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