RCANFD_GCTR
rcar_canfd_write(gpriv->base, RCANFD_GCTR, 0);
rcar_canfd_update_bit(gpriv->base, RCANFD_GCTR, RCANFD_GCTR_GMDC_MASK,
rcar_canfd_set_bit(gpriv->base, RCANFD_GCTR, RCANFD_GCTR_GSLPR);
rcar_canfd_clear_bit(gpriv->base, RCANFD_GCTR, RCANFD_GCTR_GSLPR);
rcar_canfd_update_bit(gpriv->base, RCANFD_GCTR,
rcar_canfd_set_bit(gpriv->base, RCANFD_GCTR, ctr);