diff options
| author | Luo Jie <luoj@codeaurora.org> | 2021-10-24 16:27:36 +0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2021-10-25 14:04:18 +0100 |
| commit | 9d4dae29624f1b9467f58d596174803cde9be7a1 (patch) | |
| tree | 9aee0c08638e3cdb563d05d8b5be1de57318bdd7 /drivers/net/phy/at803x.c | |
| parent | 2acdd43fe009a99817c2324b086f32403f9faecd (diff) | |
| download | linux-9d4dae29624f1b9467f58d596174803cde9be7a1.tar.bz2 | |
net: phy: add qca8081 soft_reset and enable master/slave seed
qca8081 phy is a single port phy, configure
phy the lower seed value to make it linked as slave
mode easier.
Signed-off-by: Luo Jie <luoj@codeaurora.org>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/phy/at803x.c')
| -rw-r--r-- | drivers/net/phy/at803x.c | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/drivers/net/phy/at803x.c b/drivers/net/phy/at803x.c index da710523b7c4..1418db4f2091 100644 --- a/drivers/net/phy/at803x.c +++ b/drivers/net/phy/at803x.c @@ -223,6 +223,12 @@ #define QCA808X_PHY_MMD3_DEBUG_6 0xa011 #define QCA808X_MMD3_DEBUG_6_VALUE 0x5f85 +/* master/slave seed config */ +#define QCA808X_PHY_DEBUG_LOCAL_SEED 9 +#define QCA808X_MASTER_SLAVE_SEED_ENABLE BIT(1) +#define QCA808X_MASTER_SLAVE_SEED_CFG GENMASK(12, 2) +#define QCA808X_MASTER_SLAVE_SEED_RANGE 0x32 + MODULE_DESCRIPTION("Qualcomm Atheros AR803x and QCA808X PHY driver"); MODULE_AUTHOR("Matus Ujhelyi"); MODULE_LICENSE("GPL"); @@ -1569,6 +1575,26 @@ static int qca808x_phy_fast_retrain_config(struct phy_device *phydev) return 0; } +static int qca808x_phy_ms_random_seed_set(struct phy_device *phydev) +{ + u16 seed_value = (prandom_u32() % QCA808X_MASTER_SLAVE_SEED_RANGE); + + return at803x_debug_reg_mask(phydev, QCA808X_PHY_DEBUG_LOCAL_SEED, + QCA808X_MASTER_SLAVE_SEED_CFG, + FIELD_PREP(QCA808X_MASTER_SLAVE_SEED_CFG, seed_value)); +} + +static int qca808x_phy_ms_seed_enable(struct phy_device *phydev, bool enable) +{ + u16 seed_enable = 0; + + if (enable) + seed_enable = QCA808X_MASTER_SLAVE_SEED_ENABLE; + + return at803x_debug_reg_mask(phydev, QCA808X_PHY_DEBUG_LOCAL_SEED, + QCA808X_MASTER_SLAVE_SEED_ENABLE, seed_enable); +} + static int qca808x_config_init(struct phy_device *phydev) { int ret; @@ -1590,6 +1616,16 @@ static int qca808x_config_init(struct phy_device *phydev) if (ret) return ret; + /* Configure lower ramdom seed to make phy linked as slave mode */ + ret = qca808x_phy_ms_random_seed_set(phydev); + if (ret) + return ret; + + /* Enable seed */ + 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); @@ -1622,6 +1658,17 @@ static int qca808x_read_status(struct phy_device *phydev) return 0; } +static int qca808x_soft_reset(struct phy_device *phydev) +{ + int ret; + + ret = genphy_soft_reset(phydev); + if (ret < 0) + return ret; + + return qca808x_phy_ms_seed_enable(phydev, true); +} + static struct phy_driver at803x_driver[] = { { /* Qualcomm Atheros AR8035 */ @@ -1797,6 +1844,7 @@ static struct phy_driver at803x_driver[] = { .resume = genphy_resume, .read_status = qca808x_read_status, .config_init = qca808x_config_init, + .soft_reset = qca808x_soft_reset, }, }; module_phy_driver(at803x_driver); |