e4199f6cf9
When this "qcom,uses_level_shifter" DT entry is present but "qcom,external-fb-clk" is not present, the SD card's HS50 mode is run at 37.5MHz clock. This is to work around a latency issue caused by the addition of the Level Shifter logic. In order to use the 50MHz clock in HS50 mode, there are two ways: - Keep "qcom,uses_level_shifter" and "qcom,external-fb-clk" and make sure the Feedback Clock (FB CLK) connection between the Level Shifter and the MSM must be good. - Remove "qcom,uses_level_shifter" from DT. Please note that the "qcom,external-fb-clk" depends on "qcom,uses_level_shifter", only set "qcom,external-fb-clk" would not take effect. Change-Id: Ib3a4cf5c9c20e2094556c3196d91b7e9723e0a1e Signed-off-by: Ziqi Chen <quic_ziqichen@quicinc.com>