asf66 发布的帖子

我对icplus的修改（内核版本6.12.0）：

diff --git a/drivers/net/phy/icplus.c b/drivers/net/phy/icplus.c
index a00a667454a9..411ca8fbb30e 100644
--- a/drivers/net/phy/icplus.c
+++ b/drivers/net/phy/icplus.c
@@ -21,6 +21,7 @@
 #include <linux/ethtool.h>
 #include <linux/phy.h>
 #include <linux/property.h>
+#include <linux/clk.h>
 
 #include <asm/io.h>
 #include <asm/irq.h>
@@ -89,6 +90,7 @@ static struct ip101g_hw_stat ip101g_hw_stats[] = {
 struct ip101a_g_phy_priv {
 	enum ip101gr_sel_intr32 sel_intr32;
 	u64 stats[ARRAY_SIZE(ip101g_hw_stats)];
+	struct clk *clk;
 };
 
 static int ip175c_config_init(struct phy_device *phydev)
@@ -210,6 +212,11 @@ static int ip101a_g_probe(struct phy_device *phydev)
 	if (!priv)
 		return -ENOMEM;
 
+	priv->clk = devm_clk_get_optional_enabled(dev, NULL);
+	if (IS_ERR(priv->clk))
+		return dev_err_probe(dev, PTR_ERR(priv->clk),
+				     "failed to get phy clock\n");
+
 	/* Both functions (RX error and interrupt status) are sharing the same
 	 * pin on the 32-pin IP101GR, so this is an exclusive choice.
 	 */
@@ -571,6 +578,33 @@ static void ip101g_get_stats(struct phy_device *phydev,
 		data[i] = ip101g_get_stat(phydev, i);
 }
 
+static int ip101a_g_suspend(struct phy_device *phydev)
+{
+	struct ip101a_g_phy_priv *priv = phydev->priv;
+	int ret = 0;
+
+	if (!phydev->wol_enabled) {
+		ret = genphy_suspend(phydev);
+
+		if (ret)
+			return ret;
+
+		clk_disable_unprepare(priv->clk);
+	}
+
+	return ret;
+}
+
+static int ip101a_g_resume(struct phy_device *phydev)
+{
+	struct ip101a_g_phy_priv *priv = phydev->priv;
+
+	if (!phydev->wol_enabled)
++		clk_prepare_enable(priv->clk);
+
+	return genphy_resume(phydev);
+}
+
 static struct phy_driver icplus_driver[] = {
 {
 	PHY_ID_MATCH_MODEL(IP175C_PHY_ID),
@@ -601,8 +635,9 @@ static struct phy_driver icplus_driver[] = {
 	.config_aneg	= ip101a_g_config_aneg,
 	.read_status	= ip101a_g_read_status,
 	.soft_reset	= genphy_soft_reset,
-	.suspend	= genphy_suspend,
-	.resume		= genphy_resume,
+	.suspend	= ip101a_g_suspend,
+	.resume		= ip101a_g_resume,
+	.flags		= PHY_ALWAYS_CALL_SUSPEND,
 }, {
 	.name		= "ICPlus IP101G",
 	.match_phy_device = ip101g_match_phy_device,
@@ -618,8 +653,9 @@ static struct phy_driver icplus_driver[] = {
 	.get_sset_count = ip101g_get_sset_count,
 	.get_strings	= ip101g_get_strings,
 	.get_stats	= ip101g_get_stats,
-	.suspend	= genphy_suspend,
-	.resume		= genphy_resume,
+	.suspend	= ip101a_g_suspend,
+	.resume		= ip101a_g_resume,
+	.flags		= PHY_ALWAYS_CALL_SUSPEND,
 } };
 
 module_phy_driver(icplus_driver);

&emac {
	pinctrl-names = "default";
	pinctrl-0 = <&rmii_pg_pins>;
	phy-mode = "rmii";
	phy-handle = <&phy1>;
	phy-supply = <&reg_vcc3v3>;
	status = "okay";
};

&mdio {
	status = "okay";

	phy1: ethernet-phy@1 {
		compatible = "ethernet-phy-ieee802.3-c22";
		reg = <1>;
		reset-gpios = <&pio 6 6 GPIO_ACTIVE_LOW>; /* PG6 */
		reset-assert-us = <5000>;
		reset-deassert-us = <5000>;
		clocks = <&ccu CLK_EMAC_25M>;
	};
};

参照这个补丁修改对应的phy驱动：
https://lore.kernel.org/netdev/20230605154010.49611-2-detlev.casanova@collabora.com/T/#u
然后在设备树phy节点添加 clocks = <&ccu CLK_EMAC_25M>;