scsi: ufs: core: Enable multi-level gear scaling

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With OPP V2 enabled, devfreq can scale clocks amongst multiple frequency
plans. However, the gear speed is only toggled between min and max during
clock scaling. Enable multi-level gear scaling by mapping clock frequencies
to gear speeds, so that when devfreq scales clock frequencies we can put
the UFS link at the appropriate gear speeds accordingly.

Signed-off-by: Can Guo <quic_cang@quicinc.com>
Co-developed-by: Ziqi Chen <quic_ziqichen@quicinc.com>
Signed-off-by: Ziqi Chen <quic_ziqichen@quicinc.com>
Link: https://lore.kernel.org/r/20250213080008.2984807-6-quic_ziqichen@quicinc.com
Reviewed-by: Bean Huo <beanhuo@micron.com>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Tested-by: Neil Armstrong <neil.armstrong@linaro.org>
Reviewed-by: Peter Wang <peter.wang@mediatek.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

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Can Guo 2025-02-13 16:00:05 +08:00 • committed by Martin K. Petersen

parent c02fe9e222

commit 129b44c27c

1 changed files with 34 additions and 10 deletions

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drivers/ufs/core/ufshcd.c

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