linux-kernel - Re: [”PATCH” 3/5] dt-bindings: pci: add system controller and MAC reset bit to Armada 7K/8K controller bindings

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Date:   Tue, 13 Apr 2021 10:10:13 -0500
From:   Rob Herring <robh@...nel.org>
To:     bpeled@...vell.com
Cc:     thomas.petazzoni@...tlin.com, lorenzo.pieralisi@....com,
        bhelgaas@...gle.com, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, devicetree@...r.kernel.org,
        linux-pci@...r.kernel.org, sebastian.hesselbarth@...il.com,
        gregory.clement@...tlin.com, andrew@...n.ch, mw@...ihalf.com,
        jaz@...ihalf.com, kostap@...vell.com, nadavh@...vell.com,
        stefanc@...vell.com, oferh@...vell.com
Subject: Re: [”PATCH” 3/5] dt-bindings: pci: add system controller and MAC
 reset bit to Armada 7K/8K controller bindings

On Mon, Apr 12, 2021 at 06:30:54PM +0300, bpeled@...vell.com wrote:
> From: Ben Peled <bpeled@...vell.com>
> 
> Adding optional system-controller and mac-reset-bit-mask
> needed for linkdown procedure.
> 
> Signed-off-by: Ben Peled <bpeled@...vell.com>
> ---
>  Documentation/devicetree/bindings/pci/pci-armada8k.txt | 6 ++++++
>  1 file changed, 6 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/pci/pci-armada8k.txt b/Documentation/devicetree/bindings/pci/pci-armada8k.txt
> index 7a813d0..2696e79 100644
> --- a/Documentation/devicetree/bindings/pci/pci-armada8k.txt
> +++ b/Documentation/devicetree/bindings/pci/pci-armada8k.txt
> @@ -24,6 +24,10 @@ Optional properties:
>  - phy-names: names of the PHYs corresponding to the number of lanes.
>  	Must be "cp0-pcie0-x4-lane0-phy", "cp0-pcie0-x4-lane1-phy" for
>  	2 PHYs.
> +- marvell,system-controller: address of system controller needed
> +	in order to reset MAC used by link-down handle
> +- marvell,mac-reset-bit-mask: MAC reset bit of system controller
> +	needed in order to reset MAC used by link-down handle

Seems like this should use the reset controller binding instead.

If not, this can be a single property with a phandle plus arg.

Rob