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"
275 depends on MIPS || COMPILE_TEST
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 || COMPILE_TEST
288 depends on COMMON_CLK && HAS_IOMEM
290 The platform driver for Intel Keem Bay PWM controller.
292 To compile this driver as a module, choose M here: the module
293 will be called pwm-keembay.
296 tristate "TI/National Semiconductor LP3943 PWM support"
297 depends on MFD_LP3943
299 Generic PWM framework driver for LP3943 which supports two PWM
302 To compile this driver as a module, choose M here: the module
303 will be called pwm-lp3943.
305 config PWM_LPC18XX_SCT
306 tristate "LPC18xx/43xx PWM/SCT support"
307 depends on ARCH_LPC18XX || COMPILE_TEST
310 Generic PWM framework driver for NXP LPC18xx PWM/SCT which
311 supports 16 channels.
312 A maximum of 15 channels can be requested simultaneously and
313 must have the same period.
315 To compile this driver as a module, choose M here: the module
316 will be called pwm-lpc18xx-sct.
319 tristate "LPC32XX PWM support"
320 depends on ARCH_LPC32XX || COMPILE_TEST
323 Generic PWM framework driver for LPC32XX. The LPC32XX SOC has two
326 To compile this driver as a module, choose M here: the module
327 will be called pwm-lpc32xx.
334 tristate "Intel LPSS PWM PCI driver"
335 depends on X86 || COMPILE_TEST
336 depends on HAS_IOMEM && PCI
339 The PCI driver for Intel Low Power Subsystem PWM controller.
341 To compile this driver as a module, choose M here: the module
342 will be called pwm-lpss-pci.
344 config PWM_LPSS_PLATFORM
345 tristate "Intel LPSS PWM platform driver"
346 depends on (X86 && ACPI) || COMPILE_TEST
350 The platform driver for Intel Low Power Subsystem PWM controller.
352 To compile this driver as a module, choose M here: the module
353 will be called pwm-lpss-platform.
356 tristate "Amlogic Meson PWM driver"
357 depends on ARCH_MESON || COMPILE_TEST
358 depends on COMMON_CLK && HAS_IOMEM
360 The platform driver for Amlogic Meson PWM controller.
362 To compile this driver as a module, choose M here: the module
363 will be called pwm-meson.
366 tristate "MediaTek display PWM driver"
367 depends on ARCH_MEDIATEK || COMPILE_TEST
370 Generic PWM framework driver for MediaTek disp-pwm device.
371 The PWM is used to control the backlight brightness for display.
373 To compile this driver as a module, choose M here: the module
374 will be called pwm-mtk-disp.
377 tristate "MediaTek PWM support"
378 depends on ARCH_MEDIATEK || RALINK || COMPILE_TEST
381 Generic PWM framework driver for Mediatek ARM SoC.
383 To compile this driver as a module, choose M here: the module
384 will be called pwm-mediatek.
387 tristate "Freescale MXS PWM support"
388 depends on ARCH_MXS || COMPILE_TEST
389 depends on HAS_IOMEM && OF
392 Generic PWM framework driver for Freescale MXS.
394 To compile this driver as a module, choose M here: the module
395 will be called pwm-mxs.
398 tristate "Netronix embedded controller PWM support"
401 Say yes here if you want to support the PWM output of the embedded
402 controller found in certain e-book readers designed by the original
403 design manufacturer Netronix.
405 config PWM_OMAP_DMTIMER
406 tristate "OMAP Dual-Mode Timer PWM support"
408 depends on OMAP_DM_TIMER || COMPILE_TEST
410 Generic PWM framework driver for OMAP Dual-Mode Timer PWM output
412 To compile this driver as a module, choose M here: the module
413 will be called pwm-omap-dmtimer
416 tristate "NXP PCA9685 PWM driver"
420 Generic PWM framework driver for NXP PCA9685 LED controller.
422 To compile this driver as a module, choose M here: the module
423 will be called pwm-pca9685.
426 tristate "PXA PWM support"
427 depends on ARCH_PXA || COMPILE_TEST
430 Generic PWM framework driver for PXA.
432 To compile this driver as a module, choose M here: the module
433 will be called pwm-pxa.
435 config PWM_RASPBERRYPI_POE
436 tristate "Raspberry Pi Firwmware PoE Hat PWM support"
437 # Make sure not 'y' when RASPBERRYPI_FIRMWARE is 'm'. This can only
438 # happen when COMPILE_TEST=y, hence the added !RASPBERRYPI_FIRMWARE.
439 depends on RASPBERRYPI_FIRMWARE || (COMPILE_TEST && !RASPBERRYPI_FIRMWARE)
441 Enable Raspberry Pi firmware controller PWM bus used to control the
445 tristate "Renesas R-Car PWM support"
446 depends on ARCH_RENESAS || COMPILE_TEST
449 This driver exposes the PWM Timer controller found in Renesas
450 R-Car chips through the PWM API.
452 To compile this driver as a module, choose M here: the module
453 will be called pwm-rcar.
455 config PWM_RENESAS_TPU
456 tristate "Renesas TPU PWM support"
457 depends on ARCH_RENESAS || COMPILE_TEST
460 This driver exposes the Timer Pulse Unit (TPU) PWM controller found
461 in Renesas chips through the PWM API.
463 To compile this driver as a module, choose M here: the module
464 will be called pwm-renesas-tpu.
467 tristate "Rockchip PWM support"
468 depends on ARCH_ROCKCHIP || COMPILE_TEST
471 Generic PWM framework driver for the PWM controller found on
475 tristate "Samsung PWM support"
476 depends on PLAT_SAMSUNG || ARCH_S5PV210 || ARCH_EXYNOS || COMPILE_TEST
479 Generic PWM framework driver for Samsung.
481 To compile this driver as a module, choose M here: the module
482 will be called pwm-samsung.
485 tristate "SiFive PWM support"
487 depends on COMMON_CLK && HAS_IOMEM
488 depends on RISCV || COMPILE_TEST
490 Generic PWM framework driver for SiFive SoCs.
492 To compile this driver as a module, choose M here: the module
493 will be called pwm-sifive.
496 tristate "Kontron sl28cpld PWM support"
497 depends on MFD_SL28CPLD || COMPILE_TEST
499 Generic PWM framework driver for board management controller
500 found on the Kontron sl28 CPLD.
502 To compile this driver as a module, choose M here: the module
503 will be called pwm-sl28cpld.
506 tristate "STMicroelectronics SPEAr PWM support"
507 depends on PLAT_SPEAR || COMPILE_TEST
508 depends on HAS_IOMEM && OF
510 Generic PWM framework driver for the PWM controller on ST
513 To compile this driver as a module, choose M here: the module
514 will be called pwm-spear.
517 tristate "Spreadtrum PWM support"
518 depends on ARCH_SPRD || COMPILE_TEST
521 Generic PWM framework driver for the PWM controller on
524 To compile this driver as a module, choose M here: the module
525 will be called pwm-sprd.
528 tristate "STiH4xx PWM support"
529 depends on ARCH_STI || COMPILE_TEST
530 depends on HAS_IOMEM && OF
532 Generic PWM framework driver for STiH4xx SoCs.
534 To compile this driver as a module, choose M here: the module
535 will be called pwm-sti.
538 tristate "STMicroelectronics STM32 PWM"
539 depends on MFD_STM32_TIMERS || COMPILE_TEST
541 Generic PWM framework driver for STM32 SoCs.
543 To compile this driver as a module, choose M here: the module
544 will be called pwm-stm32.
547 tristate "STMicroelectronics STM32 PWM LP"
548 depends on MFD_STM32_LPTIMER || COMPILE_TEST
550 Generic PWM framework driver for STMicroelectronics STM32 SoCs
551 with Low-Power Timer (LPTIM).
553 To compile this driver as a module, choose M here: the module
554 will be called pwm-stm32-lp.
557 bool "STMPE expander PWM export"
560 This enables support for the PWMs found in the STMPE I/O
564 tristate "Allwinner PWM support"
565 depends on ARCH_SUNXI || COMPILE_TEST
566 depends on HAS_IOMEM && COMMON_CLK
568 Generic PWM framework driver for Allwinner SoCs.
570 To compile this driver as a module, choose M here: the module
571 will be called pwm-sun4i.
574 tristate "NVIDIA Tegra PWM support"
575 depends on ARCH_TEGRA || COMPILE_TEST
578 Generic PWM framework driver for the PWFM controller found on NVIDIA
581 To compile this driver as a module, choose M here: the module
582 will be called pwm-tegra.
585 tristate "ECAP PWM support"
586 depends on ARCH_OMAP2PLUS || ARCH_DAVINCI_DA8XX || ARCH_KEYSTONE || ARCH_K3 || COMPILE_TEST
589 PWM driver support for the ECAP APWM controller found on TI SOCs
591 To compile this driver as a module, choose M here: the module
592 will be called pwm-tiecap.
595 tristate "EHRPWM PWM support"
596 depends on ARCH_OMAP2PLUS || ARCH_DAVINCI_DA8XX || ARCH_K3 || COMPILE_TEST
599 PWM driver support for the EHRPWM controller found on TI SOCs
601 To compile this driver as a module, choose M here: the module
602 will be called pwm-tiehrpwm.
605 tristate "TWL4030/6030 PWM support"
606 depends on TWL4030_CORE
608 Generic PWM framework driver for TWL4030/6030.
610 To compile this driver as a module, choose M here: the module
611 will be called pwm-twl.
614 tristate "TWL4030/6030 PWM support for LED drivers"
615 depends on TWL4030_CORE
617 Generic PWM framework driver for TWL4030/6030 LED terminals.
619 To compile this driver as a module, choose M here: the module
620 will be called pwm-twl-led.
623 tristate "Toshiba Visconti PWM support"
624 depends on ARCH_VISCONTI || COMPILE_TEST
626 PWM Subsystem driver support for Toshiba Visconti SoCs.
628 To compile this driver as a module, choose M here: the module
629 will be called pwm-visconti.
632 tristate "vt8500 PWM support"
633 depends on ARCH_VT8500 || COMPILE_TEST
636 Generic PWM framework driver for vt8500.
638 To compile this driver as a module, choose M here: the module
639 will be called pwm-vt8500.