netdev - [PATCH net-next] net: phy: realtek: enable ALDPS to save power for RTL8211F

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Date:   Fri, 18 Sep 2020 10:47:56 +0800
From:   Jisheng Zhang <Jisheng.Zhang@...aptics.com>
To:     Andrew Lunn <andrew@...n.ch>,
        Heiner Kallweit <hkallweit1@...il.com>,
        Russell King <linux@...linux.org.uk>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH net-next] net: phy: realtek: enable ALDPS to save power for
 RTL8211F

Enable ALDPS function to save power when link down.

Signed-off-by: Jisheng Zhang <Jisheng.Zhang@...aptics.com>
---
 drivers/net/phy/realtek.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/drivers/net/phy/realtek.c b/drivers/net/phy/realtek.c
index 95dbe5e8e1d8..961570186822 100644
--- a/drivers/net/phy/realtek.c
+++ b/drivers/net/phy/realtek.c
@@ -39,6 +39,10 @@
 #define RTL8201F_ISR				0x1e
 #define RTL8201F_IER				0x13
 
+#define RTL8211F_ALDPS_PLL_OFF			BIT(1)
+#define RTL8211F_ALDPS_ENABLE			BIT(2)
+#define RTL8211F_ALDPS_XTAL_OFF			BIT(12)
+
 #define RTL8366RB_POWER_SAVE			0x15
 #define RTL8366RB_POWER_SAVE_ON			BIT(12)
 
@@ -178,8 +182,12 @@ static int rtl8211f_config_init(struct phy_device *phydev)
 {
 	struct device *dev = &phydev->mdio.dev;
 	u16 val_txdly, val_rxdly;
+	u16 val;
 	int ret;
 
+	val = RTL8211F_ALDPS_ENABLE | RTL8211F_ALDPS_PLL_OFF | RTL8211F_ALDPS_XTAL_OFF;
+	phy_modify_paged_changed(phydev, 0xa43, 0x18, val, val);
+
 	switch (phydev->interface) {
 	case PHY_INTERFACE_MODE_RGMII:
 		val_txdly = 0;
-- 
2.28.0