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 "Clock based PWM support"
145 depends on HAVE_CLK || COMPILE_TEST
147 Generic PWM framework driver for outputs that can be
150 To compile this driver as a module, choose M here: the module
151 will be called pwm-clk.
154 tristate "CLPS711X PWM support"
155 depends on ARCH_CLPS711X || COMPILE_TEST
158 Generic PWM framework driver for Cirrus Logic CLPS711X.
160 To compile this driver as a module, choose M here: the module
161 will be called pwm-clps711x.
164 bool "Intel Crystalcove (CRC) PWM support"
165 depends on X86 && INTEL_SOC_PMIC
167 Generic PWM framework driver for Crystalcove (CRC) PMIC based PWM
171 tristate "ChromeOS EC PWM driver"
174 PWM driver for exposing a PWM attached to the ChromeOS Embedded
178 tristate "DesignWare PWM Controller"
181 PWM driver for Synopsys DWC PWM Controller attached to a PCI bus.
183 To compile this driver as a module, choose M here: the module
184 will be called pwm-dwc.
187 tristate "Cirrus Logic EP93xx PWM support"
188 depends on ARCH_EP93XX || COMPILE_TEST
191 Generic PWM framework driver for Cirrus Logic EP93xx.
193 To compile this driver as a module, choose M here: the module
194 will be called pwm-ep93xx.
197 tristate "Freescale FlexTimer Module (FTM) PWM support"
202 Generic FTM PWM framework driver for Freescale VF610 and
203 Layerscape LS-1 SoCs.
205 To compile this driver as a module, choose M here: the module
206 will be called pwm-fsl-ftm.
209 tristate "HiSilicon BVT PWM support"
210 depends on ARCH_HISI || COMPILE_TEST
213 Generic PWM framework driver for HiSilicon BVT SoCs.
215 To compile this driver as a module, choose M here: the module
216 will be called pwm-hibvt.
219 tristate "Imagination Technologies PWM driver"
221 depends on MFD_SYSCON
222 depends on COMMON_CLK
223 depends on MIPS || COMPILE_TEST
225 Generic PWM framework driver for Imagination Technologies
226 PWM block which supports 4 channels.
228 To compile this driver as a module, choose M here: the module
229 will be called pwm-img
232 tristate "i.MX1 PWM support"
233 depends on ARCH_MXC || COMPILE_TEST
236 Generic PWM framework driver for i.MX1 and i.MX21
238 To compile this driver as a module, choose M here: the module
239 will be called pwm-imx1.
242 tristate "i.MX27 PWM support"
243 depends on ARCH_MXC || COMPILE_TEST
246 Generic PWM framework driver for i.MX27 and later i.MX SoCs.
248 To compile this driver as a module, choose M here: the module
249 will be called pwm-imx27.
252 tristate "i.MX TPM PWM support"
253 depends on ARCH_MXC || COMPILE_TEST
254 depends on HAVE_CLK && HAS_IOMEM
256 Generic PWM framework driver for i.MX7ULP TPM module, TPM's full
257 name is Low Power Timer/Pulse Width Modulation Module.
259 To compile this driver as a module, choose M here: the module
260 will be called pwm-imx-tpm.
263 tristate "Intel LGM PWM support"
265 depends on (OF && X86) || COMPILE_TEST
268 Generic PWM fan controller driver for LGM SoC.
270 To compile this driver as a module, choose M here: the module
271 will be called pwm-intel-lgm.
274 tristate "Azoteq IQS620A PWM support"
275 depends on MFD_IQS62X || COMPILE_TEST
277 Generic PWM framework driver for the Azoteq IQS620A multi-function
280 To compile this driver as a module, choose M here: the module will
281 be called pwm-iqs620a.
284 tristate "Ingenic JZ47xx PWM support"
285 depends on MIPS || COMPILE_TEST
286 depends on COMMON_CLK
289 Generic PWM framework driver for Ingenic JZ47xx based
292 To compile this driver as a module, choose M here: the module
293 will be called pwm-jz4740.
296 tristate "Intel Keem Bay PWM driver"
297 depends on ARCH_KEEMBAY || COMPILE_TEST
298 depends on COMMON_CLK && HAS_IOMEM
300 The platform driver for Intel Keem Bay PWM controller.
302 To compile this driver as a module, choose M here: the module
303 will be called pwm-keembay.
306 tristate "TI/National Semiconductor LP3943 PWM support"
307 depends on MFD_LP3943
309 Generic PWM framework driver for LP3943 which supports two PWM
312 To compile this driver as a module, choose M here: the module
313 will be called pwm-lp3943.
315 config PWM_LPC18XX_SCT
316 tristate "LPC18xx/43xx PWM/SCT support"
317 depends on ARCH_LPC18XX || COMPILE_TEST
320 Generic PWM framework driver for NXP LPC18xx PWM/SCT which
321 supports 16 channels.
322 A maximum of 15 channels can be requested simultaneously and
323 must have the same period.
325 To compile this driver as a module, choose M here: the module
326 will be called pwm-lpc18xx-sct.
329 tristate "LPC32XX PWM support"
330 depends on ARCH_LPC32XX || COMPILE_TEST
333 Generic PWM framework driver for LPC32XX. The LPC32XX SOC has two
336 To compile this driver as a module, choose M here: the module
337 will be called pwm-lpc32xx.
344 tristate "Intel LPSS PWM PCI driver"
345 depends on X86 || COMPILE_TEST
346 depends on HAS_IOMEM && PCI
349 The PCI driver for Intel Low Power Subsystem PWM controller.
351 To compile this driver as a module, choose M here: the module
352 will be called pwm-lpss-pci.
354 config PWM_LPSS_PLATFORM
355 tristate "Intel LPSS PWM platform driver"
356 depends on (X86 && ACPI) || COMPILE_TEST
360 The platform driver for Intel Low Power Subsystem PWM controller.
362 To compile this driver as a module, choose M here: the module
363 will be called pwm-lpss-platform.
366 tristate "Amlogic Meson PWM driver"
367 depends on ARCH_MESON || COMPILE_TEST
368 depends on COMMON_CLK && HAS_IOMEM
370 The platform driver for Amlogic Meson PWM controller.
372 To compile this driver as a module, choose M here: the module
373 will be called pwm-meson.
376 tristate "MediaTek display PWM driver"
377 depends on ARCH_MEDIATEK || COMPILE_TEST
380 Generic PWM framework driver for MediaTek disp-pwm device.
381 The PWM is used to control the backlight brightness for display.
383 To compile this driver as a module, choose M here: the module
384 will be called pwm-mtk-disp.
387 tristate "MediaTek PWM support"
388 depends on ARCH_MEDIATEK || RALINK || COMPILE_TEST
391 Generic PWM framework driver for Mediatek ARM SoC.
393 To compile this driver as a module, choose M here: the module
394 will be called pwm-mediatek.
397 tristate "Freescale MXS PWM support"
398 depends on ARCH_MXS || COMPILE_TEST
399 depends on HAS_IOMEM && OF
402 Generic PWM framework driver for Freescale MXS.
404 To compile this driver as a module, choose M here: the module
405 will be called pwm-mxs.
408 tristate "Netronix embedded controller PWM support"
411 Say yes here if you want to support the PWM output of the embedded
412 controller found in certain e-book readers designed by the original
413 design manufacturer Netronix.
415 config PWM_OMAP_DMTIMER
416 tristate "OMAP Dual-Mode Timer PWM support"
418 depends on OMAP_DM_TIMER || COMPILE_TEST
420 Generic PWM framework driver for OMAP Dual-Mode Timer PWM output
422 To compile this driver as a module, choose M here: the module
423 will be called pwm-omap-dmtimer
426 tristate "NXP PCA9685 PWM driver"
430 Generic PWM framework driver for NXP PCA9685 LED controller.
432 To compile this driver as a module, choose M here: the module
433 will be called pwm-pca9685.
436 tristate "PXA PWM support"
437 depends on ARCH_PXA || COMPILE_TEST
440 Generic PWM framework driver for PXA.
442 To compile this driver as a module, choose M here: the module
443 will be called pwm-pxa.
445 config PWM_RASPBERRYPI_POE
446 tristate "Raspberry Pi Firwmware PoE Hat PWM support"
447 # Make sure not 'y' when RASPBERRYPI_FIRMWARE is 'm'. This can only
448 # happen when COMPILE_TEST=y, hence the added !RASPBERRYPI_FIRMWARE.
449 depends on RASPBERRYPI_FIRMWARE || (COMPILE_TEST && !RASPBERRYPI_FIRMWARE)
451 Enable Raspberry Pi firmware controller PWM bus used to control the
455 tristate "Renesas R-Car PWM support"
456 depends on ARCH_RENESAS || COMPILE_TEST
459 This driver exposes the PWM Timer controller found in Renesas
460 R-Car chips through the PWM API.
462 To compile this driver as a module, choose M here: the module
463 will be called pwm-rcar.
465 config PWM_RENESAS_TPU
466 tristate "Renesas TPU PWM support"
467 depends on ARCH_RENESAS || COMPILE_TEST
470 This driver exposes the Timer Pulse Unit (TPU) PWM controller found
471 in Renesas chips through the PWM API.
473 To compile this driver as a module, choose M here: the module
474 will be called pwm-renesas-tpu.
477 tristate "Rockchip PWM support"
478 depends on ARCH_ROCKCHIP || COMPILE_TEST
481 Generic PWM framework driver for the PWM controller found on
485 tristate "Samsung PWM support"
486 depends on PLAT_SAMSUNG || ARCH_S5PV210 || ARCH_EXYNOS || COMPILE_TEST
489 Generic PWM framework driver for Samsung S3C24xx, S3C64xx, S5Pv210
491 Choose Y here only if you build for such Samsung SoC.
493 To compile this driver as a module, choose M here: the module
494 will be called pwm-samsung.
497 tristate "SiFive PWM support"
499 depends on COMMON_CLK && HAS_IOMEM
500 depends on RISCV || COMPILE_TEST
502 Generic PWM framework driver for SiFive SoCs.
504 To compile this driver as a module, choose M here: the module
505 will be called pwm-sifive.
508 tristate "Kontron sl28cpld PWM support"
509 depends on MFD_SL28CPLD || COMPILE_TEST
511 Generic PWM framework driver for board management controller
512 found on the Kontron sl28 CPLD.
514 To compile this driver as a module, choose M here: the module
515 will be called pwm-sl28cpld.
518 tristate "STMicroelectronics SPEAr PWM support"
519 depends on PLAT_SPEAR || COMPILE_TEST
520 depends on HAS_IOMEM && OF
522 Generic PWM framework driver for the PWM controller on ST
525 To compile this driver as a module, choose M here: the module
526 will be called pwm-spear.
529 tristate "Spreadtrum PWM support"
530 depends on ARCH_SPRD || COMPILE_TEST
533 Generic PWM framework driver for the PWM controller on
536 To compile this driver as a module, choose M here: the module
537 will be called pwm-sprd.
540 tristate "STiH4xx PWM support"
541 depends on ARCH_STI || COMPILE_TEST
542 depends on HAS_IOMEM && OF
544 Generic PWM framework driver for STiH4xx SoCs.
546 To compile this driver as a module, choose M here: the module
547 will be called pwm-sti.
550 tristate "STMicroelectronics STM32 PWM"
551 depends on MFD_STM32_TIMERS || COMPILE_TEST
553 Generic PWM framework driver for STM32 SoCs.
555 To compile this driver as a module, choose M here: the module
556 will be called pwm-stm32.
559 tristate "STMicroelectronics STM32 PWM LP"
560 depends on MFD_STM32_LPTIMER || COMPILE_TEST
562 Generic PWM framework driver for STMicroelectronics STM32 SoCs
563 with Low-Power Timer (LPTIM).
565 To compile this driver as a module, choose M here: the module
566 will be called pwm-stm32-lp.
569 bool "STMPE expander PWM export"
572 This enables support for the PWMs found in the STMPE I/O
576 tristate "Allwinner PWM support"
577 depends on ARCH_SUNXI || COMPILE_TEST
578 depends on HAS_IOMEM && COMMON_CLK
580 Generic PWM framework driver for Allwinner SoCs.
582 To compile this driver as a module, choose M here: the module
583 will be called pwm-sun4i.
586 tristate "Sunplus PWM support"
587 depends on ARCH_SUNPLUS || COMPILE_TEST
588 depends on HAS_IOMEM && OF
590 Generic PWM framework driver for the PWM controller on
593 To compile this driver as a module, choose M here: the module
594 will be called pwm-sunplus.
597 tristate "NVIDIA Tegra PWM support"
598 depends on ARCH_TEGRA || COMPILE_TEST
601 Generic PWM framework driver for the PWFM controller found on NVIDIA
604 To compile this driver as a module, choose M here: the module
605 will be called pwm-tegra.
608 tristate "ECAP PWM support"
609 depends on ARCH_OMAP2PLUS || ARCH_DAVINCI_DA8XX || ARCH_KEYSTONE || ARCH_K3 || COMPILE_TEST
612 PWM driver support for the ECAP APWM controller found on TI SOCs
614 To compile this driver as a module, choose M here: the module
615 will be called pwm-tiecap.
618 tristate "EHRPWM PWM support"
619 depends on ARCH_OMAP2PLUS || ARCH_DAVINCI_DA8XX || ARCH_K3 || COMPILE_TEST
622 PWM driver support for the EHRPWM controller found on TI SOCs
624 To compile this driver as a module, choose M here: the module
625 will be called pwm-tiehrpwm.
628 tristate "TWL4030/6030 PWM support"
629 depends on TWL4030_CORE
631 Generic PWM framework driver for TWL4030/6030.
633 To compile this driver as a module, choose M here: the module
634 will be called pwm-twl.
637 tristate "TWL4030/6030 PWM support for LED drivers"
638 depends on TWL4030_CORE
640 Generic PWM framework driver for TWL4030/6030 LED terminals.
642 To compile this driver as a module, choose M here: the module
643 will be called pwm-twl-led.
646 tristate "Toshiba Visconti PWM support"
647 depends on ARCH_VISCONTI || COMPILE_TEST
649 PWM Subsystem driver support for Toshiba Visconti SoCs.
651 To compile this driver as a module, choose M here: the module
652 will be called pwm-visconti.
655 tristate "vt8500 PWM support"
656 depends on ARCH_VT8500 || COMPILE_TEST
659 Generic PWM framework driver for vt8500.
661 To compile this driver as a module, choose M here: the module
662 will be called pwm-vt8500.
665 tristate "Xilinx AXI Timer PWM support"
666 depends on OF_ADDRESS
667 depends on COMMON_CLK
670 PWM driver for Xilinx LogiCORE IP AXI timers. This timer is
671 typically a soft core which may be present in Xilinx FPGAs.
672 This device may also be present in Microblaze soft processors.
673 If you don't have this IP in your design, choose N.
675 To compile this driver as a module, choose M here: the module
676 will be called pwm-xilinx.