diff options
Diffstat (limited to 'target/linux/generic/backport-6.6/706-v6.6-03-net-phy-at803x-enable-qca8081-slave-seed-conditional.patch')
| -rw-r--r-- | target/linux/generic/backport-6.6/706-v6.6-03-net-phy-at803x-enable-qca8081-slave-seed-conditional.patch | 76 |
1 files changed, 76 insertions, 0 deletions
diff --git a/target/linux/generic/backport-6.6/706-v6.6-03-net-phy-at803x-enable-qca8081-slave-seed-conditional.patch b/target/linux/generic/backport-6.6/706-v6.6-03-net-phy-at803x-enable-qca8081-slave-seed-conditional.patch new file mode 100644 index 0000000000..b91d2cab30 --- /dev/null +++ b/target/linux/generic/backport-6.6/706-v6.6-03-net-phy-at803x-enable-qca8081-slave-seed-conditional.patch @@ -0,0 +1,76 @@ +From 7cc3209558002d95c0d45a1276ba4f5f741eec42 Mon Sep 17 00:00:00 2001 +From: Luo Jie <quic_luoj@quicinc.com> +Date: Sun, 16 Jul 2023 16:49:21 +0800 +Subject: [PATCH 3/6] net: phy: at803x: enable qca8081 slave seed conditionally + +qca8081 is the single port PHY, the slave prefer mode is used +by default. + +if the phy master perfer mode is configured, the slave seed +configuration should not be enabled, since the slave seed +enablement is for making PHY linked as slave mode easily. + +disable slave seed if the master mode is preferred. + +Signed-off-by: Luo Jie <quic_luoj@quicinc.com> +Reviewed-by: Andrew Lunn <andrew@lunn.ch> +Signed-off-by: David S. Miller <davem@davemloft.net> +--- + drivers/net/phy/at803x.c | 25 ++++++++++++++++++++----- + 1 file changed, 20 insertions(+), 5 deletions(-) + +--- a/drivers/net/phy/at803x.c ++++ b/drivers/net/phy/at803x.c +@@ -1745,6 +1745,12 @@ static int qca808x_phy_ms_seed_enable(st + QCA808X_MASTER_SLAVE_SEED_ENABLE); + } + ++static bool qca808x_is_prefer_master(struct phy_device *phydev) ++{ ++ return (phydev->master_slave_get == MASTER_SLAVE_CFG_MASTER_FORCE) || ++ (phydev->master_slave_get == MASTER_SLAVE_CFG_MASTER_PREFERRED); ++} ++ + static int qca808x_config_init(struct phy_device *phydev) + { + int ret; +@@ -1766,11 +1772,17 @@ static int qca808x_config_init(struct ph + if (ret) + return ret; + +- /* Enable seed and configure lower ramdom seed to make phy linked as slave mode */ +- ret = qca808x_phy_ms_seed_enable(phydev, true); +- if (ret) ++ ret = genphy_read_master_slave(phydev); ++ if (ret < 0) + return ret; + ++ if (!qca808x_is_prefer_master(phydev)) { ++ /* Enable seed and configure lower ramdom seed to make phy linked as slave mode */ ++ ret = qca808x_phy_ms_seed_enable(phydev, true); ++ if (ret) ++ return ret; ++ } ++ + /* Configure adc threshold as 100mv for the link 10M */ + return at803x_debug_reg_mask(phydev, QCA808X_PHY_DEBUG_ADC_THRESHOLD, + QCA808X_ADC_THRESHOLD_MASK, QCA808X_ADC_THRESHOLD_100MV); +@@ -1802,13 +1814,16 @@ static int qca808x_read_status(struct ph + phydev->interface = PHY_INTERFACE_MODE_SGMII; + } else { + /* generate seed as a lower random value to make PHY linked as SLAVE easily, +- * except for master/slave configuration fault detected. ++ * except for master/slave configuration fault detected or the master mode ++ * preferred. ++ * + * the reason for not putting this code into the function link_change_notify is + * the corner case where the link partner is also the qca8081 PHY and the seed + * value is configured as the same value, the link can't be up and no link change + * occurs. + */ +- if (phydev->master_slave_state == MASTER_SLAVE_STATE_ERR) { ++ if (phydev->master_slave_state == MASTER_SLAVE_STATE_ERR || ++ qca808x_is_prefer_master(phydev)) { + qca808x_phy_ms_seed_enable(phydev, false); + } else { + qca808x_phy_ms_seed_enable(phydev, true); |