diff --git a/drivers/net/dsa/microchip/ksz8.c b/drivers/net/dsa/microchip/ksz8.c
index 0f84b2e7d25d..4ec2d5d2a1bc 100644
--- a/drivers/net/dsa/microchip/ksz8.c
+++ b/drivers/net/dsa/microchip/ksz8.c
@@ -798,6 +798,40 @@ static int ksz879x_set_loopback(struct ksz_device *dev, u16 port, u16 val)
 			 stat3);
 }
 
+static int ksz87xx_apply_low_loss_preset(struct ksz_device *dev, bool enable)
+{
+	/* Apply the Microchip erratum short-cable preset (LPF 62 MHz, EQ init 0)
+	 * providing a conservative configuration for short or low-loss cables.
+	 */
+	u8 lpf_bw, eq_init;
+	int ret;
+
+	lpf_bw = KSZ87XX_PHY_LPF_62MHZ;
+	eq_init = KSZ87XX_DSP_EQ_INIT_LOW_LOSS;
+
+	if (!ksz_is_ksz87xx(dev))
+		return -EOPNOTSUPP;
+
+	if (!enable) {
+		/* Restore default values (LPF 90 MHz, EQ init 15). */
+		lpf_bw = KSZ87XX_PHY_LPF_90MHZ;
+		eq_init = KSZ87XX_DSP_EQ_INIT_FACTORY;
+	}
+
+	ret = ksz8_ind_write8(dev, TABLE_LINK_MD, KSZ87XX_REG_PHY_LPF, lpf_bw);
+	if (ret)
+		return ret;
+
+	dev->lpf_bw = lpf_bw;
+	ret = ksz8_ind_write8(dev, TABLE_LINK_MD, KSZ87XX_REG_DSP_EQ, eq_init);
+	if (ret)
+		return ret;
+
+	dev->eq_init = eq_init;
+
+	return ret;
+}
+
 /**
  * ksz8_r_phy_ctrl - Translates and reads from the SMI interface to a MIIM PHY
  *		     Control register (Reg. 31).
@@ -1046,6 +1080,22 @@ static int ksz8_r_phy(struct ksz_device *dev, u16 phy, u16 reg, u16 *val)
 		if (ret)
 			return ret;
 
+		break;
+	case PHY_REG_KSZ87XX_SHORT_CABLE:
+		if (!ksz_is_ksz87xx(dev))
+			return -EOPNOTSUPP;
+		data = !!(dev->lpf_bw == KSZ87XX_PHY_LPF_62MHZ &&
+				dev->eq_init == KSZ87XX_DSP_EQ_INIT_LOW_LOSS);
+		break;
+	case PHY_REG_KSZ87XX_LPF_BW:
+		if (!ksz_is_ksz87xx(dev))
+			return -EOPNOTSUPP;
+		data = dev->lpf_bw;
+		break;
+	case PHY_REG_KSZ87XX_EQ_INIT:
+		if (!ksz_is_ksz87xx(dev))
+			return -EOPNOTSUPP;
+		data = dev->eq_init;
 		break;
 	default:
 		processed = false;
@@ -1272,6 +1322,41 @@ static int ksz8_w_phy(struct ksz_device *dev, u16 phy, u16 reg, u16 val)
 		if (ret)
 			return ret;
 		break;
+	case PHY_REG_KSZ87XX_SHORT_CABLE:
+		if (!ksz_is_ksz87xx(dev))
+			return -EOPNOTSUPP;
+		dev_info_once(dev->dev,
+			      "KSZ87xx low-loss tuning is global, applied switch-wide\n");
+		ret = ksz87xx_apply_low_loss_preset(dev, !!val);
+		if (ret)
+			return ret;
+		break;
+	case PHY_REG_KSZ87XX_LPF_BW:
+		if (!ksz_is_ksz87xx(dev))
+			return -EOPNOTSUPP;
+		dev_info_once(dev->dev,
+			      "KSZ87xx low-loss tuning is global, applied switch-wide\n");
+		/* Only accept LPF bandwidth bits [7:6] */
+		if (val & ~KSZ87XX_PHY_LPF_MASK)
+			return -EINVAL;
+		ret = ksz8_ind_write8(dev, TABLE_LINK_MD, KSZ87XX_REG_PHY_LPF, (u8)val);
+		if (ret)
+			return ret;
+		dev->lpf_bw = val;
+		break;
+	case PHY_REG_KSZ87XX_EQ_INIT:
+		if (!ksz_is_ksz87xx(dev))
+			return -EOPNOTSUPP;
+		dev_info_once(dev->dev,
+			      "KSZ87xx low-loss tuning is global, applied switch-wide\n");
+		/* Only accept DSP EQ initial value bits [5:0] */
+		if (val & ~KSZ87XX_DSP_EQ_VALID_MASK)
+			return -EINVAL;
+		ret = ksz8_ind_write8(dev, TABLE_LINK_MD, KSZ87XX_REG_DSP_EQ, (u8)val);
+		if (ret)
+			return ret;
+		dev->eq_init = val;
+		break;
 	default:
 		break;
 	}
@@ -2070,6 +2155,10 @@ static int ksz8_setup(struct dsa_switch *ds)
 			return ret;
 	}
 
+	/* Initialize KSZ87xx short-cable preset control */
+	dev->eq_init = KSZ87XX_DSP_EQ_INIT_FACTORY;
+	dev->lpf_bw = KSZ87XX_PHY_LPF_90MHZ;
+
 	ret = ksz8_handle_global_errata(ds);
 	if (ret)
 		return ret;
diff --git a/drivers/net/dsa/microchip/ksz8_reg.h b/drivers/net/dsa/microchip/ksz8_reg.h
index 332408567b47..981ab441d9b7 100644
--- a/drivers/net/dsa/microchip/ksz8_reg.h
+++ b/drivers/net/dsa/microchip/ksz8_reg.h
@@ -202,6 +202,10 @@
 #define REG_PORT_3_STATUS_0		0x38
 #define REG_PORT_4_STATUS_0		0x48
 
+/* KSZ87xx LinkMD registers (TABLE_LINK_MD_V) */
+#define KSZ87XX_REG_DSP_EQ			0x08   /* DSP EQ initial value */
+#define KSZ87XX_REG_PHY_LPF			0x4C   /* RX LPF bandwidth */
+
 /* For KSZ8765. */
 #define PORT_REMOTE_ASYM_PAUSE		BIT(5)
 #define PORT_REMOTE_SYM_PAUSE		BIT(4)
@@ -342,7 +346,7 @@
 #define TABLE_EEE			(TABLE_EEE_V << TABLE_EXT_SELECT_S)
 #define TABLE_ACL			(TABLE_ACL_V << TABLE_EXT_SELECT_S)
 #define TABLE_PME			(TABLE_PME_V << TABLE_EXT_SELECT_S)
-#define TABLE_LINK_MD			(TABLE_LINK_MD << TABLE_EXT_SELECT_S)
+#define TABLE_LINK_MD			(TABLE_LINK_MD_V << TABLE_EXT_SELECT_S)
 #define TABLE_READ			BIT(4)
 #define TABLE_SELECT_S			2
 #define TABLE_STATIC_MAC_V		0
@@ -729,6 +733,23 @@
 #define PHY_POWER_SAVING_ENABLE		BIT(2)
 #define PHY_REMOTE_LOOPBACK		BIT(1)
 
+/* Vendor-specific Clause 22 PHY registers (virtualized) */
+#define PHY_REG_KSZ87XX_SHORT_CABLE		0x1A
+#define PHY_REG_KSZ87XX_LPF_BW			0x1B
+#define PHY_REG_KSZ87XX_EQ_INIT			0x1C
+
+/* LPF bandwidth bits [7:6]: 00 = 90MHz (default), 01 = 62MHz, 10 = 55MHz, 11 = 44MHz  */
+#define KSZ87XX_PHY_LPF_MASK     GENMASK(7, 6)
+#define KSZ87XX_PHY_LPF_90MHZ    FIELD_PREP(KSZ87XX_PHY_LPF_MASK, 0)
+#define KSZ87XX_PHY_LPF_62MHZ    FIELD_PREP(KSZ87XX_PHY_LPF_MASK, 1)
+#define KSZ87XX_PHY_LPF_55MHZ    FIELD_PREP(KSZ87XX_PHY_LPF_MASK, 2)
+#define KSZ87XX_PHY_LPF_44MHZ    FIELD_PREP(KSZ87XX_PHY_LPF_MASK, 3)
+
+/* Low-loss workaround DSP EQ INIT VALUE */
+#define KSZ87XX_DSP_EQ_VALID_MASK		GENMASK(5, 0)
+#define KSZ87XX_DSP_EQ_INIT_LOW_LOSS	0x00
+#define KSZ87XX_DSP_EQ_INIT_FACTORY		0x0F
+
 /* KSZ8463 specific registers. */
 #define P1MBCR				0x4C
 #define P1MBSR				0x4E
diff --git a/drivers/net/dsa/microchip/ksz_common.h b/drivers/net/dsa/microchip/ksz_common.h
index b67038cf1bd0..45613b9aeb1e 100644
--- a/drivers/net/dsa/microchip/ksz_common.h
+++ b/drivers/net/dsa/microchip/ksz_common.h
@@ -222,6 +222,10 @@ struct ksz_device {
 	 * the switch’s internal PHYs, bypassing the main SPI interface.
 	 */
 	struct mii_bus *parent_mdio_bus;
+
+	/* KSZ87xx low-loss tuning state */
+	u8 lpf_bw;		/* KSZ87XX_PHY_LPF_* */
+	u8 eq_init;		/* DSP EQ initial value */
 };
 
 /* List of supported models */