linux-kernel - Re: [PATCH v3 00/11] Enable HS-G5 support on SM8550

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Date:   Wed, 22 Nov 2023 10:17:17 -0600
From:   Andrew Halaney <ahalaney@...hat.com>
To:     Can Guo <quic_cang@...cinc.com>
Cc:     bvanassche@....org, mani@...nel.org, stanley.chu@...iatek.com,
        adrian.hunter@...el.com, beanhuo@...ron.com, avri.altman@....com,
        junwoo80.lee@...sung.com, martin.petersen@...cle.com,
        Matthias Brugger <matthias.bgg@...il.com>,
        AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>,
        "open list:ARM/Mediatek SoC support" <linux-kernel@...r.kernel.org>,
        "moderated list:ARM/Mediatek SoC support" 
        <linux-arm-kernel@...ts.infradead.org>,
        "moderated list:ARM/Mediatek SoC support" 
        <linux-mediatek@...ts.infradead.org>
Subject: Re: [PATCH v3 00/11] Enable HS-G5 support on SM8550

On Tue, Nov 21, 2023 at 11:10:31PM -0800, Can Guo wrote:
> This series enables HS-G5 support on SM8550.
> 
> This series is rebased on below changes from Mani -
> https://patchwork.kernel.org/project/linux-scsi/patch/20230908145329.154024-1-manivannan.sadhasivam@linaro.org/
> https://patchwork.kernel.org/project/linux-scsi/patch/20230908145329.154024-2-manivannan.sadhasivam@linaro.org/
> 
> This series is tested on below HW combinations -
> SM8550 MTP + UFS4.0
> SM8550 QRD + UFS3.1
> SM8450 MTP + UFS3.1 (for regression test)
> SM8350 MTP + UFS3.1 (for regression test)
> 
> Note that during reboot test on above platforms, I occasinally hit PA (PHY)
> error during the 2nd init, this is not related with this series. A fix for
> this is mentioned in below patchwork -
> 
> https://patchwork.kernel.org/project/linux-scsi/patch/1698145815-17396-1-git-send-email-quic_ziqichen@quicinc.com/
> 
> Also note that on platforms, which have two sets of UFS PHY settings are
> provided (say G4 and no-G4, G5 and no-G5). The two sets of PHY settings are
> basically programming different values to different registers, mixing the
> two sets and/or overwriting one set with another set is definitely not
> blessed by UFS PHY designers. For SM8550, this series will make sure we
> honor the rule. However, for old targets Mani and I will fix them in
> another series in future.
> 
> v2 -> v3:
> 1. Addressed comments from Andrew, Mani and Bart in patch #1
> 2. Added patch #2 as per request from Andrew and Mani
> 3. Added patch #4 to fix a common issue on old targets, it is not necessary
>    for this series, but put in this series only because it would be easier
>    to maintain and no need to rebase
> 4. Addressed comments from Dmitry and Mani in patches to phy-qcom-qmp-ufs.c
> 
> v1 -> v2:
> 1. Removed 2 changes which were exposing power info in sysfs
> 2. Removed 1 change which was moving data structs to phy-qcom-qmp-ufs.h
> 3. Added one new change (the 1st one) to clean up usage of ufs_dev_params based on comments from Mani
> 4. Adjusted the logic of UFS device version detection according to comments from Mani:
> 	4.1 For HW version < 0x5, go through dual init
>  	4.2 For HW version >= 0x5
> 		a. If UFS device version is populated, one init is required
> 		b. If UFS device version is not populated, go through dual init

The cover letter didn't include linux-arm-msm@...r.kernel.org, which
made me have to go searching for this on lore to see what had changed
in the rest of the series I received as a member of that mailing list.

Going forward please try and include that mailing list!

> 
> Bao D. Nguyen (1):
>   scsi: ufs: ufs-qcom: Add support for UFS device version detection
> 
> Can Guo (10):
>   scsi: ufs: host: Rename structure ufs_dev_params to ufs_host_params
>   scsi: ufs: ufs-qcom: No need to set hs_rate after
>     ufshcd_init_host_param()
>   scsi: ufs: ufs-qcom: Setup host power mode during init
>   scsi: ufs: ufs-qcom: Limit negotiated gear to selected PHY gear
>   scsi: ufs: ufs-qcom: Allow the first init start with the maximum
>     supported gear
>   scsi: ufs: ufs-qcom: Limit HS-G5 Rate-A to hosts with HW version 5
>   scsi: ufs: ufs-qcom: Set initial PHY gear to max HS gear for HW ver 5
>     and newer
>   phy: qualcomm: phy-qcom-qmp-ufs: Rectify SM8550 UFS HS-G4 PHY Settings
>   phy: qualcomm: phy-qcom-qmp-ufs: Use tbls_hs_max instead of tbls_hs_g4
>   phy: qualcomm: phy-qcom-qmp-ufs: Add High Speed Gear 5 support for
>     SM8550
> 
>  drivers/phy/qualcomm/phy-qcom-qmp-pcs-ufs-v6.h     |   2 +
>  drivers/phy/qualcomm/phy-qcom-qmp-qserdes-com-v6.h |   2 +
>  .../qualcomm/phy-qcom-qmp-qserdes-txrx-ufs-v6.h    |  12 ++
>  drivers/phy/qualcomm/phy-qcom-qmp-ufs.c            | 171 ++++++++++++++++-----
>  drivers/ufs/host/ufs-exynos.c                      |   7 +-
>  drivers/ufs/host/ufs-hisi.c                        |  11 +-
>  drivers/ufs/host/ufs-mediatek.c                    |  12 +-
>  drivers/ufs/host/ufs-qcom.c                        |  92 ++++++++---
>  drivers/ufs/host/ufs-qcom.h                        |   5 +-
>  drivers/ufs/host/ufshcd-pltfrm.c                   |  69 ++++-----
>  drivers/ufs/host/ufshcd-pltfrm.h                   |  10 +-
>  11 files changed, 275 insertions(+), 118 deletions(-)
> 
> -- 
> 2.7.4
> 
> 
> _______________________________________________
> linux-arm-kernel mailing list
> linux-arm-kernel@...ts.infradead.org
> http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

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