Merge patch series "UFS cleanups and enhancements to ufs-exynos for gs101"

Peter Griffin <[email protected]> says:

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/[email protected]/T/

regards,

Peter

Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Martin K. Petersen <[email protected]>

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