[PATCH v4 0/9] mfd: bcm590xx: Add support for BCM59054

[Artur Weber]

On 19.02.2025 01:42, Rob Herring (Arm) wrote:
> 
> On Sat, 15 Feb 2025 10:39:35 +0100, Artur Weber wrote:
>> Add support for the BCM59054 MFD to the bcm590xx driver and fix a
>> couple of small bugs in it that also affected the already supported
>> BCM59056.
>>
>> While we're at it - convert the devicetree bindings to YAML format
>> and drop the bcm59056 DTS in favor of describing the PMU in users'
>> DTS files, as is done for most other MFDs.
>>
>> The BCM59054 is fairly similar to the BCM59056, with the primary
>> difference being the different number and layout of regulators.
>> It is primarily used in devices using the BCM21664 and BCM23550
>> chipsets.
>>
>> This patchset has been tested on a Samsung Galaxy Grand Neo
>> (baffinlite rev02; DTS not in mainline yet) with a BCM59054 PMIC.
>> Testing on a BCM59056 would be appreciated.
>>
>> Signed-off-by: Artur Weber <aweber.kernel at gmail.com>
>> ---
>> Changes in v4:
>> - Fix yamllint warnings in DT bindings
>> - Address miscelaneous review comments related to DT bindings
>>    - Note that I did not end up moving the regulator refs from
>>      allOf compatible matches; I explained my reasoning in [1].
>>      [1] https://lore.kernel.org/lkml/ab853605-859d-44c6-8cbd-44391cd677e6@gmail.com/
>> - Add PMU ID/revision parsing to MFD driver
>> - Fix instances of regulator data not matching vendor kernel for
>>    BCM59054
>> - Use different voltage table for BCM59054 VSR reg based on PMU
>>    revision
>> - Link to v3: https://lore.kernel.org/r/20250131-bcm59054-v3-0-bbac52a84787@gmail.com
>>
>> Changes in v3:
>> - Split out regulator DT bindings into separate YAML
>> - Use tables of regulator info instead of get_XXX_register, reg_is_XXX
>>    functions
>> - Drop "regulator: bcm590xx: Add proper handling for PMMODE registers";
>>    it adds unnecessary noise to the series and will be submitted separately
>> - Link to v2: https://lore.kernel.org/r/20231030-bcm59054-v2-0-5fa4011aa5ba@gmail.com
>>
>> Changes in v2:
>> - Fixed BCM59054 ID being passed to BCM59056 function in the
>>    regulator driver
>> - Dropped linux-rpi-kernel from the CC list
>> - Link to v1: https://lore.kernel.org/r/20231030-bcm59054-v1-0-3517f980c1e3@gmail.com
>>
>> ---
>> Artur Weber (9):
>>        dt-bindings: mfd: brcm,bcm59056: Convert to YAML
>>        dt-bindings: mfd: brcm,bcm59056: Add compatible for BCM59054
>>        ARM: dts: Drop DTS for BCM59056 PMU
>>        mfd: bcm590xx: Add support for multiple device types + BCM59054 compatible
>>        mfd: bcm590xx: Add PMU ID/revision parsing function
>>        regulator: bcm590xx: Use dev_err_probe for regulator register error
>>        regulator: bcm590xx: Store regulator descriptions in table
>>        regulator: bcm590xx: Rename BCM59056-specific data as such
>>        regulator: bcm590xx: Add support for BCM59054 regulators
>>
>>   .../devicetree/bindings/mfd/brcm,bcm59056.txt      |   39 -
>>   .../devicetree/bindings/mfd/brcm,bcm590xx.yaml     |   76 ++
>>   .../bindings/regulator/brcm,bcm59054.yaml          |   56 +
>>   .../bindings/regulator/brcm,bcm59056.yaml          |   51 +
>>   arch/arm/boot/dts/broadcom/bcm28155-ap.dts         |   68 +-
>>   arch/arm/boot/dts/broadcom/bcm59056.dtsi           |   91 --
>>   drivers/mfd/bcm590xx.c                             |   86 +-
>>   drivers/regulator/bcm590xx-regulator.c             | 1294 ++++++++++++++++----
>>   include/linux/mfd/bcm590xx.h                       |   22 +
>>   9 files changed, 1377 insertions(+), 406 deletions(-)
>> ---
>> base-commit: 0c3836482481200ead7b416ca80c68a29cfdaabd
>> change-id: 20240816-bcm59054-a880695e41e8
>>
>> Best regards,
>> --
>> Artur Weber <aweber.kernel at gmail.com>
>>
>>
>>
> 
> 
> My bot found new DTB warnings on the .dts files added or changed in this
> series.
> 
> Some warnings may be from an existing SoC .dtsi. Or perhaps the warnings
> are fixed by another series. Ultimately, it is up to the platform
> maintainer whether these warnings are acceptable or not. No need to reply
> unless the platform maintainer has comments.
> 
> If you already ran DT checks and didn't see these error(s), then
> make sure dt-schema is up to date:
> 
>    pip3 install dtschema --upgrade
> 
> 
> New warnings running 'make CHECK_DTBS=y for arch/arm/boot/dts/broadcom/' for 20250215-bcm59054-v4-0-dbfb2d76a855 at gmail.com:
> 
> arch/arm/boot/dts/broadcom/bcm53340-ubnt-unifi-switch8.dtb: mpcore at 19000000: $nodename:0: 'mpcore at 19000000' does not match '^([a-z][a-z0-9\-]+-bus|bus|localbus|soc|axi|ahb|apb)(@.+)?$'
> 	from schema $id: http://devicetree.org/schemas/simple-bus.yaml#
> 

Looks like a false-positive; this patchset does not modify this DTS at
all.

Best regards
Artur