[PATCH v4 0/2] Add regulator support to qcom-ufs driver

[Federico Amedeo Izzo via B4 Relay]

This series enables UFS support on SC7280 devices with UFS3.1.
SC7280 devices with UFS2.2 were already working.

The root cause was ABL leaving vcc-supply regulator disabled on UFS3.1
devices, and enabled on UFS2.2 devices that worked fine without
regulator support.

Signed-off-by: Federico Amedeo Izzo <federico at izzo.pro>
---
Changes in v4:
- Improve regulator mode fix: apply current mode during enable
- Remove regulator mode code from qcom-ufs driver
- Link to v3: https://patch.msgid.link/20260523-qcom-ufs-regulator-support-v3-0-1be2a80a2577@izzo.pro

Changes in v3:
- Fix bug causing HPM mode not being applied. Removed LPM/HPM hack
- Read regulator mode from dts property instead of hardcoding it
- Link to v2: https://patch.msgid.link/20260521-qcom-ufs-regulator-support-v2-1-d3ec82ae5dbc@izzo.pro

Changes in v2:
- Add vccq2-supply for UFS2.2 devices without internal eLDO regulator
- Fix wrong topic
- Link to v1: https://patch.msgid.link/20260521-dpu-add-dspp-gc-driver-v1-1-83372488cdcf@izzo.pro

To: Sumit Garg <sumit.garg at kernel.org>
To: u-boot-qcom at groups.io
To: u-boot at lists.denx.de
Cc: Jaehoon Chung <jh80.chung at samsung.com>
Cc: Peng Fan <peng.fan at nxp.com>
Cc: Casey Connolly <casey.connolly at linaro.org>
Cc: Neil Armstrong <neil.armstrong at linaro.org>
Cc: Tom Rini <trini at konsulko.com>
Cc: Luca Weiss <luca.weiss at fairphone.com>
Cc: Aswin Murugan <aswin.murugan at oss.qualcomm.com>
Cc: Federico Amedeo Izzo <federico at izzo.pro>
Cc: Bhupesh Sharma <bhupesh.linux at gmail.com>
Cc: Neha Malcom Francis <n-francis at ti.com>
Cc: Julien Stephan <jstephan at baylibre.com>
Cc: Marek Vasut <marek.vasut+renesas at mailbox.org>

---
Federico Amedeo Izzo (2):
      regulator: qcom-rpmh-regulator: fix regulator mode mismatch
      ufs: qcom: add ufs host regulator support

 drivers/power/regulator/qcom-rpmh-regulator.c | 106 ++++++++++++++------------
 drivers/ufs/ufs-qcom.c                        |  25 ++++++
 drivers/ufs/ufs-qcom.h                        |   4 +
 3 files changed, 85 insertions(+), 50 deletions(-)
---
base-commit: 744cf5d4e398c5f657e5c3eeb44d00fa5175dc85
change-id: 20260521-qcom-ufs-regulator-support-466ea6ad202a

Best regards,
--  
Federico Amedeo Izzo <federico at izzo.pro>