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Code Issues Releases Wiki Activity

net: phy: micrel: Remove latency from driver

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Based on the discussions here[1], the PHY driver is the wrong place
to set the latencies, therefore remove them.

[1] https://lkml.org/lkml/2022/3/4/325

Fixes: ece1950283 ("net: phy: micrel: 1588 support for LAN8814 phy")
Signed-off-by: Horatiu Vultur <horatiu.vultur@microchip.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Horatiu Vultur 2022-04-01 13:05:21 +02:00 committed by David S. Miller
parent b117c88df0
commit b814403a8c
1 changed files with 1 additions and 101 deletions
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102
drivers/net/phy/micrel.c
View file

@ -99,15 +99,6 @@
#define PTP_TIMESTAMP_EN_PDREQ_ BIT(2)
#define PTP_TIMESTAMP_EN_PDRES_ BIT(3)
#define PTP_RX_LATENCY_1000 0x0224
#define PTP_TX_LATENCY_1000 0x0225
#define PTP_RX_LATENCY_100 0x0222
#define PTP_TX_LATENCY_100 0x0223
#define PTP_RX_LATENCY_10 0x0220
#define PTP_TX_LATENCY_10 0x0221
#define PTP_TX_PARSE_L2_ADDR_EN 0x0284
#define PTP_RX_PARSE_L2_ADDR_EN 0x0244
@ -268,15 +259,6 @@ struct lan8814_ptp_rx_ts {
u16 seq_id;
};
struct kszphy_latencies {
u16 rx_10;
u16 tx_10;
u16 rx_100;
u16 tx_100;
u16 rx_1000;
u16 tx_1000;
};
struct kszphy_ptp_priv {
struct mii_timestamper mii_ts;
struct phy_device *phydev;
@ -296,7 +278,6 @@ struct kszphy_ptp_priv {
struct kszphy_priv {
struct kszphy_ptp_priv ptp_priv;
struct kszphy_latencies latencies;
const struct kszphy_type *type;
int led_mode;
bool rmii_ref_clk_sel;
@ -304,14 +285,6 @@ struct kszphy_priv {
u64 stats[ARRAY_SIZE(kszphy_hw_stats)];
};
static struct kszphy_latencies lan8814_latencies = {
.rx_10 = 0x22AA,
.tx_10 = 0x2E4A,
.rx_100 = 0x092A,
.tx_100 = 0x02C1,
.rx_1000 = 0x01AD,
.tx_1000 = 0x00C9,
};
static const struct kszphy_type ksz8021_type = {
.led_mode_reg = MII_KSZPHY_CTRL_2,
.has_broadcast_disable = true,
@ -2618,55 +2591,6 @@ static int lan8814_ptp_probe_once(struct phy_device *phydev)
return 0;
}
static int lan8814_read_status(struct phy_device *phydev)
{
struct kszphy_priv *priv = phydev->priv;
struct kszphy_latencies *latencies = &priv->latencies;
int err;
int regval;
err = genphy_read_status(phydev);
if (err)
return err;
switch (phydev->speed) {
case SPEED_1000:
lanphy_write_page_reg(phydev, 5, PTP_RX_LATENCY_1000,
latencies->rx_1000);
lanphy_write_page_reg(phydev, 5, PTP_TX_LATENCY_1000,
latencies->tx_1000);
break;
case SPEED_100:
lanphy_write_page_reg(phydev, 5, PTP_RX_LATENCY_100,
latencies->rx_100);
lanphy_write_page_reg(phydev, 5, PTP_TX_LATENCY_100,
latencies->tx_100);
break;
case SPEED_10:
lanphy_write_page_reg(phydev, 5, PTP_RX_LATENCY_10,
latencies->rx_10);
lanphy_write_page_reg(phydev, 5, PTP_TX_LATENCY_10,
latencies->tx_10);
break;
default:
break;
}
/* Make sure the PHY is not broken. Read idle error count,
* and reset the PHY if it is maxed out.
*/
regval = phy_read(phydev, MII_STAT1000);
if ((regval & 0xFF) == 0xFF) {
phy_init_hw(phydev);
phydev->link = 0;
if (phydev->drv->config_intr && phy_interrupt_is_valid(phydev))
phydev->drv->config_intr(phydev);
return genphy_config_aneg(phydev);
}
return 0;
}
static int lan8814_config_init(struct phy_device *phydev)
{
int val;
@ -2690,27 +2614,6 @@ static int lan8814_config_init(struct phy_device *phydev)
return 0;
}
static void lan8814_parse_latency(struct phy_device *phydev)
{
const struct device_node *np = phydev->mdio.dev.of_node;
struct kszphy_priv *priv = phydev->priv;
struct kszphy_latencies *latency = &priv->latencies;
u32 val;
if (!of_property_read_u32(np, "lan8814,latency_rx_10", &val))
latency->rx_10 = val;
if (!of_property_read_u32(np, "lan8814,latency_tx_10", &val))
latency->tx_10 = val;
if (!of_property_read_u32(np, "lan8814,latency_rx_100", &val))
latency->rx_100 = val;
if (!of_property_read_u32(np, "lan8814,latency_tx_100", &val))
latency->tx_100 = val;
if (!of_property_read_u32(np, "lan8814,latency_rx_1000", &val))
latency->rx_1000 = val;
if (!of_property_read_u32(np, "lan8814,latency_tx_1000", &val))
latency->tx_1000 = val;
}
static int lan8814_probe(struct phy_device *phydev)
{
const struct device_node *np = phydev->mdio.dev.of_node;
@ -2724,8 +2627,6 @@ static int lan8814_probe(struct phy_device *phydev)
priv->led_mode = -1;
priv->latencies = lan8814_latencies;
phydev->priv = priv;
if (!IS_ENABLED(CONFIG_PTP_1588_CLOCK) ||
@ -2746,7 +2647,6 @@ static int lan8814_probe(struct phy_device *phydev)
return err;
}
lan8814_parse_latency(phydev);
lan8814_ptp_init(phydev);
return 0;
@ -2928,7 +2828,7 @@ static struct phy_driver ksphy_driver[] = {
.config_init = lan8814_config_init,
.probe = lan8814_probe,
.soft_reset = genphy_soft_reset,
.read_status = lan8814_read_status,
.read_status = ksz9031_read_status,
.get_sset_count = kszphy_get_sset_count,
.get_strings = kszphy_get_strings,
.get_stats = kszphy_get_stats,