This series brings up UFS on the Sony Xperia "Yoshino" (MSM8998) and
"Tama" (SDM845) families.
The work falls into four layers:
1. A small refactor that extends ufs_dev_desc with the product revision
string and the UFS spec version (patch 1). No behaviour change.
2. A device-quirk infrastructure (patches 2-4) that lets us match
per-device link / power-mode workarounds against manufacturer id,
model and fw revision:
- patch 2: generic ufs_fixups[] table and ufshcd_fixup_dev_quirks(),
called from ufs_start() before power-mode negotiation
- patch 3: UFS_DEVICE_QUIRK_EXTEND_SYNC_LENGTH for SK Hynix devices
that need PA_TxHsG{1,2,3}SyncLength programmed to 0x48
- patch 4: CONFIG_UFS_RESTRICT_TX_LANES build-time knob for boards
with only a single reliable TX lane. Defaults to N so nothing
else is affected.
3. The NO_PURGE quirk for devices that brick if issued PURGE / UNMAP
(patches 5-7):
- patch 5: refuse erase/UNMAP in the SCSI uclass when NO_PURGE
is set on the underlying UFS device
- patch 6: print device identification (vendor / model / rev /
spec version) at probe so quirk matching is observable on the
console
- patch 7: a platform gate that auto-enables NO_PURGE on Sony
Yoshino/Tama compatibles because per-UFS-chip rows can't see
blank string descriptors on some affected boards.
4. Akatsuki DTS enablement (patch 8): re-enable the UFS controller node.
Background on NO_PURGE: on the affected Sony platforms the SCSI ERASE /
UNMAP / WRITE_BUFFER PURGE operation overwrites the bootloader region
and permanently bricks the device.
Based on the linux patches by Angelo:
https://github.com/kholk/kernel/commit/2e7a9ee1c91a016baa0b826a7752ec45663a0561
Tested on Sony XZ3 (akatsuki, SDM845) where U-Boot enumerates UFS LUN0
and exposes the GPT.
```
UFS Device Information (ufshc@1d84000)
Manufacturer: Samsung (0x01ce)
Model: (unset)
Revision: (unset)
Spec Version: 0x0210
Gear - RX: 3, TX: 3
Lane - RX: 2, TX: 2
Power - RX: 1, TX: 1, HS rate: 2
Device Quirks: 0x00000001
NO_PURGE Quirk: Yes
...
=> scsi erase 0 1
scsi erase: device 0 block # 0, count 1 ... scsi_erase: erase not supported on
this device
0 blocks erased: ERROR
=>
```
Signed-off-by: Petr Hodina <[email protected]>
---
Petr Hodina (8):
ufs: read product revision and spec version into ufs_dev_desc
ufs: add device-quirk infrastructure
ufs: program extended HS sync length for SK Hynix devices
ufs: add CONFIG_UFS_RESTRICT_TX_LANES
scsi: ufs: refuse erase/UNMAP on NO_PURGE devices
ufs: print device information at probe
ufs: gate NO_PURGE on Sony Yoshino/Tama platform compatible
arm: dts: qcom: akatsuki: re-enable the UFS controller node
MAINTAINERS | 1 +
.../sdm845-sony-xperia-tama-akatsuki-u-boot.dtsi | 9 +
drivers/scsi/scsi.c | 5 +
drivers/ufs/Kconfig | 14 ++
drivers/ufs/ufs-uclass.c | 197 +++++++++++++++++++++
drivers/ufs/ufs.h | 7 +
drivers/ufs/ufs_quirks.h | 94 ++++++++++
drivers/ufs/unipro.h | 3 +
include/scsi.h | 5 +
9 files changed, 335 insertions(+)
---
base-commit: ece349ade2973e220f524ce59e59711cc919263f
change-id: 20260611-b4-ufs-sony-794325f6f4af
Best regards,
--
Petr Hodina <[email protected]>
