REG_UFS_REFCLK_CTRL
ufshcd_writel(hba, REFCLK_REQUEST, REG_UFS_REFCLK_CTRL);
ufshcd_writel(hba, REFCLK_RELEASE, REG_UFS_REFCLK_CTRL);
value = ufshcd_readl(hba, REG_UFS_REFCLK_CTRL);