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 S3C24xx, S3C64xx, S5Pv210
481 Choose Y here only if you build for such Samsung SoC.
483 To compile this driver as a module, choose M here: the module
484 will be called pwm-samsung.
487 tristate "SiFive PWM support"
489 depends on COMMON_CLK && HAS_IOMEM
490 depends on RISCV || COMPILE_TEST
492 Generic PWM framework driver for SiFive SoCs.
494 To compile this driver as a module, choose M here: the module
495 will be called pwm-sifive.
498 tristate "Kontron sl28cpld PWM support"
499 depends on MFD_SL28CPLD || COMPILE_TEST
501 Generic PWM framework driver for board management controller
502 found on the Kontron sl28 CPLD.
504 To compile this driver as a module, choose M here: the module
505 will be called pwm-sl28cpld.
508 tristate "STMicroelectronics SPEAr PWM support"
509 depends on PLAT_SPEAR || COMPILE_TEST
510 depends on HAS_IOMEM && OF
512 Generic PWM framework driver for the PWM controller on ST
515 To compile this driver as a module, choose M here: the module
516 will be called pwm-spear.
519 tristate "Spreadtrum PWM support"
520 depends on ARCH_SPRD || COMPILE_TEST
523 Generic PWM framework driver for the PWM controller on
526 To compile this driver as a module, choose M here: the module
527 will be called pwm-sprd.
530 tristate "STiH4xx PWM support"
531 depends on ARCH_STI || COMPILE_TEST
532 depends on HAS_IOMEM && OF
534 Generic PWM framework driver for STiH4xx SoCs.
536 To compile this driver as a module, choose M here: the module
537 will be called pwm-sti.
540 tristate "STMicroelectronics STM32 PWM"
541 depends on MFD_STM32_TIMERS || COMPILE_TEST
543 Generic PWM framework driver for STM32 SoCs.
545 To compile this driver as a module, choose M here: the module
546 will be called pwm-stm32.
549 tristate "STMicroelectronics STM32 PWM LP"
550 depends on MFD_STM32_LPTIMER || COMPILE_TEST
552 Generic PWM framework driver for STMicroelectronics STM32 SoCs
553 with Low-Power Timer (LPTIM).
555 To compile this driver as a module, choose M here: the module
556 will be called pwm-stm32-lp.
559 bool "STMPE expander PWM export"
562 This enables support for the PWMs found in the STMPE I/O
566 tristate "Allwinner PWM support"
567 depends on ARCH_SUNXI || COMPILE_TEST
568 depends on HAS_IOMEM && COMMON_CLK
570 Generic PWM framework driver for Allwinner SoCs.
572 To compile this driver as a module, choose M here: the module
573 will be called pwm-sun4i.
576 tristate "Sunplus PWM support"
577 depends on ARCH_SUNPLUS || COMPILE_TEST
578 depends on HAS_IOMEM && OF
580 Generic PWM framework driver for the PWM controller on
583 To compile this driver as a module, choose M here: the module
584 will be called pwm-sunplus.
587 tristate "NVIDIA Tegra PWM support"
588 depends on ARCH_TEGRA || COMPILE_TEST
591 Generic PWM framework driver for the PWFM controller found on NVIDIA
594 To compile this driver as a module, choose M here: the module
595 will be called pwm-tegra.
598 tristate "ECAP PWM support"
599 depends on ARCH_OMAP2PLUS || ARCH_DAVINCI_DA8XX || ARCH_KEYSTONE || ARCH_K3 || COMPILE_TEST
602 PWM driver support for the ECAP APWM controller found on TI SOCs
604 To compile this driver as a module, choose M here: the module
605 will be called pwm-tiecap.
608 tristate "EHRPWM PWM support"
609 depends on ARCH_OMAP2PLUS || ARCH_DAVINCI_DA8XX || ARCH_K3 || COMPILE_TEST
612 PWM driver support for the EHRPWM controller found on TI SOCs
614 To compile this driver as a module, choose M here: the module
615 will be called pwm-tiehrpwm.
618 tristate "TWL4030/6030 PWM support"
619 depends on TWL4030_CORE
621 Generic PWM framework driver for TWL4030/6030.
623 To compile this driver as a module, choose M here: the module
624 will be called pwm-twl.
627 tristate "TWL4030/6030 PWM support for LED drivers"
628 depends on TWL4030_CORE
630 Generic PWM framework driver for TWL4030/6030 LED terminals.
632 To compile this driver as a module, choose M here: the module
633 will be called pwm-twl-led.
636 tristate "Toshiba Visconti PWM support"
637 depends on ARCH_VISCONTI || COMPILE_TEST
639 PWM Subsystem driver support for Toshiba Visconti SoCs.
641 To compile this driver as a module, choose M here: the module
642 will be called pwm-visconti.
645 tristate "vt8500 PWM support"
646 depends on ARCH_VT8500 || COMPILE_TEST
649 Generic PWM framework driver for vt8500.
651 To compile this driver as a module, choose M here: the module
652 will be called pwm-vt8500.
655 tristate "Xilinx AXI Timer PWM support"
656 depends on OF_ADDRESS
657 depends on COMMON_CLK
660 PWM driver for Xilinx LogiCORE IP AXI timers. This timer is
661 typically a soft core which may be present in Xilinx FPGAs.
662 This device may also be present in Microblaze soft processors.
663 If you don't have this IP in your design, choose N.
665 To compile this driver as a module, choose M here: the module
666 will be called pwm-xilinx.