Re: [PATCH net-next] net: phy: microchip_t1: add cable test support for lan87xx phy

+/* MISC Control 1 Register */
+#define LAN87XX_CTRL_1                          (0x11)
+#define LAN87XX_MASK_RGMII_TXC_DLY_EN           (0x4000)
+#define LAN87XX_MASK_RGMII_RXC_DLY_EN           (0x2000)

Interesting to know, but not used in this patch.

Please can you write a patch to actually make use of these bits, and
do the right thing when phydev->interface is one of the four
PHY_INTERFACE_MODE_RGMII values.

	 Andrew