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 "ADP5585 PWM support"
52 depends on MFD_ADP5585
54 This option enables support for the PWM function found in the Analog
58 tristate "Apple SoC PWM support"
59 depends on ARCH_APPLE || COMPILE_TEST
61 Generic PWM framework driver for PWM controller present on
64 Say Y here if you have an ARM Apple laptop, otherwise say N
66 To compile this driver as a module, choose M here: the module
67 will be called pwm-apple.
70 tristate "Atmel PWM support"
71 depends on ARCH_AT91 || COMPILE_TEST
72 depends on HAS_IOMEM && OF
74 Generic PWM framework driver for Atmel SoC.
76 To compile this driver as a module, choose M here: the module
77 will be called pwm-atmel.
79 config PWM_ATMEL_HLCDC_PWM
80 tristate "Atmel HLCDC PWM support"
81 depends on MFD_ATMEL_HLCDC
84 Generic PWM framework driver for the PWM output of the HLCDC
85 (Atmel High-end LCD Controller). This PWM output is mainly used
86 to control the LCD backlight.
88 To compile this driver as a module, choose M here: the module
89 will be called pwm-atmel-hlcdc.
92 tristate "Atmel TC Block PWM support"
96 Generic PWM framework driver for Atmel Timer Counter Block.
98 A Timer Counter Block provides 6 PWM devices grouped by 2.
99 Devices in a given group must have the same period.
101 To compile this driver as a module, choose M here: the module
102 will be called pwm-atmel-tcb.
104 config PWM_AXI_PWMGEN
105 tristate "Analog Devices AXI PWM generator"
106 depends on MICROBLAZE || NIOS2 || ARCH_ZYNQ || ARCH_ZYNQMP || ARCH_INTEL_SOCFPGA || COMPILE_TEST
109 This enables support for the Analog Devices AXI PWM generator.
111 This is a configurable PWM generator with variable pulse width and
114 To compile this driver as a module, choose M here: the module will be
115 called pwm-axi-pwmgen.
118 tristate "iProc PWM support"
119 depends on ARCH_BCM_IPROC || COMPILE_TEST
120 depends on COMMON_CLK && HAS_IOMEM
121 default ARCH_BCM_IPROC
123 Generic PWM framework driver for Broadcom iProc PWM block. This
124 block is used in Broadcom iProc SoC's.
126 To compile this driver as a module, choose M here: the module
127 will be called pwm-bcm-iproc.
130 tristate "Kona PWM support"
131 depends on ARCH_BCM_MOBILE || ARCH_BCM_CYGNUS || COMPILE_TEST
132 depends on HAVE_CLK && HAS_IOMEM
133 default ARCH_BCM_MOBILE || ARCH_BCM_CYGNUS
135 Generic PWM framework driver for Broadcom Kona PWM block.
137 To compile this driver as a module, choose M here: the module
138 will be called pwm-bcm-kona.
141 tristate "BCM2835 PWM support"
142 depends on ARCH_BCM2835 || ARCH_BRCMSTB || COMPILE_TEST
145 PWM framework driver for BCM2835 controller (Raspberry Pi)
147 To compile this driver as a module, choose M here: the module
148 will be called pwm-bcm2835.
151 tristate "Marvell Berlin PWM support"
152 depends on ARCH_BERLIN || COMPILE_TEST
155 PWM framework driver for Marvell Berlin SoCs.
157 To compile this driver as a module, choose M here: the module
158 will be called pwm-berlin.
161 tristate "Broadcom STB PWM support"
162 depends on ARCH_BRCMSTB || BMIPS_GENERIC || COMPILE_TEST
165 Generic PWM framework driver for the Broadcom Set-top-Box
168 To compile this driver as a module, choose M Here: the module
169 will be called pwm-brcmstb.c.
172 tristate "Clock based PWM support"
173 depends on HAVE_CLK || COMPILE_TEST
175 Generic PWM framework driver for outputs that can be
178 To compile this driver as a module, choose M here: the module
179 will be called pwm-clk.
182 tristate "CLPS711X PWM support"
183 depends on ARCH_CLPS711X || COMPILE_TEST
186 Generic PWM framework driver for Cirrus Logic CLPS711X.
188 To compile this driver as a module, choose M here: the module
189 will be called pwm-clps711x.
192 tristate "Intel Crystalcove (CRC) PWM support"
193 depends on INTEL_SOC_PMIC
195 Generic PWM framework driver for Crystalcove (CRC) PMIC based PWM
199 tristate "ChromeOS EC PWM driver"
202 PWM driver for exposing a PWM attached to the ChromeOS Embedded
209 PWM driver for Synopsys DWC PWM Controller.
211 To compile this driver as a module, build the dependecies as
212 modules, this will be called pwm-dwc-core.
215 tristate "DesignWare PWM Controller (PCI bus)"
216 depends on HAS_IOMEM && PCI
219 PWM driver for Synopsys DWC PWM Controller attached to a PCI bus.
221 To compile this driver as a module, choose M here: the module
222 will be called pwm-dwc.
225 tristate "Cirrus Logic EP93xx PWM support"
226 depends on ARCH_EP93XX || COMPILE_TEST
229 Generic PWM framework driver for Cirrus Logic EP93xx.
231 To compile this driver as a module, choose M here: the module
232 will be called pwm-ep93xx.
235 tristate "Freescale FlexTimer Module (FTM) PWM support"
240 Generic FTM PWM framework driver for Freescale VF610 and
241 Layerscape LS-1 SoCs.
243 To compile this driver as a module, choose M here: the module
244 will be called pwm-fsl-ftm.
247 tristate "GPIO PWM support"
249 depends on HIGH_RES_TIMERS
251 Generic PWM framework driver for software PWM toggling a GPIO pin
252 from kernel high-resolution timers.
254 To compile this driver as a module, choose M here: the module
255 will be called pwm-gpio.
258 tristate "HiSilicon BVT PWM support"
259 depends on ARCH_HISI || COMPILE_TEST
262 Generic PWM framework driver for HiSilicon BVT SoCs.
264 To compile this driver as a module, choose M here: the module
265 will be called pwm-hibvt.
268 tristate "Imagination Technologies PWM driver"
270 depends on MFD_SYSCON
271 depends on COMMON_CLK
272 depends on MIPS || COMPILE_TEST
274 Generic PWM framework driver for Imagination Technologies
275 PWM block which supports 4 channels.
277 To compile this driver as a module, choose M here: the module
278 will be called pwm-img
281 tristate "i.MX1 PWM support"
282 depends on ARCH_MXC || COMPILE_TEST
285 Generic PWM framework driver for i.MX1 and i.MX21
287 To compile this driver as a module, choose M here: the module
288 will be called pwm-imx1.
291 tristate "i.MX27 PWM support"
292 depends on ARCH_MXC || COMPILE_TEST
295 Generic PWM framework driver for i.MX27 and later i.MX SoCs.
297 To compile this driver as a module, choose M here: the module
298 will be called pwm-imx27.
301 tristate "i.MX TPM PWM support"
302 depends on ARCH_MXC || COMPILE_TEST
303 depends on HAVE_CLK && HAS_IOMEM
305 Generic PWM framework driver for i.MX7ULP TPM module, TPM's full
306 name is Low Power Timer/Pulse Width Modulation Module.
308 To compile this driver as a module, choose M here: the module
309 will be called pwm-imx-tpm.
312 tristate "Intel LGM PWM support"
314 depends on (OF && X86) || COMPILE_TEST
317 Generic PWM fan controller driver for LGM SoC.
319 To compile this driver as a module, choose M here: the module
320 will be called pwm-intel-lgm.
323 tristate "Azoteq IQS620A PWM support"
324 depends on MFD_IQS62X || COMPILE_TEST
326 Generic PWM framework driver for the Azoteq IQS620A multi-function
329 To compile this driver as a module, choose M here: the module will
330 be called pwm-iqs620a.
333 tristate "Ingenic JZ47xx PWM support"
334 depends on MACH_INGENIC || COMPILE_TEST
335 depends on COMMON_CLK && OF
338 Generic PWM framework driver for Ingenic JZ47xx based
341 To compile this driver as a module, choose M here: the module
342 will be called pwm-jz4740.
345 tristate "Intel Keem Bay PWM driver"
346 depends on ARCH_KEEMBAY || COMPILE_TEST
347 depends on COMMON_CLK && HAS_IOMEM
349 The platform driver for Intel Keem Bay PWM controller.
351 To compile this driver as a module, choose M here: the module
352 will be called pwm-keembay.
355 tristate "TI/National Semiconductor LP3943 PWM support"
356 depends on MFD_LP3943
358 Generic PWM framework driver for LP3943 which supports two PWM
361 To compile this driver as a module, choose M here: the module
362 will be called pwm-lp3943.
364 config PWM_LPC18XX_SCT
365 tristate "LPC18xx/43xx PWM/SCT support"
366 depends on ARCH_LPC18XX || COMPILE_TEST
369 Generic PWM framework driver for NXP LPC18xx PWM/SCT which
370 supports 16 channels.
371 A maximum of 15 channels can be requested simultaneously and
372 must have the same period.
374 To compile this driver as a module, choose M here: the module
375 will be called pwm-lpc18xx-sct.
378 tristate "LPC32XX PWM support"
379 depends on ARCH_LPC32XX || COMPILE_TEST
382 Generic PWM framework driver for LPC32XX. The LPC32XX SOC has two
385 To compile this driver as a module, choose M here: the module
386 will be called pwm-lpc32xx.
393 tristate "Intel LPSS PWM PCI driver"
394 depends on X86 || COMPILE_TEST
395 depends on HAS_IOMEM && PCI
398 The PCI driver for Intel Low Power Subsystem PWM controller.
400 To compile this driver as a module, choose M here: the module
401 will be called pwm-lpss-pci.
403 config PWM_LPSS_PLATFORM
404 tristate "Intel LPSS PWM platform driver"
405 depends on (X86 && ACPI) || COMPILE_TEST
409 The platform driver for Intel Low Power Subsystem PWM controller.
411 To compile this driver as a module, choose M here: the module
412 will be called pwm-lpss-platform.
415 tristate "Amlogic Meson PWM driver"
416 depends on ARCH_MESON || COMPILE_TEST
417 depends on COMMON_CLK && HAS_IOMEM
419 The platform driver for Amlogic Meson PWM controller.
421 To compile this driver as a module, choose M here: the module
422 will be called pwm-meson.
425 tristate "MediaTek display PWM driver"
426 depends on ARCH_MEDIATEK || COMPILE_TEST
429 Generic PWM framework driver for MediaTek disp-pwm device.
430 The PWM is used to control the backlight brightness for display.
432 To compile this driver as a module, choose M here: the module
433 will be called pwm-mtk-disp.
436 tristate "MediaTek PWM support"
437 depends on ARCH_MEDIATEK || RALINK || COMPILE_TEST
440 Generic PWM framework driver for Mediatek ARM SoC.
442 To compile this driver as a module, choose M here: the module
443 will be called pwm-mediatek.
445 config PWM_MICROCHIP_CORE
446 tristate "Microchip corePWM PWM support"
447 depends on ARCH_MICROCHIP_POLARFIRE || COMPILE_TEST
448 depends on HAS_IOMEM && OF
450 PWM driver for Microchip FPGA soft IP core.
452 To compile this driver as a module, choose M here: the module
453 will be called pwm-microchip-core.
456 tristate "Freescale MXS PWM support"
457 depends on ARCH_MXS || COMPILE_TEST
458 depends on HAS_IOMEM && OF
461 Generic PWM framework driver for Freescale MXS.
463 To compile this driver as a module, choose M here: the module
464 will be called pwm-mxs.
467 tristate "Netronix embedded controller PWM support"
470 Say yes here if you want to support the PWM output of the embedded
471 controller found in certain e-book readers designed by the original
472 design manufacturer Netronix.
474 config PWM_OMAP_DMTIMER
475 tristate "OMAP Dual-Mode Timer PWM support"
477 depends on OMAP_DM_TIMER || COMPILE_TEST
479 Generic PWM framework driver for OMAP Dual-Mode Timer PWM output
481 To compile this driver as a module, choose M here: the module
482 will be called pwm-omap-dmtimer
485 tristate "NXP PCA9685 PWM driver"
489 Generic PWM framework driver for NXP PCA9685 LED controller.
491 To compile this driver as a module, choose M here: the module
492 will be called pwm-pca9685.
495 tristate "PXA PWM support"
496 depends on ARCH_PXA || ARCH_MMP || COMPILE_TEST
499 Generic PWM framework driver for PXA.
501 To compile this driver as a module, choose M here: the module
502 will be called pwm-pxa.
504 config PWM_RASPBERRYPI_POE
505 tristate "Raspberry Pi Firwmware PoE Hat PWM support"
506 # Make sure not 'y' when RASPBERRYPI_FIRMWARE is 'm'. This can only
507 # happen when COMPILE_TEST=y, hence the added !RASPBERRYPI_FIRMWARE.
508 depends on RASPBERRYPI_FIRMWARE || (COMPILE_TEST && !RASPBERRYPI_FIRMWARE)
510 Enable Raspberry Pi firmware controller PWM bus used to control the
514 tristate "Renesas R-Car PWM support"
515 depends on ARCH_RENESAS || COMPILE_TEST
518 This driver exposes the PWM Timer controller found in Renesas
519 R-Car chips through the PWM API.
521 To compile this driver as a module, choose M here: the module
522 will be called pwm-rcar.
524 config PWM_RENESAS_TPU
525 tristate "Renesas TPU PWM support"
526 depends on ARCH_RENESAS || COMPILE_TEST
529 This driver exposes the Timer Pulse Unit (TPU) PWM controller found
530 in Renesas chips through the PWM API.
532 To compile this driver as a module, choose M here: the module
533 will be called pwm-renesas-tpu.
536 tristate "Rockchip PWM support"
537 depends on ARCH_ROCKCHIP || COMPILE_TEST
540 Generic PWM framework driver for the PWM controller found on
544 tristate "Renesas RZ/G2L MTU3a PWM Timer support"
548 This driver exposes the MTU3a PWM Timer controller found in Renesas
549 RZ/G2L like chips through the PWM API.
551 To compile this driver as a module, choose M here: the module
552 will be called pwm-rz-mtu3.
555 tristate "Samsung PWM support"
556 depends on PLAT_SAMSUNG || ARCH_S5PV210 || ARCH_EXYNOS || COMPILE_TEST
559 Generic PWM framework driver for Samsung S3C24xx, S3C64xx, S5Pv210
561 Choose Y here only if you build for such Samsung SoC.
563 To compile this driver as a module, choose M here: the module
564 will be called pwm-samsung.
567 tristate "SiFive PWM support"
569 depends on COMMON_CLK && HAS_IOMEM
570 depends on RISCV || COMPILE_TEST
572 Generic PWM framework driver for SiFive SoCs.
574 To compile this driver as a module, choose M here: the module
575 will be called pwm-sifive.
578 tristate "Kontron sl28cpld PWM support"
579 depends on MFD_SL28CPLD || COMPILE_TEST
581 Generic PWM framework driver for board management controller
582 found on the Kontron sl28 CPLD.
584 To compile this driver as a module, choose M here: the module
585 will be called pwm-sl28cpld.
588 tristate "STMicroelectronics SPEAr PWM support"
589 depends on PLAT_SPEAR || COMPILE_TEST
590 depends on HAS_IOMEM && OF
592 Generic PWM framework driver for the PWM controller on ST
595 To compile this driver as a module, choose M here: the module
596 will be called pwm-spear.
599 tristate "Spreadtrum PWM support"
600 depends on ARCH_SPRD || COMPILE_TEST
603 Generic PWM framework driver for the PWM controller on
606 To compile this driver as a module, choose M here: the module
607 will be called pwm-sprd.
610 tristate "STiH4xx PWM support"
611 depends on ARCH_STI || COMPILE_TEST
612 depends on HAS_IOMEM && OF
614 Generic PWM framework driver for STiH4xx SoCs.
616 To compile this driver as a module, choose M here: the module
617 will be called pwm-sti.
620 tristate "STMicroelectronics STM32 PWM"
621 depends on MFD_STM32_TIMERS || COMPILE_TEST
623 Generic PWM framework driver for STM32 SoCs.
625 To compile this driver as a module, choose M here: the module
626 will be called pwm-stm32.
629 tristate "STMicroelectronics STM32 PWM LP"
630 depends on MFD_STM32_LPTIMER || COMPILE_TEST
632 Generic PWM framework driver for STMicroelectronics STM32 SoCs
633 with Low-Power Timer (LPTIM).
635 To compile this driver as a module, choose M here: the module
636 will be called pwm-stm32-lp.
639 bool "STMPE expander PWM export"
642 This enables support for the PWMs found in the STMPE I/O
646 tristate "Allwinner PWM support"
647 depends on ARCH_SUNXI || COMPILE_TEST
648 depends on HAS_IOMEM && COMMON_CLK
650 Generic PWM framework driver for Allwinner SoCs.
652 To compile this driver as a module, choose M here: the module
653 will be called pwm-sun4i.
656 tristate "Sunplus PWM support"
657 depends on ARCH_SUNPLUS || COMPILE_TEST
658 depends on HAS_IOMEM && OF
660 Generic PWM framework driver for the PWM controller on
663 To compile this driver as a module, choose M here: the module
664 will be called pwm-sunplus.
667 tristate "NVIDIA Tegra PWM support"
668 depends on ARCH_TEGRA || COMPILE_TEST
671 Generic PWM framework driver for the PWFM controller found on NVIDIA
674 To compile this driver as a module, choose M here: the module
675 will be called pwm-tegra.
678 tristate "ECAP PWM support"
679 depends on ARCH_OMAP2PLUS || ARCH_DAVINCI_DA8XX || ARCH_KEYSTONE || ARCH_K3 || COMPILE_TEST
682 PWM driver support for the ECAP APWM controller found on TI SOCs
684 To compile this driver as a module, choose M here: the module
685 will be called pwm-tiecap.
688 tristate "EHRPWM PWM support"
689 depends on ARCH_OMAP2PLUS || ARCH_DAVINCI_DA8XX || ARCH_K3 || COMPILE_TEST
692 PWM driver support for the EHRPWM controller found on TI SOCs
694 To compile this driver as a module, choose M here: the module
695 will be called pwm-tiehrpwm.
698 tristate "TWL4030/6030 PWM support"
699 depends on TWL4030_CORE
701 Generic PWM framework driver for TWL4030/6030.
703 To compile this driver as a module, choose M here: the module
704 will be called pwm-twl.
707 tristate "TWL4030/6030 PWM support for LED drivers"
708 depends on TWL4030_CORE
710 Generic PWM framework driver for TWL4030/6030 LED terminals.
712 To compile this driver as a module, choose M here: the module
713 will be called pwm-twl-led.
716 tristate "Toshiba Visconti PWM support"
717 depends on ARCH_VISCONTI || COMPILE_TEST
719 PWM Subsystem driver support for Toshiba Visconti SoCs.
721 To compile this driver as a module, choose M here: the module
722 will be called pwm-visconti.
725 tristate "vt8500 PWM support"
726 depends on ARCH_VT8500 || COMPILE_TEST
729 Generic PWM framework driver for vt8500.
731 To compile this driver as a module, choose M here: the module
732 will be called pwm-vt8500.
735 tristate "Xilinx AXI Timer PWM support"
736 depends on OF_ADDRESS
737 depends on COMMON_CLK
740 PWM driver for Xilinx LogiCORE IP AXI timers. This timer is
741 typically a soft core which may be present in Xilinx FPGAs.
742 This device may also be present in Microblaze soft processors.
743 If you don't have this IP in your design, choose N.
745 To compile this driver as a module, choose M here: the module
746 will be called pwm-xilinx.