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 "Apple SoC PWM support"
56 depends on ARCH_APPLE || COMPILE_TEST
58 Generic PWM framework driver for PWM controller present on
61 Say Y here if you have an ARM Apple laptop, otherwise say N
63 To compile this driver as a module, choose M here: the module
64 will be called pwm-apple.
67 tristate "Atmel PWM support"
68 depends on ARCH_AT91 || COMPILE_TEST
69 depends on HAS_IOMEM && OF
71 Generic PWM framework driver for Atmel SoC.
73 To compile this driver as a module, choose M here: the module
74 will be called pwm-atmel.
76 config PWM_ATMEL_HLCDC_PWM
77 tristate "Atmel HLCDC PWM support"
78 depends on MFD_ATMEL_HLCDC
81 Generic PWM framework driver for the PWM output of the HLCDC
82 (Atmel High-end LCD Controller). This PWM output is mainly used
83 to control the LCD backlight.
85 To compile this driver as a module, choose M here: the module
86 will be called pwm-atmel-hlcdc.
89 tristate "Atmel TC Block PWM support"
93 Generic PWM framework driver for Atmel Timer Counter Block.
95 A Timer Counter Block provides 6 PWM devices grouped by 2.
96 Devices in a given group must have the same period.
98 To compile this driver as a module, choose M here: the module
99 will be called pwm-atmel-tcb.
102 tristate "iProc PWM support"
103 depends on ARCH_BCM_IPROC || COMPILE_TEST
104 depends on COMMON_CLK && HAS_IOMEM
105 default ARCH_BCM_IPROC
107 Generic PWM framework driver for Broadcom iProc PWM block. This
108 block is used in Broadcom iProc SoC's.
110 To compile this driver as a module, choose M here: the module
111 will be called pwm-bcm-iproc.
114 tristate "Kona PWM support"
115 depends on ARCH_BCM_MOBILE || ARCH_BCM_CYGNUS || COMPILE_TEST
116 depends on HAVE_CLK && HAS_IOMEM
117 default ARCH_BCM_MOBILE || ARCH_BCM_CYGNUS
119 Generic PWM framework driver for Broadcom Kona PWM block.
121 To compile this driver as a module, choose M here: the module
122 will be called pwm-bcm-kona.
125 tristate "BCM2835 PWM support"
126 depends on ARCH_BCM2835 || ARCH_BRCMSTB || COMPILE_TEST
129 PWM framework driver for BCM2835 controller (Raspberry Pi)
131 To compile this driver as a module, choose M here: the module
132 will be called pwm-bcm2835.
135 tristate "Marvell Berlin PWM support"
136 depends on ARCH_BERLIN || COMPILE_TEST
139 PWM framework driver for Marvell Berlin SoCs.
141 To compile this driver as a module, choose M here: the module
142 will be called pwm-berlin.
145 tristate "Broadcom STB PWM support"
146 depends on ARCH_BRCMSTB || BMIPS_GENERIC || COMPILE_TEST
149 Generic PWM framework driver for the Broadcom Set-top-Box
152 To compile this driver as a module, choose M Here: the module
153 will be called pwm-brcmstb.c.
156 tristate "Clock based PWM support"
157 depends on HAVE_CLK || COMPILE_TEST
159 Generic PWM framework driver for outputs that can be
162 To compile this driver as a module, choose M here: the module
163 will be called pwm-clk.
166 tristate "CLPS711X PWM support"
167 depends on ARCH_CLPS711X || COMPILE_TEST
170 Generic PWM framework driver for Cirrus Logic CLPS711X.
172 To compile this driver as a module, choose M here: the module
173 will be called pwm-clps711x.
176 bool "Intel Crystalcove (CRC) PWM support"
177 depends on X86 && INTEL_SOC_PMIC
179 Generic PWM framework driver for Crystalcove (CRC) PMIC based PWM
183 tristate "ChromeOS EC PWM driver"
186 PWM driver for exposing a PWM attached to the ChromeOS Embedded
190 tristate "DesignWare PWM Controller"
193 PWM driver for Synopsys DWC PWM Controller attached to a PCI bus.
195 To compile this driver as a module, choose M here: the module
196 will be called pwm-dwc.
199 tristate "Cirrus Logic EP93xx PWM support"
200 depends on ARCH_EP93XX || COMPILE_TEST
203 Generic PWM framework driver for Cirrus Logic EP93xx.
205 To compile this driver as a module, choose M here: the module
206 will be called pwm-ep93xx.
209 tristate "Freescale FlexTimer Module (FTM) PWM support"
214 Generic FTM PWM framework driver for Freescale VF610 and
215 Layerscape LS-1 SoCs.
217 To compile this driver as a module, choose M here: the module
218 will be called pwm-fsl-ftm.
221 tristate "HiSilicon BVT PWM support"
222 depends on ARCH_HISI || COMPILE_TEST
225 Generic PWM framework driver for HiSilicon BVT SoCs.
227 To compile this driver as a module, choose M here: the module
228 will be called pwm-hibvt.
231 tristate "Imagination Technologies PWM driver"
233 depends on MFD_SYSCON
234 depends on COMMON_CLK
235 depends on MIPS || COMPILE_TEST
237 Generic PWM framework driver for Imagination Technologies
238 PWM block which supports 4 channels.
240 To compile this driver as a module, choose M here: the module
241 will be called pwm-img
244 tristate "i.MX1 PWM support"
245 depends on ARCH_MXC || COMPILE_TEST
248 Generic PWM framework driver for i.MX1 and i.MX21
250 To compile this driver as a module, choose M here: the module
251 will be called pwm-imx1.
254 tristate "i.MX27 PWM support"
255 depends on ARCH_MXC || COMPILE_TEST
258 Generic PWM framework driver for i.MX27 and later i.MX SoCs.
260 To compile this driver as a module, choose M here: the module
261 will be called pwm-imx27.
264 tristate "i.MX TPM PWM support"
265 depends on ARCH_MXC || COMPILE_TEST
266 depends on HAVE_CLK && HAS_IOMEM
268 Generic PWM framework driver for i.MX7ULP TPM module, TPM's full
269 name is Low Power Timer/Pulse Width Modulation Module.
271 To compile this driver as a module, choose M here: the module
272 will be called pwm-imx-tpm.
275 tristate "Intel LGM PWM support"
277 depends on (OF && X86) || COMPILE_TEST
280 Generic PWM fan controller driver for LGM SoC.
282 To compile this driver as a module, choose M here: the module
283 will be called pwm-intel-lgm.
286 tristate "Azoteq IQS620A PWM support"
287 depends on MFD_IQS62X || COMPILE_TEST
289 Generic PWM framework driver for the Azoteq IQS620A multi-function
292 To compile this driver as a module, choose M here: the module will
293 be called pwm-iqs620a.
296 tristate "Ingenic JZ47xx PWM support"
297 depends on MACH_INGENIC || COMPILE_TEST
298 depends on COMMON_CLK && OF
301 Generic PWM framework driver for Ingenic JZ47xx based
304 To compile this driver as a module, choose M here: the module
305 will be called pwm-jz4740.
308 tristate "Intel Keem Bay PWM driver"
309 depends on ARCH_KEEMBAY || COMPILE_TEST
310 depends on COMMON_CLK && HAS_IOMEM
312 The platform driver for Intel Keem Bay PWM controller.
314 To compile this driver as a module, choose M here: the module
315 will be called pwm-keembay.
318 tristate "TI/National Semiconductor LP3943 PWM support"
319 depends on MFD_LP3943
321 Generic PWM framework driver for LP3943 which supports two PWM
324 To compile this driver as a module, choose M here: the module
325 will be called pwm-lp3943.
327 config PWM_LPC18XX_SCT
328 tristate "LPC18xx/43xx PWM/SCT support"
329 depends on ARCH_LPC18XX || COMPILE_TEST
332 Generic PWM framework driver for NXP LPC18xx PWM/SCT which
333 supports 16 channels.
334 A maximum of 15 channels can be requested simultaneously and
335 must have the same period.
337 To compile this driver as a module, choose M here: the module
338 will be called pwm-lpc18xx-sct.
341 tristate "LPC32XX PWM support"
342 depends on ARCH_LPC32XX || COMPILE_TEST
345 Generic PWM framework driver for LPC32XX. The LPC32XX SOC has two
348 To compile this driver as a module, choose M here: the module
349 will be called pwm-lpc32xx.
356 tristate "Intel LPSS PWM PCI driver"
357 depends on X86 || COMPILE_TEST
358 depends on HAS_IOMEM && PCI
361 The PCI driver for Intel Low Power Subsystem PWM controller.
363 To compile this driver as a module, choose M here: the module
364 will be called pwm-lpss-pci.
366 config PWM_LPSS_PLATFORM
367 tristate "Intel LPSS PWM platform driver"
368 depends on (X86 && ACPI) || COMPILE_TEST
372 The platform driver for Intel Low Power Subsystem PWM controller.
374 To compile this driver as a module, choose M here: the module
375 will be called pwm-lpss-platform.
378 tristate "Amlogic Meson PWM driver"
379 depends on ARCH_MESON || COMPILE_TEST
380 depends on COMMON_CLK && HAS_IOMEM
382 The platform driver for Amlogic Meson PWM controller.
384 To compile this driver as a module, choose M here: the module
385 will be called pwm-meson.
388 tristate "MediaTek display PWM driver"
389 depends on ARCH_MEDIATEK || COMPILE_TEST
392 Generic PWM framework driver for MediaTek disp-pwm device.
393 The PWM is used to control the backlight brightness for display.
395 To compile this driver as a module, choose M here: the module
396 will be called pwm-mtk-disp.
399 tristate "MediaTek PWM support"
400 depends on ARCH_MEDIATEK || RALINK || COMPILE_TEST
403 Generic PWM framework driver for Mediatek ARM SoC.
405 To compile this driver as a module, choose M here: the module
406 will be called pwm-mediatek.
408 config PWM_MICROCHIP_CORE
409 tristate "Microchip corePWM PWM support"
410 depends on SOC_MICROCHIP_POLARFIRE || COMPILE_TEST
411 depends on HAS_IOMEM && OF
413 PWM driver for Microchip FPGA soft IP core.
415 To compile this driver as a module, choose M here: the module
416 will be called pwm-microchip-core.
419 tristate "Freescale MXS PWM support"
420 depends on ARCH_MXS || COMPILE_TEST
421 depends on HAS_IOMEM && OF
424 Generic PWM framework driver for Freescale MXS.
426 To compile this driver as a module, choose M here: the module
427 will be called pwm-mxs.
430 tristate "Netronix embedded controller PWM support"
433 Say yes here if you want to support the PWM output of the embedded
434 controller found in certain e-book readers designed by the original
435 design manufacturer Netronix.
437 config PWM_OMAP_DMTIMER
438 tristate "OMAP Dual-Mode Timer PWM support"
440 depends on OMAP_DM_TIMER || COMPILE_TEST
442 Generic PWM framework driver for OMAP Dual-Mode Timer PWM output
444 To compile this driver as a module, choose M here: the module
445 will be called pwm-omap-dmtimer
448 tristate "NXP PCA9685 PWM driver"
452 Generic PWM framework driver for NXP PCA9685 LED controller.
454 To compile this driver as a module, choose M here: the module
455 will be called pwm-pca9685.
458 tristate "PXA PWM support"
459 depends on ARCH_PXA || ARCH_MMP || COMPILE_TEST
462 Generic PWM framework driver for PXA.
464 To compile this driver as a module, choose M here: the module
465 will be called pwm-pxa.
467 config PWM_RASPBERRYPI_POE
468 tristate "Raspberry Pi Firwmware PoE Hat PWM support"
469 # Make sure not 'y' when RASPBERRYPI_FIRMWARE is 'm'. This can only
470 # happen when COMPILE_TEST=y, hence the added !RASPBERRYPI_FIRMWARE.
471 depends on RASPBERRYPI_FIRMWARE || (COMPILE_TEST && !RASPBERRYPI_FIRMWARE)
473 Enable Raspberry Pi firmware controller PWM bus used to control the
477 tristate "RP1 PWM support"
478 depends on ARCH_BCM2835 || COMPILE_TEST
480 PWM framework driver for Raspberry Pi RP1 controller
482 To compile this driver as a module, choose M here: the module
483 will be called pwm-rp1.
486 tristate "Renesas R-Car PWM support"
487 depends on ARCH_RENESAS || COMPILE_TEST
490 This driver exposes the PWM Timer controller found in Renesas
491 R-Car chips through the PWM API.
493 To compile this driver as a module, choose M here: the module
494 will be called pwm-rcar.
496 config PWM_RENESAS_TPU
497 tristate "Renesas TPU PWM support"
498 depends on ARCH_RENESAS || COMPILE_TEST
501 This driver exposes the Timer Pulse Unit (TPU) PWM controller found
502 in Renesas chips through the PWM API.
504 To compile this driver as a module, choose M here: the module
505 will be called pwm-renesas-tpu.
508 tristate "Rockchip PWM support"
509 depends on ARCH_ROCKCHIP || COMPILE_TEST
512 Generic PWM framework driver for the PWM controller found on
516 tristate "Renesas RZ/G2L MTU3a PWM Timer support"
520 This driver exposes the MTU3a PWM Timer controller found in Renesas
521 RZ/G2L like chips through the PWM API.
523 To compile this driver as a module, choose M here: the module
524 will be called pwm-rz-mtu3.
527 tristate "Samsung PWM support"
528 depends on PLAT_SAMSUNG || ARCH_S5PV210 || ARCH_EXYNOS || COMPILE_TEST
531 Generic PWM framework driver for Samsung S3C24xx, S3C64xx, S5Pv210
533 Choose Y here only if you build for such Samsung SoC.
535 To compile this driver as a module, choose M here: the module
536 will be called pwm-samsung.
539 tristate "SiFive PWM support"
541 depends on COMMON_CLK && HAS_IOMEM
542 depends on RISCV || COMPILE_TEST
544 Generic PWM framework driver for SiFive SoCs.
546 To compile this driver as a module, choose M here: the module
547 will be called pwm-sifive.
550 tristate "Kontron sl28cpld PWM support"
551 depends on MFD_SL28CPLD || COMPILE_TEST
553 Generic PWM framework driver for board management controller
554 found on the Kontron sl28 CPLD.
556 To compile this driver as a module, choose M here: the module
557 will be called pwm-sl28cpld.
560 tristate "STMicroelectronics SPEAr PWM support"
561 depends on PLAT_SPEAR || COMPILE_TEST
562 depends on HAS_IOMEM && OF
564 Generic PWM framework driver for the PWM controller on ST
567 To compile this driver as a module, choose M here: the module
568 will be called pwm-spear.
571 tristate "Spreadtrum PWM support"
572 depends on ARCH_SPRD || COMPILE_TEST
575 Generic PWM framework driver for the PWM controller on
578 To compile this driver as a module, choose M here: the module
579 will be called pwm-sprd.
582 tristate "STiH4xx PWM support"
583 depends on ARCH_STI || COMPILE_TEST
584 depends on HAS_IOMEM && OF
586 Generic PWM framework driver for STiH4xx SoCs.
588 To compile this driver as a module, choose M here: the module
589 will be called pwm-sti.
592 tristate "STMicroelectronics STM32 PWM"
593 depends on MFD_STM32_TIMERS || COMPILE_TEST
595 Generic PWM framework driver for STM32 SoCs.
597 To compile this driver as a module, choose M here: the module
598 will be called pwm-stm32.
601 tristate "STMicroelectronics STM32 PWM LP"
602 depends on MFD_STM32_LPTIMER || COMPILE_TEST
604 Generic PWM framework driver for STMicroelectronics STM32 SoCs
605 with Low-Power Timer (LPTIM).
607 To compile this driver as a module, choose M here: the module
608 will be called pwm-stm32-lp.
611 bool "STMPE expander PWM export"
614 This enables support for the PWMs found in the STMPE I/O
618 tristate "Allwinner PWM support"
619 depends on ARCH_SUNXI || COMPILE_TEST
620 depends on HAS_IOMEM && COMMON_CLK
622 Generic PWM framework driver for Allwinner SoCs.
624 To compile this driver as a module, choose M here: the module
625 will be called pwm-sun4i.
628 tristate "Sunplus PWM support"
629 depends on ARCH_SUNPLUS || COMPILE_TEST
630 depends on HAS_IOMEM && OF
632 Generic PWM framework driver for the PWM controller on
635 To compile this driver as a module, choose M here: the module
636 will be called pwm-sunplus.
639 tristate "NVIDIA Tegra PWM support"
640 depends on ARCH_TEGRA || COMPILE_TEST
643 Generic PWM framework driver for the PWFM controller found on NVIDIA
646 To compile this driver as a module, choose M here: the module
647 will be called pwm-tegra.
650 tristate "ECAP PWM support"
651 depends on ARCH_OMAP2PLUS || ARCH_DAVINCI_DA8XX || ARCH_KEYSTONE || ARCH_K3 || COMPILE_TEST
654 PWM driver support for the ECAP APWM controller found on TI SOCs
656 To compile this driver as a module, choose M here: the module
657 will be called pwm-tiecap.
660 tristate "EHRPWM PWM support"
661 depends on ARCH_OMAP2PLUS || ARCH_DAVINCI_DA8XX || ARCH_K3 || COMPILE_TEST
664 PWM driver support for the EHRPWM controller found on TI SOCs
666 To compile this driver as a module, choose M here: the module
667 will be called pwm-tiehrpwm.
670 tristate "TWL4030/6030 PWM support"
671 depends on TWL4030_CORE
673 Generic PWM framework driver for TWL4030/6030.
675 To compile this driver as a module, choose M here: the module
676 will be called pwm-twl.
679 tristate "TWL4030/6030 PWM support for LED drivers"
680 depends on TWL4030_CORE
682 Generic PWM framework driver for TWL4030/6030 LED terminals.
684 To compile this driver as a module, choose M here: the module
685 will be called pwm-twl-led.
688 tristate "Toshiba Visconti PWM support"
689 depends on ARCH_VISCONTI || COMPILE_TEST
691 PWM Subsystem driver support for Toshiba Visconti SoCs.
693 To compile this driver as a module, choose M here: the module
694 will be called pwm-visconti.
697 tristate "vt8500 PWM support"
698 depends on ARCH_VT8500 || COMPILE_TEST
701 Generic PWM framework driver for vt8500.
703 To compile this driver as a module, choose M here: the module
704 will be called pwm-vt8500.
707 tristate "Xilinx AXI Timer PWM support"
708 depends on OF_ADDRESS
709 depends on COMMON_CLK
712 PWM driver for Xilinx LogiCORE IP AXI timers. This timer is
713 typically a soft core which may be present in Xilinx FPGAs.
714 This device may also be present in Microblaze soft processors.
715 If you don't have this IP in your design, choose N.
717 To compile this driver as a module, choose M here: the module
718 will be called pwm-xilinx.