[PATCH] net: phy: micrel: make *-skew-ps check more lenient

From: Matthias Schiffer <matthias.schiffer@ew.tq-group.com>
To: Andrew Lunn <andrew@lunn.ch>,
	Heiner Kallweit <hkallweit1@gmail.com>,
	Russell King <linux@armlinux.org.uk>
Cc: "David S. Miller" <davem@davemloft.net>,
	Jakub Kicinski <kuba@kernel.org>,
	netdev@vger.kernel.org, linux-kernel@vger.kernel.org,
	Matthias Schiffer <matthias.schiffer@ew.tq-group.com>
Subject: [PATCH] net: phy: micrel: make *-skew-ps check more lenient
Date: Tue, 12 Oct 2021 12:34:02 +0200	[thread overview]
Message-ID: <20211012103402.21438-1-matthias.schiffer@ew.tq-group.com> (raw)

It seems reasonable to fine-tune only some of the skew values when using
one of the rgmii-*id PHY modes, and even when all skew values are
specified, using the correct ID PHY mode makes sense for documentation
purposes. Such a configuration also appears in the binding docs in
Documentation/devicetree/bindings/net/micrel-ksz90x1.txt, so the driver
should not warn about it.

Signed-off-by: Matthias Schiffer <matthias.schiffer@ew.tq-group.com>
---
 drivers/net/phy/micrel.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/net/phy/micrel.c b/drivers/net/phy/micrel.c
index c330a5a9f665..03e58ebf68af 100644
--- a/drivers/net/phy/micrel.c
+++ b/drivers/net/phy/micrel.c
@@ -863,9 +863,9 @@ static int ksz9031_config_init(struct phy_device *phydev)
 				MII_KSZ9031RN_TX_DATA_PAD_SKEW, 4,
 				tx_data_skews, 4, &update);
 
-		if (update && phydev->interface != PHY_INTERFACE_MODE_RGMII)
+		if (update && !phy_interface_is_rgmii(phydev))
 			phydev_warn(phydev,
-				    "*-skew-ps values should be used only with phy-mode = \"rgmii\"\n");
+				    "*-skew-ps values should be used only with RGMII PHY modes\n");
 
 		/* Silicon Errata Sheet (DS80000691D or DS80000692D):
 		 * When the device links in the 1000BASE-T slave mode only,
-- 
2.17.1

