[PATCH v4 0/3] Qualcomm UFS device reset support
From: Bjorn Andersson
Date: Wed Aug 28 2019 - 15:18:06 EST
This series adds a new ufs vops to allow platform specific methods for
resetting an attached UFS device, then implements this for the Qualcomm driver.
This reset seems to be necessary for the majority of Dragonboard845c devices.
Bean requested in v3 that a software fallback mechanism, using
UIC_CMD_DME_END_PT_RST. I have not been successful in validating that this
works for me, so I'm postponing this effort and hoping we can add it
incrementally at a later time.
Bjorn Andersson (3):
scsi: ufs: Introduce vops for resetting device
scsi: ufs-qcom: Implement device_reset vops
arm64: dts: qcom: sdm845: Specify UFS device-reset GPIO
.../devicetree/bindings/ufs/ufshcd-pltfrm.txt | 2 ++
arch/arm64/boot/dts/qcom/sdm845-db845c.dts | 2 ++
arch/arm64/boot/dts/qcom/sdm845-mtp.dts | 2 ++
drivers/scsi/ufs/ufs-qcom.c | 36 +++++++++++++++++++
drivers/scsi/ufs/ufs-qcom.h | 4 +++
drivers/scsi/ufs/ufshcd.c | 6 ++++
drivers/scsi/ufs/ufshcd.h | 8 +++++
7 files changed, 60 insertions(+)