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 "CLPS711X PWM support"
145 depends on ARCH_CLPS711X || COMPILE_TEST
148 Generic PWM framework driver for Cirrus Logic CLPS711X.
150 To compile this driver as a module, choose M here: the module
151 will be called pwm-clps711x.
154 bool "Intel Crystalcove (CRC) PWM support"
155 depends on X86 && INTEL_SOC_PMIC
157 Generic PWM framework driver for Crystalcove (CRC) PMIC based PWM
161 tristate "ChromeOS EC PWM driver"
164 PWM driver for exposing a PWM attached to the ChromeOS Embedded
168 tristate "DesignWare PWM Controller"
171 PWM driver for Synopsys DWC PWM Controller attached to a PCI bus.
173 To compile this driver as a module, choose M here: the module
174 will be called pwm-dwc.
177 tristate "Cirrus Logic EP93xx PWM support"
178 depends on ARCH_EP93XX || COMPILE_TEST
181 Generic PWM framework driver for Cirrus Logic EP93xx.
183 To compile this driver as a module, choose M here: the module
184 will be called pwm-ep93xx.
187 tristate "Freescale FlexTimer Module (FTM) PWM support"
192 Generic FTM PWM framework driver for Freescale VF610 and
193 Layerscape LS-1 SoCs.
195 To compile this driver as a module, choose M here: the module
196 will be called pwm-fsl-ftm.
199 tristate "HiSilicon BVT PWM support"
200 depends on ARCH_HISI || COMPILE_TEST
203 Generic PWM framework driver for HiSilicon BVT SoCs.
205 To compile this driver as a module, choose M here: the module
206 will be called pwm-hibvt.
209 tristate "Imagination Technologies PWM driver"
211 depends on MFD_SYSCON
212 depends on COMMON_CLK
213 depends on MIPS || COMPILE_TEST
215 Generic PWM framework driver for Imagination Technologies
216 PWM block which supports 4 channels.
218 To compile this driver as a module, choose M here: the module
219 will be called pwm-img
222 tristate "i.MX1 PWM support"
223 depends on ARCH_MXC || COMPILE_TEST
226 Generic PWM framework driver for i.MX1 and i.MX21
228 To compile this driver as a module, choose M here: the module
229 will be called pwm-imx1.
232 tristate "i.MX27 PWM support"
233 depends on ARCH_MXC || COMPILE_TEST
236 Generic PWM framework driver for i.MX27 and later i.MX SoCs.
238 To compile this driver as a module, choose M here: the module
239 will be called pwm-imx27.
242 tristate "i.MX TPM PWM support"
243 depends on ARCH_MXC || COMPILE_TEST
244 depends on HAVE_CLK && HAS_IOMEM
246 Generic PWM framework driver for i.MX7ULP TPM module, TPM's full
247 name is Low Power Timer/Pulse Width Modulation Module.
249 To compile this driver as a module, choose M here: the module
250 will be called pwm-imx-tpm.
253 tristate "Intel LGM PWM support"
255 depends on (OF && X86) || COMPILE_TEST
258 Generic PWM fan controller driver for LGM SoC.
260 To compile this driver as a module, choose M here: the module
261 will be called pwm-intel-lgm.
264 tristate "Azoteq IQS620A PWM support"
265 depends on MFD_IQS62X || COMPILE_TEST
267 Generic PWM framework driver for the Azoteq IQS620A multi-function
270 To compile this driver as a module, choose M here: the module will
271 be called pwm-iqs620a.
274 tristate "Ingenic JZ47xx PWM support"
276 depends on COMMON_CLK
279 Generic PWM framework driver for Ingenic JZ47xx based
282 To compile this driver as a module, choose M here: the module
283 will be called pwm-jz4740.
286 tristate "Intel Keem Bay PWM driver"
287 depends on ARCH_KEEMBAY || (ARM64 && COMPILE_TEST)
289 The platform driver for Intel Keem Bay PWM controller.
291 To compile this driver as a module, choose M here: the module
292 will be called pwm-keembay.
295 tristate "LiteX PWM support"
298 depends on LITEX_SOC_CONTROLLER
300 Generic PWM framework driver for LiteX
303 tristate "TI/National Semiconductor LP3943 PWM support"
304 depends on MFD_LP3943
306 Generic PWM framework driver for LP3943 which supports two PWM
309 To compile this driver as a module, choose M here: the module
310 will be called pwm-lp3943.
312 config PWM_LPC18XX_SCT
313 tristate "LPC18xx/43xx PWM/SCT support"
314 depends on ARCH_LPC18XX || COMPILE_TEST
317 Generic PWM framework driver for NXP LPC18xx PWM/SCT which
318 supports 16 channels.
319 A maximum of 15 channels can be requested simultaneously and
320 must have the same period.
322 To compile this driver as a module, choose M here: the module
323 will be called pwm-lpc18xx-sct.
326 tristate "LPC32XX PWM support"
327 depends on ARCH_LPC32XX || COMPILE_TEST
330 Generic PWM framework driver for LPC32XX. The LPC32XX SOC has two
333 To compile this driver as a module, choose M here: the module
334 will be called pwm-lpc32xx.
341 tristate "Intel LPSS PWM PCI driver"
342 depends on X86 || COMPILE_TEST
343 depends on HAS_IOMEM && PCI
346 The PCI driver for Intel Low Power Subsystem PWM controller.
348 To compile this driver as a module, choose M here: the module
349 will be called pwm-lpss-pci.
351 config PWM_LPSS_PLATFORM
352 tristate "Intel LPSS PWM platform driver"
353 depends on (X86 && ACPI) || COMPILE_TEST
357 The platform driver for Intel Low Power Subsystem PWM controller.
359 To compile this driver as a module, choose M here: the module
360 will be called pwm-lpss-platform.
363 tristate "Amlogic Meson PWM driver"
364 depends on ARCH_MESON || COMPILE_TEST
365 depends on COMMON_CLK && HAS_IOMEM
367 The platform driver for Amlogic Meson PWM controller.
369 To compile this driver as a module, choose M here: the module
370 will be called pwm-meson.
373 tristate "MediaTek display PWM driver"
374 depends on ARCH_MEDIATEK || COMPILE_TEST
377 Generic PWM framework driver for MediaTek disp-pwm device.
378 The PWM is used to control the backlight brightness for display.
380 To compile this driver as a module, choose M here: the module
381 will be called pwm-mtk-disp.
384 tristate "MediaTek PWM support"
385 depends on ARCH_MEDIATEK || RALINK || COMPILE_TEST
388 Generic PWM framework driver for Mediatek ARM SoC.
390 To compile this driver as a module, choose M here: the module
391 will be called pwm-mediatek.
394 tristate "Freescale MXS PWM support"
395 depends on ARCH_MXS || COMPILE_TEST
396 depends on HAS_IOMEM && OF
399 Generic PWM framework driver for Freescale MXS.
401 To compile this driver as a module, choose M here: the module
402 will be called pwm-mxs.
404 config PWM_OMAP_DMTIMER
405 tristate "OMAP Dual-Mode Timer PWM support"
407 depends on OMAP_DM_TIMER || COMPILE_TEST
409 Generic PWM framework driver for OMAP Dual-Mode Timer PWM output
411 To compile this driver as a module, choose M here: the module
412 will be called pwm-omap-dmtimer
415 tristate "NXP PCA9685 PWM driver"
419 Generic PWM framework driver for NXP PCA9685 LED controller.
421 To compile this driver as a module, choose M here: the module
422 will be called pwm-pca9685.
425 tristate "PXA PWM support"
426 depends on ARCH_PXA || COMPILE_TEST
429 Generic PWM framework driver for PXA.
431 To compile this driver as a module, choose M here: the module
432 will be called pwm-pxa.
435 tristate "Renesas R-Car PWM support"
436 depends on ARCH_RENESAS || COMPILE_TEST
439 This driver exposes the PWM Timer controller found in Renesas
440 R-Car chips through the PWM API.
442 To compile this driver as a module, choose M here: the module
443 will be called pwm-rcar.
445 config PWM_RENESAS_TPU
446 tristate "Renesas TPU PWM support"
447 depends on ARCH_RENESAS || COMPILE_TEST
450 This driver exposes the Timer Pulse Unit (TPU) PWM controller found
451 in Renesas chips through the PWM API.
453 To compile this driver as a module, choose M here: the module
454 will be called pwm-renesas-tpu.
457 tristate "Rockchip PWM support"
458 depends on ARCH_ROCKCHIP || COMPILE_TEST
461 Generic PWM framework driver for the PWM controller found on
465 tristate "Samsung PWM support"
466 depends on PLAT_SAMSUNG || ARCH_S5PV210 || ARCH_EXYNOS || COMPILE_TEST
469 Generic PWM framework driver for Samsung.
471 To compile this driver as a module, choose M here: the module
472 will be called pwm-samsung.
475 tristate "SiFive PWM support"
477 depends on COMMON_CLK && HAS_IOMEM
478 depends on RISCV || COMPILE_TEST
480 Generic PWM framework driver for SiFive SoCs.
482 To compile this driver as a module, choose M here: the module
483 will be called pwm-sifive.
486 tristate "Kontron sl28cpld PWM support"
487 depends on MFD_SL28CPLD || COMPILE_TEST
489 Generic PWM framework driver for board management controller
490 found on the Kontron sl28 CPLD.
492 To compile this driver as a module, choose M here: the module
493 will be called pwm-sl28cpld.
496 tristate "STMicroelectronics SPEAr PWM support"
497 depends on PLAT_SPEAR || COMPILE_TEST
498 depends on HAS_IOMEM && OF
500 Generic PWM framework driver for the PWM controller on ST
503 To compile this driver as a module, choose M here: the module
504 will be called pwm-spear.
507 tristate "Spreadtrum PWM support"
508 depends on ARCH_SPRD || COMPILE_TEST
511 Generic PWM framework driver for the PWM controller on
514 To compile this driver as a module, choose M here: the module
515 will be called pwm-sprd.
518 tristate "STiH4xx PWM support"
519 depends on ARCH_STI || COMPILE_TEST
520 depends on HAS_IOMEM && OF
522 Generic PWM framework driver for STiH4xx SoCs.
524 To compile this driver as a module, choose M here: the module
525 will be called pwm-sti.
528 tristate "STMicroelectronics STM32 PWM"
529 depends on MFD_STM32_TIMERS || COMPILE_TEST
531 Generic PWM framework driver for STM32 SoCs.
533 To compile this driver as a module, choose M here: the module
534 will be called pwm-stm32.
537 tristate "STMicroelectronics STM32 PWM LP"
538 depends on MFD_STM32_LPTIMER || COMPILE_TEST
540 Generic PWM framework driver for STMicroelectronics STM32 SoCs
541 with Low-Power Timer (LPTIM).
543 To compile this driver as a module, choose M here: the module
544 will be called pwm-stm32-lp.
547 bool "STMPE expander PWM export"
550 This enables support for the PWMs found in the STMPE I/O
554 tristate "Allwinner PWM support"
555 depends on ARCH_SUNXI || COMPILE_TEST
556 depends on HAS_IOMEM && COMMON_CLK
558 Generic PWM framework driver for Allwinner SoCs.
560 To compile this driver as a module, choose M here: the module
561 will be called pwm-sun4i.
564 tristate "NVIDIA Tegra PWM support"
565 depends on ARCH_TEGRA || COMPILE_TEST
568 Generic PWM framework driver for the PWFM controller found on NVIDIA
571 To compile this driver as a module, choose M here: the module
572 will be called pwm-tegra.
575 tristate "ECAP PWM support"
576 depends on ARCH_OMAP2PLUS || ARCH_DAVINCI_DA8XX || ARCH_KEYSTONE || ARCH_K3 || COMPILE_TEST
579 PWM driver support for the ECAP APWM controller found on TI SOCs
581 To compile this driver as a module, choose M here: the module
582 will be called pwm-tiecap.
585 tristate "EHRPWM PWM support"
586 depends on ARCH_OMAP2PLUS || ARCH_DAVINCI_DA8XX || ARCH_K3 || COMPILE_TEST
589 PWM driver support for the EHRPWM controller found on TI SOCs
591 To compile this driver as a module, choose M here: the module
592 will be called pwm-tiehrpwm.
595 tristate "TWL4030/6030 PWM support"
596 depends on TWL4030_CORE
598 Generic PWM framework driver for TWL4030/6030.
600 To compile this driver as a module, choose M here: the module
601 will be called pwm-twl.
604 tristate "TWL4030/6030 PWM support for LED drivers"
605 depends on TWL4030_CORE
607 Generic PWM framework driver for TWL4030/6030 LED terminals.
609 To compile this driver as a module, choose M here: the module
610 will be called pwm-twl-led.
613 tristate "vt8500 PWM support"
614 depends on ARCH_VT8500 || COMPILE_TEST
617 Generic PWM framework driver for vt8500.
619 To compile this driver as a module, choose M here: the module
620 will be called pwm-vt8500.
623 tristate "ZTE ZX PWM support"
624 depends on ARCH_ZX || COMPILE_TEST
627 Generic PWM framework driver for ZTE ZX family SoCs.
629 To compile this driver as a module, choose M here: the module
630 will be called pwm-zx.