S626_P_ACON1
writel(S626_ACON1_ADCSTART, dev->mmio + S626_P_ACON1);
writel(S626_ACON1_DACSTART, dev->mmio + S626_P_ACON1);
writel(S626_ACON1_BASE, dev->mmio + S626_P_ACON1);