MDIO_MMD_PCS_MV_LED_FUNC_CTRL_LED_1_MASK
MDIO_MMD_PCS_MV_LED_FUNC_CTRL_LED_1_MASK,
FIELD_PREP(MDIO_MMD_PCS_MV_LED_FUNC_CTRL_LED_1_MASK,
val = FIELD_GET(MDIO_MMD_PCS_MV_LED_FUNC_CTRL_LED_1_MASK, val);