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path: root/drivers/net/phy/nxp-c45-tja11xx.c
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Diffstat (limited to 'drivers/net/phy/nxp-c45-tja11xx.c')
-rw-r--r--drivers/net/phy/nxp-c45-tja11xx.c113
1 files changed, 106 insertions, 7 deletions
diff --git a/drivers/net/phy/nxp-c45-tja11xx.c b/drivers/net/phy/nxp-c45-tja11xx.c
index 3cf614b4cd52..e9fc54517449 100644
--- a/drivers/net/phy/nxp-c45-tja11xx.c
+++ b/drivers/net/phy/nxp-c45-tja11xx.c
@@ -10,6 +10,7 @@
#include <linux/kernel.h>
#include <linux/mii.h>
#include <linux/module.h>
+#include <linux/of.h>
#include <linux/phy.h>
#include <linux/processor.h>
#include <linux/property.h>
@@ -21,6 +22,11 @@
#define PHY_ID_TJA_1103 0x001BB010
#define PHY_ID_TJA_1120 0x001BB031
+#define VEND1_DEVICE_ID3 0x0004
+#define TJA1120_DEV_ID3_SILICON_VERSION GENMASK(15, 12)
+#define TJA1120_DEV_ID3_SAMPLE_TYPE GENMASK(11, 8)
+#define DEVICE_ID3_SAMPLE_TYPE_R 0x9
+
#define VEND1_DEVICE_CONTROL 0x0040
#define DEVICE_CONTROL_RESET BIT(15)
#define DEVICE_CONTROL_CONFIG_GLOBAL_EN BIT(14)
@@ -108,6 +114,9 @@
#define MII_BASIC_CONFIG_RMII 0x5
#define MII_BASIC_CONFIG_MII 0x4
+#define VEND1_SGMII_BASIC_CONTROL 0xB000
+#define SGMII_LPM BIT(11)
+
#define VEND1_SYMBOL_ERROR_CNT_XTD 0x8351
#define EXTENDED_CNT_EN BIT(15)
#define VEND1_MONITOR_STATUS 0xAC80
@@ -185,6 +194,8 @@
#define NXP_C45_SKB_CB(skb) ((struct nxp_c45_skb_cb *)(skb)->cb)
+#define TJA11XX_REVERSE_MODE BIT(0)
+
struct nxp_c45_phy;
struct nxp_c45_skb_cb {
@@ -1058,7 +1069,7 @@ nxp_c45_no_ptp_irq:
}
static int nxp_c45_ts_info(struct mii_timestamper *mii_ts,
- struct ethtool_ts_info *ts_info)
+ struct kernel_ethtool_ts_info *ts_info)
{
struct nxp_c45_phy *priv = container_of(mii_ts, struct nxp_c45_phy,
mii_ts);
@@ -1137,13 +1148,11 @@ static void nxp_c45_get_strings(struct phy_device *phydev, u8 *data)
for (i = 0; i < count; i++) {
if (i < ARRAY_SIZE(common_hw_stats)) {
- strscpy(data + i * ETH_GSTRING_LEN,
- common_hw_stats[i].name, ETH_GSTRING_LEN);
+ ethtool_puts(&data, common_hw_stats[i].name);
continue;
}
idx = i - ARRAY_SIZE(common_hw_stats);
- strscpy(data + i * ETH_GSTRING_LEN,
- phy_data->stats[idx].name, ETH_GSTRING_LEN);
+ ethtool_puts(&data, phy_data->stats[idx].name);
}
}
@@ -1296,6 +1305,8 @@ static int nxp_c45_soft_reset(struct phy_device *phydev)
if (ret)
return ret;
+ usleep_range(2000, 2050);
+
return phy_read_mmd_poll_timeout(phydev, MDIO_MMD_VEND1,
VEND1_DEVICE_CONTROL, ret,
!(ret & DEVICE_CONTROL_RESET), 20000,
@@ -1510,6 +1521,8 @@ static int nxp_c45_get_delays(struct phy_device *phydev)
static int nxp_c45_set_phy_mode(struct phy_device *phydev)
{
+ struct nxp_c45_phy *priv = phydev->priv;
+ u16 basic_config;
int ret;
ret = phy_read_mmd(phydev, MDIO_MMD_VEND1, VEND1_ABILITIES);
@@ -1561,8 +1574,15 @@ static int nxp_c45_set_phy_mode(struct phy_device *phydev)
phydev_err(phydev, "rmii mode not supported\n");
return -EINVAL;
}
+
+ basic_config = MII_BASIC_CONFIG_RMII;
+
+ /* This is not PHY_INTERFACE_MODE_REVRMII */
+ if (priv->flags & TJA11XX_REVERSE_MODE)
+ basic_config |= MII_BASIC_CONFIG_REV;
+
phy_write_mmd(phydev, MDIO_MMD_VEND1, VEND1_MII_BASIC_CONFIG,
- MII_BASIC_CONFIG_RMII);
+ basic_config);
break;
case PHY_INTERFACE_MODE_SGMII:
if (!(ret & SGMII_ABILITY)) {
@@ -1581,6 +1601,63 @@ static int nxp_c45_set_phy_mode(struct phy_device *phydev)
return 0;
}
+/* Errata: ES_TJA1120 and ES_TJA1121 Rev. 1.0 — 28 November 2024 Section 3.1 & 3.2 */
+static void nxp_c45_tja1120_errata(struct phy_device *phydev)
+{
+ bool macsec_ability, sgmii_ability;
+ int silicon_version, sample_type;
+ int phy_abilities;
+ int ret = 0;
+
+ ret = phy_read_mmd(phydev, MDIO_MMD_VEND1, VEND1_DEVICE_ID3);
+ if (ret < 0)
+ return;
+
+ sample_type = FIELD_GET(TJA1120_DEV_ID3_SAMPLE_TYPE, ret);
+ if (sample_type != DEVICE_ID3_SAMPLE_TYPE_R)
+ return;
+
+ silicon_version = FIELD_GET(TJA1120_DEV_ID3_SILICON_VERSION, ret);
+
+ phy_abilities = phy_read_mmd(phydev, MDIO_MMD_VEND1,
+ VEND1_PORT_ABILITIES);
+ macsec_ability = !!(phy_abilities & MACSEC_ABILITY);
+ sgmii_ability = !!(phy_abilities & SGMII_ABILITY);
+ if ((!macsec_ability && silicon_version == 2) ||
+ (macsec_ability && silicon_version == 1)) {
+ /* TJA1120/TJA1121 PHY configuration errata workaround.
+ * Apply PHY writes sequence before link up.
+ */
+ if (!macsec_ability) {
+ phy_write_mmd(phydev, MDIO_MMD_VEND1, 0x01F8, 0x4b95);
+ phy_write_mmd(phydev, MDIO_MMD_VEND1, 0x01F9, 0xf3cd);
+ } else {
+ phy_write_mmd(phydev, MDIO_MMD_VEND1, 0x01F8, 0x89c7);
+ phy_write_mmd(phydev, MDIO_MMD_VEND1, 0x01F9, 0x0893);
+ }
+
+ phy_write_mmd(phydev, MDIO_MMD_VEND1, 0x0476, 0x58a0);
+
+ phy_write_mmd(phydev, MDIO_MMD_PMAPMD, 0x8921, 0xa3a);
+ phy_write_mmd(phydev, MDIO_MMD_PMAPMD, 0x89F1, 0x16c1);
+
+ phy_write_mmd(phydev, MDIO_MMD_VEND1, 0x01F8, 0x0);
+ phy_write_mmd(phydev, MDIO_MMD_VEND1, 0x01F9, 0x0);
+
+ if (sgmii_ability) {
+ /* TJA1120B/TJA1121B SGMII PCS restart errata workaround.
+ * Put SGMII PCS into power down mode and back up.
+ */
+ phy_set_bits_mmd(phydev, MDIO_MMD_VEND1,
+ VEND1_SGMII_BASIC_CONTROL,
+ SGMII_LPM);
+ phy_clear_bits_mmd(phydev, MDIO_MMD_VEND1,
+ VEND1_SGMII_BASIC_CONTROL,
+ SGMII_LPM);
+ }
+ }
+}
+
static int nxp_c45_config_init(struct phy_device *phydev)
{
int ret;
@@ -1597,6 +1674,9 @@ static int nxp_c45_config_init(struct phy_device *phydev)
phy_write_mmd(phydev, MDIO_MMD_VEND1, 0x01F8, 1);
phy_write_mmd(phydev, MDIO_MMD_VEND1, 0x01F9, 2);
+ if (phy_id_compare(phydev->phy_id, PHY_ID_TJA_1120, GENMASK(31, 4)))
+ nxp_c45_tja1120_errata(phydev);
+
phy_set_bits_mmd(phydev, MDIO_MMD_VEND1, VEND1_PHY_CONFIG,
PHY_CONFIG_AUTO);
@@ -1623,6 +1703,20 @@ static int nxp_c45_get_features(struct phy_device *phydev)
return genphy_c45_pma_read_abilities(phydev);
}
+static int nxp_c45_parse_dt(struct phy_device *phydev)
+{
+ struct device_node *node = phydev->mdio.dev.of_node;
+ struct nxp_c45_phy *priv = phydev->priv;
+
+ if (!IS_ENABLED(CONFIG_OF_MDIO))
+ return 0;
+
+ if (of_property_read_bool(node, "nxp,rmii-refclk-out"))
+ priv->flags |= TJA11XX_REVERSE_MODE;
+
+ return 0;
+}
+
static int nxp_c45_probe(struct phy_device *phydev)
{
struct nxp_c45_phy *priv;
@@ -1642,6 +1736,8 @@ static int nxp_c45_probe(struct phy_device *phydev)
phydev->priv = priv;
+ nxp_c45_parse_dt(phydev);
+
mutex_init(&priv->ptp_lock);
phy_abilities = phy_read_mmd(phydev, MDIO_MMD_VEND1,
@@ -1660,6 +1756,9 @@ static int nxp_c45_probe(struct phy_device *phydev)
priv->mii_ts.ts_info = nxp_c45_ts_info;
phydev->mii_ts = &priv->mii_ts;
ret = nxp_c45_init_ptp_clock(priv);
+
+ /* Timestamp selected by default to keep legacy API */
+ phydev->default_timestamp = true;
} else {
phydev_dbg(phydev, "PTP support not enabled even if the phy supports it");
}
@@ -1979,7 +2078,7 @@ static struct phy_driver nxp_c45_driver[] = {
module_phy_driver(nxp_c45_driver);
-static struct mdio_device_id __maybe_unused nxp_c45_tbl[] = {
+static const struct mdio_device_id __maybe_unused nxp_c45_tbl[] = {
{ PHY_ID_MATCH_MODEL(PHY_ID_TJA_1103) },
{ PHY_ID_MATCH_MODEL(PHY_ID_TJA_1120) },
{ /*sentinel*/ },
generated by cgit (git 2.34.1) at 2025-07-23 18:47:04 +0000