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92 lines
2.4 KiB
Diff
92 lines
2.4 KiB
Diff
From 9155098547fb1172d4fa536f3f6bc9d42f59d08c Mon Sep 17 00:00:00 2001
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From: Daniel Golle <daniel@makrotopia.org>
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Date: Sat, 22 Apr 2023 03:26:01 +0100
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Subject: [PATCH] net: phy: realtek: setup ALDPS on RTL822x
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Setup Link Down Power Saving Mode according the DTS property
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just like for RTL821x 1GE PHYs.
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Signed-off-by: Daniel Golle <daniel@makrotopia.org>
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---
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drivers/net/phy/realtek/realtek_main.c | 11 +++++++++++
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1 file changed, 11 insertions(+)
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--- a/drivers/net/phy/realtek/realtek_main.c
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+++ b/drivers/net/phy/realtek/realtek_main.c
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@@ -129,6 +129,10 @@
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*/
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#define RTL822X_VND2_C22_REG(reg) (0xa400 + 2 * (reg))
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+#define RTL8221B_PHYCR1 0xa430
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+#define RTL8221B_PHYCR1_ALDPS_EN BIT(2)
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+#define RTL8221B_PHYCR1_ALDPS_XTAL_OFF_EN BIT(12)
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+
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#define RTL8366RB_POWER_SAVE 0x15
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#define RTL8366RB_POWER_SAVE_ON BIT(12)
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@@ -175,6 +179,10 @@ struct rtl821x_priv {
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u32 saved_wolopts;
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};
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+struct rtl822x_priv {
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+ bool enable_aldps;
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+};
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+
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static int rtl821x_read_page(struct phy_device *phydev)
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{
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return __phy_read(phydev, RTL821x_PAGE_SELECT);
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@@ -1025,6 +1033,18 @@ static int rtl822x_write_mmd(struct phy_
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static int rtl822x_probe(struct phy_device *phydev)
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{
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+ struct device *dev = &phydev->mdio.dev;
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+ struct rtl822x_priv *priv;
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+
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+ priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
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+ if (!priv)
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+ return -ENOMEM;
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+
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+ priv->enable_aldps = of_property_read_bool(dev->of_node,
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+ "realtek,aldps-enable");
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+
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+ phydev->priv = priv;
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+
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if (IS_ENABLED(CONFIG_REALTEK_PHY_HWMON) &&
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phydev->phy_id != RTL_GENERIC_PHYID)
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return rtl822x_hwmon_init(phydev);
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@@ -1032,6 +1052,19 @@ static int rtl822x_probe(struct phy_devi
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return 0;
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}
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+static int rtl822x_init_phycr1(struct phy_device *phydev, bool no_aldps)
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+{
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+ struct rtl822x_priv *priv = phydev->priv;
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+ u16 val = 0;
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+
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+ if (priv->enable_aldps && !no_aldps)
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+ val = RTL8221B_PHYCR1_ALDPS_EN | RTL8221B_PHYCR1_ALDPS_XTAL_OFF_EN;
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+
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+ return phy_modify_mmd_changed(phydev, MDIO_MMD_VEND2, RTL8221B_PHYCR1,
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+ RTL8221B_PHYCR1_ALDPS_EN |
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+ RTL8221B_PHYCR1_ALDPS_XTAL_OFF_EN, val);
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+}
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+
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static int rtl822xb_config_init(struct phy_device *phydev)
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{
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bool has_2500, has_sgmii;
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@@ -1108,6 +1141,14 @@ static int rtl822xb_config_init(struct p
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if (ret < 0)
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return ret;
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+ ret = phy_write_mmd(phydev, MDIO_MMD_VEND1, 0x6f11, 0x8020);
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+ if (ret < 0)
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+ return ret;
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+
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+ ret = rtl822x_init_phycr1(phydev, false);
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+ if (ret < 0)
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+ return ret;
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+
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return 0;
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}
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