CLK_OUT_ENB_Y
writel_relaxed(TEGRA210_CLK_ENB_VLD_MSK_Y, clk_base + CLK_OUT_ENB_Y);
val = readl_relaxed(clk_base + CLK_OUT_ENB_Y);
writel_relaxed(val, clk_base + CLK_OUT_ENB_Y);
.enb_reg = CLK_OUT_ENB_Y,