EDPRCR
edprcr = readl_relaxed(drvdata->base + EDPRCR);
writel_relaxed(edprcr, drvdata->base + EDPRCR);
edprcr = readl_relaxed(drvdata->base + EDPRCR);
writel_relaxed(edprcr, drvdata->base + EDPRCR);
save_edprcr = readl_relaxed(drvdata->base + EDPRCR);
writel_relaxed(save_edprcr, drvdata->base + EDPRCR);