CLK_SOURCE_EMC_2X_CLK_SRC_SHIFT
index = val >> CLK_SOURCE_EMC_2X_CLK_SRC_SHIFT;
val |= index << CLK_SOURCE_EMC_2X_CLK_SRC_SHIFT;
return readl_relaxed(emc->reg) >> CLK_SOURCE_EMC_2X_CLK_SRC_SHIFT;
val |= index << CLK_SOURCE_EMC_2X_CLK_SRC_SHIFT;