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	val = SUNXI_LCDC_TCON0_IO_POL_DCLK_PHASE(CONFIG_VIDEO_LCD_DCLK_PHASE);
	if (!(mode->sync & FB_SYNC_HOR_HIGH_ACT))
		val |= SUNXI_LCDC_TCON_HSYNC_MASK;
	if (!(mode->sync & FB_SYNC_VERT_HIGH_ACT))
		val |= SUNXI_LCDC_TCON_VSYNC_MASK;

#ifdef CONFIG_VIDEO_VGA_VIA_LCD_FORCE_SYNC_ACTIVE_HIGH
	if (for_ext_vga_dac)
		val = 0;
#endif
	writel(val, &lcdc->tcon0_io_polarity);

	writel(0, &lcdc->tcon0_io_tristate);