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| author |   Sean Anderson <sean.anderson@seco.com> | 2022-03-03 17:35:43 -0500 |
|---|---|---|
| committer |   Thierry Reding <thierry.reding@gmail.com> | 2022-04-22 18:30:44 +0200 |
| commit | bc1ce713a0843ba14a1e00d5275ad42a8873a5ce (patch) | |
| tree | fc4c5200109eaddbba0267c60f5732677b936b03 /drivers/pwm/Kconfig | |
| parent | dt-bindings: pwm: Add Xilinx AXI Timer (diff) | |
| download | linux-dev-bc1ce713a0843ba14a1e00d5275ad42a8873a5ce.tar.xz linux-dev-bc1ce713a0843ba14a1e00d5275ad42a8873a5ce.zip | |
pwm: Add support for Xilinx AXI Timer
This adds PWM support for Xilinx LogiCORE IP AXI soft timers commonly
found on Xilinx FPGAs. At the moment clock control is very basic: we
just enable the clock during probe and pin the frequency. In the future,
someone could add support for disabling the clock when not in use.
Some common code has been specially demarcated. While currently only
used by the PWM driver, it is anticipated that it may be split off in
the future to be used by the timer driver as well.
This driver was written with reference to Xilinx DS764 for v1.03.a [1].
[1] https://www.xilinx.com/support/documentation/ip_documentation/axi_timer/v1_03_a/axi_timer_ds764.pdf
Signed-off-by: Sean Anderson <sean.anderson@seco.com>
Acked-by: Michal Simek <michal.simek@xilinx.com>
Reviewed-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
Diffstat (limited to 'drivers/pwm/Kconfig')
| -rw-r--r-- | drivers/pwm/Kconfig | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/drivers/pwm/Kconfig b/drivers/pwm/Kconfig index 21e3b05a5153..cefbf00b4c7e 100644 --- a/drivers/pwm/Kconfig +++ b/drivers/pwm/Kconfig @@ -640,4 +640,18 @@ config PWM_VT8500 To compile this driver as a module, choose M here: the module will be called pwm-vt8500. +config PWM_XILINX + tristate "Xilinx AXI Timer PWM support" + depends on OF_ADDRESS + depends on COMMON_CLK + select REGMAP_MMIO + help + PWM driver for Xilinx LogiCORE IP AXI timers. This timer is + typically a soft core which may be present in Xilinx FPGAs. + This device may also be present in Microblaze soft processors. + If you don't have this IP in your design, choose N. + + To compile this driver as a module, choose M here: the module + will be called pwm-xilinx. + endif |