linux-kernel - [PATCH v2 2/7] ARM: imx6q: remove TX clock delay of ar8031_phy

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Message-Id: <20210309112615.625-3-o.rempel@pengutronix.de>
Date:   Tue,  9 Mar 2021 12:26:10 +0100
From:   Oleksij Rempel <o.rempel@...gutronix.de>
To:     Shawn Guo <shawnguo@...nel.org>,
        Sascha Hauer <s.hauer@...gutronix.de>,
        Andrew Lunn <andrew@...n.ch>,
        Florian Fainelli <f.fainelli@...il.com>,
        Heiner Kallweit <hkallweit1@...il.com>
Cc:     Oleksij Rempel <o.rempel@...gutronix.de>, kernel@...gutronix.de,
        netdev@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org, linux-imx@....com,
        Fabio Estevam <festevam@...il.com>,
        David Jander <david@...tonic.nl>,
        Russell King <linux@...linux.org.uk>,
        Philippe Schenker <philippe.schenker@...adex.com>
Subject: [PATCH v2 2/7] ARM: imx6q: remove TX clock delay of ar8031_phy_fixup()

In case the at803x PHY driver is activated in the kernel, the TX clock
fixup is overwritten by at803x_config_init(), in this case no additional
device tree changes are needed.

If this patch breaks your system, please enable AT803X_PHY driver and
add the following device tree property to the PHY node:

    phy-mode = "rgmii-txid";

Signed-off-by: Oleksij Rempel <o.rempel@...gutronix.de>
---
 arch/arm/mach-imx/mach-imx6q.c | 6 ------
 1 file changed, 6 deletions(-)

diff --git a/arch/arm/mach-imx/mach-imx6q.c b/arch/arm/mach-imx/mach-imx6q.c
index 78205f90da27..1abefe7e1c3a 100644
--- a/arch/arm/mach-imx/mach-imx6q.c
+++ b/arch/arm/mach-imx/mach-imx6q.c
@@ -82,12 +82,6 @@ static int ar8031_phy_fixup(struct phy_device *dev)
 	val |= 0x18;
 	phy_write(dev, 0xe, val);
 
-	/* introduce tx clock delay */
-	phy_write(dev, 0x1d, 0x5);
-	val = phy_read(dev, 0x1e);
-	val |= 0x0100;
-	phy_write(dev, 0x1e, val);
-
 	return 0;
 }
 
-- 
2.29.2