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Date:   Wed, 9 Dec 2020 17:09:27 +0100
From:   Andrew Lunn <andrew@...n.ch>
To:     Wong Vee Khee <vee.khee.wong@...el.com>
Cc:     Giuseppe Cavallaro <peppe.cavallaro@...com>,
        Alexandre Torgue <alexandre.torgue@...com>,
        Jose Abreu <joabreu@...opsys.com>,
        "David S . Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Maxime Coquelin <mcoquelin.stm32@...il.com>,
        Voon Wei Feng <weifeng.voon@...el.com>,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        Ong Boon Leong <boon.leong.ong@...el.com>,
        linux-stm32@...md-mailman.stormreply.com,
        linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH net-next 1/1] net: stmmac: allow stmmac to probe for C45
 PHY devices

On Wed, Dec 09, 2020 at 07:19:33PM +0800, Wong Vee Khee wrote:
> Assign stmmac's mdio_bus probe capabilities to MDIOBUS_C22_C45.
> This extends the probing of C45 PHY devices on the MDIO bus.
> 
> Signed-off-by: Wong Vee Khee <vee.khee.wong@...el.com>
> ---
>  drivers/net/ethernet/stmicro/stmmac/stmmac_mdio.c | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_mdio.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_mdio.c
> index b2a707e2ef43..9f96bb7d27db 100644
> --- a/drivers/net/ethernet/stmicro/stmmac/stmmac_mdio.c
> +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_mdio.c
> @@ -364,6 +364,7 @@ int stmmac_mdio_register(struct net_device *ndev)
>  		memcpy(new_bus->irq, mdio_bus_data->irqs, sizeof(new_bus->irq));
>  
>  	new_bus->name = "stmmac";
> +	new_bus->probe_capabilities = MDIOBUS_C22_C45;

It looks like this needs to be conditional on the version. xgmax2
supports C45. And gmac4. But other versions don't.

	 Andrew

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