[PATCH net-next 8/8] net: phy: realtek: setup ALDPS on RTL8221B

Daniel Golle
2023-05-10T23:02:35Z

Setup Link Down Power Saving Mode according the DTS property
just like for RTL821x 1GE PHYs.

Signed-off-by: Daniel Golle <daniel@makrotopia.org>
---
drivers/net/phy/realtek.c | 29 +++++++++++++++++++++++++++++
1 file changed, 29 insertions(+)

diff --git a/drivers/net/phy/realtek.c b/drivers/net/phy/realtek.c
index 29168f98f451..b5d7208004d8 100644
--- a/drivers/net/phy/realtek.c
+++ b/drivers/net/phy/realtek.c
@@ -62,6 +62,10 @@
#define RTL8221B_SERDES_OPTION_MODE_2500BASEX 2
#define RTL8221B_SERDES_OPTION_MODE_HISGMII 3

+#define RTL8221B_PHYCR1 0xa430
+#define RTL8221B_PHYCR1_ALDPS_EN BIT(2)
+#define RTL8221B_PHYCR1_ALDPS_XTAL_OFF_EN BIT(12)
+
#define RTL8366RB_POWER_SAVE 0x15
#define RTL8366RB_POWER_SAVE_ON BIT(12)

@@ -757,6 +761,25 @@ static int rtl8226_match_phy_device(struct phy_device *phydev)
rtlgen_supports_2_5gbps(phydev);
}

+static int rtl822x_probe(struct phy_device *phydev)
+{
+ struct device *dev = &phydev->mdio.dev;
+ int val;
+
+ val = phy_read_mmd(phydev, RTL8221B_MMD_SERDES_CTRL, RTL8221B_PHYCR1);
+ if (val < 0)
+ return val;
+
+ if (of_property_read_bool(dev->of_node, "realtek,aldps-enable"))
+ val |= RTL8221B_PHYCR1_ALDPS_EN | RTL8221B_PHYCR1_ALDPS_XTAL_OFF_EN;
+ else
+ val &= ~(RTL8221B_PHYCR1_ALDPS_EN | RTL8221B_PHYCR1_ALDPS_XTAL_OFF_EN);
+
+ phy_write_mmd(phydev, RTL8221B_MMD_SERDES_CTRL, RTL8221B_PHYCR1, val);
+
+ return 0;
+}
+
static int rtlgen_resume(struct phy_device *phydev)
{
int ret = genphy_resume(phydev);
@@ -1034,6 +1057,7 @@ static struct phy_driver realtek_drvs[] = {
.match_phy_device = rtl8226_match_phy_device,
.get_features = rtl822x_get_features,
.config_aneg = rtl822x_config_aneg,
+ .probe = rtl822x_probe,
.read_status = rtl822x_read_status,
.suspend = genphy_suspend,
.resume = rtlgen_resume,
@@ -1048,6 +1072,7 @@ static struct phy_driver realtek_drvs[] = {
.get_features = rtl822x_get_features,
.config_aneg = rtl822x_config_aneg,
.config_init = rtl8221b_config_init,
+ .probe = rtl822x_probe,
.read_status = rtl822x_read_status,
.suspend = genphy_suspend,
.resume = rtlgen_resume,
@@ -1061,6 +1086,7 @@ static struct phy_driver realtek_drvs[] = {
.name = "RTL8226-CG 2.5Gbps PHY",
.get_features = rtl822x_get_features,
.config_aneg = rtl822x_config_aneg,
+ .probe = rtl822x_probe,
.read_status = rtl822x_read_status,
.suspend = genphy_suspend,
.resume = rtlgen_resume,
@@ -1073,6 +1099,7 @@ static struct phy_driver realtek_drvs[] = {
.get_features = rtl822x_get_features,
.config_aneg = rtl822x_config_aneg,
.config_init = rtl8221b_config_init,
+ .probe = rtl822x_probe,
.read_status = rtl822x_read_status,
.suspend = genphy_suspend,
.resume = rtlgen_resume,
@@ -1085,6 +1112,7 @@ static struct phy_driver realtek_drvs[] = {
.get_features = rtl822x_get_features,
.config_aneg = rtl822x_config_aneg,
.config_init = rtl8221b_config_init,
+ .probe = rtl822x_probe,
.read_status = rtl822x_read_status,
.suspend = genphy_suspend,
.resume = rtlgen_resume,
@@ -1097,6 +1125,7 @@ static struct phy_driver realtek_drvs[] = {
.get_features = rtl822x_get_features,
.config_aneg = rtl822x_config_aneg,
.config_init = rtl8221b_config_init,
+ .probe = rtl822x_probe,
.read_status = rtl822x_read_status,
.suspend = genphy_suspend,
.resume = rtlgen_resume,
--
2.40.0