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.
33 bool "PWM lowlevel drivers additional checks and debug messages"
34 depends on DEBUG_KERNEL
36 This option enables some additional checks to help lowlevel driver
37 authors to get their callbacks implemented correctly.
38 It is expected to introduce some runtime overhead and diagnostic
39 output to the kernel log, so only enable while working on a driver.
42 tristate "AB8500 PWM support"
43 depends on AB8500_CORE && ARCH_U8500
45 Generic PWM framework driver for Analog Baseband AB8500.
47 To compile this driver as a module, choose M here: the module
48 will be called pwm-ab8500.
51 tristate "Apple SoC PWM support"
52 depends on ARCH_APPLE || COMPILE_TEST
54 Generic PWM framework driver for PWM controller present on
57 Say Y here if you have an ARM Apple laptop, otherwise say N
59 To compile this driver as a module, choose M here: the module
60 will be called pwm-apple.
63 tristate "Atmel PWM support"
64 depends on ARCH_AT91 || COMPILE_TEST
65 depends on HAS_IOMEM && OF
67 Generic PWM framework driver for Atmel SoC.
69 To compile this driver as a module, choose M here: the module
70 will be called pwm-atmel.
72 config PWM_ATMEL_HLCDC_PWM
73 tristate "Atmel HLCDC PWM support"
74 depends on MFD_ATMEL_HLCDC
77 Generic PWM framework driver for the PWM output of the HLCDC
78 (Atmel High-end LCD Controller). This PWM output is mainly used
79 to control the LCD backlight.
81 To compile this driver as a module, choose M here: the module
82 will be called pwm-atmel-hlcdc.
85 tristate "Atmel TC Block PWM support"
89 Generic PWM framework driver for Atmel Timer Counter Block.
91 A Timer Counter Block provides 6 PWM devices grouped by 2.
92 Devices in a given group must have the same period.
94 To compile this driver as a module, choose M here: the module
95 will be called pwm-atmel-tcb.
98 tristate "iProc PWM support"
99 depends on ARCH_BCM_IPROC || COMPILE_TEST
100 depends on COMMON_CLK && HAS_IOMEM
101 default ARCH_BCM_IPROC
103 Generic PWM framework driver for Broadcom iProc PWM block. This
104 block is used in Broadcom iProc SoC's.
106 To compile this driver as a module, choose M here: the module
107 will be called pwm-bcm-iproc.
110 tristate "Kona PWM support"
111 depends on ARCH_BCM_MOBILE || ARCH_BCM_CYGNUS || COMPILE_TEST
112 depends on HAVE_CLK && HAS_IOMEM
113 default ARCH_BCM_MOBILE || ARCH_BCM_CYGNUS
115 Generic PWM framework driver for Broadcom Kona PWM block.
117 To compile this driver as a module, choose M here: the module
118 will be called pwm-bcm-kona.
121 tristate "BCM2835 PWM support"
122 depends on ARCH_BCM2835 || ARCH_BRCMSTB || COMPILE_TEST
125 PWM framework driver for BCM2835 controller (Raspberry Pi)
127 To compile this driver as a module, choose M here: the module
128 will be called pwm-bcm2835.
131 tristate "Marvell Berlin PWM support"
132 depends on ARCH_BERLIN || COMPILE_TEST
135 PWM framework driver for Marvell Berlin SoCs.
137 To compile this driver as a module, choose M here: the module
138 will be called pwm-berlin.
141 tristate "Broadcom STB PWM support"
142 depends on ARCH_BRCMSTB || BMIPS_GENERIC || COMPILE_TEST
145 Generic PWM framework driver for the Broadcom Set-top-Box
148 To compile this driver as a module, choose M Here: the module
149 will be called pwm-brcmstb.c.
152 tristate "Clock based PWM support"
153 depends on HAVE_CLK || COMPILE_TEST
155 Generic PWM framework driver for outputs that can be
158 To compile this driver as a module, choose M here: the module
159 will be called pwm-clk.
162 tristate "CLPS711X PWM support"
163 depends on ARCH_CLPS711X || COMPILE_TEST
166 Generic PWM framework driver for Cirrus Logic CLPS711X.
168 To compile this driver as a module, choose M here: the module
169 will be called pwm-clps711x.
172 tristate "Intel Crystalcove (CRC) PWM support"
173 depends on INTEL_SOC_PMIC
175 Generic PWM framework driver for Crystalcove (CRC) PMIC based PWM
179 tristate "ChromeOS EC PWM driver"
182 PWM driver for exposing a PWM attached to the ChromeOS Embedded
189 PWM driver for Synopsys DWC PWM Controller.
191 To compile this driver as a module, build the dependecies as
192 modules, this will be called pwm-dwc-core.
195 tristate "DesignWare PWM Controller (PCI bus)"
196 depends on HAS_IOMEM && PCI
199 PWM driver for Synopsys DWC PWM Controller attached to a PCI bus.
201 To compile this driver as a module, choose M here: the module
202 will be called pwm-dwc.
205 tristate "Cirrus Logic EP93xx PWM support"
206 depends on ARCH_EP93XX || COMPILE_TEST
209 Generic PWM framework driver for Cirrus Logic EP93xx.
211 To compile this driver as a module, choose M here: the module
212 will be called pwm-ep93xx.
215 tristate "Freescale FlexTimer Module (FTM) PWM support"
220 Generic FTM PWM framework driver for Freescale VF610 and
221 Layerscape LS-1 SoCs.
223 To compile this driver as a module, choose M here: the module
224 will be called pwm-fsl-ftm.
227 tristate "HiSilicon BVT PWM support"
228 depends on ARCH_HISI || COMPILE_TEST
231 Generic PWM framework driver for HiSilicon BVT SoCs.
233 To compile this driver as a module, choose M here: the module
234 will be called pwm-hibvt.
237 tristate "Imagination Technologies PWM driver"
239 depends on MFD_SYSCON
240 depends on COMMON_CLK
241 depends on MIPS || COMPILE_TEST
243 Generic PWM framework driver for Imagination Technologies
244 PWM block which supports 4 channels.
246 To compile this driver as a module, choose M here: the module
247 will be called pwm-img
250 tristate "i.MX1 PWM support"
251 depends on ARCH_MXC || COMPILE_TEST
254 Generic PWM framework driver for i.MX1 and i.MX21
256 To compile this driver as a module, choose M here: the module
257 will be called pwm-imx1.
260 tristate "i.MX27 PWM support"
261 depends on ARCH_MXC || COMPILE_TEST
264 Generic PWM framework driver for i.MX27 and later i.MX SoCs.
266 To compile this driver as a module, choose M here: the module
267 will be called pwm-imx27.
270 tristate "i.MX TPM PWM support"
271 depends on ARCH_MXC || COMPILE_TEST
272 depends on HAVE_CLK && HAS_IOMEM
274 Generic PWM framework driver for i.MX7ULP TPM module, TPM's full
275 name is Low Power Timer/Pulse Width Modulation Module.
277 To compile this driver as a module, choose M here: the module
278 will be called pwm-imx-tpm.
281 tristate "Intel LGM PWM support"
283 depends on (OF && X86) || COMPILE_TEST
286 Generic PWM fan controller driver for LGM SoC.
288 To compile this driver as a module, choose M here: the module
289 will be called pwm-intel-lgm.
292 tristate "Azoteq IQS620A PWM support"
293 depends on MFD_IQS62X || COMPILE_TEST
295 Generic PWM framework driver for the Azoteq IQS620A multi-function
298 To compile this driver as a module, choose M here: the module will
299 be called pwm-iqs620a.
302 tristate "Ingenic JZ47xx PWM support"
303 depends on MACH_INGENIC || COMPILE_TEST
304 depends on COMMON_CLK && OF
307 Generic PWM framework driver for Ingenic JZ47xx based
310 To compile this driver as a module, choose M here: the module
311 will be called pwm-jz4740.
314 tristate "Intel Keem Bay PWM driver"
315 depends on ARCH_KEEMBAY || COMPILE_TEST
316 depends on COMMON_CLK && HAS_IOMEM
318 The platform driver for Intel Keem Bay PWM controller.
320 To compile this driver as a module, choose M here: the module
321 will be called pwm-keembay.
324 tristate "TI/National Semiconductor LP3943 PWM support"
325 depends on MFD_LP3943
327 Generic PWM framework driver for LP3943 which supports two PWM
330 To compile this driver as a module, choose M here: the module
331 will be called pwm-lp3943.
333 config PWM_LPC18XX_SCT
334 tristate "LPC18xx/43xx PWM/SCT support"
335 depends on ARCH_LPC18XX || COMPILE_TEST
338 Generic PWM framework driver for NXP LPC18xx PWM/SCT which
339 supports 16 channels.
340 A maximum of 15 channels can be requested simultaneously and
341 must have the same period.
343 To compile this driver as a module, choose M here: the module
344 will be called pwm-lpc18xx-sct.
347 tristate "LPC32XX PWM support"
348 depends on ARCH_LPC32XX || COMPILE_TEST
351 Generic PWM framework driver for LPC32XX. The LPC32XX SOC has two
354 To compile this driver as a module, choose M here: the module
355 will be called pwm-lpc32xx.
362 tristate "Intel LPSS PWM PCI driver"
363 depends on X86 || COMPILE_TEST
364 depends on HAS_IOMEM && PCI
367 The PCI driver for Intel Low Power Subsystem PWM controller.
369 To compile this driver as a module, choose M here: the module
370 will be called pwm-lpss-pci.
372 config PWM_LPSS_PLATFORM
373 tristate "Intel LPSS PWM platform driver"
374 depends on (X86 && ACPI) || COMPILE_TEST
378 The platform driver for Intel Low Power Subsystem PWM controller.
380 To compile this driver as a module, choose M here: the module
381 will be called pwm-lpss-platform.
384 tristate "Amlogic Meson PWM driver"
385 depends on ARCH_MESON || COMPILE_TEST
386 depends on COMMON_CLK && HAS_IOMEM
388 The platform driver for Amlogic Meson PWM controller.
390 To compile this driver as a module, choose M here: the module
391 will be called pwm-meson.
394 tristate "MediaTek display PWM driver"
395 depends on ARCH_MEDIATEK || COMPILE_TEST
398 Generic PWM framework driver for MediaTek disp-pwm device.
399 The PWM is used to control the backlight brightness for display.
401 To compile this driver as a module, choose M here: the module
402 will be called pwm-mtk-disp.
405 tristate "MediaTek PWM support"
406 depends on ARCH_MEDIATEK || RALINK || COMPILE_TEST
409 Generic PWM framework driver for Mediatek ARM SoC.
411 To compile this driver as a module, choose M here: the module
412 will be called pwm-mediatek.
414 config PWM_MICROCHIP_CORE
415 tristate "Microchip corePWM PWM support"
416 depends on ARCH_MICROCHIP_POLARFIRE || COMPILE_TEST
417 depends on HAS_IOMEM && OF
419 PWM driver for Microchip FPGA soft IP core.
421 To compile this driver as a module, choose M here: the module
422 will be called pwm-microchip-core.
425 tristate "Freescale MXS PWM support"
426 depends on ARCH_MXS || COMPILE_TEST
427 depends on HAS_IOMEM && OF
430 Generic PWM framework driver for Freescale MXS.
432 To compile this driver as a module, choose M here: the module
433 will be called pwm-mxs.
436 tristate "Netronix embedded controller PWM support"
439 Say yes here if you want to support the PWM output of the embedded
440 controller found in certain e-book readers designed by the original
441 design manufacturer Netronix.
443 config PWM_OMAP_DMTIMER
444 tristate "OMAP Dual-Mode Timer PWM support"
446 depends on OMAP_DM_TIMER || COMPILE_TEST
448 Generic PWM framework driver for OMAP Dual-Mode Timer PWM output
450 To compile this driver as a module, choose M here: the module
451 will be called pwm-omap-dmtimer
454 tristate "NXP PCA9685 PWM driver"
458 Generic PWM framework driver for NXP PCA9685 LED controller.
460 To compile this driver as a module, choose M here: the module
461 will be called pwm-pca9685.
464 tristate "PXA PWM support"
465 depends on ARCH_PXA || ARCH_MMP || COMPILE_TEST
468 Generic PWM framework driver for PXA.
470 To compile this driver as a module, choose M here: the module
471 will be called pwm-pxa.
473 config PWM_RASPBERRYPI_POE
474 tristate "Raspberry Pi Firwmware PoE Hat PWM support"
475 # Make sure not 'y' when RASPBERRYPI_FIRMWARE is 'm'. This can only
476 # happen when COMPILE_TEST=y, hence the added !RASPBERRYPI_FIRMWARE.
477 depends on RASPBERRYPI_FIRMWARE || (COMPILE_TEST && !RASPBERRYPI_FIRMWARE)
479 Enable Raspberry Pi firmware controller PWM bus used to control the
483 tristate "Renesas R-Car PWM support"
484 depends on ARCH_RENESAS || COMPILE_TEST
487 This driver exposes the PWM Timer controller found in Renesas
488 R-Car chips through the PWM API.
490 To compile this driver as a module, choose M here: the module
491 will be called pwm-rcar.
493 config PWM_RENESAS_TPU
494 tristate "Renesas TPU PWM support"
495 depends on ARCH_RENESAS || COMPILE_TEST
498 This driver exposes the Timer Pulse Unit (TPU) PWM controller found
499 in Renesas chips through the PWM API.
501 To compile this driver as a module, choose M here: the module
502 will be called pwm-renesas-tpu.
505 tristate "Rockchip PWM support"
506 depends on ARCH_ROCKCHIP || COMPILE_TEST
509 Generic PWM framework driver for the PWM controller found on
513 tristate "Renesas RZ/G2L MTU3a PWM Timer support"
517 This driver exposes the MTU3a PWM Timer controller found in Renesas
518 RZ/G2L like chips through the PWM API.
520 To compile this driver as a module, choose M here: the module
521 will be called pwm-rz-mtu3.
524 tristate "Samsung PWM support"
525 depends on PLAT_SAMSUNG || ARCH_S5PV210 || ARCH_EXYNOS || COMPILE_TEST
528 Generic PWM framework driver for Samsung S3C24xx, S3C64xx, S5Pv210
530 Choose Y here only if you build for such Samsung SoC.
532 To compile this driver as a module, choose M here: the module
533 will be called pwm-samsung.
536 tristate "SiFive PWM support"
538 depends on COMMON_CLK && HAS_IOMEM
539 depends on RISCV || COMPILE_TEST
541 Generic PWM framework driver for SiFive SoCs.
543 To compile this driver as a module, choose M here: the module
544 will be called pwm-sifive.
547 tristate "Kontron sl28cpld PWM support"
548 depends on MFD_SL28CPLD || COMPILE_TEST
550 Generic PWM framework driver for board management controller
551 found on the Kontron sl28 CPLD.
553 To compile this driver as a module, choose M here: the module
554 will be called pwm-sl28cpld.
557 tristate "STMicroelectronics SPEAr PWM support"
558 depends on PLAT_SPEAR || COMPILE_TEST
559 depends on HAS_IOMEM && OF
561 Generic PWM framework driver for the PWM controller on ST
564 To compile this driver as a module, choose M here: the module
565 will be called pwm-spear.
568 tristate "Spreadtrum PWM support"
569 depends on ARCH_SPRD || COMPILE_TEST
572 Generic PWM framework driver for the PWM controller on
575 To compile this driver as a module, choose M here: the module
576 will be called pwm-sprd.
579 tristate "STiH4xx PWM support"
580 depends on ARCH_STI || COMPILE_TEST
581 depends on HAS_IOMEM && OF
583 Generic PWM framework driver for STiH4xx SoCs.
585 To compile this driver as a module, choose M here: the module
586 will be called pwm-sti.
589 tristate "STMicroelectronics STM32 PWM"
590 depends on MFD_STM32_TIMERS || COMPILE_TEST
592 Generic PWM framework driver for STM32 SoCs.
594 To compile this driver as a module, choose M here: the module
595 will be called pwm-stm32.
598 tristate "STMicroelectronics STM32 PWM LP"
599 depends on MFD_STM32_LPTIMER || COMPILE_TEST
601 Generic PWM framework driver for STMicroelectronics STM32 SoCs
602 with Low-Power Timer (LPTIM).
604 To compile this driver as a module, choose M here: the module
605 will be called pwm-stm32-lp.
608 bool "STMPE expander PWM export"
611 This enables support for the PWMs found in the STMPE I/O
615 tristate "Allwinner PWM support"
616 depends on ARCH_SUNXI || COMPILE_TEST
617 depends on HAS_IOMEM && COMMON_CLK
619 Generic PWM framework driver for Allwinner SoCs.
621 To compile this driver as a module, choose M here: the module
622 will be called pwm-sun4i.
625 tristate "Sunplus PWM support"
626 depends on ARCH_SUNPLUS || COMPILE_TEST
627 depends on HAS_IOMEM && OF
629 Generic PWM framework driver for the PWM controller on
632 To compile this driver as a module, choose M here: the module
633 will be called pwm-sunplus.
636 tristate "NVIDIA Tegra PWM support"
637 depends on ARCH_TEGRA || COMPILE_TEST
640 Generic PWM framework driver for the PWFM controller found on NVIDIA
643 To compile this driver as a module, choose M here: the module
644 will be called pwm-tegra.
647 tristate "ECAP PWM support"
648 depends on ARCH_OMAP2PLUS || ARCH_DAVINCI_DA8XX || ARCH_KEYSTONE || ARCH_K3 || COMPILE_TEST
651 PWM driver support for the ECAP APWM controller found on TI SOCs
653 To compile this driver as a module, choose M here: the module
654 will be called pwm-tiecap.
657 tristate "EHRPWM PWM support"
658 depends on ARCH_OMAP2PLUS || ARCH_DAVINCI_DA8XX || ARCH_K3 || COMPILE_TEST
661 PWM driver support for the EHRPWM controller found on TI SOCs
663 To compile this driver as a module, choose M here: the module
664 will be called pwm-tiehrpwm.
667 tristate "TWL4030/6030 PWM support"
668 depends on TWL4030_CORE
670 Generic PWM framework driver for TWL4030/6030.
672 To compile this driver as a module, choose M here: the module
673 will be called pwm-twl.
676 tristate "TWL4030/6030 PWM support for LED drivers"
677 depends on TWL4030_CORE
679 Generic PWM framework driver for TWL4030/6030 LED terminals.
681 To compile this driver as a module, choose M here: the module
682 will be called pwm-twl-led.
685 tristate "Toshiba Visconti PWM support"
686 depends on ARCH_VISCONTI || COMPILE_TEST
688 PWM Subsystem driver support for Toshiba Visconti SoCs.
690 To compile this driver as a module, choose M here: the module
691 will be called pwm-visconti.
694 tristate "vt8500 PWM support"
695 depends on ARCH_VT8500 || COMPILE_TEST
698 Generic PWM framework driver for vt8500.
700 To compile this driver as a module, choose M here: the module
701 will be called pwm-vt8500.
704 tristate "Xilinx AXI Timer PWM support"
705 depends on OF_ADDRESS
706 depends on COMMON_CLK
709 PWM driver for Xilinx LogiCORE IP AXI timers. This timer is
710 typically a soft core which may be present in Xilinx FPGAs.
711 This device may also be present in Microblaze soft processors.
712 If you don't have this IP in your design, choose N.
714 To compile this driver as a module, choose M here: the module
715 will be called pwm-xilinx.