Commit 6fc5d415 authored by Alex Elder's avatar Alex Elder Committed by Lee Jones
Browse files

mfd: simple-mfd-i2c: Add SpacemiT P1 support 



Enable support for the RTC and regulators found in the SpacemiT P1
PMIC.  Support is implemented by the simple I2C MFD driver.

The P1 PMIC is normally implemented with the SpacemiT K1 SoC.  This
PMIC provides 6 buck converters and 12 LDO regulators.  It also
implements a switch, watchdog timer, real-time clock, and more.
Initially its RTC and regulators are supported.

Signed-off-by: default avatarAlex Elder <elder@riscstar.com>
Link: https://lore.kernel.org/r/20250825172057.163883-3-elder@riscstar.com


Signed-off-by: default avatarLee Jones <lee@kernel.org>
parent 8566de1c

drivers/mfd/Kconfig

+13 −0
Original line number Diff line number Diff line
@@ -1254,6 +1254,19 @@ config MFD_QCOM_RPM 
	  Say M here if you want to include support for the Qualcomm RPM as a

	  module. This will build a module called "qcom_rpm".



config MFD_SPACEMIT_P1

	tristate "SpacemiT P1 PMIC"

	depends on ARCH_SPACEMIT || COMPILE_TEST

	depends on I2C

	select I2C_K1

	select MFD_SIMPLE_MFD_I2C

	help

	  This option supports the I2C-based SpacemiT P1 PMIC, which

	  contains regulators, a power switch, GPIOs, an RTC, and more.

	  This option is selected when any of the supported sub-devices

	  is configured.  The basic functionality is implemented by the

	  simple MFD I2C driver.



config MFD_SPMI_PMIC

	tristate "Qualcomm SPMI PMICs"

	depends on ARCH_QCOM || COMPILE_TEST

drivers/mfd/simple-mfd-i2c.c

+17 −0
Original line number Diff line number Diff line
@@ -93,6 +93,22 @@ static const struct simple_mfd_data maxim_mon_max77705 = { 
	.mfd_cell_size = ARRAY_SIZE(max77705_sensor_cells),

};



static const struct regmap_config spacemit_p1_regmap_config = {

	.reg_bits = 8,

	.val_bits = 8,

};



static const struct mfd_cell spacemit_p1_cells[] = {

	{ .name = "spacemit-p1-regulator", },

	{ .name = "spacemit-p1-rtc", },

};



static const struct simple_mfd_data spacemit_p1 = {

	.regmap_config = &spacemit_p1_regmap_config,

	.mfd_cell = spacemit_p1_cells,

	.mfd_cell_size = ARRAY_SIZE(spacemit_p1_cells),

};



static const struct of_device_id simple_mfd_i2c_of_match[] = {

	{ .compatible = "kontron,sl28cpld" },

	{ .compatible = "silergy,sy7636a", .data = &silergy_sy7636a},
@@ -101,6 +117,7 @@ static const struct of_device_id simple_mfd_i2c_of_match[] = { 
	{ .compatible = "maxim,max77705-battery", .data = &maxim_mon_max77705},

	{ .compatible = "fsl,lx2160aqds-fpga" },

	{ .compatible = "fsl,ls1028aqds-fpga" },

	{ .compatible = "spacemit,p1", .data = &spacemit_p1, },

	{}

};

MODULE_DEVICE_TABLE(of, simple_mfd_i2c_of_match);