linux-kernel - Re: [PATCH 5/5] powerpc: dts: remove label = "cpu" from DSA dt-binding

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Message-ID: <20221207131330.pehewfwmr6pv2sln@skbuf>
Date:   Wed, 7 Dec 2022 15:13:30 +0200
From:   Vladimir Oltean <olteanv@...il.com>
To:     Arınç ÜNAL <arinc.unal@...nc9.com>
Cc:     Pali Rohár <pali@...nel.org>,
        Rob Herring <robh@...nel.org>,
        Michael Ellerman <mpe@...erman.id.au>, netdev@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linuxppc-dev@...ts.ozlabs.org,
        Marek Behún <kabel@...nel.org>,
        Jonas Gorski <jonas.gorski@...il.com>
Subject: Re: [PATCH 5/5] powerpc: dts: remove label = "cpu" from DSA
 dt-binding

On Mon, Dec 05, 2022 at 10:15:16PM +0300, Arınç ÜNAL wrote:
> As Jonas (on CC) pointed out, I only see this being used in the swconfig b53
> driver which uses the label to identify the cpu port.
> 
> https://git.openwrt.org/?p=openwrt/openwrt.git;a=blob;f=target/linux/generic/files/drivers/net/phy/b53/b53_common.c;h=87d731ec3e2a868dc8389f554b1dc9ab42c30be2;hb=HEAD#l1508
> 
> Maybe this got into DSA dt-bindings unchecked before it was decided to move
> forward with DSA instead of swconfig on Linux.

Yes, but swconfig is not DSA and their bindings are not compatible
anyway (swconfig lacks an ethernet = <&phandle> property that would
allow DSA to work). Still waiting for Pali to clarify what he had in mind.