PLLU_HW_PWRDN_CFG0
reg = readl_relaxed(clk_base + PLLU_HW_PWRDN_CFG0);
writel_relaxed(reg, clk_base + PLLU_HW_PWRDN_CFG0);
reg = readl_relaxed(clk_base + PLLU_HW_PWRDN_CFG0);
writel_relaxed(reg, clk_base + PLLU_HW_PWRDN_CFG0);