Re: [RFC PATCH 04/11] omap4: SDP: Pass regulator_init_data from DT

Mark Brown
2011-09-16T09:00:28Z

On Fri, Sep 16, 2011 at 12:47:05PM +0530, Rajendra Nayak wrote:
> On Thursday 15 September 2011 07:16 PM, Mark Brown wrote:
> >On Thu, Sep 15, 2011 at 04:52:00PM +0530, Rajendra Nayak wrote:

> >>+Required properties:
> >>+- compatible: Must be "regulator","ti,twl-reg";

> >I'd expect listings for the specific chips too.

> I just did'nt do that because we have just one driver for
> all twl chips (twl4030/twl6030/twl6025) and there seems to be
> no real need to identify specific chips while we could
> do knowing just the chip family.

The driver can bind to as many names as it likes.

> >>+ xyz-regulator: regulator@0 {
> >>+ compatible = "regulator","ti,twl-reg";
> >>+ ti,reg-id =<37>; /* TWL6030_REG_VAUX1_6030 */

> >These magic numbers are *very* Linux specific, we should have a better
> >way of specifying regulators - I'd off the top of my head expect that
> >the compatible property would identify the regulator.

> The driver seems to use a per-regulator table, and it uses the above
> id to indexed into it. I could probably do it with the compatible

I know what the driver is doing, the problem is that it's very much
specific to Linux (and Linux may change the numbers at some point).

> property, but that would mean I have a compatible for *each* regulator
> instance, like "ti,twl-reg-vaux1", "ti,twl-reg-vmmc" etc.
> Does that sound reasonable?

Yes.