, as the case may be).

As things stand right now, there's no way to get the simplest panel
setup to work properly if you use DT. By adding both an enable GPIO and
a power supply regulator we can at least cover the sane use-cases with
some sane and pretty simple code.

Sure, no disagreement there.

 Tomi