u-boot.git/include/axp_pmic.h, branch next

power: regulator: add AXP318W support

2026-01-25T23:29:32+00:00

The PMIC is also known as AXP819 in vendor pmu code

For DCDC6, 8, 9, the underlying hardware support more than two levels
voltage step tuning, but for now only first two levels are implemented
in this driver, hence highest voltage will be limited at seccond level.
It actual meets board requirement in current design, and we've verified
it in Radxa Cubie A7A board.

Following are detail explanation of voltage tuning stpes for those DCDCs:

DCDC | voltage range  | units | steps | implemented
 6   | 0.5   -  1.2   | 10 mV | 71    | Y
 .   | 1.22  -  1.54  | 20 mV | 17    | Y
 .   | 1.8   -  2.4   | 20 mV | 31    | N
 .   | 2.44  -  2.76  | 40 mV | 9     | N
 --------------------------------------------------
 8/9 | 0.5   -  1.2   | 10 mV | 71    | Y
 .   | 1.22  -  1.84  | 20 mV | 32    | Y
 .   | 1.9   -  3.4   | 100mV | 16    | N

Signed-off-by: Yixun Lan 
Reviewed-by: Andre Przywara

power: regulator: add AXP323 support

2025-07-27T21:57:35+00:00

The X-Powers AXP323 is very close sibling to the AXP313A, only that it
adds support for dual-phasing the first two DC/DC converters.

We do not really care about this particular feature, so just add the new
compatible string and tie it to the existing AXP313A support code.

Signed-off-by: Andre Przywara

power: regulator: add AXP717 support

2024-07-14T23:17:27+00:00

The X-Powers AXP717 is a PMIC with four buck converters and a number
of LDOs, one of which is actually fixed (so not modelled here).

Add the compatible string and the respective regulator ranges to allow
drivers to adjust voltages.

Signed-off-by: Andre Przywara 
Reviewed-by: Ryan Walklin

power: regulator: add AXP313 support

2023-11-12T16:47:16+00:00

The X-Powers AXP313a is a small PMIC with just three buck converters and
three LDOs, one of which is actually fixed (so not modelled here).

Add the compatible string and the respective regulator ranges to allow
drivers to adjust voltages.

Signed-off-by: Andre Przywara 
Reviewed-by: Jaehoon Chung

power: pmic: axp: Provide a variant ID in the driver data

2023-01-23T01:18:31+00:00

Subordinate regulator drivers can use this enumerated ID instead of
matching the compatible string again.

Reviewed-by: Andre Przywara 
Signed-off-by: Samuel Holland 
Signed-off-by: Andre Przywara

include: axp_pmic: Include headers for all variants

2021-10-25T13:50:42+00:00

A single DM-based driver should be able to support some feature for
several PMIC variants where the interface is the same. For example,
all PMIC variants use the same register bit to trigger poweroff.

However, currently only definitions for a single PMIC are available at
a time. This requires drivers to use #ifdefs and different indentifiers
for each variant they support.

Let's simplify this by making register definitions for all variants
available from the header. Then no preprocessor conditions are needed;
the driver can use the register definition from any variant that
supports the relevant feature.

An exception is the GPIO-related definitions, which do not use unique
identifiers. So for now, keep them like before. They will be cleaned up
along with the GPIO driver.

Signed-off-by: Samuel Holland 
Reviewed-by: Andre Przywara 
Signed-off-by: Andre Przywara

include: axp_pmic: Add missing header guard definition

2021-10-25T13:50:07+00:00

This header attempted to avoid multiple inclusion using a header guard.
But the preprocessor symbol was never defined, so the guard had no
effect. Fix this by defining the symbol.

Signed-off-by: Samuel Holland 
Reviewed-by: Andre Przywara 
Signed-off-by: Andre Przywara

i2c: Add a DM_I2C driver for the sun8i RSB controller

2021-10-12T09:19:18+00:00

This bus controller is used to communicate with an X-Powers AXP PMIC.
Currently, various drivers access PMIC registers through a platform-
specific non-DM "pmic_bus" interface, which depends on the legacy I2C
framework. In order to convert those drivers to use DM_PMIC, this bus
needs a DM_I2C driver.

Refactor the rsb functions to take the base address as a parameter,
and implement both the existing interface (which is still needed in
SPL) and the DM_I2C interface on top of them.

The register for switching between I2C/P2WI/RSB mode is the same across
all PMIC variants, so move that to the common header.

There are only a couple of pairs of hardware/runtime addresses used
across all PMIC variants. So far the code expected only the "primary"
pair, but some PMICs like the AXP305 and AXP805 use the secondary pair,
so add support for that to the DM driver as well.

Signed-off-by: Samuel Holland 
Reviewed-by: Andre Przywara 
Signed-off-by: Andre Przywara

i2c: Add a DM_I2C driver for the sun6i P2WI controller

2021-10-12T08:50:56+00:00

This bus controller is used to communicate with an X-Powers AXP PMIC.
Currently, various drivers access PMIC registers through a platform-
specific non-DM "pmic_bus" interface, which depends on the legacy I2C
framework. In order to convert those drivers to use DM_PMIC, this bus
needs a DM_I2C driver.

Refactor the p2wi functions to take the base address as a parameter,
and implement both the existing interface (which is still needed in
SPL) and the DM_I2C interface on top of them.

The register for switching between I2C/P2WI/RSB mode is the same across
all PMIC variants. Move that to the common header, so it can be used by
both interface implementations.

Signed-off-by: Samuel Holland 
Reviewed-by: Andre Przywara 
Signed-off-by: Andre Przywara

sunxi: Add support for AXP305 PMIC

2021-01-25T21:52:00+00:00

This PMIC can be found on H616 boards and it's very similar to AXP805
and AXP806.

Signed-off-by: Jernej Skrabec 
Reviewed-by: Andre Przywara 
Reviewed-by: Jaehoon Chung 
Signed-off-by: Andre Przywara