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net: phy: realtek: add get_rate_matching() for rtl822xb PHYs

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Uses vendor register to determine if SerDes is setup in rate-matching mode.

Rate-matching only supported when SerDes is set to 2500base-x.

Signed-off-by: Eric Woudstra <ericwouds@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Eric Woudstra 2024-04-09 09:30:12 +02:00 committed by David S. Miller
parent deb8af5243
commit c189dbd738
1 changed files with 25 additions and 0 deletions
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25
drivers/net/phy/realtek.c
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@ -726,6 +726,27 @@ static int rtl822xb_config_init(struct phy_device *phydev)
return phy_write_mmd(phydev, MDIO_MMD_VEND1, 0x6f11, 0x8020);
}
static int rtl822xb_get_rate_matching(struct phy_device *phydev,
phy_interface_t iface)
{
int val;
/* Only rate matching at 2500base-x */
if (iface != PHY_INTERFACE_MODE_2500BASEX)
return RATE_MATCH_NONE;
val = phy_read_mmd(phydev, MDIO_MMD_VEND1, RTL822X_VND1_SERDES_OPTION);
if (val < 0)
return val;
if ((val & RTL822X_VND1_SERDES_OPTION_MODE_MASK) ==
RTL822X_VND1_SERDES_OPTION_MODE_2500BASEX)
return RATE_MATCH_PAUSE;
/* RTL822X_VND1_SERDES_OPTION_MODE_2500BASEX_SGMII */
return RATE_MATCH_NONE;
}
static int rtl822x_get_features(struct phy_device *phydev)
{
int val;
@ -1091,6 +1112,7 @@ static struct phy_driver realtek_drvs[] = {
.get_features = rtl822x_get_features,
.config_aneg = rtl822x_config_aneg,
.config_init = rtl822xb_config_init,
.get_rate_matching = rtl822xb_get_rate_matching,
.read_status = rtl822xb_read_status,
.suspend = genphy_suspend,
.resume = rtlgen_resume,
@ -1114,6 +1136,7 @@ static struct phy_driver realtek_drvs[] = {
.get_features = rtl822x_get_features,
.config_aneg = rtl822x_config_aneg,
.config_init = rtl822xb_config_init,
.get_rate_matching = rtl822xb_get_rate_matching,
.read_status = rtl822xb_read_status,
.suspend = genphy_suspend,
.resume = rtlgen_resume,
@ -1125,6 +1148,7 @@ static struct phy_driver realtek_drvs[] = {
.get_features = rtl822x_get_features,
.config_aneg = rtl822x_config_aneg,
.config_init = rtl822xb_config_init,
.get_rate_matching = rtl822xb_get_rate_matching,
.read_status = rtl822xb_read_status,
.suspend = genphy_suspend,
.resume = rtlgen_resume,
@ -1136,6 +1160,7 @@ static struct phy_driver realtek_drvs[] = {
.get_features = rtl822x_get_features,
.config_aneg = rtl822x_config_aneg,
.config_init = rtl822xb_config_init,
.get_rate_matching = rtl822xb_get_rate_matching,
.read_status = rtl822xb_read_status,
.suspend = genphy_suspend,
.resume = rtlgen_resume,