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

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Message-ID: <20250411121630.21330-1-quic_mapa@quicinc.com>
Date: Fri, 11 Apr 2025 17:46:28 +0530
From: Manish Pandey <quic_mapa@...cinc.com>
To: "James E.J. Bottomley" <James.Bottomley@...senPartnership.com>,
        "Martin K.
 Petersen" <martin.petersen@...cle.com>,
        Manivannan Sadhasivam
	<manivannan.sadhasivam@...aro.org>
CC: 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: [PATCH V3 0/2] scsi: ufs: Implement Quirks for Samsung UFS Devices

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.
---
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