linux-kernel - Re: [PATCH v2 0/3] scsi: ufs: qcom: Suspend fixes

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Message-ID: <145dd6ae-be08-4f19-9e9d-abc238b35b8c@linaro.org>
Date: Thu, 19 Dec 2024 16:26:24 +0100
From: Neil Armstrong <neil.armstrong@...aro.org>
To: manivannan.sadhasivam@...aro.org, Alim Akhtar <alim.akhtar@...sung.com>,
 Avri Altman <avri.altman@....com>, Bart Van Assche <bvanassche@....org>,
 "James E.J. Bottomley" <James.Bottomley@...senPartnership.com>,
 "Martin K. Petersen" <martin.petersen@...cle.com>,
 Abel Vesa <abel.vesa@...aro.org>, Bjorn Andersson <andersson@...nel.org>,
 Konrad Dybcio <konradybcio@...nel.org>
Cc: linux-scsi@...r.kernel.org, linux-kernel@...r.kernel.org,
 linux-arm-msm@...r.kernel.org, Amit Pundir <amit.pundir@...aro.org>,
 Nitin Rawat <quic_nitirawa@...cinc.com>, stable@...r.kernel.org,
 Ram Kumar Dwivedi <quic_rdwivedi@...cinc.com>
Subject: Re: [PATCH v2 0/3] scsi: ufs: qcom: Suspend fixes

On 13/12/2024 14:53, Manivannan Sadhasivam via B4 Relay wrote:
> Hi,
> 
> This series fixes the several suspend issues on Qcom platforms. Patch 1 fixes
> the resume failure with spm_lvl=5 suspend on most of the Qcom platforms. For
> this patch, I couldn't figure out the exact commit that caused the issue. So I
> used the commit that introduced reinit support as a placeholder.
> 
> Patch 3 fixes the suspend issue on SM8550 and SM8650 platforms where UFS
> PHY retention is not supported. Hence the default spm_lvl=3 suspend fails. So
> this patch configures spm_lvl=5 as the default suspend level to force UFSHC/
> device powerdown during suspend. This supersedes the previous series [1] that
> tried to fix the issue in clock drivers.
> 
> This series is tested on Qcom SM8550 MTP and Qcom RB5 boards.
> 
> [1] https://lore.kernel.org/linux-arm-msm/20241107-ufs-clk-fix-v1-0-6032ff22a052@linaro.org
> 
> Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
> ---
> Changes in v2:
> - Changed 'ufs_qcom_drvdata::quirks' type to 'enum ufshcd_quirks'
> - Collected tags
> - Link to v1: https://lore.kernel.org/r/20241211-ufs-qcom-suspend-fix-v1-0-83ebbde76b1c@linaro.org
> 
> ---
> Manivannan Sadhasivam (3):
>        scsi: ufs: qcom: Power off the PHY if it was already powered on in ufs_qcom_power_up_sequence()
>        scsi: ufs: qcom: Allow passing platform specific OF data
>        scsi: ufs: qcom: Power down the controller/device during system suspend for SM8550/SM8650 SoCs
> 
>   drivers/ufs/core/ufshcd-priv.h |  6 ------
>   drivers/ufs/core/ufshcd.c      |  1 -
>   drivers/ufs/host/ufs-qcom.c    | 31 +++++++++++++++++++------------
>   drivers/ufs/host/ufs-qcom.h    |  5 +++++
>   include/ufs/ufshcd.h           |  2 --
>   5 files changed, 24 insertions(+), 21 deletions(-)
> ---
> base-commit: 40384c840ea1944d7c5a392e8975ed088ecf0b37
> change-id: 20241211-ufs-qcom-suspend-fix-5618e9c56d93
> 
> Best regards,

Tested-by: Neil Armstrong <neil.armstrong@...aro.org> # on SM8550-QRD
Tested-by: Neil Armstrong <neil.armstrong@...aro.org> # on SM8650-QRD