u-boot.git/drivers/pwm/Makefile, branch master Unnamed repository; edit this file 'description' to name the repository. pwm: ti: am33xx: Enable Auxiliary PWM using eCAP 2025-06-12T22:26:56+00:00 Sukrut Bellary sbellary@baylibre.com 2025-05-30T21:22:30+00:00 1bf82082b9e4f079adaffc1dcee5306b082dc760 In am33xx SoC[1], enhanced capture (eCAP) supports auxiliary PWM (APWM). This series adds the PWM driver support for the APWM feature for eCAP on AM33xx. eCAP HW also supports the capture mode. Currently, this driver only supports APWM. This is based on the Linux kernel driver -> drivers/pwm/pwm-tiecap.c Version: v6.12 Tested on AM335x EVM[2]. [1] AM335x TRM - https://www.ti.com/lit/ug/spruh73q/spruh73q.pdf [2] AM335x EVM - https://www.ti.com/tool/TMDXEVM3358 Signed-off-by: Sukrut Bellary <sbellary@baylibre.com> 
In am33xx SoC[1], enhanced capture (eCAP) supports auxiliary PWM (APWM).
This series adds the PWM driver support for the APWM feature for eCAP on
AM33xx.

eCAP HW also supports the capture mode. Currently, this driver only
supports APWM.

This is based on the Linux kernel driver -> drivers/pwm/pwm-tiecap.c
Version: v6.12

Tested on AM335x EVM[2].

[1] AM335x TRM - https://www.ti.com/lit/ug/spruh73q/spruh73q.pdf
[2] AM335x EVM - https://www.ti.com/tool/TMDXEVM3358

Signed-off-by: Sukrut Bellary <sbellary@baylibre.com>
pwm: stm32: add driver to support pwm with timer 2025-03-12T15:39:39+00:00 Cheick Traore cheick.traore@foss.st.com 2025-03-11T14:30:35+00:00 be5523d38296a3c8bd7b6c0d64db6b953e95b770 Add driver to support pwm on STM32MP1X SoCs. The PWM signal is generated using a multifuntion timer which provide a pwm feature. Clock rate and addresses are retrieved from the multifunction timer driver. Signed-off-by: Cheick Traore <cheick.traore@foss.st.com> Reviewed-by: Fabrice Gasnier <fabrice.gasnier@foss.st.com> Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com> 
Add driver to support pwm on STM32MP1X SoCs. The PWM signal is generated
using a multifuntion timer which provide a pwm feature. Clock rate and
addresses are retrieved from the multifunction timer driver.

Signed-off-by: Cheick Traore <cheick.traore@foss.st.com>
Reviewed-by: Fabrice Gasnier <fabrice.gasnier@foss.st.com>
Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com>
drivers: pwm: pwm-imx: move pwm-imx-util into pwm-imx 2022-04-12T17:10:44+00:00 Tommaso Merciai tommaso.merciai@amarulasolutions.com 2022-03-26T11:19:05+00:00 2c432563dfd0f9976eb9d962bff726ae7b497ae7 Move pwm_imx_get_parms, pwm_id_to_reg functions into pwm-imx.c and drop off pwm-imx-util.c Signed-off-by: Tommaso Merciai <tommaso.merciai@amarulasolutions.com> 
Move pwm_imx_get_parms, pwm_id_to_reg functions into pwm-imx.c
and drop off pwm-imx-util.c

Signed-off-by: Tommaso Merciai <tommaso.merciai@amarulasolutions.com>
pwm: Add driver for cadence TTC 2022-03-30T12:50:47+00:00 Michal Simek michal.simek@xilinx.com 2021-10-15T13:17:29+00:00 fb92cc2c17724d66a32f7a033608a1bd2176a478 TTC has three modes of operations. Timer, PWM and input counters. There is already driver for timer under CADENCE_TTC_TIMER which is used for ZynqMP R5 configuration. This driver is targeting PWM which is for example configuration which can be used for fan control. The driver has been tested on Xilinx Kria SOM platform where fan is connected to one PL pin. When TTC output is connected via EMIO to PL pin TTC pwm can be configured and tested for example like this: pwm config 0 0 10000 1200 pwm enable 0 0 pwm config 0 0 10000 1400 pwm config 0 0 10000 1600 Signed-off-by: Michal Simek <michal.simek@xilinx.com> Reviewed-by: Sean Anderson <sean.anderson@seco.com> Link: https://lore.kernel.org/r/915a662ddb88f7a958ca1f307e8fea59af9d7feb.1634303847.git.michal.simek@xilinx.com 
TTC has three modes of operations. Timer, PWM and input counters.

There is already driver for timer under CADENCE_TTC_TIMER which is used for
ZynqMP R5 configuration.
This driver is targeting PWM which is for example configuration which can
be used for fan control.
The driver has been tested on Xilinx Kria SOM platform where fan is
connected to one PL pin. When TTC output is connected via EMIO to PL pin
TTC pwm can be configured and tested for example like this:
pwm config 0 0 10000 1200
pwm enable 0 0
pwm config 0 0 10000 1400
pwm config 0 0 10000 1600

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Reviewed-by: Sean Anderson <sean.anderson@seco.com>
Link: https://lore.kernel.org/r/915a662ddb88f7a958ca1f307e8fea59af9d7feb.1634303847.git.michal.simek@xilinx.com
pwm: Add Aspeed ast2600 PWM support 2022-03-25T17:35:50+00:00 Billy Tsai billy_tsai@aspeedtech.com 2022-03-08T03:04:05+00:00 fae101d6e8b247026145ecdc979133849c66e4e4 This patch add the support of PWM controller which can be found at aspeed ast2600 soc. The pwm supoorts up to 16 channels and it's part function of multi-function device "pwm-tach controller". Signed-off-by: Billy Tsai <billy_tsai@aspeedtech.com> Reviewed-by: Simon Glass <sjg@chromium.org> Reviewed-by: Chia-Wei Wang <chiawei_wang@aspeedtech.com> 
This patch add the support of PWM controller which can be found at aspeed
ast2600 soc. The pwm supoorts up to 16 channels and it's part function
of multi-function device "pwm-tach controller".

Signed-off-by: Billy Tsai <billy_tsai@aspeedtech.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Chia-Wei Wang <chiawei_wang@aspeedtech.com>
pwm: Add PWM driver for SAMA5D2 2021-10-12T12:18:39+00:00 Dan Sneddon dan.sneddon@microchip.com 2021-09-20T23:28:44+00:00 9b075973e9aeeab28d30398320ce722e765cdb3c Add support for the PWM found on the SAMA5D2 family of devices. Signed-off-by: Dan Sneddon <dan.sneddon@microchip.com> 
Add support for the PWM found on the SAMA5D2 family of devices.

Signed-off-by: Dan Sneddon <dan.sneddon@microchip.com>
pwm: Add a driver for Chrome OS EC PWM 2021-04-10T14:08:39+00:00 Alper Nebi Yasak alpernebiyasak@gmail.com 2020-10-22T20:49:27+00:00 1b9ee2882e6bd1c17ab2ec86249aa0347af68242 This PWM is used in rk3399-gru-bob and rk3399-gru-kevin to control the display brightness. We can only change the duty cycle, so on set_config() we just try to match the duty cycle that dividing duty_ns by period_ns gives us. To disable, we set the duty cycle to zero while keeping the old value for when we want to re-enable it. The cros_ec_set_pwm_duty() function is taken from Depthcharge's cros_ec_set_bl_pwm_duty() but modified to use the generic pwm type. The driver itself is very loosely based on rk_pwm.c for the general pwm driver structure. The devicetree binding file is from Linux, before it was converted to YAML at 5df5a577a6b4 ("dt-bindings: pwm: Convert google,cros-ec-pwm.txt to YAML format") in their repo. Signed-off-by: Alper Nebi Yasak <alpernebiyasak@gmail.com> Reviewed-by: Simon Glass <sjg@chromium.org> 
This PWM is used in rk3399-gru-bob and rk3399-gru-kevin to control
the display brightness. We can only change the duty cycle, so on
set_config() we just try to match the duty cycle that dividing duty_ns
by period_ns gives us. To disable, we set the duty cycle to zero while
keeping the old value for when we want to re-enable it.

The cros_ec_set_pwm_duty() function is taken from Depthcharge's
cros_ec_set_bl_pwm_duty() but modified to use the generic pwm type.
The driver itself is very loosely based on rk_pwm.c for the general pwm
driver structure.

The devicetree binding file is from Linux, before it was converted to
YAML at 5df5a577a6b4 ("dt-bindings: pwm: Convert google,cros-ec-pwm.txt
to YAML format") in their repo.

Signed-off-by: Alper Nebi Yasak <alpernebiyasak@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
pwm: ti: am33xx: add enhanced pwm driver 2021-01-12T05:28:05+00:00 Dario Binacchi dariobin@libero.it 2020-12-29T23:16:24+00:00 ade7f0d00e598387fe67475d54511df4fe25d83f Enhanced high resolution PWM module (EHRPWM) hardware can be used to generate PWM output over 2 channels. This commit adds PWM driver support for EHRPWM device present on AM33XX SOC. The code is based on the drivers/pwm/pwm-tiehrpwm.c driver of the Linux kernel version 5.9-rc7. For DT binding details see: - Documentation/devicetree/bindings/pwm/pwm-tiehrpwm.txt Signed-off-by: Dario Binacchi <dariobin@libero.it> 
Enhanced high resolution PWM module (EHRPWM) hardware can be used to
generate PWM output over 2 channels. This commit adds PWM driver support
for EHRPWM device present on AM33XX SOC.

The code is based on the drivers/pwm/pwm-tiehrpwm.c driver of the Linux
kernel version 5.9-rc7.
For DT binding details see:
- Documentation/devicetree/bindings/pwm/pwm-tiehrpwm.txt

Signed-off-by: Dario Binacchi <dariobin@libero.it>
pwm: Add driver for Amlogic Meson PWM controller 2020-10-05T16:02:16+00:00 Neil Armstrong narmstrong@baylibre.com 2020-10-01T08:04:56+00:00 2d481b2e3e22f7be854d381a7bafd92a65e18b23 This adds the driver for the PWM controller found in the Amlogic SoCs. This PWM is only a set of Gates, Dividers and Counters: PWM output is achieved by calculating a clock that permits calculating two periods (low and high). The counter then has to be set to switch after N cycles for the first half period. The hardware has no "polarity" setting. This driver reverses the period cycles (the low length is inverted with the high length) for PWM_POLARITY_INVERSED. Disabling the PWM stops the output immediately (without waiting for the current period to complete first). Signed-off-by: Neil Armstrong <narmstrong@baylibre.com> 
This adds the driver for the PWM controller found in the Amlogic SoCs.

This PWM is only a set of Gates, Dividers and Counters:
PWM output is achieved by calculating a clock that permits calculating
two periods (low and high). The counter then has to be set to switch after
N cycles for the first half period.
The hardware has no "polarity" setting. This driver reverses the period
cycles (the low length is inverted with the high length) for
PWM_POLARITY_INVERSED.

Disabling the PWM stops the output immediately (without waiting for the
current period to complete first).

Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
pwm: Add PWM driver for SiFive SoC 2020-07-09T04:03:12+00:00 Yash Shah yash.shah@sifive.com 2020-04-23T11:27:16+00:00 7239a610b796b0bb8f85c5c21798596c2768cb50 Adds a PWM driver for PWM chip present in SiFive's HiFive Unleashed SoC This driver is simple port of Linux pwm sifive driver from Linux v5.6 commit: 9e37a53eb051 ("pwm: sifive: Add a driver for SiFive SoC PWM") Signed-off-by: Yash Shah <yash.shah@sifive.com> Reviewed-by: Heiko Schocher <hs@denx.de> 
Adds a PWM driver for PWM chip present in SiFive's HiFive Unleashed SoC
This driver is simple port of Linux pwm sifive driver from Linux v5.6

commit: 9e37a53eb051 ("pwm: sifive: Add a driver for SiFive SoC PWM")

Signed-off-by: Yash Shah <yash.shah@sifive.com>
Reviewed-by: Heiko Schocher <hs@denx.de>