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743e1f596c
During host driver init, the phy_gear is set to the minimum supported gear (HS_G2). Then, during the first power mode change, the negotiated gear, say HS-G4, is updated to the phy_gear variable so that in the second init the updated phy_gear can be used to program the PHY. But the current code only allows update the phy_gear to a higher value. If one wants to start the first init with the maximum support gear, say HS-G4, the phy_gear is not updated to HS-G3 if the device only supports HS-G3. The original check added there is intend to make sure the phy_gear won't be updated when gear is scaled down (during clock scaling). Update the check so that one can start the first init with the maximum support gear without breaking the original fix by checking the ufshcd_state, that is, allow update to phy_gear only if power mode change is invoked from ufshcd_probe_hba(). Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> Reviewed-by: Nitin Rawat <quic_nitirawa@quicinc.com> Signed-off-by: Can Guo <quic_cang@quicinc.com> Link: https://lore.kernel.org/r/1701520577-31163-5-git-send-email-quic_cang@quicinc.com Tested-by: Neil Armstrong <neil.armstrong@linaro.org> # on SM8550-QRD Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> |
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Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.