linux-kernel - Re: [net-next PATCH v2 13/15] dt-bindings: net: dsa: qca8k: document open drain binding

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Date:   Sat, 9 Oct 2021 19:20:49 +0200
From:   Andrew Lunn <andrew@...n.ch>
To:     Ansuel Smith <ansuelsmth@...il.com>
Cc:     Vivien Didelot <vivien.didelot@...il.com>,
        Florian Fainelli <f.fainelli@...il.com>,
        Vladimir Oltean <olteanv@...il.com>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Heiner Kallweit <hkallweit1@...il.com>,
        Russell King <linux@...linux.org.uk>, netdev@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [net-next PATCH v2 13/15] dt-bindings: net: dsa: qca8k: document
 open drain binding

On Fri, Oct 08, 2021 at 02:22:23AM +0200, Ansuel Smith wrote:
> Document new binding qca,power_on_sel used to enable Power-on-strapping
> select reg and qca,led_open_drain to set led to open drain mode.
> 
> Signed-off-by: Ansuel Smith <ansuelsmth@...il.com>
> ---
>  Documentation/devicetree/bindings/net/dsa/qca8k.txt | 11 +++++++++++
>  1 file changed, 11 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/net/dsa/qca8k.txt b/Documentation/devicetree/bindings/net/dsa/qca8k.txt
> index b9cccb657373..9fb4db65907e 100644
> --- a/Documentation/devicetree/bindings/net/dsa/qca8k.txt
> +++ b/Documentation/devicetree/bindings/net/dsa/qca8k.txt
> @@ -13,6 +13,17 @@ Required properties:
>  Optional properties:
>  
>  - reset-gpios: GPIO to be used to reset the whole device
> +- qca,ignore-power-on-sel: Ignore power on pin strapping to configure led open
> +                           drain or eeprom presence.

So strapping is only used for LEDs and EEPROM presence? Nothing else?
Seems link MAC0/MAC6 swap would be a good candidate for strapping?

I just want to make it clear that if you select this option, you need
to take care of X, Y and Z in DT.

	Andrew