linux-kernel - Re: [PATCH net-next v2 1/3] phy: mscc: Use PHY_ID_MATCH

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Date:   Wed, 26 Apr 2023 15:39:58 +0200
From:   Andrew Lunn <andrew@...n.ch>
To:     Harini Katakam <harini.katakam@....com>
Cc:     robh+dt@...nel.org, hkallweit1@...il.com, linux@...linux.org.uk,
        davem@...emloft.net, kuba@...nel.org, edumazet@...gle.com,
        pabeni@...hat.com, vladimir.oltean@....com,
        wsa+renesas@...g-engineering.com,
        krzysztof.kozlowski+dt@...aro.org, simon.horman@...igine.com,
        netdev@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, harinikatakamlinux@...il.com,
        michal.simek@....com, radhey.shyam.pandey@....com
Subject: Re: [PATCH net-next v2 1/3] phy: mscc: Use PHY_ID_MATCH_VENDOR to
 minimize PHY ID table

On Wed, Apr 26, 2023 at 04:13:11PM +0530, Harini Katakam wrote:
> All the PHY devices variants specified have the same mask and
> hence can be simplified to one vendor look up for 0xfffffff0.
> Any individual config can be identified by PHY_ID_MATCH_EXACT
> in the respective structure.
> 
> Signed-off-by: Harini Katakam <harini.katakam@....com>

net-next is closed at the moment, so you will need to report in two
weeks time.

> diff --git a/drivers/net/phy/mscc/mscc_main.c b/drivers/net/phy/mscc/mscc_main.c
> index 62bf99e45af1..75d9582e5784 100644
> --- a/drivers/net/phy/mscc/mscc_main.c
> +++ b/drivers/net/phy/mscc/mscc_main.c
> @@ -2656,19 +2656,7 @@ static struct phy_driver vsc85xx_driver[] = {
>  module_phy_driver(vsc85xx_driver);
>  
>  static struct mdio_device_id __maybe_unused vsc85xx_tbl[] = {
> -	{ PHY_ID_VSC8504, 0xfffffff0, },
> -	{ PHY_ID_VSC8514, 0xfffffff0, },
> -	{ PHY_ID_VSC8530, 0xfffffff0, },
> -	{ PHY_ID_VSC8531, 0xfffffff0, },
> -	{ PHY_ID_VSC8540, 0xfffffff0, },
> -	{ PHY_ID_VSC8541, 0xfffffff0, },
> -	{ PHY_ID_VSC8552, 0xfffffff0, },
> -	{ PHY_ID_VSC856X, 0xfffffff0, },
> -	{ PHY_ID_VSC8572, 0xfffffff0, },
> -	{ PHY_ID_VSC8574, 0xfffffff0, },
> -	{ PHY_ID_VSC8575, 0xfffffff0, },
> -	{ PHY_ID_VSC8582, 0xfffffff0, },
> -	{ PHY_ID_VSC8584, 0xfffffff0, },
> +	{ PHY_ID_MATCH_VENDOR(0xfffffff0) },

The vendor ID is 0xfffffff0 ???

    Andrew