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 tristate "Intel Crystalcove (CRC) PWM support"
177 depends on 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
193 PWM driver for Synopsys DWC PWM Controller.
195 To compile this driver as a module, build the dependecies as
196 modules, this will be called pwm-dwc-core.
199 tristate "DesignWare PWM Controller (PCI bus)"
200 depends on HAS_IOMEM && PCI
203 PWM driver for Synopsys DWC PWM Controller attached to a PCI bus.
205 To compile this driver as a module, choose M here: the module
206 will be called pwm-dwc.
209 tristate "Cirrus Logic EP93xx PWM support"
210 depends on ARCH_EP93XX || COMPILE_TEST
213 Generic PWM framework driver for Cirrus Logic EP93xx.
215 To compile this driver as a module, choose M here: the module
216 will be called pwm-ep93xx.
219 tristate "Freescale FlexTimer Module (FTM) PWM support"
224 Generic FTM PWM framework driver for Freescale VF610 and
225 Layerscape LS-1 SoCs.
227 To compile this driver as a module, choose M here: the module
228 will be called pwm-fsl-ftm.
231 tristate "HiSilicon BVT PWM support"
232 depends on ARCH_HISI || COMPILE_TEST
235 Generic PWM framework driver for HiSilicon BVT SoCs.
237 To compile this driver as a module, choose M here: the module
238 will be called pwm-hibvt.
241 tristate "Imagination Technologies PWM driver"
243 depends on MFD_SYSCON
244 depends on COMMON_CLK
245 depends on MIPS || COMPILE_TEST
247 Generic PWM framework driver for Imagination Technologies
248 PWM block which supports 4 channels.
250 To compile this driver as a module, choose M here: the module
251 will be called pwm-img
254 tristate "i.MX1 PWM support"
255 depends on ARCH_MXC || COMPILE_TEST
258 Generic PWM framework driver for i.MX1 and i.MX21
260 To compile this driver as a module, choose M here: the module
261 will be called pwm-imx1.
264 tristate "i.MX27 PWM support"
265 depends on ARCH_MXC || COMPILE_TEST
268 Generic PWM framework driver for i.MX27 and later i.MX SoCs.
270 To compile this driver as a module, choose M here: the module
271 will be called pwm-imx27.
274 tristate "i.MX TPM PWM support"
275 depends on ARCH_MXC || COMPILE_TEST
276 depends on HAVE_CLK && HAS_IOMEM
278 Generic PWM framework driver for i.MX7ULP TPM module, TPM's full
279 name is Low Power Timer/Pulse Width Modulation Module.
281 To compile this driver as a module, choose M here: the module
282 will be called pwm-imx-tpm.
285 tristate "Intel LGM PWM support"
287 depends on (OF && X86) || COMPILE_TEST
290 Generic PWM fan controller driver for LGM SoC.
292 To compile this driver as a module, choose M here: the module
293 will be called pwm-intel-lgm.
296 tristate "Azoteq IQS620A PWM support"
297 depends on MFD_IQS62X || COMPILE_TEST
299 Generic PWM framework driver for the Azoteq IQS620A multi-function
302 To compile this driver as a module, choose M here: the module will
303 be called pwm-iqs620a.
306 tristate "Ingenic JZ47xx PWM support"
307 depends on MACH_INGENIC || COMPILE_TEST
308 depends on COMMON_CLK && OF
311 Generic PWM framework driver for Ingenic JZ47xx based
314 To compile this driver as a module, choose M here: the module
315 will be called pwm-jz4740.
318 tristate "Intel Keem Bay PWM driver"
319 depends on ARCH_KEEMBAY || COMPILE_TEST
320 depends on COMMON_CLK && HAS_IOMEM
322 The platform driver for Intel Keem Bay PWM controller.
324 To compile this driver as a module, choose M here: the module
325 will be called pwm-keembay.
328 tristate "TI/National Semiconductor LP3943 PWM support"
329 depends on MFD_LP3943
331 Generic PWM framework driver for LP3943 which supports two PWM
334 To compile this driver as a module, choose M here: the module
335 will be called pwm-lp3943.
337 config PWM_LPC18XX_SCT
338 tristate "LPC18xx/43xx PWM/SCT support"
339 depends on ARCH_LPC18XX || COMPILE_TEST
342 Generic PWM framework driver for NXP LPC18xx PWM/SCT which
343 supports 16 channels.
344 A maximum of 15 channels can be requested simultaneously and
345 must have the same period.
347 To compile this driver as a module, choose M here: the module
348 will be called pwm-lpc18xx-sct.
351 tristate "LPC32XX PWM support"
352 depends on ARCH_LPC32XX || COMPILE_TEST
355 Generic PWM framework driver for LPC32XX. The LPC32XX SOC has two
358 To compile this driver as a module, choose M here: the module
359 will be called pwm-lpc32xx.
366 tristate "Intel LPSS PWM PCI driver"
367 depends on X86 || COMPILE_TEST
368 depends on HAS_IOMEM && PCI
371 The PCI driver for Intel Low Power Subsystem PWM controller.
373 To compile this driver as a module, choose M here: the module
374 will be called pwm-lpss-pci.
376 config PWM_LPSS_PLATFORM
377 tristate "Intel LPSS PWM platform driver"
378 depends on (X86 && ACPI) || COMPILE_TEST
382 The platform driver for Intel Low Power Subsystem PWM controller.
384 To compile this driver as a module, choose M here: the module
385 will be called pwm-lpss-platform.
388 tristate "Amlogic Meson PWM driver"
389 depends on ARCH_MESON || COMPILE_TEST
390 depends on COMMON_CLK && HAS_IOMEM
392 The platform driver for Amlogic Meson PWM controller.
394 To compile this driver as a module, choose M here: the module
395 will be called pwm-meson.
398 tristate "MediaTek display PWM driver"
399 depends on ARCH_MEDIATEK || COMPILE_TEST
402 Generic PWM framework driver for MediaTek disp-pwm device.
403 The PWM is used to control the backlight brightness for display.
405 To compile this driver as a module, choose M here: the module
406 will be called pwm-mtk-disp.
409 tristate "MediaTek PWM support"
410 depends on ARCH_MEDIATEK || RALINK || COMPILE_TEST
413 Generic PWM framework driver for Mediatek ARM SoC.
415 To compile this driver as a module, choose M here: the module
416 will be called pwm-mediatek.
418 config PWM_MICROCHIP_CORE
419 tristate "Microchip corePWM PWM support"
420 depends on ARCH_MICROCHIP_POLARFIRE || COMPILE_TEST
421 depends on HAS_IOMEM && OF
423 PWM driver for Microchip FPGA soft IP core.
425 To compile this driver as a module, choose M here: the module
426 will be called pwm-microchip-core.
429 tristate "Freescale MXS PWM support"
430 depends on ARCH_MXS || COMPILE_TEST
431 depends on HAS_IOMEM && OF
434 Generic PWM framework driver for Freescale MXS.
436 To compile this driver as a module, choose M here: the module
437 will be called pwm-mxs.
440 tristate "Netronix embedded controller PWM support"
443 Say yes here if you want to support the PWM output of the embedded
444 controller found in certain e-book readers designed by the original
445 design manufacturer Netronix.
447 config PWM_OMAP_DMTIMER
448 tristate "OMAP Dual-Mode Timer PWM support"
450 depends on OMAP_DM_TIMER || COMPILE_TEST
452 Generic PWM framework driver for OMAP Dual-Mode Timer PWM output
454 To compile this driver as a module, choose M here: the module
455 will be called pwm-omap-dmtimer
458 tristate "NXP PCA9685 PWM driver"
462 Generic PWM framework driver for NXP PCA9685 LED controller.
464 To compile this driver as a module, choose M here: the module
465 will be called pwm-pca9685.
468 tristate "PXA PWM support"
469 depends on ARCH_PXA || ARCH_MMP || COMPILE_TEST
472 Generic PWM framework driver for PXA.
474 To compile this driver as a module, choose M here: the module
475 will be called pwm-pxa.
477 config PWM_RASPBERRYPI_POE
478 tristate "Raspberry Pi Firwmware PoE Hat PWM support"
479 # Make sure not 'y' when RASPBERRYPI_FIRMWARE is 'm'. This can only
480 # happen when COMPILE_TEST=y, hence the added !RASPBERRYPI_FIRMWARE.
481 depends on RASPBERRYPI_FIRMWARE || (COMPILE_TEST && !RASPBERRYPI_FIRMWARE)
483 Enable Raspberry Pi firmware controller PWM bus used to control the
487 tristate "Renesas R-Car PWM support"
488 depends on ARCH_RENESAS || COMPILE_TEST
491 This driver exposes the PWM Timer controller found in Renesas
492 R-Car chips through the PWM API.
494 To compile this driver as a module, choose M here: the module
495 will be called pwm-rcar.
497 config PWM_RENESAS_TPU
498 tristate "Renesas TPU PWM support"
499 depends on ARCH_RENESAS || COMPILE_TEST
502 This driver exposes the Timer Pulse Unit (TPU) PWM controller found
503 in Renesas chips through the PWM API.
505 To compile this driver as a module, choose M here: the module
506 will be called pwm-renesas-tpu.
509 tristate "Rockchip PWM support"
510 depends on ARCH_ROCKCHIP || COMPILE_TEST
513 Generic PWM framework driver for the PWM controller found on
517 tristate "Renesas RZ/G2L MTU3a PWM Timer support"
521 This driver exposes the MTU3a PWM Timer controller found in Renesas
522 RZ/G2L like chips through the PWM API.
524 To compile this driver as a module, choose M here: the module
525 will be called pwm-rz-mtu3.
528 tristate "Samsung PWM support"
529 depends on PLAT_SAMSUNG || ARCH_S5PV210 || ARCH_EXYNOS || COMPILE_TEST
532 Generic PWM framework driver for Samsung S3C24xx, S3C64xx, S5Pv210
534 Choose Y here only if you build for such Samsung SoC.
536 To compile this driver as a module, choose M here: the module
537 will be called pwm-samsung.
540 tristate "SiFive PWM support"
542 depends on COMMON_CLK && HAS_IOMEM
543 depends on RISCV || COMPILE_TEST
545 Generic PWM framework driver for SiFive SoCs.
547 To compile this driver as a module, choose M here: the module
548 will be called pwm-sifive.
551 tristate "Kontron sl28cpld PWM support"
552 depends on MFD_SL28CPLD || COMPILE_TEST
554 Generic PWM framework driver for board management controller
555 found on the Kontron sl28 CPLD.
557 To compile this driver as a module, choose M here: the module
558 will be called pwm-sl28cpld.
561 tristate "STMicroelectronics SPEAr PWM support"
562 depends on PLAT_SPEAR || COMPILE_TEST
563 depends on HAS_IOMEM && OF
565 Generic PWM framework driver for the PWM controller on ST
568 To compile this driver as a module, choose M here: the module
569 will be called pwm-spear.
572 tristate "Spreadtrum PWM support"
573 depends on ARCH_SPRD || COMPILE_TEST
576 Generic PWM framework driver for the PWM controller on
579 To compile this driver as a module, choose M here: the module
580 will be called pwm-sprd.
583 tristate "STiH4xx PWM support"
584 depends on ARCH_STI || COMPILE_TEST
585 depends on HAS_IOMEM && OF
587 Generic PWM framework driver for STiH4xx SoCs.
589 To compile this driver as a module, choose M here: the module
590 will be called pwm-sti.
593 tristate "STMicroelectronics STM32 PWM"
594 depends on MFD_STM32_TIMERS || COMPILE_TEST
596 Generic PWM framework driver for STM32 SoCs.
598 To compile this driver as a module, choose M here: the module
599 will be called pwm-stm32.
602 tristate "STMicroelectronics STM32 PWM LP"
603 depends on MFD_STM32_LPTIMER || COMPILE_TEST
605 Generic PWM framework driver for STMicroelectronics STM32 SoCs
606 with Low-Power Timer (LPTIM).
608 To compile this driver as a module, choose M here: the module
609 will be called pwm-stm32-lp.
612 bool "STMPE expander PWM export"
615 This enables support for the PWMs found in the STMPE I/O
619 tristate "Allwinner PWM support"
620 depends on ARCH_SUNXI || COMPILE_TEST
621 depends on HAS_IOMEM && COMMON_CLK
623 Generic PWM framework driver for Allwinner SoCs.
625 To compile this driver as a module, choose M here: the module
626 will be called pwm-sun4i.
629 tristate "Sunplus PWM support"
630 depends on ARCH_SUNPLUS || COMPILE_TEST
631 depends on HAS_IOMEM && OF
633 Generic PWM framework driver for the PWM controller on
636 To compile this driver as a module, choose M here: the module
637 will be called pwm-sunplus.
640 tristate "NVIDIA Tegra PWM support"
641 depends on ARCH_TEGRA || COMPILE_TEST
644 Generic PWM framework driver for the PWFM controller found on NVIDIA
647 To compile this driver as a module, choose M here: the module
648 will be called pwm-tegra.
651 tristate "ECAP PWM support"
652 depends on ARCH_OMAP2PLUS || ARCH_DAVINCI_DA8XX || ARCH_KEYSTONE || ARCH_K3 || COMPILE_TEST
655 PWM driver support for the ECAP APWM controller found on TI SOCs
657 To compile this driver as a module, choose M here: the module
658 will be called pwm-tiecap.
661 tristate "EHRPWM PWM support"
662 depends on ARCH_OMAP2PLUS || ARCH_DAVINCI_DA8XX || ARCH_K3 || COMPILE_TEST
665 PWM driver support for the EHRPWM controller found on TI SOCs
667 To compile this driver as a module, choose M here: the module
668 will be called pwm-tiehrpwm.
671 tristate "TWL4030/6030 PWM support"
672 depends on TWL4030_CORE
674 Generic PWM framework driver for TWL4030/6030.
676 To compile this driver as a module, choose M here: the module
677 will be called pwm-twl.
680 tristate "TWL4030/6030 PWM support for LED drivers"
681 depends on TWL4030_CORE
683 Generic PWM framework driver for TWL4030/6030 LED terminals.
685 To compile this driver as a module, choose M here: the module
686 will be called pwm-twl-led.
689 tristate "Toshiba Visconti PWM support"
690 depends on ARCH_VISCONTI || COMPILE_TEST
692 PWM Subsystem driver support for Toshiba Visconti SoCs.
694 To compile this driver as a module, choose M here: the module
695 will be called pwm-visconti.
698 tristate "vt8500 PWM support"
699 depends on ARCH_VT8500 || COMPILE_TEST
702 Generic PWM framework driver for vt8500.
704 To compile this driver as a module, choose M here: the module
705 will be called pwm-vt8500.
708 tristate "Xilinx AXI Timer PWM support"
709 depends on OF_ADDRESS
710 depends on COMMON_CLK
713 PWM driver for Xilinx LogiCORE IP AXI timers. This timer is
714 typically a soft core which may be present in Xilinx FPGAs.
715 This device may also be present in Microblaze soft processors.
716 If you don't have this IP in your design, choose N.
718 To compile this driver as a module, choose M here: the module
719 will be called pwm-xilinx.