[PATCH v7 0/2] pwm: intel: Add PWM driver for a new SoC

From: Rahul Tanwar
Date: Tue Aug 18 2020 - 01:49:24 EST


Patch 1 adds dt binding document in YAML format.
Patch 2 add PWM fan controller driver for LGM SoC.

v7:
- Address code quality related review concerns.
- Rename fan related property to pwm-*.
- Fix one make dt_binding_check reported error.

v6:
- Readjust .apply op as per review feedback.
- Add back pwm-cells property to resolve make dt_binding_check error.
pwm-cells is a required property for PWM driver.
- Add back fan related optional properties.

v5:
- Address below review concerns from Uwe Kleine-K�.
* Improve comments about Limitations.
* Use return value of regmap_update_bits if container function returns
error code.
* Modify .apply op to have strict checking for fixed period supported
by PWM HW.
* Use u64 as type when use min_t for duty_cycle.
* Add reset_control_assert() in failure case in probe where it was missing
earlier.
- Remove fan specific optional properties from pwm dt binding document (Rob Herring)

v4:
- Address below review concerns from Uwe Kleine-K�.
* Improve notes and limitations comments.
* Add common prefixes for all #defines.
* Modify/Improve logic in .apply & .get_state ops as advised.
* Skip error messages in probe when error is -EPROBE_DEFER.
* Add dependencies in Kconfig (OF & HAS_IOMEM) and add select REGMAP_MMIO.
* Address other code quality related review concerns.
- Fix make dt_binding_check reported error in YAML file.

v3:
- Address below review concerns from Uwe Kleine-K�.
* Remove fan rpm calibration task from the driver.
* Modify apply op as per the review feedback.
* Add roundup & round down where necessary.
* Address other misc code quality related review concerns.
* Use devm_reset_control_get_exclusive(). (Philipp Zabel)
* Improve dt binding document.

v2:
- Address below review concerns from Uwe Kleine-K�.
* Add notes and limitations about PWM HW.
* Rename all functions and structure to lgm_pwm_*
* Readjust space aligninment in structure fields to single space.
* Switch to using apply instead of config/enable/disable.
* Address other code quality related concerns.
* Rebase to 5.8-rc1.
- Address review concerns in dt binding YAML from Rob Herring.

v1:
- Initial version.


Rahul Tanwar (2):
Add DT bindings YAML schema for PWM fan controller of LGM SoC
Add PWM fan controller driver for LGM SoC

.../devicetree/bindings/pwm/intel,lgm-pwm.yaml | 54 +++++
drivers/pwm/Kconfig | 11 +
drivers/pwm/Makefile | 1 +
drivers/pwm/pwm-intel-lgm.c | 267 +++++++++++++++++++++
4 files changed, 333 insertions(+)
create mode 100644 Documentation/devicetree/bindings/pwm/intel,lgm-pwm.yaml
create mode 100644 drivers/pwm/pwm-intel-lgm.c

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2.11.0