From: Palash Kambar <palash.kambar@oss.qualcomm.com>

This patch series introduces two updates to the UFS subsystem aimed at
improving link stability and power efficiency on platforms using the
Qualcomm UFS host controller.

During link startup, the number of connected TX/RX lanes discovered may be
fewer than the lanes specified in the device tree. The current UFS core
driver configures all DT-defined lanes unconditionally, which can lead to
mismatches during power mode changes. Patch 1/2 ensures to fail on this.

Additionally, certain Qualcomm platforms support Auto Hibern8 (AH8), where
the UFS controller autonomously de-asserts clk_req signals to the GCC
during Hibern8 state. Enabling this mechanism allows the clock controller
to gate unused clocks, providing meaningful power savings. Patch 2/2 adds
support for enabling this feature as recommended by the Hardware
Programming Guidelines.

---
changes from V1
1) Addressed Shawn Lin's comments to fix comment to connected lanes.
2) Addressed Bart's comments to remove warning and trigger failure
   incase of lane mismatch.

changes from V2:
1) Addressed Shawn's comments to fix commit text.
2) Addressed Bart's comments to remove variable initializations and
   indentation fix.

changes from V3:
1) Addressed Manivannan's comments to remove extra comment and return
   logic.

changes from V4:
1) Addressed Manivannan's comments to fix indentation and return
   handling.

changes from V5:
1) Addressed Manivannan's comment and added back the missed tags from 
   V3.

Palash Kambar (2):
  ufs: core: Configure only active lanes during link
  ufs: ufs-qcom: Enable Auto Hibern8 clock request support

 drivers/ufs/core/ufshcd.c   | 35 +++++++++++++++++++++++++++++++++++
 drivers/ufs/host/ufs-qcom.c | 10 ++++++++++
 drivers/ufs/host/ufs-qcom.h | 11 +++++++++++
 3 files changed, 56 insertions(+)

-- 
2.34.1