QUP_SW_RESET
writel(1, qup->base + QUP_SW_RESET);
writel(1, qup->base + QUP_SW_RESET);
writel(1, qup->base + QUP_SW_RESET);
writel(1, qup->base + QUP_SW_RESET);
writel_relaxed(1, base + QUP_SW_RESET);