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Date: Tue, 27 Feb 2024 11:01:16 +0000
From: "Russell King (Oracle)" <linux@armlinux.org.uk>
To: Bastien Curutchet <bastien.curutchet@bootlin.com>
Cc: "David S. Miller" <davem@davemloft.net>,
	Eric Dumazet <edumazet@google.com>,
	Jakub Kicinski <kuba@kernel.org>, Paolo Abeni <pabeni@redhat.com>,
	Rob Herring <robh+dt@kernel.org>,
	Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
	Conor Dooley <conor+dt@kernel.org>, Pavel Machek <pavel@ucw.cz>,
	Lee Jones <lee@kernel.org>,
	Richard Cochran <richardcochran@gmail.com>,
	Andrew Lunn <andrew@lunn.ch>,
	Heiner Kallweit <hkallweit1@gmail.com>,
	linux-kernel@vger.kernel.org, netdev@vger.kernel.org,
	devicetree@vger.kernel.org, linux-leds@vger.kernel.org,
	Thomas Petazzoni <thomas.petazzoni@bootlin.com>,
	herve.codina@bootlin.com, maxime.chevallier@bootlin.com,
	christophercordahi@nanometrics.ca
Subject: Re: [PATCH v2 6/6] net: phy: DP83640: Add fiber mode
 enabling/disabling from device tree
Message-ID: <Zd3A/OzmfLRWDtjg@shell.armlinux.org.uk>
References: <20240227093945.21525-1-bastien.curutchet@bootlin.com>
 <20240227093945.21525-7-bastien.curutchet@bootlin.com>
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In-Reply-To: <20240227093945.21525-7-bastien.curutchet@bootlin.com>
Sender: Russell King (Oracle) <linux@armlinux.org.uk>

On Tue, Feb 27, 2024 at 10:39:45AM +0100, Bastien Curutchet wrote:
> @@ -1141,6 +1147,17 @@ static int dp83640_config_init(struct phy_device *phydev)
>  	val = phy_read(phydev, PCFCR) & ~PCF_EN;
>  	phy_write(phydev, PCFCR, val);
>  
> +	if (dp83640->fiber != FIBER_MODE_DEFAULT) {
> +		val = phy_read(phydev, PCSR) & ~FX_EN;
> +		if (dp83640->fiber == FIBER_MODE_ENABLE)
> +			val |= FX_EN;
> +		phy_write(phydev, PCSR, val);

		val = 0;
		if (dp83640->fiber == FIBER_MODE_ENABLE)
			val = FX_EN;

		phy_modify(phydev, PCSR, FX_EN, val);

> +
> +		/* Write SOFT_RESET bit to ensure configuration */
> +		val = phy_read(phydev, PHYCR2) | SOFT_RESET;
> +		phy_write(phydev, PHYCR2, val);

		phy_set_bits(phydev, PHYCR2, SOFT_RESET);

..
> +#else
> +static int dp83640_of_init(struct phy_device *phydev)
> +{
> +	dp83640->fiber = FIBER_MODE_DEFAULT;

This hasn't been build tested - dp83640 won't exist here.

-- 
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