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

[Lee Jones]

On Mon, 27 Apr 2015, 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).
> 
> Signed-off-by: Eric Anholt <eric at anholt.net>
> ---
>  arch/arm/boot/dts/bcm2835-rpi.dtsi | 13 +++++++++++++
>  arch/arm/boot/dts/bcm2835.dtsi     |  2 +-
>  2 files changed, 14 insertions(+), 1 deletion(-)

Acked-by: Lee Jones <lee at kernel.org>

> diff --git a/arch/arm/boot/dts/bcm2835-rpi.dtsi b/arch/arm/boot/dts/bcm2835-rpi.dtsi
> index 46780bb..fa9afd1 100644
> --- a/arch/arm/boot/dts/bcm2835-rpi.dtsi
> +++ b/arch/arm/boot/dts/bcm2835-rpi.dtsi
> @@ -1,3 +1,4 @@
> +#include <dt-bindings/arm/raspberrypi-firmware-power.h>
>  #include "bcm2835.dtsi"
>  
>  / {
> @@ -14,6 +15,14 @@
>  			linux,default-trigger = "heartbeat";
>  		};
>  	};
> +
> +	soc {
> +		firmware: firmware {
> +			compatible = "raspberrypi,firmware";
> +			mboxes = <&mailbox 0>;
> +			#power-domain-cells = <1>;
> +		};
> +	};
>  };
>  
>  &gpio {
> @@ -49,3 +58,7 @@
>  	status = "okay";
>  	bus-width = <4>;
>  };
> +
> +&usb {
> +	power-domains = <&firmware POWER_DOMAIN_USB>;
> +};
> diff --git a/arch/arm/boot/dts/bcm2835.dtsi b/arch/arm/boot/dts/bcm2835.dtsi
> index 664aa25..5734650 100644
> --- a/arch/arm/boot/dts/bcm2835.dtsi
> +++ b/arch/arm/boot/dts/bcm2835.dtsi
> @@ -148,7 +148,7 @@
>  			status = "disabled";
>  		};
>  
> -		usb at 7e980000 {
> +		usb: usb at 7e980000 {
>  			compatible = "brcm,bcm2835-usb";
>  			reg = <0x7e980000 0x10000>;
>  			interrupts = <1 9>;