[PATCH 0/4] regulator: spacemit-p1: Fix voltage ranges and support board power tree

[Guodong Xu]

This series fixes hardware voltage constraints and enables flexible power
tree configurations for the SpacemiT P1 PMIC.

Patch 1, n_voltages is corrected to match hardware register widths, as the
previous values prevented regulators from reaching higher operational
voltages (e.g., 3.3V on LDOs).

Patch 2-4, hardcoded supply assumptions are replaced with explicit
devicetree properties. PMIC supply connections are board-design decisions.
Moving this to DT allows supporting varied topologies without driver
modifications.

Note: Patch 3 introduces a bisect breakage by transitioning to
pin-specific supply names. Probe failures will occur on existing board
(K1 Bananapi F3) until Patch 4 updates the corresponding DTS file.

Signed-off-by: Guodong Xu <guodong at riscstar.com>
---
Guodong Xu (4):
      regulator: spacemit-p1: Fix n_voltages for BUCK and LDO regulators
      dt-bindings: mfd: spacemit,p1: Add individual regulator supply properties
      regulator: spacemit-p1: Update supply names
      riscv: dts: spacemit: k1-bananapi-f3: Update PMIC supply properties

 .../devicetree/bindings/mfd/spacemit,p1.yaml       | 58 +++++++++++++++++++++-
 arch/riscv/boot/dts/spacemit/k1-bananapi-f3.dts    | 12 ++++-
 drivers/regulator/spacemit-p1.c                    | 25 ++++++----
 3 files changed, 80 insertions(+), 15 deletions(-)
---
base-commit: c8a4a774a9b0d2c86593492625874e27e9cbc9a9
change-id: 20260122-spacemit-p1-ae596efe885f

Best regards,
-- 
Guodong Xu <guodong at riscstar.com>