1 # SPDX-License-Identifier: GPL-2.0-only
3 bool "Pulse-Width Modulation (PWM) Support"
5 Generic Pulse-Width Modulation (PWM) support.
7 In Pulse-Width Modulation, a variation of the width of pulses
8 in a rectangular pulse signal is used as a means to alter the
9 average power of the signal. Applications include efficient
10 power delivery and voltage regulation. In computer systems,
11 PWMs are commonly used to control fans or the brightness of
14 This framework provides a generic interface to PWM devices
15 within the Linux kernel. On the driver side it provides an API
16 to register and unregister a PWM chip, an abstraction of a PWM
17 controller, that supports one or more PWM devices. Client
18 drivers can request PWM devices and use the generic framework
19 to configure as well as enable and disable them.
21 This generic framework replaces the legacy PWM framework which
22 allows only a single driver implementing the required API. Not
23 all legacy implementations have been ported to the framework
24 yet. The framework provides an API that is backward compatible
25 with the legacy framework so that existing client drivers
26 continue to work as expected.
37 bool "PWM lowlevel drivers additional checks and debug messages"
38 depends on DEBUG_KERNEL
40 This option enables some additional checks to help lowlevel driver
41 authors to get their callbacks implemented correctly.
42 It is expected to introduce some runtime overhead and diagnostic
43 output to the kernel log, so only enable while working on a driver.
46 tristate "AB8500 PWM support"
47 depends on AB8500_CORE && ARCH_U8500
49 Generic PWM framework driver for Analog Baseband AB8500.
51 To compile this driver as a module, choose M here: the module
52 will be called pwm-ab8500.
55 tristate "Atmel PWM support"
56 depends on ARCH_AT91 || COMPILE_TEST
57 depends on HAS_IOMEM && OF
59 Generic PWM framework driver for Atmel SoC.
61 To compile this driver as a module, choose M here: the module
62 will be called pwm-atmel.
64 config PWM_ATMEL_HLCDC_PWM
65 tristate "Atmel HLCDC PWM support"
66 depends on MFD_ATMEL_HLCDC
69 Generic PWM framework driver for the PWM output of the HLCDC
70 (Atmel High-end LCD Controller). This PWM output is mainly used
71 to control the LCD backlight.
73 To compile this driver as a module, choose M here: the module
74 will be called pwm-atmel-hlcdc.
77 tristate "Atmel TC Block PWM support"
81 Generic PWM framework driver for Atmel Timer Counter Block.
83 A Timer Counter Block provides 6 PWM devices grouped by 2.
84 Devices in a given group must have the same period.
86 To compile this driver as a module, choose M here: the module
87 will be called pwm-atmel-tcb.
90 tristate "iProc PWM support"
91 depends on ARCH_BCM_IPROC || COMPILE_TEST
92 depends on COMMON_CLK && HAS_IOMEM
93 default ARCH_BCM_IPROC
95 Generic PWM framework driver for Broadcom iProc PWM block. This
96 block is used in Broadcom iProc SoC's.
98 To compile this driver as a module, choose M here: the module
99 will be called pwm-bcm-iproc.
102 tristate "Kona PWM support"
103 depends on ARCH_BCM_MOBILE || ARCH_BCM_CYGNUS || COMPILE_TEST
104 depends on HAVE_CLK && HAS_IOMEM
105 default ARCH_BCM_MOBILE || ARCH_BCM_CYGNUS
107 Generic PWM framework driver for Broadcom Kona PWM block.
109 To compile this driver as a module, choose M here: the module
110 will be called pwm-bcm-kona.
113 tristate "BCM2835 PWM support"
114 depends on ARCH_BCM2835 || ARCH_BRCMSTB || COMPILE_TEST
117 PWM framework driver for BCM2835 controller (Raspberry Pi)
119 To compile this driver as a module, choose M here: the module
120 will be called pwm-bcm2835.
123 tristate "Marvell Berlin PWM support"
124 depends on ARCH_BERLIN || COMPILE_TEST
127 PWM framework driver for Marvell Berlin SoCs.
129 To compile this driver as a module, choose M here: the module
130 will be called pwm-berlin.
133 tristate "Broadcom STB PWM support"
134 depends on ARCH_BRCMSTB || BMIPS_GENERIC || COMPILE_TEST
137 Generic PWM framework driver for the Broadcom Set-top-Box
140 To compile this driver as a module, choose M Here: the module
141 will be called pwm-brcmstb.c.
144 tristate "CLPS711X PWM support"
145 depends on ARCH_CLPS711X || COMPILE_TEST
148 Generic PWM framework driver for Cirrus Logic CLPS711X.
150 To compile this driver as a module, choose M here: the module
151 will be called pwm-clps711x.
154 bool "Intel Crystalcove (CRC) PWM support"
155 depends on X86 && INTEL_SOC_PMIC
157 Generic PWM framework driver for Crystalcove (CRC) PMIC based PWM
161 tristate "ChromeOS EC PWM driver"
164 PWM driver for exposing a PWM attached to the ChromeOS Embedded
168 tristate "DesignWare PWM Controller"
171 PWM driver for Synopsys DWC PWM Controller attached to a PCI bus.
173 To compile this driver as a module, choose M here: the module
174 will be called pwm-dwc.
177 tristate "Cirrus Logic EP93xx PWM support"
178 depends on ARCH_EP93XX || COMPILE_TEST
181 Generic PWM framework driver for Cirrus Logic EP93xx.
183 To compile this driver as a module, choose M here: the module
184 will be called pwm-ep93xx.
187 tristate "Freescale FlexTimer Module (FTM) PWM support"
192 Generic FTM PWM framework driver for Freescale VF610 and
193 Layerscape LS-1 SoCs.
195 To compile this driver as a module, choose M here: the module
196 will be called pwm-fsl-ftm.
199 tristate "HiSilicon BVT PWM support"
200 depends on ARCH_HISI || COMPILE_TEST
203 Generic PWM framework driver for HiSilicon BVT SoCs.
205 To compile this driver as a module, choose M here: the module
206 will be called pwm-hibvt.
209 tristate "Imagination Technologies PWM driver"
211 depends on MFD_SYSCON
212 depends on COMMON_CLK
213 depends on MIPS || COMPILE_TEST
215 Generic PWM framework driver for Imagination Technologies
216 PWM block which supports 4 channels.
218 To compile this driver as a module, choose M here: the module
219 will be called pwm-img
222 tristate "i.MX1 PWM support"
223 depends on ARCH_MXC || COMPILE_TEST
226 Generic PWM framework driver for i.MX1 and i.MX21
228 To compile this driver as a module, choose M here: the module
229 will be called pwm-imx1.
232 tristate "i.MX27 PWM support"
233 depends on ARCH_MXC || COMPILE_TEST
236 Generic PWM framework driver for i.MX27 and later i.MX SoCs.
238 To compile this driver as a module, choose M here: the module
239 will be called pwm-imx27.
242 tristate "i.MX TPM PWM support"
243 depends on ARCH_MXC || COMPILE_TEST
244 depends on HAVE_CLK && HAS_IOMEM
246 Generic PWM framework driver for i.MX7ULP TPM module, TPM's full
247 name is Low Power Timer/Pulse Width Modulation Module.
249 To compile this driver as a module, choose M here: the module
250 will be called pwm-imx-tpm.
253 tristate "Intel LGM PWM support"
255 depends on (OF && X86) || COMPILE_TEST
258 Generic PWM fan controller driver for LGM SoC.
260 To compile this driver as a module, choose M here: the module
261 will be called pwm-intel-lgm.
264 tristate "Azoteq IQS620A PWM support"
265 depends on MFD_IQS62X || COMPILE_TEST
267 Generic PWM framework driver for the Azoteq IQS620A multi-function
270 To compile this driver as a module, choose M here: the module will
271 be called pwm-iqs620a.
274 tristate "Ingenic JZ47xx PWM support"
276 depends on COMMON_CLK
279 Generic PWM framework driver for Ingenic JZ47xx based
282 To compile this driver as a module, choose M here: the module
283 will be called pwm-jz4740.
286 tristate "Intel Keem Bay PWM driver"
287 depends on ARCH_KEEMBAY || (ARM64 && COMPILE_TEST)
289 The platform driver for Intel Keem Bay PWM controller.
291 To compile this driver as a module, choose M here: the module
292 will be called pwm-keembay.
295 tristate "TI/National Semiconductor LP3943 PWM support"
296 depends on MFD_LP3943
298 Generic PWM framework driver for LP3943 which supports two PWM
301 To compile this driver as a module, choose M here: the module
302 will be called pwm-lp3943.
304 config PWM_LPC18XX_SCT
305 tristate "LPC18xx/43xx PWM/SCT support"
306 depends on ARCH_LPC18XX || COMPILE_TEST
309 Generic PWM framework driver for NXP LPC18xx PWM/SCT which
310 supports 16 channels.
311 A maximum of 15 channels can be requested simultaneously and
312 must have the same period.
314 To compile this driver as a module, choose M here: the module
315 will be called pwm-lpc18xx-sct.
318 tristate "LPC32XX PWM support"
319 depends on ARCH_LPC32XX || COMPILE_TEST
322 Generic PWM framework driver for LPC32XX. The LPC32XX SOC has two
325 To compile this driver as a module, choose M here: the module
326 will be called pwm-lpc32xx.
333 tristate "Intel LPSS PWM PCI driver"
334 depends on X86 || COMPILE_TEST
335 depends on HAS_IOMEM && PCI
338 The PCI driver for Intel Low Power Subsystem PWM controller.
340 To compile this driver as a module, choose M here: the module
341 will be called pwm-lpss-pci.
343 config PWM_LPSS_PLATFORM
344 tristate "Intel LPSS PWM platform driver"
345 depends on (X86 && ACPI) || COMPILE_TEST
349 The platform driver for Intel Low Power Subsystem PWM controller.
351 To compile this driver as a module, choose M here: the module
352 will be called pwm-lpss-platform.
355 tristate "Amlogic Meson PWM driver"
356 depends on ARCH_MESON || COMPILE_TEST
357 depends on COMMON_CLK && HAS_IOMEM
359 The platform driver for Amlogic Meson PWM controller.
361 To compile this driver as a module, choose M here: the module
362 will be called pwm-meson.
365 tristate "MediaTek display PWM driver"
366 depends on ARCH_MEDIATEK || COMPILE_TEST
369 Generic PWM framework driver for MediaTek disp-pwm device.
370 The PWM is used to control the backlight brightness for display.
372 To compile this driver as a module, choose M here: the module
373 will be called pwm-mtk-disp.
376 tristate "MediaTek PWM support"
377 depends on ARCH_MEDIATEK || RALINK || COMPILE_TEST
380 Generic PWM framework driver for Mediatek ARM SoC.
382 To compile this driver as a module, choose M here: the module
383 will be called pwm-mediatek.
386 tristate "Freescale MXS PWM support"
387 depends on ARCH_MXS || COMPILE_TEST
388 depends on HAS_IOMEM && OF
391 Generic PWM framework driver for Freescale MXS.
393 To compile this driver as a module, choose M here: the module
394 will be called pwm-mxs.
396 config PWM_OMAP_DMTIMER
397 tristate "OMAP Dual-Mode Timer PWM support"
399 depends on OMAP_DM_TIMER || COMPILE_TEST
401 Generic PWM framework driver for OMAP Dual-Mode Timer PWM output
403 To compile this driver as a module, choose M here: the module
404 will be called pwm-omap-dmtimer
407 tristate "NXP PCA9685 PWM driver"
411 Generic PWM framework driver for NXP PCA9685 LED controller.
413 To compile this driver as a module, choose M here: the module
414 will be called pwm-pca9685.
417 tristate "PXA PWM support"
418 depends on ARCH_PXA || COMPILE_TEST
421 Generic PWM framework driver for PXA.
423 To compile this driver as a module, choose M here: the module
424 will be called pwm-pxa.
426 config PWM_RASPBERRYPI_POE
427 tristate "Raspberry Pi Firwmware PoE Hat PWM support"
428 # Make sure not 'y' when RASPBERRYPI_FIRMWARE is 'm'. This can only
429 # happen when COMPILE_TEST=y, hence the added !RASPBERRYPI_FIRMWARE.
430 depends on RASPBERRYPI_FIRMWARE || (COMPILE_TEST && !RASPBERRYPI_FIRMWARE)
432 Enable Raspberry Pi firmware controller PWM bus used to control the
436 tristate "Renesas R-Car PWM support"
437 depends on ARCH_RENESAS || COMPILE_TEST
440 This driver exposes the PWM Timer controller found in Renesas
441 R-Car chips through the PWM API.
443 To compile this driver as a module, choose M here: the module
444 will be called pwm-rcar.
446 config PWM_RENESAS_TPU
447 tristate "Renesas TPU PWM support"
448 depends on ARCH_RENESAS || COMPILE_TEST
451 This driver exposes the Timer Pulse Unit (TPU) PWM controller found
452 in Renesas chips through the PWM API.
454 To compile this driver as a module, choose M here: the module
455 will be called pwm-renesas-tpu.
458 tristate "Rockchip PWM support"
459 depends on ARCH_ROCKCHIP || COMPILE_TEST
462 Generic PWM framework driver for the PWM controller found on
466 tristate "Samsung PWM support"
467 depends on PLAT_SAMSUNG || ARCH_S5PV210 || ARCH_EXYNOS || COMPILE_TEST
470 Generic PWM framework driver for Samsung.
472 To compile this driver as a module, choose M here: the module
473 will be called pwm-samsung.
476 tristate "SiFive PWM support"
478 depends on COMMON_CLK && HAS_IOMEM
479 depends on RISCV || COMPILE_TEST
481 Generic PWM framework driver for SiFive SoCs.
483 To compile this driver as a module, choose M here: the module
484 will be called pwm-sifive.
487 tristate "Kontron sl28cpld PWM support"
488 depends on MFD_SL28CPLD || COMPILE_TEST
490 Generic PWM framework driver for board management controller
491 found on the Kontron sl28 CPLD.
493 To compile this driver as a module, choose M here: the module
494 will be called pwm-sl28cpld.
497 tristate "STMicroelectronics SPEAr PWM support"
498 depends on PLAT_SPEAR || COMPILE_TEST
499 depends on HAS_IOMEM && OF
501 Generic PWM framework driver for the PWM controller on ST
504 To compile this driver as a module, choose M here: the module
505 will be called pwm-spear.
508 tristate "Spreadtrum PWM support"
509 depends on ARCH_SPRD || COMPILE_TEST
512 Generic PWM framework driver for the PWM controller on
515 To compile this driver as a module, choose M here: the module
516 will be called pwm-sprd.
519 tristate "STiH4xx PWM support"
520 depends on ARCH_STI || COMPILE_TEST
521 depends on HAS_IOMEM && OF
523 Generic PWM framework driver for STiH4xx SoCs.
525 To compile this driver as a module, choose M here: the module
526 will be called pwm-sti.
529 tristate "STMicroelectronics STM32 PWM"
530 depends on MFD_STM32_TIMERS || COMPILE_TEST
532 Generic PWM framework driver for STM32 SoCs.
534 To compile this driver as a module, choose M here: the module
535 will be called pwm-stm32.
538 tristate "STMicroelectronics STM32 PWM LP"
539 depends on MFD_STM32_LPTIMER || COMPILE_TEST
541 Generic PWM framework driver for STMicroelectronics STM32 SoCs
542 with Low-Power Timer (LPTIM).
544 To compile this driver as a module, choose M here: the module
545 will be called pwm-stm32-lp.
548 bool "STMPE expander PWM export"
551 This enables support for the PWMs found in the STMPE I/O
555 tristate "Allwinner PWM support"
556 depends on ARCH_SUNXI || COMPILE_TEST
557 depends on HAS_IOMEM && COMMON_CLK
559 Generic PWM framework driver for Allwinner SoCs.
561 To compile this driver as a module, choose M here: the module
562 will be called pwm-sun4i.
565 tristate "NVIDIA Tegra PWM support"
566 depends on ARCH_TEGRA || COMPILE_TEST
569 Generic PWM framework driver for the PWFM controller found on NVIDIA
572 To compile this driver as a module, choose M here: the module
573 will be called pwm-tegra.
576 tristate "ECAP PWM support"
577 depends on ARCH_OMAP2PLUS || ARCH_DAVINCI_DA8XX || ARCH_KEYSTONE || ARCH_K3 || COMPILE_TEST
580 PWM driver support for the ECAP APWM controller found on TI SOCs
582 To compile this driver as a module, choose M here: the module
583 will be called pwm-tiecap.
586 tristate "EHRPWM PWM support"
587 depends on ARCH_OMAP2PLUS || ARCH_DAVINCI_DA8XX || ARCH_K3 || COMPILE_TEST
590 PWM driver support for the EHRPWM controller found on TI SOCs
592 To compile this driver as a module, choose M here: the module
593 will be called pwm-tiehrpwm.
596 tristate "TWL4030/6030 PWM support"
597 depends on TWL4030_CORE
599 Generic PWM framework driver for TWL4030/6030.
601 To compile this driver as a module, choose M here: the module
602 will be called pwm-twl.
605 tristate "TWL4030/6030 PWM support for LED drivers"
606 depends on TWL4030_CORE
608 Generic PWM framework driver for TWL4030/6030 LED terminals.
610 To compile this driver as a module, choose M here: the module
611 will be called pwm-twl-led.
614 tristate "vt8500 PWM support"
615 depends on ARCH_VT8500 || COMPILE_TEST
618 Generic PWM framework driver for vt8500.
620 To compile this driver as a module, choose M here: the module
621 will be called pwm-vt8500.