On Mon, Mar 5, 2018 at 2:28 PM, Eric Anholt <eric@xxxxxxxxxx> wrote:
> The VCHI communication channel can be provided by BCM283x and Capri
VCHI or VCHIQ?
> SoCs, to communicate with the VPU-side OS services.
>
> Signed-off-by: Eric Anholt <eric@xxxxxxxxxx>
> ---
> .../devicetree/bindings/soc/bcm/brcm,bcm2835-vchiq.txt | 18 ++++++++++++++++++
> 1 file changed, 18 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/soc/bcm/brcm,bcm2835-vchiq.txt
>
> diff --git a/Documentation/devicetree/bindings/soc/bcm/brcm,bcm2835-vchiq.txt b/Documentation/devicetree/bindings/soc/bcm/brcm,bcm2835-vchiq.txt
> new file mode 100644
> index 000000000000..4055a8977f3e
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/soc/bcm/brcm,bcm2835-vchiq.txt
> @@ -0,0 +1,18 @@
> +Broadcom VCHIQ firmware services
> +
> +Required properties:
> +
> +- compatible: Should be "brcm,bcm2835-vchiq"
> +- reg: Physical base address and length of the doorbell register pair
> +- interrupts: The interrupt number
> + See bindings/interrupt-controller/brcm,bcm2835-armctrl-ic.txt
> +- firmware: Reference to the RPi firmware device node
There's only one, just get it by compatible or path.
> +
> +Example:
> +
> +vchi@7e00b840 {
> + compatible = "brcm,bcm2835-vchiq";
> + reg = <0x7e00b840 0xf>;
> + interrupts = <0 2>;
> + firmware = <&firmware>;
> +};
> --
> 2.16.2
>
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