netdev - Re: [PATCH 04/10] ARM: dts: BCM5301X: Add a default compatible for switch node

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Date:   Wed, 11 Nov 2020 00:06:47 +0200
From:   Vladimir Oltean <olteanv@...il.com>
To:     Florian Fainelli <f.fainelli@...il.com>
Cc:     netdev@...r.kernel.org, Andrew Lunn <andrew@...n.ch>,
        Vivien Didelot <vivien.didelot@...il.com>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Rob Herring <robh+dt@...nel.org>, Ray Jui <rjui@...adcom.com>,
        Scott Branden <sbranden@...adcom.com>,
        "maintainer:BROADCOM IPROC ARM ARCHITECTURE" 
        <bcm-kernel-feedback-list@...adcom.com>,
        Hauke Mehrtens <hauke@...ke-m.de>,
        Rafał Miłecki <zajec5@...il.com>,
        "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" 
        <devicetree@...r.kernel.org>,
        open list <linux-kernel@...r.kernel.org>,
        "moderated list:BROADCOM IPROC ARM ARCHITECTURE" 
        <linux-arm-kernel@...ts.infradead.org>,
        Kurt Kanzenbach <kurt@...-computers.de>
Subject: Re: [PATCH 04/10] ARM: dts: BCM5301X: Add a default compatible for
 switch node

On Mon, Nov 09, 2020 at 07:31:07PM -0800, Florian Fainelli wrote:
> Provide a default compatible string which is based on the 53010 SRAB
> compatible, this allows us to have sane defaults and silences the
> following warnings:
> 
> arch/arm/boot/dts/bcm4708-asus-rt-ac56u.dt.yaml:
> ethernet-switch@...07000: compatible: 'oneOf' conditional failed, one
> must be fixed:
>         ['brcm,bcm5301x-srab'] is too short
>         'brcm,bcm5325' was expected
>         'brcm,bcm53115' was expected
>         'brcm,bcm53125' was expected
>         'brcm,bcm53128' was expected
>         'brcm,bcm5365' was expected
>         'brcm,bcm5395' was expected
>         'brcm,bcm5389' was expected
>         'brcm,bcm5397' was expected
>         'brcm,bcm5398' was expected
>         'brcm,bcm11360-srab' was expected
>         'brcm,bcm5301x-srab' is not one of ['brcm,bcm53010-srab',
> 'brcm,bcm53011-srab', 'brcm,bcm53012-srab', 'brcm,bcm53018-srab',
> 'brcm,bcm53019-srab']
>         'brcm,bcm5301x-srab' is not one of ['brcm,bcm11404-srab',
> 'brcm,bcm11407-srab', 'brcm,bcm11409-srab', 'brcm,bcm58310-srab',
> 'brcm,bcm58311-srab', 'brcm,bcm58313-srab']
>         'brcm,bcm5301x-srab' is not one of ['brcm,bcm58522-srab',
> 'brcm,bcm58523-srab', 'brcm,bcm58525-srab', 'brcm,bcm58622-srab',
> 'brcm,bcm58623-srab', 'brcm,bcm58625-srab', 'brcm,bcm88312-srab']
>         'brcm,bcm5301x-srab' is not one of ['brcm,bcm3384-switch',
> 'brcm,bcm6328-switch', 'brcm,bcm6368-switch']
>         From schema:
> Documentation/devicetree/bindings/net/dsa/b53.yaml
> 
> Signed-off-by: Florian Fainelli <f.fainelli@...il.com>
> ---

Nice, I didn't know DSA supported the switch inside this device. In the
default AsusWRT, the switch is well hidden from the kernel :)

Not that it makes any difference as far as I can see, but how do you
know this a BCM53010 SRAB specifically?

>  arch/arm/boot/dts/bcm5301x.dtsi | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/arch/arm/boot/dts/bcm5301x.dtsi b/arch/arm/boot/dts/bcm5301x.dtsi
> index ee23c0841699..807580dd89f5 100644
> --- a/arch/arm/boot/dts/bcm5301x.dtsi
> +++ b/arch/arm/boot/dts/bcm5301x.dtsi
> @@ -483,7 +483,7 @@ thermal: thermal@...0c2c0 {
>  	};
>  
>  	srab: ethernet-switch@...07000 {
> -		compatible = "brcm,bcm5301x-srab";
> +		compatible = "brcm,bcm53010-srab", "brcm,bcm5301x-srab";
>  		reg = <0x18007000 0x1000>;
>  
>  		status = "disabled";
> -- 
> 2.25.1
>