From 66e22932eb795f12cc78c7592581673049d85a8c Mon Sep 17 00:00:00 2001
From: Jisheng Zhang <Jisheng.Zhang@synaptics.com>
Date: Mon, 21 Sep 2020 09:13:54 +0800
Subject: [PATCH] net: phy: realtek: enable ALDPS to save power for RTL8211F
Enable ALDPS(Advanced Link Down Power Saving) to save power when
link down.
Signed-off-by: Jisheng Zhang <Jisheng.Zhang@synaptics.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
drivers/net/phy/realtek.c | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/drivers/net/phy/realtek.c b/drivers/net/phy/realtek.c
index 95dbe5e8e1d8ff..4bf54cded48ab4 100644
--- a/drivers/net/phy/realtek.c
+++ b/drivers/net/phy/realtek.c
@@ -27,11 +27,16 @@
#define RTL821x_EXT_PAGE_SELECT 0x1e
#define RTL821x_PAGE_SELECT 0x1f
+#define RTL8211F_PHYCR1 0x18
#define RTL8211F_INSR 0x1d
#define RTL8211F_TX_DELAY BIT(8)
#define RTL8211F_RX_DELAY BIT(3)
+#define RTL8211F_ALDPS_PLL_OFF BIT(1)
+#define RTL8211F_ALDPS_ENABLE BIT(2)
+#define RTL8211F_ALDPS_XTAL_OFF BIT(12)
+
#define RTL8211E_TX_DELAY BIT(1)
#define RTL8211E_RX_DELAY BIT(2)
#define RTL8211E_MODE_MII_GMII BIT(3)
@@ -178,8 +183,12 @@ 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, RTL8211F_PHYCR1, val, val);
+
switch (phydev->interface) {
case PHY_INTERFACE_MODE_RGMII:
val_txdly = 0;
--
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