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| author | Michal Simek <michal.simek@xilinx.com> | 2021-10-15 15:17:29 +0200 |
|---|---|---|
| committer | Michal Simek <michal.simek@xilinx.com> | 2022-03-30 14:50:47 +0200 |
| commit | fb92cc2c17724d66a32f7a033608a1bd2176a478 (patch) | |
| tree | d1119d0f13dde85e40980d4ae94c1620dc63714e /drivers/pwm/Kconfig | |
| parent | dcbdd24259beaff903e7ffffde646a3c5bd756ac (diff) | |
| download | u-boot-fb92cc2c17724d66a32f7a033608a1bd2176a478.zip u-boot-fb92cc2c17724d66a32f7a033608a1bd2176a478.tar.gz u-boot-fb92cc2c17724d66a32f7a033608a1bd2176a478.tar.bz2 | |
pwm: Add driver for cadence TTC
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
Diffstat (limited to 'drivers/pwm/Kconfig')
| -rw-r--r-- | drivers/pwm/Kconfig | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/pwm/Kconfig b/drivers/pwm/Kconfig index 6be612d..cb54e67 100644 --- a/drivers/pwm/Kconfig +++ b/drivers/pwm/Kconfig @@ -23,6 +23,13 @@ config PWM_AT91 help Support for PWM hardware on AT91 based SoC. +config PWM_CADENCE_TTC + bool "Enable support for the Cadence TTC PWM" + depends on DM_PWM && !CADENCE_TTC_TIMER + help + Cadence TTC can be configured as timer which is done via + CONFIG_CADENCE_TTC_TIMER or as PWM. This is covering only PWM now. + config PWM_CROS_EC bool "Enable support for the Chrome OS EC PWM" depends on DM_PWM |