[PATCH v6 0/7] Add STM32MP25 LPTIM support: MFD, PWM, IIO, counter, clocksource

[Fabrice Gasnier]

On 5/1/25 15:14, Lee Jones wrote:
> On Tue, 29 Apr 2025, Fabrice Gasnier wrote:
> 
>> This series adds support for STM32MP25 to MFD PWM, IIO, counter and
>> clocksource low-power timer (LPTIM) drivers.
>> This new variant is managed by using a new DT compatible string, hardware
>> configuration and version registers.
>> It comes with a slightly updated register set, some new features and new
>> interconnect signals inside the SoC.
>> Same feature list as on STM32MP1x is supported currently.
>> The device tree files add all instances in stm32mp251 dtsi file.
>>
>> Changes in V6
>> ---
>> - Fixed kernel test robot warning
>>   https://lore.kernel.org/oe-kbuild-all/202504261456.aCATBoYN-lkp@intel.com/
>>
>> Changes in V5
>> ---
>> - Add a necessary delay in clocksource driver, when enabling the timer.
>> - Add collected Acks
>> - Dropped IIO trigger patch as applied by Jonathan [1] (no dependency)
>>   [1] https://lore.kernel.org/all/20250331110435.26157ebe@jic23-huawei/
>>
>> Changes in V4
>> ---
>> - Simplify IIO trigger driver as per Jonathan's comments.
>> - Rework clocksource driver: encapsulate mp25 changes in separate function
>>   after Daniel's suggestion.
>> - Add some definitions to MFD header.
>>
>> Changes in V3
>> ---
>> - Yaml indentation issue fixed, reported by Rob's bot
>>
>> Changes in V2
>> ---
>> - Review comments from Krzysztof
>>   - Adopt compatible fallback in dt-bindings and driver
>>   - drivers: drop "st,stm32mp25-..." compatibles when unused (e.g. no .data)
>>   - counter driver: no update (patch dropped)
>>   - defconfig: only enable the necessary config for upstream board
>>   - add lptimer DT node in stm32mp257f-ev1 board
>> - Add missing management of IER access for stm32mp25
>>
>> Fabrice Gasnier (7):
>>   dt-bindings: mfd: stm32-lptimer: add support for stm32mp25
>>   mfd: stm32-lptimer: add support for stm32mp25
>>   clocksource: stm32-lptimer: add support for stm32mp25
>>   pwm: stm32-lp: add support for stm32mp25
>>   arm64: defconfig: enable STM32 LP timer clockevent driver
>>   arm64: dts: st: add low-power timer nodes on stm32mp251
>>   arm64: dts: st: use lptimer3 as tick broadcast source on
>>     stm32mp257f-ev1
>>
>>  .../bindings/mfd/st,stm32-lptimer.yaml        |  40 +++-
>>  arch/arm64/boot/dts/st/stm32mp251.dtsi        | 177 ++++++++++++++
>>  arch/arm64/boot/dts/st/stm32mp257f-ev1.dts    |   8 +
>>  arch/arm64/configs/defconfig                  |   2 +
>>  drivers/clocksource/timer-stm32-lp.c          |  61 ++++-
>>  drivers/mfd/stm32-lptimer.c                   |  33 ++-
>>  drivers/pwm/pwm-stm32-lp.c                    | 219 +++++++++++++++---
>>  include/linux/mfd/stm32-lptimer.h             |  37 ++-
>>  8 files changed, 537 insertions(+), 40 deletions(-)
> 
> Is it just the Clocksource Ack that we're waiting on now?
> 
Hi Lee,

Yes,

Best Regards,
Fabrice