linux-kernel - Re: [PATCH net-next v4 4/5] stmmac: intel: add phy-mode and fixed-link ACPI

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Message-ID: <YqjaMbUERWuBL9FJ@lunn.ch>
Date:   Tue, 14 Jun 2022 20:57:53 +0200
From:   Andrew Lunn <andrew@...n.ch>
To:     Ong Boon Leong <boon.leong.ong@...el.com>
Cc:     Alexandre Torgue <alexandre.torgue@...s.st.com>,
        Jose Abreu <Jose.Abreu@...opsys.com>,
        Heiner Kallweit <hkallweit1@...il.com>,
        Russell King <linux@...linux.org.uk>,
        Paolo Abeni <pabeni@...hat.com>,
        "David S . Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Vladimir Oltean <olteanv@...il.com>,
        Vivien Didelot <vivien.didelot@...il.com>,
        Florian Fainelli <f.fainelli@...il.com>,
        Maxime Coquelin <mcoquelin.stm32@...il.com>,
        Giuseppe Cavallaro <peppe.cavallaro@...com>,
        netdev@...r.kernel.org, linux-stm32@...md-mailman.stormreply.com,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Emilio Riva <emilio.riva@...csson.com>
Subject: Re: [PATCH net-next v4 4/5] stmmac: intel: add phy-mode and
 fixed-link ACPI _DSD setting support

> +	/* For fixed-link setup, we allow phy-mode setting */
> +	fwnode = dev_fwnode(&pdev->dev);
> +	if (fwnode) {
> +		const char *phy_mode;
> +
> +		if (!fwnode_property_read_string(fwnode, "phy-mode",
> +						 &phy_mode)) {
> +			if (!strcmp(phy_mode, "sgmii"))
> +				plat->phy_interface = PHY_INTERFACE_MODE_SGMII;
> +			if (!strcmp(phy_mode, "1000base-x"))
> +				plat->phy_interface = PHY_INTERFACE_MODE_1000BASEX;
> +		}

fwnode_get_phy_mode() and then validate the value afterwards.

      Andrew