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scsi: ufs: qcom: Avoid re-init quirk when gears match
On sa8775p-ride, probing the HBA will go through the UFSHCD_QUIRK_REINIT_AFTER_MAX_GEAR_SWITCH path although the power info is the same during the second init. The REINIT quirk only applies starting with controller v4. For these, ufs_qcom_get_hs_gear() reads the highest supported gear when setting the host_params. After the negotiation, if the host and device are on the same gear, it is the highest gear supported between the two. Skip REINIT to save some time. Signed-off-by: Eric Chanudet <echanude@redhat.com> Link: https://lore.kernel.org/r/20240123192854.1724905-4-echanude@redhat.com Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> Tested-by: Andrew Halaney <ahalaney@redhat.com> # sa8775p-ride Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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1 changed files with 11 additions and 2 deletions
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@ -738,8 +738,17 @@ static int ufs_qcom_pwr_change_notify(struct ufs_hba *hba,
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* the second init can program the optimal PHY settings. This allows one to start
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* the first init with either the minimum or the maximum support gear.
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*/
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if (hba->ufshcd_state == UFSHCD_STATE_RESET)
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if (hba->ufshcd_state == UFSHCD_STATE_RESET) {
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/*
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* Skip REINIT if the negotiated gear matches with the
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* initial phy_gear. Otherwise, update the phy_gear to
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* program the optimal gear setting during REINIT.
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*/
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if (host->phy_gear == dev_req_params->gear_tx)
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hba->quirks &= ~UFSHCD_QUIRK_REINIT_AFTER_MAX_GEAR_SWITCH;
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else
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host->phy_gear = dev_req_params->gear_tx;
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}
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/* enable the device ref clock before changing to HS mode */
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if (!ufshcd_is_hs_mode(&hba->pwr_info) &&
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