Hi folks,
This series provides a few cleanups, bug fixes and feature enhancements for
the ufs-exynos driver, particularly for gs101 SoC.
Regarding cleanup we remove some unused phy attribute data that isn't
required when EXYNOS_UFS_OPT_SKIP_CONFIG_PHY_ATTR is not set.
Regarding bug fixes the check for EXYNOS_UFS_OPT_UFSPR_SECURE is moved
inside exynos_ufs_config_smu() which fixes a Serror in the resume path
for gs101.
Regarding feature enhancements:
* Gear 4 is enabled which has higher speeds and better power management.
* WriteBooster capability is enabled for gs101 which increases write
performance.
* Clock gating and hibern8 capabilities are enabled for gs101. This leads
to a significantly cooler phone when running the upstream kernel on
Pixel 6. Approximately 10 degrees cooler after 20 minutes at a shell
prompt.
* AXI bus on gs101 is correctly configured for write line unique transactions
* ACG is set to be controlled by UFS_ACG_DISABLE for gs101
Additionally in v3 I've added 2 minor cleanup patches from Tudor and also
an update to MAINTAINERS to add myself as a reviewer and the linux-samsung-soc
list.
Note: In v1 I mentioned the phy hibern8 series in [1] that is still under
discussion however further testing reveals hibern8 feature still works without
the additional UFS phy register writes done in [1]. So this series can be merged
as is and has no runtime dependencies on [1] to be functional.
[1] https://lore.kernel.org/linux-arm-kernel/20241002201555.3332138-3-peter.griffin@linaro.org/T/
regards,
Peter
Changes since v1:
- Remove superfluous struct device parameter to exynos_ufs_shareability() (Peter)
- Add patches 8-11 (hibern8 fixes, WLU support etc)
Changes since v2:
- Add 2 cleanup patches from Tudor to the series and rebase (Tudor)
- Fixup various commit messages as per Tudors review feedback (Tudor)
- Collect up reviewed-by tags, and CC stable where appropriate (Peter)
- Add myself as a reviewer in MAINTAINERS for ufs-exynos driver
and add linux-samsung-soc list. (Peter)
- Added blank line and split hs_tx_gear/hs_rx_gear into separate lines (Tudor)
Peter Griffin (12):
scsi: ufs: exynos: Allow UFS Gear 4
scsi: ufs: exynos: add check inside exynos_ufs_config_smu()
scsi: ufs: exynos: gs101: remove EXYNOS_UFS_OPT_BROKEN_AUTO_CLK_CTRL
scsi: ufs: exynos: Add EXYNOS_UFS_OPT_SKIP_CONFIG_PHY_ATTR check
scsi: ufs: exynos: gs101: remove unused phy attribute fields
scsi: ufs: exynos: remove tx_dif_p_nsec from exynosauto_ufs_drv_init()
scsi: ufs: exynos: add gs101_ufs_drv_init() hook and enable
WriteBooster
scsi: ufs: exynos: enable write line unique transactions on gs101
scsi: ufs: exynos: set ACG to be controlled by UFS_ACG_DISABLE
scsi: ufs: exynos: fix hibern8 notify callbacks
scsi: ufs: exynos: gs101: enable clock gating with hibern8
MAINTAINERS: Update UFS Exynos entry
Tudor Ambarus (2):
scsi: ufs: exynos: remove empty drv_init method
scsi: ufs: exynos: remove superfluous function parameter
MAINTAINERS | 2 +
drivers/ufs/host/ufs-exynos.c | 136 ++++++++++++++++++----------------
drivers/ufs/host/ufs-exynos.h | 2 +-
3 files changed, 76 insertions(+), 64 deletions(-)
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2.47.0.163.g1226f6d8fa-goog