[PATCH v5 00/11] Add support for TI TPS65224 PMIC

[Bhargav Raviprakash <bhargav.r@ltts.com>]

This series modifies the existing TPS6594 drivers to add support for the
TPS65224 PMIC device that is a derivative of TPS6594. TPS65224 has a
similar register map to TPS6594 with a few differences. SPI, I2C, ESM,
PFSM, Regulators and GPIO features overlap between the two devices.

TPS65224 is a Power Management IC (PMIC) which provides regulators and
other features like GPIOs, Watchdog, Error Signal Monitor (ESM) and
Pre-configurable Finite State Machine (PFSM). The SoC and the PMIC can
communicate through the I2C or SPI interfaces. The PMIC TPS65224
additionally has a 12-bit ADC.
Data Sheet for TPS65224: https://www.ti.com/product/TPS65224-Q1

Driver re-use is applied following the advice of the following series:
https://lore.kernel.org/lkml/2f467b0a-1d11-4ec7-8ca6-6c4ba66e5887@baylibre.com/

The features implemented in this series are:
- TPS65224 Register definitions
- Core (MFD I2C and SPI entry points)
- PFSM	
- Regulators
- Pinctrl

TPS65224 Register definitions:
This patch adds macros for register field definitions of TPS65224
to the existing TPS6594 driver.  

Core description:
I2C and SPI interface protocols are implemented, with and without
the bit-integrity error detection feature (CRC mode).

PFSM description:
Strictly speaking, PFSM is not hardware. It is a piece of code.
PMIC integrates a state machine which manages operational modes.
Depending on the current operational mode, some voltage domains
remain energized while others can be off.
PFSM driver can be used to trigger transitions between configured
states.

Regulators description:
4 BUCKs and 3 LDOs.
BUCK12 can be used in dual-phase mode.

Pinctrl description:
TPS65224 family has 6 GPIOs. Those GPIOs can also serve different
functions such as I2C or SPI interface or watchdog disable functions.
The driver provides both pinmuxing for the functions and GPIO capability.

This series was tested on linux-next tag: next-20240118

Test logs can be found here:
https://gist.github.com/LeonardMH/58ec135921fb1062ffd4a8b384831eb0

Changelog v4 -> v5:
- Regulator events changed to REGULATOR_EVENT_REGULATION_OUT for _UVOV 
- Fixed pinctrl probe issues with TPS6593 PMIC
- Refactoring pinctrl driver: reduced no. of switch case statements and 
  using template structs for initializing tps6594_pinctrl.

Bhargav Raviprakash (8):
  mfd: tps6594: use volatile_table instead of volatile_reg
  mfd: tps6594: add regmap config in match data
  dt-bindings: mfd: ti,tps6594: Add TI TPS65224 PMIC
  mfd: tps6594-i2c: Add TI TPS65224 PMIC I2C
  mfd: tps6594-spi: Add TI TPS65224 PMIC SPI
  mfd: tps6594-core: Add TI TPS65224 PMIC core
  misc: tps6594-pfsm: Add TI TPS65224 PMIC PFSM
  arch: arm64: dts: ti: k3-am62p5-sk: Add TPS65224 PMIC support in AM62P
    dts

Nirmala Devi Mal Nadar (3):
  mfd: tps6594: Add register definitions for TI TPS65224 PMIC
  regulator: tps6594-regulator: Add TI TPS65224 PMIC regulators
  pinctrl: pinctrl-tps6594: Add TPS65224 PMIC pinctrl and GPIO

 .../devicetree/bindings/mfd/ti,tps6594.yaml   |   1 +
 arch/arm64/boot/dts/ti/k3-am62p5-sk.dts       |  95 +++++
 drivers/mfd/tps6594-core.c                    | 253 ++++++++++--
 drivers/mfd/tps6594-i2c.c                     |  41 +-
 drivers/mfd/tps6594-spi.c                     |  43 ++-
 drivers/misc/tps6594-pfsm.c                   |  48 ++-
 drivers/pinctrl/pinctrl-tps6594.c             | 275 ++++++++++---
 drivers/regulator/Kconfig                     |   4 +-
 drivers/regulator/tps6594-regulator.c         | 238 ++++++++++--
 include/linux/mfd/tps6594.h                   | 362 +++++++++++++++++-
 10 files changed, 1215 insertions(+), 145 deletions(-)


base-commit: 2863b714f3ad0a9686f2de1b779228ad8c7a8052
-- 
2.25.1