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According to the UFS spec, the bRefClkFreq attribute can only be written when both sub-links are in LS-MODE. However, in HS LSS mode with resetmode = HS_MODE, if the UFS device's default bRefClkFreq value differs from the host controller's dev_ref_clk_freq setting, the write operation will fail. To fix this issue, introduce ufshcd_get_op_mode() function to detect the current link operational mode. Call ufshcd_set_dev_ref_clk() only when both sub-links are in LS-MODE to ensure the attribute can be written successfully. Signed-off-by: Wang Shuaiwei <wangshuaiwei1@xiaomi.com> Link: https://patch.msgid.link/20260414033718.1459540-1-wangshuaiwei1@xiaomi.com Reviewed-by: Peter Wang <peter.wang@mediatek.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>