rk3288 lcdc: backup mmu reg when use iommu

diff --git a/drivers/video/rockchip/lcdc/rk3288_lcdc.c b/drivers/video/rockchip/lcdc/rk3288_lcdc.c
index 9ef386145ce529aee4b3f5f11e787e32f9524937..627d5d2ffbd1691239cc43998e9daf2975073a12 100755 (executable)
--- a/drivers/video/rockchip/lcdc/rk3288_lcdc.c
+++ b/drivers/video/rockchip/lcdc/rk3288_lcdc.c
@@ -223,7 +223,11 @@ static int rk3288_lcdc_pre_init(struct rk_lcdc_driver *dev_drv)
        rk3288_lcdc_clk_enable(lcdc_dev);
 
        /*backup reg config at uboot*/
-       for (i = 0; i < 0x1a0;) {
+#ifdef CONFIG_ROCKCHIP_IOMMU
+               for (i = 0; i < 0x330;) {
+#else
+               for (i = 0; i < 0x1a0;) {
+#endif
                lcdc_readl(lcdc_dev,i);
                i += 4;
        }