MACON2
encx24j600_set_bits(priv, MACON2, FULDPX);
encx24j600_clr_bits(priv, MACON2, FULDPX);
pr_info(DRV_NAME " MACON2: %04X\n", encx24j600_read_reg(priv, MACON2));
encx24j600_set_bits(priv, MACON2, macon2);