[PATCH net-next 4/4] checkpatch: check for comment explaining rgmii(|-rxid|-txid) PHY modes

[Joe Perches]

On 2025-04-15 03:18, Matthias Schiffer wrote:
> Historially, the RGMII PHY modes specified in Device Trees have been
> used inconsistently, often referring to the usage of delays on the PHY
> side rather than describing the board; many drivers still implement 
> this
> incorrectly.
> 
> Require a comment in Devices Trees using these modes (usually 
> mentioning
> that the delay is relalized

realized

> diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
> index 784912f570e9d..57fcbd4b63ede 100755
> --- a/scripts/checkpatch.pl
> +++ b/scripts/checkpatch.pl
> @@ -3735,6 +3735,17 @@ sub process {
>  			}
>  		}
> 
> +# Check for RGMII phy-mode with delay on PCB
> +		if ($realfile =~ /\.dtsi?$/ && $line =~ 
> /^\+\s*(phy-mode|phy-connection-type)\s*=\s*"/ &&
> +		    !ctx_has_comment($first_line, $linenr)) {

Not sure where $first_line comes from and unsure if this works on 
patches rather than complete files.

Does it?