MVNETA_GMAC_CTRL_2
u32 new_ctrl2, gmac_ctrl2 = mvreg_read(pp, MVNETA_GMAC_CTRL_2);
mvreg_write(pp, MVNETA_GMAC_CTRL_2, new_ctrl2);
while ((mvreg_read(pp, MVNETA_GMAC_CTRL_2) &