v4.19.13 snapshot.
diff --git a/drivers/net/phy/dp83848.c b/drivers/net/phy/dp83848.c
new file mode 100644
index 0000000..6e8e423
--- /dev/null
+++ b/drivers/net/phy/dp83848.c
@@ -0,0 +1,137 @@
+/*
+ * Driver for the Texas Instruments DP83848 PHY
+ *
+ * Copyright (C) 2015-2016 Texas Instruments Incorporated - http://www.ti.com/
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/module.h>
+#include <linux/phy.h>
+
+#define TI_DP83848C_PHY_ID 0x20005ca0
+#define TI_DP83620_PHY_ID 0x20005ce0
+#define NS_DP83848C_PHY_ID 0x20005c90
+#define TLK10X_PHY_ID 0x2000a210
+
+/* Registers */
+#define DP83848_MICR 0x11 /* MII Interrupt Control Register */
+#define DP83848_MISR 0x12 /* MII Interrupt Status Register */
+
+/* MICR Register Fields */
+#define DP83848_MICR_INT_OE BIT(0) /* Interrupt Output Enable */
+#define DP83848_MICR_INTEN BIT(1) /* Interrupt Enable */
+
+/* MISR Register Fields */
+#define DP83848_MISR_RHF_INT_EN BIT(0) /* Receive Error Counter */
+#define DP83848_MISR_FHF_INT_EN BIT(1) /* False Carrier Counter */
+#define DP83848_MISR_ANC_INT_EN BIT(2) /* Auto-negotiation complete */
+#define DP83848_MISR_DUP_INT_EN BIT(3) /* Duplex Status */
+#define DP83848_MISR_SPD_INT_EN BIT(4) /* Speed status */
+#define DP83848_MISR_LINK_INT_EN BIT(5) /* Link status */
+#define DP83848_MISR_ED_INT_EN BIT(6) /* Energy detect */
+#define DP83848_MISR_LQM_INT_EN BIT(7) /* Link Quality Monitor */
+
+#define DP83848_INT_EN_MASK \
+ (DP83848_MISR_ANC_INT_EN | \
+ DP83848_MISR_DUP_INT_EN | \
+ DP83848_MISR_SPD_INT_EN | \
+ DP83848_MISR_LINK_INT_EN)
+
+static int dp83848_ack_interrupt(struct phy_device *phydev)
+{
+ int err = phy_read(phydev, DP83848_MISR);
+
+ return err < 0 ? err : 0;
+}
+
+static int dp83848_config_intr(struct phy_device *phydev)
+{
+ int control, ret;
+
+ control = phy_read(phydev, DP83848_MICR);
+ if (control < 0)
+ return control;
+
+ if (phydev->interrupts == PHY_INTERRUPT_ENABLED) {
+ control |= DP83848_MICR_INT_OE;
+ control |= DP83848_MICR_INTEN;
+
+ ret = phy_write(phydev, DP83848_MISR, DP83848_INT_EN_MASK);
+ if (ret < 0)
+ return ret;
+ } else {
+ control &= ~DP83848_MICR_INTEN;
+ }
+
+ return phy_write(phydev, DP83848_MICR, control);
+}
+
+static int dp83848_config_init(struct phy_device *phydev)
+{
+ int err;
+ int val;
+
+ err = genphy_config_init(phydev);
+ if (err < 0)
+ return err;
+
+ /* DP83620 always reports Auto Negotiation Ability on BMSR. Instead,
+ * we check initial value of BMCR Auto negotiation enable bit
+ */
+ val = phy_read(phydev, MII_BMCR);
+ if (!(val & BMCR_ANENABLE))
+ phydev->autoneg = AUTONEG_DISABLE;
+
+ return 0;
+}
+
+static struct mdio_device_id __maybe_unused dp83848_tbl[] = {
+ { TI_DP83848C_PHY_ID, 0xfffffff0 },
+ { NS_DP83848C_PHY_ID, 0xfffffff0 },
+ { TI_DP83620_PHY_ID, 0xfffffff0 },
+ { TLK10X_PHY_ID, 0xfffffff0 },
+ { }
+};
+MODULE_DEVICE_TABLE(mdio, dp83848_tbl);
+
+#define DP83848_PHY_DRIVER(_id, _name, _config_init) \
+ { \
+ .phy_id = _id, \
+ .phy_id_mask = 0xfffffff0, \
+ .name = _name, \
+ .features = PHY_BASIC_FEATURES, \
+ .flags = PHY_HAS_INTERRUPT, \
+ \
+ .soft_reset = genphy_soft_reset, \
+ .config_init = _config_init, \
+ .suspend = genphy_suspend, \
+ .resume = genphy_resume, \
+ \
+ /* IRQ related */ \
+ .ack_interrupt = dp83848_ack_interrupt, \
+ .config_intr = dp83848_config_intr, \
+ }
+
+static struct phy_driver dp83848_driver[] = {
+ DP83848_PHY_DRIVER(TI_DP83848C_PHY_ID, "TI DP83848C 10/100 Mbps PHY",
+ genphy_config_init),
+ DP83848_PHY_DRIVER(NS_DP83848C_PHY_ID, "NS DP83848C 10/100 Mbps PHY",
+ genphy_config_init),
+ DP83848_PHY_DRIVER(TI_DP83620_PHY_ID, "TI DP83620 10/100 Mbps PHY",
+ dp83848_config_init),
+ DP83848_PHY_DRIVER(TLK10X_PHY_ID, "TI TLK10X 10/100 Mbps PHY",
+ genphy_config_init),
+};
+module_phy_driver(dp83848_driver);
+
+MODULE_DESCRIPTION("Texas Instruments DP83848 PHY driver");
+MODULE_AUTHOR("Andrew F. Davis <afd@ti.com>");
+MODULE_LICENSE("GPL");