DMA_OV1
setup_frame_dma(ofb->fbi, DMA_OV1, PAL_NONE, start, size);
uint32_t fdadr1 = ofb->fbi->fdadr[DMA_OV1] | (enabled ? 0x1 : 0);
lcd_writel(ofb->fbi, FBR1, ofb->fbi->fdadr[DMA_OV1] | 0x3);