Subject: [PATCH 3/3] ARM: bcm2835: Add the necessary firmware driver information to the DT

From: [email-masked] (Stephen Warren)
Date: Tue, 28 Apr 2015 19:44:39 -0600

On 04/27/2015 05:14 PM, Eric Anholt wrote:
> This gets the USB power domain turned on so that DWC2 can probe, even
> if the bootloader didn't turn it on for us (which is the case if you
> use the RPi firmware without chainloading U-Boot).

> diff --git a/arch/arm/boot/dts/bcm2835-rpi.dtsi b/arch/arm/boot/dts/bcm2835-rpi.dtsi

> +&usb {
> +	power-domains = <&firmware POWER_DOMAIN_USB>;
> +};

That property doesn't seem to be documented in
Documentation/devicetree/bindings/usb/dwc2.txt (which defines compatible
= "brcm,bcm2835-usb"). Is it implemented?