CHNL_MEM_RD_CTRL
MXC_ISI_DEBUG_REG(CHNL_MEM_RD_CTRL),
mxc_isi_write(pipe, CHNL_MEM_RD_CTRL,
val = mxc_isi_read(pipe, CHNL_MEM_RD_CTRL);
mxc_isi_write(pipe, CHNL_MEM_RD_CTRL, val);
mxc_isi_write(pipe, CHNL_MEM_RD_CTRL, val);