On Wed, Mar 15, 2023 at 12:07:32PM +0100, Julien Panis wrote: > TPS6594 is a Power Management IC which provides regulators and others > features like GPIOs, RTC, watchdog, ESMs (Error Signal Monitor), and > PFSM (Pre-configurable Finite State Machine). The SoC and the PMIC can > communicate through the I2C or SPI interfaces. > TPS6594 is the super-set device while TPS6593 and LP8764X are derivatives. > > This series adds support to TI TPS6594 PMIC and its derivatives. > > The features implemented in this series are: > - Core (MFD I2C and SPI entry points) > - ESM (child device) > - PFSM (child device) > > - Core description: > I2C and SPI interface protocols are implemented, with and without > the bit-integrity error detection feature (CRC mode). > In multi-PMIC configuration, all instances share a single GPIO of > the SoC to generate interrupt requests via their respective nINT > output pin. > > - ESM description: > This device monitors the SoC error output signal at its nERR_SOC > input pin. In error condition, ESM toggles its nRSTOUT_SOC pin > to reset the SoC. > Basically, ESM driver starts ESM hardware. > > - 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. > > Link to v1: > https://lore.kernel.org/all/20230216114410.183489-1-jpanis@xxxxxxxxxxxx/ > > Others series will be submitted over the next few weeks, providing > drivers for others child devices like GPIOs (pinctrl), RTC, and > regulators. Board support will also be added (device trees). I don't care about the drivers, but I need a complete binding for the device to review it. Rob
