MCP16502 is a Power Management IC from Microchip. It has 4 Buck outputs and 2 LDOs. The buck regulators can be used in two modes: normal(FPWM) and low-power(Auto PFM).
This patch series adds support for the MCP16502 PMIC. v5: - split the driver patch in two patches, this one is the initial implementation without the support for suspend/resume v4: - make entire intial comment a C++ comment v3: - use CONFIG_SUSPEND and CONFIG_PM to fix compile errors for some configs v2: - use lpm-gpios instead of lpm-gpio in devicetree bindings documentation - describe the regulators present on the PMIC in the devicetree bindings documentation - add SPDX license inside a C++ comment - prefix macro - remove mcp16502_update_regulator and mcp16502_read - replace ?: with if-else - change some if-else with switch statements for legibility - use regmap helpers for regultor settings during runtime - make mcp16502_get_status read the status from the PMIC STS registers - use module_i2c_driver - use the PMIC's Hibernate registers for suspend-to-mem, the PMIC's Low-power registers for standby and the PMIC's Active registers for normal runtime Note about mcp16502_suspend: - mcp16502_gpio_set_mode(mcp, MCP16502_OPMODE_HIB) has now been changed to mcp16502_gpio_set_mode(mcp, MCP16502_OPMODE_LPM) for legibility. Note that the function call only sets the LPM pin of the PMIC to high. This puts the PMIC in Low-power operating mode. Hibernate operating mode is reached when the MPU sets the PWRHLD line to zero (typically when entering suspend-to-ram). Andrei Stefanescu (3): regulator: dt-bindings: add MCP16502 regulator bindings MAINTAINERS: add maintainer for MCP16502 PMIC driver regulator: mcp16502: add regulator driver for MCP16502 .../bindings/regulator/mcp16502-regulator.txt | 143 ++++++ MAINTAINERS | 7 + drivers/regulator/Kconfig | 9 + drivers/regulator/Makefile | 1 + drivers/regulator/mcp16502.c | 520 +++++++++++++++++++++ 5 files changed, 680 insertions(+) create mode 100644 Documentation/devicetree/bindings/regulator/mcp16502-regulator.txt create mode 100644 drivers/regulator/mcp16502.c -- 2.7.4
