1 files changed, 667 insertions, 49 deletions

diff --git a/drivers/net/phy/micrel.c b/drivers/net/phy/micrel.c
index ddb50a0e2b..0803b6e83c 100644
--- a/drivers/net/phy/micrel.c
+++ b/drivers/net/phy/micrel.c
@@ -167,6 +167,9 @@
 #define PTP_CMD_CTL_PTP_LTC_STEP_SEC_		BIT(5)
 #define PTP_CMD_CTL_PTP_LTC_STEP_NSEC_		BIT(6)
 
+#define PTP_COMMON_INT_ENA			0x0204
+#define PTP_COMMON_INT_ENA_GPIO_CAP_EN		BIT(2)
+
 #define PTP_CLOCK_SET_SEC_HI			0x0205
 #define PTP_CLOCK_SET_SEC_MID			0x0206
 #define PTP_CLOCK_SET_SEC_LO			0x0207
@@ -179,6 +182,27 @@
 #define PTP_CLOCK_READ_NS_HI			0x022C
 #define PTP_CLOCK_READ_NS_LO			0x022D
 
+#define PTP_GPIO_SEL				0x0230
+#define PTP_GPIO_SEL_GPIO_SEL(pin)		((pin) << 8)
+#define PTP_GPIO_CAP_MAP_LO			0x0232
+
+#define PTP_GPIO_CAP_EN				0x0233
+#define PTP_GPIO_CAP_EN_GPIO_RE_CAPTURE_ENABLE(gpio)	BIT(gpio)
+#define PTP_GPIO_CAP_EN_GPIO_FE_CAPTURE_ENABLE(gpio)	(BIT(gpio) << 8)
+
+#define PTP_GPIO_RE_LTC_SEC_HI_CAP		0x0235
+#define PTP_GPIO_RE_LTC_SEC_LO_CAP		0x0236
+#define PTP_GPIO_RE_LTC_NS_HI_CAP		0x0237
+#define PTP_GPIO_RE_LTC_NS_LO_CAP		0x0238
+#define PTP_GPIO_FE_LTC_SEC_HI_CAP		0x0239
+#define PTP_GPIO_FE_LTC_SEC_LO_CAP		0x023A
+#define PTP_GPIO_FE_LTC_NS_HI_CAP		0x023B
+#define PTP_GPIO_FE_LTC_NS_LO_CAP		0x023C
+
+#define PTP_GPIO_CAP_STS			0x023D
+#define PTP_GPIO_CAP_STS_PTP_GPIO_RE_STS(gpio)	BIT(gpio)
+#define PTP_GPIO_CAP_STS_PTP_GPIO_FE_STS(gpio)	(BIT(gpio) << 8)
+
 #define PTP_OPERATING_MODE			0x0241
 #define PTP_OPERATING_MODE_STANDALONE_		BIT(0)
 
@@ -272,6 +296,67 @@
 #define PS_TO_REG				200
 #define FIFO_SIZE				8
 
+#define LAN8814_PTP_GPIO_NUM			24
+#define LAN8814_PTP_PEROUT_NUM			2
+#define LAN8814_PTP_EXTTS_NUM			3
+
+#define LAN8814_BUFFER_TIME			2
+
+#define LAN8841_PTP_GENERAL_CONFIG_LTC_EVENT_200MS	13
+#define LAN8841_PTP_GENERAL_CONFIG_LTC_EVENT_100MS	12
+#define LAN8841_PTP_GENERAL_CONFIG_LTC_EVENT_50MS	11
+#define LAN8841_PTP_GENERAL_CONFIG_LTC_EVENT_10MS	10
+#define LAN8841_PTP_GENERAL_CONFIG_LTC_EVENT_5MS	9
+#define LAN8841_PTP_GENERAL_CONFIG_LTC_EVENT_1MS	8
+#define LAN8841_PTP_GENERAL_CONFIG_LTC_EVENT_500US	7
+#define LAN8841_PTP_GENERAL_CONFIG_LTC_EVENT_100US	6
+#define LAN8841_PTP_GENERAL_CONFIG_LTC_EVENT_50US	5
+#define LAN8841_PTP_GENERAL_CONFIG_LTC_EVENT_10US	4
+#define LAN8841_PTP_GENERAL_CONFIG_LTC_EVENT_5US	3
+#define LAN8841_PTP_GENERAL_CONFIG_LTC_EVENT_1US	2
+#define LAN8841_PTP_GENERAL_CONFIG_LTC_EVENT_500NS	1
+#define LAN8841_PTP_GENERAL_CONFIG_LTC_EVENT_100NS	0
+
+#define LAN8814_GPIO_EN1			0x20
+#define LAN8814_GPIO_EN2			0x21
+#define LAN8814_GPIO_DIR1			0x22
+#define LAN8814_GPIO_DIR2			0x23
+#define LAN8814_GPIO_BUF1			0x24
+#define LAN8814_GPIO_BUF2			0x25
+
+#define LAN8814_GPIO_EN_ADDR(pin) \
+	((pin) > 15 ? LAN8814_GPIO_EN1 : LAN8814_GPIO_EN2)
+#define LAN8814_GPIO_EN_BIT(pin)		BIT(pin)
+#define LAN8814_GPIO_DIR_ADDR(pin) \
+	((pin) > 15 ? LAN8814_GPIO_DIR1 : LAN8814_GPIO_DIR2)
+#define LAN8814_GPIO_DIR_BIT(pin)		BIT(pin)
+#define LAN8814_GPIO_BUF_ADDR(pin) \
+	((pin) > 15 ? LAN8814_GPIO_BUF1 : LAN8814_GPIO_BUF2)
+#define LAN8814_GPIO_BUF_BIT(pin)		BIT(pin)
+
+#define LAN8814_EVENT_A				0
+#define LAN8814_EVENT_B				1
+
+#define LAN8814_PTP_GENERAL_CONFIG		0x0201
+#define LAN8814_PTP_GENERAL_CONFIG_LTC_EVENT_MASK(event) \
+	((event) ? GENMASK(11, 8) : GENMASK(7, 4))
+#define LAN8814_PTP_GENERAL_CONFIG_LTC_EVENT_SET(event, value) \
+	(((value) & GENMASK(3, 0)) << (4 + ((event) << 2)))
+#define LAN8814_PTP_GENERAL_CONFIG_RELOAD_ADD_X(event) \
+	((event) ? BIT(2) : BIT(0))
+#define LAN8814_PTP_GENERAL_CONFIG_POLARITY_X(event) \
+	((event) ? BIT(3) : BIT(1))
+
+#define LAN8814_PTP_CLOCK_TARGET_SEC_HI(event)	((event) ? 0x21F : 0x215)
+#define LAN8814_PTP_CLOCK_TARGET_SEC_LO(event)	((event) ? 0x220 : 0x216)
+#define LAN8814_PTP_CLOCK_TARGET_NS_HI(event)	((event) ? 0x221 : 0x217)
+#define LAN8814_PTP_CLOCK_TARGET_NS_LO(event)	((event) ? 0x222 : 0x218)
+
+#define LAN8814_PTP_CLOCK_TARGET_RELOAD_SEC_HI(event)	((event) ? 0x223 : 0x219)
+#define LAN8814_PTP_CLOCK_TARGET_RELOAD_SEC_LO(event)	((event) ? 0x224 : 0x21A)
+#define LAN8814_PTP_CLOCK_TARGET_RELOAD_NS_HI(event)	((event) ? 0x225 : 0x21B)
+#define LAN8814_PTP_CLOCK_TARGET_RELOAD_NS_LO(event)	((event) ? 0x226 : 0x21C)
+
 /* Delay used to get the second part from the LTC */
 #define LAN8841_GET_SEC_LTC_DELAY		(500 * NSEC_PER_MSEC)
 
@@ -304,13 +389,9 @@ struct lan8814_shared_priv {
 	struct phy_device *phydev;
 	struct ptp_clock *ptp_clock;
 	struct ptp_clock_info ptp_clock_info;
+	struct ptp_pin_desc *pin_config;
 
-	/* Reference counter to how many ports in the package are enabling the
-	 * timestamping
-	 */
-	u8 ref;
-
-	/* Lock for ptp_clock and ref */
+	/* Lock for ptp_clock */
 	struct mutex shared_lock;
 };
 
@@ -785,6 +866,17 @@ static int ksz8061_config_init(struct phy_device *phydev)
 {
 	int ret;
 
+	/* Chip can be powered down by the bootstrap code. */
+	ret = phy_read(phydev, MII_BMCR);
+	if (ret < 0)
+		return ret;
+	if (ret & BMCR_PDOWN) {
+		ret = phy_write(phydev, MII_BMCR, ret & ~BMCR_PDOWN);
+		if (ret < 0)
+			return ret;
+		usleep_range(1000, 2000);
+	}
+
 	ret = phy_write_mmd(phydev, MDIO_MMD_PMAPMD, MDIO_DEVID1, 0xB61A);
 	if (ret)
 		return ret;
@@ -1297,6 +1389,8 @@ static int ksz9131_config_init(struct phy_device *phydev)
 	const struct device *dev_walker;
 	int ret;
 
+	phydev->mdix_ctrl = ETH_TP_MDI_AUTO;
+
 	dev_walker = &phydev->mdio.dev;
 	do {
 		of_node = dev_walker->of_node;
@@ -1346,28 +1440,30 @@ static int ksz9131_config_init(struct phy_device *phydev)
 #define MII_KSZ9131_AUTO_MDIX		0x1C
 #define MII_KSZ9131_AUTO_MDI_SET	BIT(7)
 #define MII_KSZ9131_AUTO_MDIX_SWAP_OFF	BIT(6)
+#define MII_KSZ9131_DIG_AXAN_STS	0x14
+#define MII_KSZ9131_DIG_AXAN_STS_LINK_DET	BIT(14)
+#define MII_KSZ9131_DIG_AXAN_STS_A_SELECT	BIT(12)
 
 static int ksz9131_mdix_update(struct phy_device *phydev)
 {
 	int ret;
 
-	ret = phy_read(phydev, MII_KSZ9131_AUTO_MDIX);
-	if (ret < 0)
-		return ret;
-
-	if (ret & MII_KSZ9131_AUTO_MDIX_SWAP_OFF) {
-		if (ret & MII_KSZ9131_AUTO_MDI_SET)
-			phydev->mdix_ctrl = ETH_TP_MDI;
-		else
-			phydev->mdix_ctrl = ETH_TP_MDI_X;
+	if (phydev->mdix_ctrl != ETH_TP_MDI_AUTO) {
+		phydev->mdix = phydev->mdix_ctrl;
 	} else {
-		phydev->mdix_ctrl = ETH_TP_MDI_AUTO;
-	}
+		ret = phy_read(phydev, MII_KSZ9131_DIG_AXAN_STS);
+		if (ret < 0)
+			return ret;
 
-	if (ret & MII_KSZ9131_AUTO_MDI_SET)
-		phydev->mdix = ETH_TP_MDI;
-	else
-		phydev->mdix = ETH_TP_MDI_X;
+		if (ret & MII_KSZ9131_DIG_AXAN_STS_LINK_DET) {
+			if (ret & MII_KSZ9131_DIG_AXAN_STS_A_SELECT)
+				phydev->mdix = ETH_TP_MDI;
+			else
+				phydev->mdix = ETH_TP_MDI_X;
+		} else {
+			phydev->mdix = ETH_TP_MDI_INVALID;
+		}
+	}
 
 	return 0;
 }
@@ -1858,7 +1954,7 @@ static const struct ksz9477_errata_write ksz9477_errata_writes[] = {
 	{0x1c, 0x20, 0xeeee},
 };
 
-static int ksz9477_config_init(struct phy_device *phydev)
+static int ksz9477_phy_errata(struct phy_device *phydev)
 {
 	int err;
 	int i;
@@ -1886,16 +1982,30 @@ static int ksz9477_config_init(struct phy_device *phydev)
 			return err;
 	}
 
+	err = genphy_restart_aneg(phydev);
+	if (err)
+		return err;
+
+	return err;
+}
+
+static int ksz9477_config_init(struct phy_device *phydev)
+{
+	int err;
+
+	/* Only KSZ9897 family of switches needs this fix. */
+	if ((phydev->phy_id & 0xf) == 1) {
+		err = ksz9477_phy_errata(phydev);
+		if (err)
+			return err;
+	}
+
 	/* According to KSZ9477 Errata DS80000754C (Module 4) all EEE modes
 	 * in this switch shall be regarded as broken.
 	 */
 	if (phydev->dev_flags & MICREL_NO_EEE)
 		phydev->eee_broken_modes = -1;
 
-	err = genphy_restart_aneg(phydev);
-	if (err)
-		return err;
-
 	return kszphy_config_init(phydev);
 }
 
@@ -2004,6 +2114,71 @@ static int kszphy_resume(struct phy_device *phydev)
 	return 0;
 }
 
+static int ksz9477_resume(struct phy_device *phydev)
+{
+	int ret;
+
+	/* No need to initialize registers if not powered down. */
+	ret = phy_read(phydev, MII_BMCR);
+	if (ret < 0)
+		return ret;
+	if (!(ret & BMCR_PDOWN))
+		return 0;
+
+	genphy_resume(phydev);
+
+	/* After switching from power-down to normal mode, an internal global
+	 * reset is automatically generated. Wait a minimum of 1 ms before
+	 * read/write access to the PHY registers.
+	 */
+	usleep_range(1000, 2000);
+
+	/* Only KSZ9897 family of switches needs this fix. */
+	if ((phydev->phy_id & 0xf) == 1) {
+		ret = ksz9477_phy_errata(phydev);
+		if (ret)
+			return ret;
+	}
+
+	/* Enable PHY Interrupts */
+	if (phy_interrupt_is_valid(phydev)) {
+		phydev->interrupts = PHY_INTERRUPT_ENABLED;
+		if (phydev->drv->config_intr)
+			phydev->drv->config_intr(phydev);
+	}
+
+	return 0;
+}
+
+static int ksz8061_resume(struct phy_device *phydev)
+{
+	int ret;
+
+	/* This function can be called twice when the Ethernet device is on. */
+	ret = phy_read(phydev, MII_BMCR);
+	if (ret < 0)
+		return ret;
+	if (!(ret & BMCR_PDOWN))
+		return 0;
+
+	genphy_resume(phydev);
+	usleep_range(1000, 2000);
+
+	/* Re-program the value after chip is reset. */
+	ret = phy_write_mmd(phydev, MDIO_MMD_PMAPMD, MDIO_DEVID1, 0xB61A);
+	if (ret)
+		return ret;
+
+	/* Enable PHY Interrupts */
+	if (phy_interrupt_is_valid(phydev)) {
+		phydev->interrupts = PHY_INTERRUPT_ENABLED;
+		if (phydev->drv->config_intr)
+			phydev->drv->config_intr(phydev);
+	}
+
+	return 0;
+}
+
 static int kszphy_probe(struct phy_device *phydev)
 {
 	const struct kszphy_type *type = phydev->drv->driver_data;
@@ -2426,8 +2601,6 @@ static int lan8814_hwtstamp(struct mii_timestamper *mii_ts,
 {
 	struct kszphy_ptp_priv *ptp_priv =
 			  container_of(mii_ts, struct kszphy_ptp_priv, mii_ts);
-	struct phy_device *phydev = ptp_priv->phydev;
-	struct lan8814_shared_priv *shared = phydev->shared->priv;
 	struct lan8814_ptp_rx_ts *rx_ts, *tmp;
 	int txcfg = 0, rxcfg = 0;
 	int pkt_ts_enable;
@@ -2492,20 +2665,6 @@ static int lan8814_hwtstamp(struct mii_timestamper *mii_ts,
 	else
 		lan8814_config_ts_intr(ptp_priv->phydev, false);
 
-	mutex_lock(&shared->shared_lock);
-	if (config->rx_filter != HWTSTAMP_FILTER_NONE)
-		shared->ref++;
-	else
-		shared->ref--;
-
-	if (shared->ref)
-		lanphy_write_page_reg(ptp_priv->phydev, 4, PTP_CMD_CTL,
-				      PTP_CMD_CTL_PTP_ENABLE_);
-	else
-		lanphy_write_page_reg(ptp_priv->phydev, 4, PTP_CMD_CTL,
-				      PTP_CMD_CTL_PTP_DISABLE_);
-	mutex_unlock(&shared->shared_lock);
-
 	/* In case of multiple starts and stops, these needs to be cleared */
 	list_for_each_entry_safe(rx_ts, tmp, &ptp_priv->rx_ts_list, list) {
 		list_del(&rx_ts->list);
@@ -2677,6 +2836,29 @@ static int lan8814_ptpci_settime64(struct ptp_clock_info *ptpci,
 	return 0;
 }
 
+static void lan8814_ptp_set_target(struct phy_device *phydev, int event,
+				   s64 start_sec, u32 start_nsec)
+{
+	/* Set the start time */
+	lanphy_write_page_reg(phydev, 4, LAN8814_PTP_CLOCK_TARGET_SEC_LO(event),
+			      lower_16_bits(start_sec));
+	lanphy_write_page_reg(phydev, 4, LAN8814_PTP_CLOCK_TARGET_SEC_HI(event),
+			      upper_16_bits(start_sec));
+
+	lanphy_write_page_reg(phydev, 4, LAN8814_PTP_CLOCK_TARGET_NS_LO(event),
+			      lower_16_bits(start_nsec));
+	lanphy_write_page_reg(phydev, 4, LAN8814_PTP_CLOCK_TARGET_NS_HI(event),
+			      upper_16_bits(start_nsec) & 0x3fff);
+}
+
+static void lan8814_ptp_update_target(struct phy_device *phydev, time64_t sec)
+{
+	lan8814_ptp_set_target(phydev, LAN8814_EVENT_A,
+			       sec + LAN8814_BUFFER_TIME, 0);
+	lan8814_ptp_set_target(phydev, LAN8814_EVENT_B,
+			       sec + LAN8814_BUFFER_TIME, 0);
+}
+
 static void lan8814_ptp_clock_step(struct phy_device *phydev,
 				   s64 time_step_ns)
 {
@@ -2698,6 +2880,7 @@ static void lan8814_ptp_clock_step(struct phy_device *phydev,
 			nano_seconds -= 1000000000;
 		}
 		lan8814_ptp_clock_set(phydev, set_seconds, nano_seconds);
+		lan8814_ptp_update_target(phydev, set_seconds);
 		return;
 	} else if (time_step_ns < -15000000000LL) {
 		/* convert to clock set */
@@ -2713,6 +2896,7 @@ static void lan8814_ptp_clock_step(struct phy_device *phydev,
 		}
 		nano_seconds -= nano_seconds_step;
 		lan8814_ptp_clock_set(phydev, set_seconds, nano_seconds);
+		lan8814_ptp_update_target(phydev, set_seconds);
 		return;
 	}
 
@@ -2749,6 +2933,8 @@ static void lan8814_ptp_clock_step(struct phy_device *phydev,
 	}
 
 	while (seconds) {
+		u32 nsec;
+
 		if (seconds > 0) {
 			u32 adjustment_value = (u32)seconds;
 			u16 adjustment_value_lo, adjustment_value_hi;
@@ -2765,6 +2951,10 @@ static void lan8814_ptp_clock_step(struct phy_device *phydev,
 					      PTP_LTC_STEP_ADJ_DIR_ |
 					      adjustment_value_hi);
 			seconds -= ((s32)adjustment_value);
+
+			lan8814_ptp_clock_get(phydev, &set_seconds, &nsec);
+			set_seconds -= adjustment_value;
+			lan8814_ptp_update_target(phydev, set_seconds);
 		} else {
 			u32 adjustment_value = (u32)(-seconds);
 			u16 adjustment_value_lo, adjustment_value_hi;
@@ -2780,6 +2970,10 @@ static void lan8814_ptp_clock_step(struct phy_device *phydev,
 			lanphy_write_page_reg(phydev, 4, PTP_LTC_STEP_ADJ_HI,
 					      adjustment_value_hi);
 			seconds += ((s32)adjustment_value);
+
+			lan8814_ptp_clock_get(phydev, &set_seconds, &nsec);
+			set_seconds += adjustment_value;
+			lan8814_ptp_update_target(phydev, set_seconds);
 		}
 		lanphy_write_page_reg(phydev, 4, PTP_CMD_CTL,
 				      PTP_CMD_CTL_PTP_LTC_STEP_SEC_);
@@ -2845,6 +3039,335 @@ static int lan8814_ptpci_adjfine(struct ptp_clock_info *ptpci, long scaled_ppm)
 	return 0;
 }
 
+static void lan8814_ptp_set_reload(struct phy_device *phydev, int event,
+				   s64 period_sec, u32 period_nsec)
+{
+	lanphy_write_page_reg(phydev, 4,
+			      LAN8814_PTP_CLOCK_TARGET_RELOAD_SEC_LO(event),
+			      lower_16_bits(period_sec));
+	lanphy_write_page_reg(phydev, 4,
+			      LAN8814_PTP_CLOCK_TARGET_RELOAD_SEC_HI(event),
+			      upper_16_bits(period_sec));
+
+	lanphy_write_page_reg(phydev, 4,
+			      LAN8814_PTP_CLOCK_TARGET_RELOAD_NS_LO(event),
+			      lower_16_bits(period_nsec));
+	lanphy_write_page_reg(phydev, 4,
+			      LAN8814_PTP_CLOCK_TARGET_RELOAD_NS_HI(event),
+			      upper_16_bits(period_nsec) & 0x3fff);
+}
+
+static void lan8814_ptp_enable_event(struct phy_device *phydev, int event,
+				     int pulse_width)
+{
+	u16 val;
+
+	val = lanphy_read_page_reg(phydev, 4, LAN8814_PTP_GENERAL_CONFIG);
+	/* Set the pulse width of the event */
+	val &= ~(LAN8814_PTP_GENERAL_CONFIG_LTC_EVENT_MASK(event));
+	/* Make sure that the target clock will be incremented each time when
+	 * local time reaches or pass it
+	 */
+	val |= LAN8814_PTP_GENERAL_CONFIG_LTC_EVENT_SET(event, pulse_width);
+	val &= ~(LAN8814_PTP_GENERAL_CONFIG_RELOAD_ADD_X(event));
+	/* Set the polarity high */
+	val |= LAN8814_PTP_GENERAL_CONFIG_POLARITY_X(event);
+	lanphy_write_page_reg(phydev, 4, LAN8814_PTP_GENERAL_CONFIG, val);
+}
+
+static void lan8814_ptp_disable_event(struct phy_device *phydev, int event)
+{
+	u16 val;
+
+	/* Set target to too far in the future, effectively disabling it */
+	lan8814_ptp_set_target(phydev, event, 0xFFFFFFFF, 0);
+
+	/* And then reload once it recheas the target */
+	val = lanphy_read_page_reg(phydev, 4, LAN8814_PTP_GENERAL_CONFIG);
+	val |= LAN8814_PTP_GENERAL_CONFIG_RELOAD_ADD_X(event);
+	lanphy_write_page_reg(phydev, 4, LAN8814_PTP_GENERAL_CONFIG, val);
+}
+
+static void lan8814_ptp_perout_off(struct phy_device *phydev, int pin)
+{
+	u16 val;
+
+	/* Disable gpio alternate function,
+	 * 1: select as gpio,
+	 * 0: select alt func
+	 */
+	val = lanphy_read_page_reg(phydev, 4, LAN8814_GPIO_EN_ADDR(pin));
+	val |= LAN8814_GPIO_EN_BIT(pin);
+	lanphy_write_page_reg(phydev, 4, LAN8814_GPIO_EN_ADDR(pin), val);
+
+	val = lanphy_read_page_reg(phydev, 4, LAN8814_GPIO_DIR_ADDR(pin));
+	val &= ~LAN8814_GPIO_DIR_BIT(pin);
+	lanphy_write_page_reg(phydev, 4, LAN8814_GPIO_DIR_ADDR(pin), val);
+
+	val = lanphy_read_page_reg(phydev, 4, LAN8814_GPIO_BUF_ADDR(pin));
+	val &= ~LAN8814_GPIO_BUF_BIT(pin);
+	lanphy_write_page_reg(phydev, 4, LAN8814_GPIO_BUF_ADDR(pin), val);
+}
+
+static void lan8814_ptp_perout_on(struct phy_device *phydev, int pin)
+{
+	int val;
+
+	/* Set as gpio output */
+	val = lanphy_read_page_reg(phydev, 4, LAN8814_GPIO_DIR_ADDR(pin));
+	val |= LAN8814_GPIO_DIR_BIT(pin);
+	lanphy_write_page_reg(phydev, 4, LAN8814_GPIO_DIR_ADDR(pin), val);
+
+	/* Enable gpio 0:for alternate function, 1:gpio */
+	val = lanphy_read_page_reg(phydev, 4, LAN8814_GPIO_EN_ADDR(pin));
+	val &= ~LAN8814_GPIO_EN_BIT(pin);
+	lanphy_write_page_reg(phydev, 4, LAN8814_GPIO_EN_ADDR(pin), val);
+
+	/* Set buffer type to push pull */
+	val = lanphy_read_page_reg(phydev, 4, LAN8814_GPIO_BUF_ADDR(pin));
+	val |= LAN8814_GPIO_BUF_BIT(pin);
+	lanphy_write_page_reg(phydev, 4, LAN8814_GPIO_BUF_ADDR(pin), val);
+}
+
+static int lan8814_ptp_perout(struct ptp_clock_info *ptpci,
+			      struct ptp_clock_request *rq, int on)
+{
+	struct lan8814_shared_priv *shared = container_of(ptpci, struct lan8814_shared_priv,
+							  ptp_clock_info);
+	struct phy_device *phydev = shared->phydev;
+	struct timespec64 ts_on, ts_period;
+	s64 on_nsec, period_nsec;
+	int pulse_width;
+	int pin, event;
+
+	/* Reject requests with unsupported flags */
+	if (rq->perout.flags & ~PTP_PEROUT_DUTY_CYCLE)
+		return -EOPNOTSUPP;
+
+	mutex_lock(&shared->shared_lock);
+	event = rq->perout.index;
+	pin = ptp_find_pin(shared->ptp_clock, PTP_PF_PEROUT, event);
+	if (pin < 0 || pin >= LAN8814_PTP_PEROUT_NUM) {
+		mutex_unlock(&shared->shared_lock);
+		return -EBUSY;
+	}
+
+	if (!on) {
+		lan8814_ptp_perout_off(phydev, pin);
+		lan8814_ptp_disable_event(phydev, event);
+		mutex_unlock(&shared->shared_lock);
+		return 0;
+	}
+
+	ts_on.tv_sec = rq->perout.on.sec;
+	ts_on.tv_nsec = rq->perout.on.nsec;
+	on_nsec = timespec64_to_ns(&ts_on);
+
+	ts_period.tv_sec = rq->perout.period.sec;
+	ts_period.tv_nsec = rq->perout.period.nsec;
+	period_nsec = timespec64_to_ns(&ts_period);
+
+	if (period_nsec < 200) {
+		pr_warn_ratelimited("%s: perout period too small, minimum is 200 nsec\n",
+				    phydev_name(phydev));
+		mutex_unlock(&shared->shared_lock);
+		return -EOPNOTSUPP;
+	}
+
+	if (on_nsec >= period_nsec) {
+		pr_warn_ratelimited("%s: pulse width must be smaller than period\n",
+				    phydev_name(phydev));
+		mutex_unlock(&shared->shared_lock);
+		return -EINVAL;
+	}
+
+	switch (on_nsec) {
+	case 200000000:
+		pulse_width = LAN8841_PTP_GENERAL_CONFIG_LTC_EVENT_200MS;
+		break;
+	case 100000000:
+		pulse_width = LAN8841_PTP_GENERAL_CONFIG_LTC_EVENT_100MS;
+		break;
+	case 50000000:
+		pulse_width = LAN8841_PTP_GENERAL_CONFIG_LTC_EVENT_50MS;
+		break;
+	case 10000000:
+		pulse_width = LAN8841_PTP_GENERAL_CONFIG_LTC_EVENT_10MS;
+		break;
+	case 5000000:
+		pulse_width = LAN8841_PTP_GENERAL_CONFIG_LTC_EVENT_5MS;
+		break;
+	case 1000000:
+		pulse_width = LAN8841_PTP_GENERAL_CONFIG_LTC_EVENT_1MS;
+		break;
+	case 500000:
+		pulse_width = LAN8841_PTP_GENERAL_CONFIG_LTC_EVENT_500US;
+		break;
+	case 100000:
+		pulse_width = LAN8841_PTP_GENERAL_CONFIG_LTC_EVENT_100US;
+		break;
+	case 50000:
+		pulse_width = LAN8841_PTP_GENERAL_CONFIG_LTC_EVENT_50US;
+		break;
+	case 10000:
+		pulse_width = LAN8841_PTP_GENERAL_CONFIG_LTC_EVENT_10US;
+		break;
+	case 5000:
+		pulse_width = LAN8841_PTP_GENERAL_CONFIG_LTC_EVENT_5US;
+		break;
+	case 1000:
+		pulse_width = LAN8841_PTP_GENERAL_CONFIG_LTC_EVENT_1US;
+		break;
+	case 500:
+		pulse_width = LAN8841_PTP_GENERAL_CONFIG_LTC_EVENT_500NS;
+		break;
+	case 100:
+		pulse_width = LAN8841_PTP_GENERAL_CONFIG_LTC_EVENT_100NS;
+		break;
+	default:
+		pr_warn_ratelimited("%s: Use default duty cycle of 100ns\n",
+				    phydev_name(phydev));
+		pulse_width = LAN8841_PTP_GENERAL_CONFIG_LTC_EVENT_100NS;
+		break;
+	}
+
+	/* Configure to pulse every period */
+	lan8814_ptp_enable_event(phydev, event, pulse_width);
+	lan8814_ptp_set_target(phydev, event, rq->perout.start.sec,
+			       rq->perout.start.nsec);
+	lan8814_ptp_set_reload(phydev, event, rq->perout.period.sec,
+			       rq->perout.period.nsec);
+	lan8814_ptp_perout_on(phydev, pin);
+	mutex_unlock(&shared->shared_lock);
+
+	return 0;
+}
+
+static void lan8814_ptp_extts_on(struct phy_device *phydev, int pin, u32 flags)
+{
+	u16 tmp;
+
+	/* Set as gpio input */
+	tmp = lanphy_read_page_reg(phydev, 4, LAN8814_GPIO_DIR_ADDR(pin));
+	tmp &= ~LAN8814_GPIO_DIR_BIT(pin);
+	lanphy_write_page_reg(phydev, 4, LAN8814_GPIO_DIR_ADDR(pin), tmp);
+
+	/* Map the pin to ltc pin 0 of the capture map registers */
+	tmp = lanphy_read_page_reg(phydev, 4, PTP_GPIO_CAP_MAP_LO);
+	tmp |= pin;
+	lanphy_write_page_reg(phydev, 4, PTP_GPIO_CAP_MAP_LO, tmp);
+
+	/* Enable capture on the edges of the ltc pin */
+	tmp = lanphy_read_page_reg(phydev, 4, PTP_GPIO_CAP_EN);
+	if (flags & PTP_RISING_EDGE)
+		tmp |= PTP_GPIO_CAP_EN_GPIO_RE_CAPTURE_ENABLE(0);
+	if (flags & PTP_FALLING_EDGE)
+		tmp |= PTP_GPIO_CAP_EN_GPIO_FE_CAPTURE_ENABLE(0);
+	lanphy_write_page_reg(phydev, 4, PTP_GPIO_CAP_EN, tmp);
+
+	/* Enable interrupt top interrupt */
+	tmp = lanphy_read_page_reg(phydev, 4, PTP_COMMON_INT_ENA);
+	tmp |= PTP_COMMON_INT_ENA_GPIO_CAP_EN;
+	lanphy_write_page_reg(phydev, 4, PTP_COMMON_INT_ENA, tmp);
+}
+
+static void lan8814_ptp_extts_off(struct phy_device *phydev, int pin)
+{
+	u16 tmp;
+
+	/* Set as gpio out */
+	tmp = lanphy_read_page_reg(phydev, 4, LAN8814_GPIO_DIR_ADDR(pin));
+	tmp |= LAN8814_GPIO_DIR_BIT(pin);
+	lanphy_write_page_reg(phydev, 4, LAN8814_GPIO_DIR_ADDR(pin), tmp);
+
+	/* Enable alternate, 0:for alternate function, 1:gpio */
+	tmp = lanphy_read_page_reg(phydev, 4, LAN8814_GPIO_EN_ADDR(pin));
+	tmp &= ~LAN8814_GPIO_EN_BIT(pin);
+	lanphy_write_page_reg(phydev, 4, LAN8814_GPIO_EN_ADDR(pin), tmp);
+
+	/* Clear the mapping of pin to registers 0 of the capture registers */
+	tmp = lanphy_read_page_reg(phydev, 4, PTP_GPIO_CAP_MAP_LO);
+	tmp &= ~GENMASK(3, 0);
+	lanphy_write_page_reg(phydev, 4, PTP_GPIO_CAP_MAP_LO, tmp);
+
+	/* Disable capture on both of the edges */
+	tmp = lanphy_read_page_reg(phydev, 4, PTP_GPIO_CAP_EN);
+	tmp &= ~PTP_GPIO_CAP_EN_GPIO_RE_CAPTURE_ENABLE(pin);
+	tmp &= ~PTP_GPIO_CAP_EN_GPIO_FE_CAPTURE_ENABLE(pin);
+	lanphy_write_page_reg(phydev, 4, PTP_GPIO_CAP_EN, tmp);
+
+	/* Disable interrupt top interrupt */
+	tmp = lanphy_read_page_reg(phydev, 4, PTP_COMMON_INT_ENA);
+	tmp &= ~PTP_COMMON_INT_ENA_GPIO_CAP_EN;
+	lanphy_write_page_reg(phydev, 4, PTP_COMMON_INT_ENA, tmp);
+}
+
+static int lan8814_ptp_extts(struct ptp_clock_info *ptpci,
+			     struct ptp_clock_request *rq, int on)
+{
+	struct lan8814_shared_priv *shared = container_of(ptpci, struct lan8814_shared_priv,
+							  ptp_clock_info);
+	struct phy_device *phydev = shared->phydev;
+	int pin;
+
+	if (rq->extts.flags & ~(PTP_ENABLE_FEATURE |
+				PTP_EXTTS_EDGES |
+				PTP_STRICT_FLAGS))
+		return -EOPNOTSUPP;
+
+	pin = ptp_find_pin(shared->ptp_clock, PTP_PF_EXTTS,
+			   rq->extts.index);
+	if (pin == -1 || pin != LAN8814_PTP_EXTTS_NUM)
+		return -EINVAL;
+
+	mutex_lock(&shared->shared_lock);
+	if (on)
+		lan8814_ptp_extts_on(phydev, pin, rq->extts.flags);
+	else
+		lan8814_ptp_extts_off(phydev, pin);
+
+	mutex_unlock(&shared->shared_lock);
+
+	return 0;
+}
+
+static int lan8814_ptpci_enable(struct ptp_clock_info *ptpci,
+				struct ptp_clock_request *rq, int on)
+{
+	switch (rq->type) {
+	case PTP_CLK_REQ_PEROUT:
+		return lan8814_ptp_perout(ptpci, rq, on);
+	case PTP_CLK_REQ_EXTTS:
+		return lan8814_ptp_extts(ptpci, rq, on);
+	default:
+		return -EINVAL;
+	}
+}
+
+static int lan8814_ptpci_verify(struct ptp_clock_info *ptp, unsigned int pin,
+				enum ptp_pin_function func, unsigned int chan)
+{
+	switch (func) {
+	case PTP_PF_NONE:
+	case PTP_PF_PEROUT:
+		/* Only pins 0 and 1 can generate perout signals. And for pin 0
+		 * there is only chan 0 (event A) and for pin 1 there is only
+		 * chan 1 (event B)
+		 */
+		if (pin >= LAN8814_PTP_PEROUT_NUM || pin != chan)
+			return -1;
+		break;
+	case PTP_PF_EXTTS:
+		if (pin != LAN8814_PTP_EXTTS_NUM)
+			return -1;
+		break;
+	default:
+		return -1;
+	}
+
+	return 0;
+}
+
 static bool lan8814_get_sig_tx(struct sk_buff *skb, u16 *sig)
 {
 	struct ptp_header *ptp_header;
@@ -3010,6 +3533,64 @@ static void lan8814_handle_ptp_interrupt(struct phy_device *phydev, u16 status)
 	}
 }
 
+static int lan8814_gpio_process_cap(struct lan8814_shared_priv *shared)
+{
+	struct phy_device *phydev = shared->phydev;
+	struct ptp_clock_event ptp_event = {0};
+	unsigned long nsec;
+	s64 sec;
+	u16 tmp;
+
+	/* This is 0 because whatever was the input pin it was mapped it to
+	 * ltc gpio pin 0
+	 */
+	tmp = lanphy_read_page_reg(phydev, 4, PTP_GPIO_SEL);
+	tmp |= PTP_GPIO_SEL_GPIO_SEL(0);
+	lanphy_write_page_reg(phydev, 4, PTP_GPIO_SEL, tmp);
+
+	tmp = lanphy_read_page_reg(phydev, 4, PTP_GPIO_CAP_STS);
+	if (!(tmp & PTP_GPIO_CAP_STS_PTP_GPIO_RE_STS(0)) &&
+	    !(tmp & PTP_GPIO_CAP_STS_PTP_GPIO_FE_STS(0)))
+		return -1;
+
+	if (tmp & BIT(0)) {
+		sec = lanphy_read_page_reg(phydev, 4, PTP_GPIO_RE_LTC_SEC_HI_CAP);
+		sec <<= 16;
+		sec |= lanphy_read_page_reg(phydev, 4, PTP_GPIO_RE_LTC_SEC_LO_CAP);
+
+		nsec = lanphy_read_page_reg(phydev, 4, PTP_GPIO_RE_LTC_NS_HI_CAP) & 0x3fff;
+		nsec <<= 16;
+		nsec |= lanphy_read_page_reg(phydev, 4, PTP_GPIO_RE_LTC_NS_LO_CAP);
+	} else {
+		sec = lanphy_read_page_reg(phydev, 4, PTP_GPIO_FE_LTC_SEC_HI_CAP);
+		sec <<= 16;
+		sec |= lanphy_read_page_reg(phydev, 4, PTP_GPIO_FE_LTC_SEC_LO_CAP);
+
+		nsec = lanphy_read_page_reg(phydev, 4, PTP_GPIO_FE_LTC_NS_HI_CAP) & 0x3fff;
+		nsec <<= 16;
+		nsec |= lanphy_read_page_reg(phydev, 4, PTP_GPIO_RE_LTC_NS_LO_CAP);
+	}
+
+	ptp_event.index = 0;
+	ptp_event.timestamp = ktime_set(sec, nsec);
+	ptp_event.type = PTP_CLOCK_EXTTS;
+	ptp_clock_event(shared->ptp_clock, &ptp_event);
+
+	return 0;
+}
+
+static int lan8814_handle_gpio_interrupt(struct phy_device *phydev, u16 status)
+{
+	struct lan8814_shared_priv *shared = phydev->shared->priv;
+	int ret;
+
+	mutex_lock(&shared->shared_lock);
+	ret = lan8814_gpio_process_cap(shared);
+	mutex_unlock(&shared->shared_lock);
+
+	return ret;
+}
+
 static int lan8804_config_init(struct phy_device *phydev)
 {
 	int val;
@@ -3114,6 +3695,9 @@ static irqreturn_t lan8814_handle_interrupt(struct phy_device *phydev)
 		ret = IRQ_HANDLED;
 	}
 
+	if (!lan8814_handle_gpio_interrupt(phydev, irq_status))
+		ret = IRQ_HANDLED;
+
 	return ret;
 }
 
@@ -3210,19 +3794,39 @@ static int lan8814_ptp_probe_once(struct phy_device *phydev)
 	/* Initialise shared lock for clock*/
 	mutex_init(&shared->shared_lock);
 
+	shared->pin_config = devm_kmalloc_array(&phydev->mdio.dev,
+						LAN8814_PTP_GPIO_NUM,
+						sizeof(*shared->pin_config),
+						GFP_KERNEL);
+	if (!shared->pin_config)
+		return -ENOMEM;
+
+	for (int i = 0; i < LAN8814_PTP_GPIO_NUM; i++) {
+		struct ptp_pin_desc *ptp_pin = &shared->pin_config[i];
+
+		memset(ptp_pin, 0, sizeof(*ptp_pin));
+		snprintf(ptp_pin->name,
+			 sizeof(ptp_pin->name), "lan8814_ptp_pin_%02d", i);
+		ptp_pin->index = i;
+		ptp_pin->func =  PTP_PF_NONE;
+	}
+
 	shared->ptp_clock_info.owner = THIS_MODULE;
 	snprintf(shared->ptp_clock_info.name, 30, "%s", phydev->drv->name);
 	shared->ptp_clock_info.max_adj = 31249999;
 	shared->ptp_clock_info.n_alarm = 0;
-	shared->ptp_clock_info.n_ext_ts = 0;
-	shared->ptp_clock_info.n_pins = 0;
+	shared->ptp_clock_info.n_ext_ts = LAN8814_PTP_EXTTS_NUM;
+	shared->ptp_clock_info.n_pins = LAN8814_PTP_GPIO_NUM;
 	shared->ptp_clock_info.pps = 0;
-	shared->ptp_clock_info.pin_config = NULL;
+	shared->ptp_clock_info.pin_config = shared->pin_config;
+	shared->ptp_clock_info.n_per_out = LAN8814_PTP_PEROUT_NUM;
 	shared->ptp_clock_info.adjfine = lan8814_ptpci_adjfine;
 	shared->ptp_clock_info.adjtime = lan8814_ptpci_adjtime;
 	shared->ptp_clock_info.gettime64 = lan8814_ptpci_gettime64;
 	shared->ptp_clock_info.settime64 = lan8814_ptpci_settime64;
 	shared->ptp_clock_info.getcrosststamp = NULL;
+	shared->ptp_clock_info.enable = lan8814_ptpci_enable;
+	shared->ptp_clock_info.verify = lan8814_ptpci_verify;
 
 	shared->ptp_clock = ptp_clock_register(&shared->ptp_clock_info,
 					       &phydev->mdio.dev);
@@ -3247,6 +3851,9 @@ static int lan8814_ptp_probe_once(struct phy_device *phydev)
 	lanphy_write_page_reg(phydev, 4, PTP_OPERATING_MODE,
 			      PTP_OPERATING_MODE_STANDALONE_);
 
+	/* Enable ptp to run LTC clock for ptp and gpio 1PPS operation */
+	lanphy_write_page_reg(phydev, 4, PTP_CMD_CTL, PTP_CMD_CTL_PTP_ENABLE_);
+
 	return 0;
 }
 
@@ -3516,7 +4123,7 @@ static int lan8841_config_intr(struct phy_device *phydev)
 
 	if (phydev->interrupts == PHY_INTERRUPT_ENABLED) {
 		err = phy_read(phydev, LAN8814_INTS);
-		if (err)
+		if (err < 0)
 			return err;
 
 		/* Enable / disable interrupts. It is OK to enable PTP interrupt
@@ -3532,6 +4139,14 @@ static int lan8841_config_intr(struct phy_device *phydev)
 			return err;
 
 		err = phy_read(phydev, LAN8814_INTS);
+		if (err < 0)
+			return err;
+
+		/* Getting a positive value doesn't mean that is an error, it
+		 * just indicates what was the status. Therefore make sure to
+		 * clear the value and say that there is no error.
+		 */
+		err = 0;
 	}
 
 	return err;
@@ -4676,7 +5291,8 @@ static int lan8841_suspend(struct phy_device *phydev)
 	struct kszphy_priv *priv = phydev->priv;
 	struct kszphy_ptp_priv *ptp_priv = &priv->ptp_priv;
 
-	ptp_cancel_worker_sync(ptp_priv->ptp_clock);
+	if (ptp_priv->ptp_clock)
+		ptp_cancel_worker_sync(ptp_priv->ptp_clock);
 
 	return genphy_suspend(phydev);
 }
@@ -4813,10 +5429,11 @@ static struct phy_driver ksphy_driver[] = {
 	/* PHY_BASIC_FEATURES */
 	.probe		= kszphy_probe,
 	.config_init	= ksz8061_config_init,
+	.soft_reset	= genphy_soft_reset,
 	.config_intr	= kszphy_config_intr,
 	.handle_interrupt = kszphy_handle_interrupt,
 	.suspend	= kszphy_suspend,
-	.resume		= kszphy_resume,
+	.resume		= ksz8061_resume,
 }, {
 	.phy_id		= PHY_ID_KSZ9021,
 	.phy_id_mask	= 0x000ffffe,
@@ -4970,7 +5587,7 @@ static struct phy_driver ksphy_driver[] = {
 	.config_intr	= kszphy_config_intr,
 	.handle_interrupt = kszphy_handle_interrupt,
 	.suspend	= genphy_suspend,
-	.resume		= genphy_resume,
+	.resume		= ksz9477_resume,
 	.get_features	= ksz9477_get_features,
 } };
 
@@ -4994,6 +5611,7 @@ static struct mdio_device_id __maybe_unused micrel_tbl[] = {
 	{ PHY_ID_KSZ8081, MICREL_PHY_ID_MASK },
 	{ PHY_ID_KSZ8873MLL, MICREL_PHY_ID_MASK },
 	{ PHY_ID_KSZ886X, MICREL_PHY_ID_MASK },
+	{ PHY_ID_KSZ9477, MICREL_PHY_ID_MASK },
 	{ PHY_ID_LAN8814, MICREL_PHY_ID_MASK },
 	{ PHY_ID_LAN8804, MICREL_PHY_ID_MASK },
 	{ PHY_ID_LAN8841, MICREL_PHY_ID_MASK },