Subject: Re: [RFC next-next v2 5/5] dt-bindings: marvell,prestera: Add address mapping for Prestera Switchdev PCIe driver

From: Andrew Lunn <[email-masked]>
Date: Fri, 1 May 2020 02:01:26 +0200

On Fri, May 01, 2020 at 02:20:52AM +0300, Vadym Kochan wrote:
> Document requirement for the PCI port which is connected to the ASIC, to
> allow access to the firmware related registers.
> 
> Signed-off-by: Vadym Kochan <[email-masked]>
> ---
>  .../devicetree/bindings/net/marvell,prestera.txt    | 13 +++++++++++++
>  1 file changed, 13 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/net/marvell,prestera.txt b/Documentation/devicetree/bindings/net/marvell,prestera.txt
> index 83370ebf5b89..103c35cfa8a7 100644
> --- a/Documentation/devicetree/bindings/net/marvell,prestera.txt
> +++ b/Documentation/devicetree/bindings/net/marvell,prestera.txt
> @@ -45,3 +45,16 @@ dfx-server {
>  	ranges = <0 MBUS_ID(0x08, 0x00) 0 0x100000>;
>  	reg = <MBUS_ID(0x08, 0x00) 0 0x100000>;
>  };
> +
> +Marvell Prestera SwitchDev bindings
> +-----------------------------------
> +The current implementation of Prestera Switchdev PCI interface driver requires
> +that BAR2 is assigned to 0xf6000000 as base address from the PCI IO range:
> +
> +&cp0_pcie0 {
> +	ranges = <0x81000000 0x0 0xfb000000 0x0 0xfb000000 0x0 0xf0000
> +		0x82000000 0x0 0xf6000000 0x0 0xf6000000 0x0 0x2000000
> +		0x82000000 0x0 0xf9000000 0x0 0xf9000000 0x0 0x100000>;
> +	phys = <&cp0_comphy0 0>;
> +	status = "okay";

The base MAC address should be here as well. As was said for v1,
module parameters are bad.

       Andrew