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Commit fd915c67 authored by Nitin Rawat's avatar Nitin Rawat Committed by Martin K. Petersen
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scsi: ufs: qcom: Configure SYS1CLK_1US_REG for UFS V4 and above



SYS1CLK_1US represents the required number of system 1-clock cycles for one
microsecond. UFS Host Controller V4.0 and above mandates to write
SYS1CLK_1US_REG register and also these timer configuration needs to be
called from clk scaling pre ops as per HPG.

Refactor ufs_qcom_cfg_timers and add the below code support to align
with HPG.

a)Configure SYS1CLK_1US_REG for UFS V4 and above.
b)Introduce a new argument is_pre_scale_up for ufs_qcom_cfg_timers
to configure SYS1CLK_1US for max freq during prescale and link startup
condition.
c)Move ufs_qcom_cfg_timers from clk scaling post change ops
to clk scaling pre change ops.

Co-developed-by: default avatarNaveen Kumar Goud Arepalli <quic_narepall@quicinc.com>
Signed-off-by: default avatarNaveen Kumar Goud Arepalli <quic_narepall@quicinc.com>
Signed-off-by: default avatarNitin Rawat <quic_nitirawa@quicinc.com>
Link: https://lore.kernel.org/r/20230905052400.13935-6-quic_nitirawa@quicinc.com


Reviewed-by: default avatarCan Guo <quic_cang@quicinc.com>
Signed-off-by: default avatarMartin K. Petersen <martin.petersen@oracle.com>
parent 3091181b
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