DC_FETCHUNIT_FRAC0
for (i = DC_FETCHUNIT_FRAC0; i < DC_FETCHUNIT_FRAC_NUM; i++) {
fu_ops->set_src_stride(fu, DC_FETCHUNIT_FRAC0, fb->pitches[0]);
fu_ops->set_src_buf_dimensions(fu, DC_FETCHUNIT_FRAC0, src_w, src_h);
fu_ops->set_fmt(fu, DC_FETCHUNIT_FRAC0, fb->format);
fu_ops->set_baseaddress(fu, DC_FETCHUNIT_FRAC0, baseaddr);
fu_ops->enable_src_buf(fu, DC_FETCHUNIT_FRAC0);
fu_ops->disable_src_buf(dplane->fu, DC_FETCHUNIT_FRAC0);