From 8ac6c7a54ed1b98d142dce24b11c6de6a1e239a5 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Tue, 22 Oct 2024 10:36:11 +0000
Subject: [PATCH] 修改4g拨号为QMI,需要在系统里后台执行quectel-CM

---
 kernel/drivers/net/phy/marvell10g.c |    7 +++++++
 1 files changed, 7 insertions(+), 0 deletions(-)

diff --git a/kernel/drivers/net/phy/marvell10g.c b/kernel/drivers/net/phy/marvell10g.c
index 2b64318..42b48d0 100644
--- a/kernel/drivers/net/phy/marvell10g.c
+++ b/kernel/drivers/net/phy/marvell10g.c
@@ -263,6 +263,13 @@
 	ret = phy_clear_bits_mmd(phydev, MDIO_MMD_VEND2, MV_V2_PORT_CTRL,
 				 MV_V2_PORT_CTRL_PWRDOWN);
 
+	/* Sometimes, the power down bit doesn't clear immediately, and
+	 * a read of this register causes the bit not to clear. Delay
+	 * 100us to allow the PHY to come out of power down mode before
+	 * the next access.
+	 */
+	udelay(100);
+
 	if (phydev->drv->phy_id != MARVELL_PHY_ID_88X3310 ||
 	    priv->firmware_ver < 0x00030000)
 		return ret;

--
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