linux-kernel - Re: [PATCH V3 0/2] scsi: ufs: Implement Quirks for Samsung UFS Devices

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Message-ID: <nziy3xvvduxeeav7umyvorguctatt7kw3tt6bvuvgwwn6knhbd@2nrs5wb5b2vb>
Date: Fri, 11 Apr 2025 22:51:13 +0530
From: Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
To: Manish Pandey <quic_mapa@...cinc.com>
Cc: "James E.J. Bottomley" <James.Bottomley@...senpartnership.com>, 
	"Martin K. Petersen" <martin.petersen@...cle.com>, Alim Akhtar <alim.akhtar@...sung.com>, 
	Avri Altman <avri.altman@....com>, Bart Van Assche <bvanassche@....org>, linux-scsi@...r.kernel.org, 
	linux-kernel@...r.kernel.org, linux-arm-msm@...r.kernel.org, quic_nitirawa@...cinc.com, 
	quic_bhaskarv@...cinc.com, quic_rampraka@...cinc.com, quic_cang@...cinc.com, 
	quic_nguyenb@...cinc.com
Subject: Re: [PATCH V3 0/2] scsi: ufs: Implement Quirks for Samsung UFS
 Devices

On Fri, Apr 11, 2025 at 05:46:28PM +0530, Manish Pandey wrote:
> Introduce quirks for Samsung UFS devices to modify the PA TX HSG1 sync
> length and TX_HS_EQUALIZER settings on the Qualcomm UFS Host controller.
> 
> Additionally, Samsung UFS devices require extra time in hibern8 mode
> before exiting, beyond the standard handshaking phase between the host
> and device. Introduce a quirk to increase the PA_HIBERN8TIME parameter
> by 100 µs to ensure a proper hibernation process.

Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>

- Mani

> ---
> Changes in V3
> - Addressed Mani's comment and updated commit message.
> - used BIT macro in ufs-qcom.h to define quirks.
> Changes in V2
> - Split patches to add PA_HIBERN8TIME quirk in ufshcd.c
> 
> ---
> Manish Pandey (2):
>   ufs: qcom: Add quirks for Samsung UFS devices
>   scsi: ufs: introduce quirk to extend PA_HIBERN8TIME for UFS devices
> 
>  drivers/ufs/core/ufshcd.c   | 29 +++++++++++++++++++++++++
>  drivers/ufs/host/ufs-qcom.c | 43 +++++++++++++++++++++++++++++++++++++
>  drivers/ufs/host/ufs-qcom.h | 18 ++++++++++++++++
>  include/ufs/ufs_quirks.h    |  6 ++++++
>  4 files changed, 96 insertions(+)
> 
> -- 
> 2.17.1
> 

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