M25P80 Regulator Question

[Rhyland Klein <rklein-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>]

I am looking at enabling support for W25Q32DW  SPI chip on a Tegra
platform. I found that the m25p80 driver already supports the chip, so
enabling it through devicetree is simple:


+       spi@7000da00 {
+               status = "okay";
+               spi-flash@0 {
+                       compatible = "winbond,w25q32dw";
+                       reg = <0>;
+                       spi-max-frequency = <20000000>;
+               };
+       };

However, it seems on our platform, we need to ensure a regulator is on
to be able to access the SPI chip. I was wondering if there is already
some binding defined for such a supply. I looked at the binding doc for
m25p80 and didn't see anything obvious, nor did I find anything else
obvious while looking.

Is there some mechanism for defining this dependency?

Thanks,
Rhyland

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