On Wednesday, March 29, 2017, Geert Uytterhoeven wrote:
> >> +Example:
> >> +rtc: rtc@fcff1000 {
> >> + compatible = "renesas,r7s72100-rtc", "renesas,sh-rtc";
> >> + reg = <0xfcff1000 0x2e>;
> >> + interrupts = <GIC_SPI 276 IRQ_TYPE_EDGE_RISING
> >> + GIC_SPI 277 IRQ_TYPE_EDGE_RISING
> >> + GIC_SPI 278 IRQ_TYPE_EDGE_RISING>;
> >> + interrupt-names = "alarm", "period", "carry";
> >> + clocks = <&mstp6_clks R7S72100_CLK_RTC>, <&rtc_x1_clk>,
> >> + <&rtc_x3_clk>, <&extal_clk>;
> >> + clock-names = "fck", "rtc_x1", "rtc_x3", "extal";
> >> + power-domains = <&cpg_clocks>;
> >
> > Not documented.
>
> "power-domains" is a platform property.
>
> All hardware components need power.
> All synchronous hardware components need a clock.
> Most hardware components have a reset signal.
>
> Whether these are exposed and can be controlled depends on the
> platform/SoC.
> So documenting them in each and every device binding looks overkill to me.
> I think this is something to be addressed by devicetree-specification
> (which doesn't handle clocks, power-domains, resets yet).
>
> If you prefer, the property can be removed from the example, though.
I'll go ahead and pull it out (since I have to update the commit title
anyway as per Rob's request)
Besides...it's probably the most least important part of the example ;)
Thanks,
Chris
