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"
57 depends on ARCH_AT91 || COMPILE_TEST
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"
78 depends on ATMEL_TCLIB && OF
80 Generic PWM framework driver for Atmel Timer Counter Block.
82 A Timer Counter Block provides 6 PWM devices grouped by 2.
83 Devices in a given group must have the same period.
85 To compile this driver as a module, choose M here: the module
86 will be called pwm-atmel-tcb.
89 tristate "iProc PWM support"
90 depends on ARCH_BCM_IPROC || COMPILE_TEST
92 default ARCH_BCM_IPROC
94 Generic PWM framework driver for Broadcom iProc PWM block. This
95 block is used in Broadcom iProc SoC's.
97 To compile this driver as a module, choose M here: the module
98 will be called pwm-bcm-iproc.
101 tristate "Kona PWM support"
102 depends on ARCH_BCM_MOBILE || ARCH_BCM_CYGNUS || COMPILE_TEST
103 depends on HAVE_CLK && HAS_IOMEM
104 default ARCH_BCM_MOBILE || ARCH_BCM_CYGNUS
106 Generic PWM framework driver for Broadcom Kona PWM block.
108 To compile this driver as a module, choose M here: the module
109 will be called pwm-bcm-kona.
112 tristate "BCM2835 PWM support"
113 depends on ARCH_BCM2835 || ARCH_BRCMSTB || COMPILE_TEST
115 PWM framework driver for BCM2835 controller (Raspberry Pi)
117 To compile this driver as a module, choose M here: the module
118 will be called pwm-bcm2835.
121 tristate "Marvell Berlin PWM support"
122 depends on ARCH_BERLIN || COMPILE_TEST
124 PWM framework driver for Marvell Berlin SoCs.
126 To compile this driver as a module, choose M here: the module
127 will be called pwm-berlin.
130 tristate "Broadcom STB PWM support"
131 depends on ARCH_BRCMSTB || BMIPS_GENERIC || COMPILE_TEST
133 Generic PWM framework driver for the Broadcom Set-top-Box
136 To compile this driver as a module, choose M Here: the module
137 will be called pwm-brcmstb.c.
140 tristate "CLPS711X PWM support"
141 depends on ARCH_CLPS711X || COMPILE_TEST
144 Generic PWM framework driver for Cirrus Logic CLPS711X.
146 To compile this driver as a module, choose M here: the module
147 will be called pwm-clps711x.
150 bool "Intel Crystalcove (CRC) PWM support"
151 depends on X86 && INTEL_SOC_PMIC
153 Generic PWM framework driver for Crystalcove (CRC) PMIC based PWM
157 tristate "ChromeOS EC PWM driver"
160 PWM driver for exposing a PWM attached to the ChromeOS Embedded
164 tristate "Cirrus Logic EP93xx PWM support"
165 depends on ARCH_EP93XX || COMPILE_TEST
167 Generic PWM framework driver for Cirrus Logic EP93xx.
169 To compile this driver as a module, choose M here: the module
170 will be called pwm-ep93xx.
173 tristate "Freescale FlexTimer Module (FTM) PWM support"
178 Generic FTM PWM framework driver for Freescale VF610 and
179 Layerscape LS-1 SoCs.
181 To compile this driver as a module, choose M here: the module
182 will be called pwm-fsl-ftm.
185 tristate "HiSilicon BVT PWM support"
186 depends on ARCH_HISI || COMPILE_TEST
188 Generic PWM framework driver for HiSilicon BVT SoCs.
190 To compile this driver as a module, choose M here: the module
191 will be called pwm-hibvt.
194 tristate "Imagination Technologies PWM driver"
196 depends on MFD_SYSCON
197 depends on COMMON_CLK
198 depends on MIPS || COMPILE_TEST
200 Generic PWM framework driver for Imagination Technologies
201 PWM block which supports 4 channels.
203 To compile this driver as a module, choose M here: the module
204 will be called pwm-img
207 tristate "i.MX1 PWM support"
208 depends on ARCH_MXC || COMPILE_TEST
210 Generic PWM framework driver for i.MX1 and i.MX21
212 To compile this driver as a module, choose M here: the module
213 will be called pwm-imx1.
216 tristate "i.MX27 PWM support"
217 depends on ARCH_MXC || COMPILE_TEST
219 Generic PWM framework driver for i.MX27 and later i.MX SoCs.
221 To compile this driver as a module, choose M here: the module
222 will be called pwm-imx27.
225 tristate "i.MX TPM PWM support"
226 depends on ARCH_MXC || COMPILE_TEST
227 depends on HAVE_CLK && HAS_IOMEM
229 Generic PWM framework driver for i.MX7ULP TPM module, TPM's full
230 name is Low Power Timer/Pulse Width Modulation Module.
232 To compile this driver as a module, choose M here: the module
233 will be called pwm-imx-tpm.
236 tristate "Ingenic JZ47xx PWM support"
237 depends on MACH_INGENIC
238 depends on COMMON_CLK
241 Generic PWM framework driver for Ingenic JZ47xx based
244 To compile this driver as a module, choose M here: the module
245 will be called pwm-jz4740.
248 tristate "TI/National Semiconductor LP3943 PWM support"
249 depends on MFD_LP3943
251 Generic PWM framework driver for LP3943 which supports two PWM
254 To compile this driver as a module, choose M here: the module
255 will be called pwm-lp3943.
257 config PWM_LPC18XX_SCT
258 tristate "LPC18xx/43xx PWM/SCT support"
259 depends on ARCH_LPC18XX || COMPILE_TEST
261 Generic PWM framework driver for NXP LPC18xx PWM/SCT which
262 supports 16 channels.
263 A maximum of 15 channels can be requested simultaneously and
264 must have the same period.
266 To compile this driver as a module, choose M here: the module
267 will be called pwm-lpc18xx-sct.
270 tristate "LPC32XX PWM support"
271 depends on ARCH_LPC32XX || COMPILE_TEST
273 Generic PWM framework driver for LPC32XX. The LPC32XX SOC has two
276 To compile this driver as a module, choose M here: the module
277 will be called pwm-lpc32xx.
283 tristate "Intel LPSS PWM PCI driver"
284 depends on X86 && PCI
287 The PCI driver for Intel Low Power Subsystem PWM controller.
289 To compile this driver as a module, choose M here: the module
290 will be called pwm-lpss-pci.
292 config PWM_LPSS_PLATFORM
293 tristate "Intel LPSS PWM platform driver"
294 depends on X86 && ACPI
297 The platform driver for Intel Low Power Subsystem PWM controller.
299 To compile this driver as a module, choose M here: the module
300 will be called pwm-lpss-platform.
303 tristate "Amlogic Meson PWM driver"
304 depends on ARCH_MESON || COMPILE_TEST
305 depends on COMMON_CLK
307 The platform driver for Amlogic Meson PWM controller.
309 To compile this driver as a module, choose M here: the module
310 will be called pwm-meson.
313 tristate "MediaTek display PWM driver"
314 depends on ARCH_MEDIATEK || COMPILE_TEST
317 Generic PWM framework driver for MediaTek disp-pwm device.
318 The PWM is used to control the backlight brightness for display.
320 To compile this driver as a module, choose M here: the module
321 will be called pwm-mtk-disp.
324 tristate "MediaTek PWM support"
325 depends on ARCH_MEDIATEK || RALINK || COMPILE_TEST
327 Generic PWM framework driver for Mediatek ARM SoC.
329 To compile this driver as a module, choose M here: the module
330 will be called pwm-mediatek.
333 tristate "Freescale MXS PWM support"
335 depends on ARCH_MXS || COMPILE_TEST
338 Generic PWM framework driver for Freescale MXS.
340 To compile this driver as a module, choose M here: the module
341 will be called pwm-mxs.
343 config PWM_OMAP_DMTIMER
344 tristate "OMAP Dual-Mode Timer PWM support"
346 depends on OMAP_DM_TIMER || COMPILE_TEST
348 Generic PWM framework driver for OMAP Dual-Mode Timer PWM output
350 To compile this driver as a module, choose M here: the module
351 will be called pwm-omap-dmtimer
354 tristate "NXP PCA9685 PWM driver"
358 Generic PWM framework driver for NXP PCA9685 LED controller.
360 To compile this driver as a module, choose M here: the module
361 will be called pwm-pca9685.
364 tristate "PKUnity NetBook-0916 PWM support"
367 Generic PWM framework driver for PKUnity NetBook-0916.
369 To compile this driver as a module, choose M here: the module
370 will be called pwm-puv3.
373 tristate "PXA PWM support"
374 depends on ARCH_PXA || COMPILE_TEST
376 Generic PWM framework driver for PXA.
378 To compile this driver as a module, choose M here: the module
379 will be called pwm-pxa.
382 tristate "Renesas R-Car PWM support"
383 depends on ARCH_RENESAS || COMPILE_TEST
386 This driver exposes the PWM Timer controller found in Renesas
387 R-Car chips through the PWM API.
389 To compile this driver as a module, choose M here: the module
390 will be called pwm-rcar.
392 config PWM_RENESAS_TPU
393 tristate "Renesas TPU PWM support"
394 depends on ARCH_RENESAS || COMPILE_TEST
397 This driver exposes the Timer Pulse Unit (TPU) PWM controller found
398 in Renesas chips through the PWM API.
400 To compile this driver as a module, choose M here: the module
401 will be called pwm-renesas-tpu.
404 tristate "Rockchip PWM support"
405 depends on ARCH_ROCKCHIP || COMPILE_TEST
407 Generic PWM framework driver for the PWM controller found on
411 tristate "Samsung PWM support"
412 depends on PLAT_SAMSUNG || ARCH_EXYNOS || COMPILE_TEST
414 Generic PWM framework driver for Samsung.
416 To compile this driver as a module, choose M here: the module
417 will be called pwm-samsung.
420 tristate "SiFive PWM support"
422 depends on COMMON_CLK
423 depends on RISCV || COMPILE_TEST
425 Generic PWM framework driver for SiFive SoCs.
427 To compile this driver as a module, choose M here: the module
428 will be called pwm-sifive.
431 tristate "STMicroelectronics SPEAr PWM support"
432 depends on PLAT_SPEAR || COMPILE_TEST
435 Generic PWM framework driver for the PWM controller on ST
438 To compile this driver as a module, choose M here: the module
439 will be called pwm-spear.
442 tristate "Spreadtrum PWM support"
443 depends on ARCH_SPRD || COMPILE_TEST
446 Generic PWM framework driver for the PWM controller on
449 To compile this driver as a module, choose M here: the module
450 will be called pwm-sprd.
453 tristate "STiH4xx PWM support"
454 depends on ARCH_STI || COMPILE_TEST
457 Generic PWM framework driver for STiH4xx SoCs.
459 To compile this driver as a module, choose M here: the module
460 will be called pwm-sti.
463 tristate "STMicroelectronics STM32 PWM"
464 depends on MFD_STM32_TIMERS || COMPILE_TEST
466 Generic PWM framework driver for STM32 SoCs.
468 To compile this driver as a module, choose M here: the module
469 will be called pwm-stm32.
472 tristate "STMicroelectronics STM32 PWM LP"
473 depends on MFD_STM32_LPTIMER || COMPILE_TEST
475 Generic PWM framework driver for STMicroelectronics STM32 SoCs
476 with Low-Power Timer (LPTIM).
478 To compile this driver as a module, choose M here: the module
479 will be called pwm-stm32-lp.
482 bool "STMPE expander PWM export"
485 This enables support for the PWMs found in the STMPE I/O
489 tristate "Allwinner PWM support"
490 depends on ARCH_SUNXI || COMPILE_TEST
491 depends on HAS_IOMEM && COMMON_CLK
493 Generic PWM framework driver for Allwinner SoCs.
495 To compile this driver as a module, choose M here: the module
496 will be called pwm-sun4i.
499 tristate "NVIDIA Tegra PWM support"
500 depends on ARCH_TEGRA || COMPILE_TEST
502 Generic PWM framework driver for the PWFM controller found on NVIDIA
505 To compile this driver as a module, choose M here: the module
506 will be called pwm-tegra.
509 tristate "ECAP PWM support"
510 depends on ARCH_OMAP2PLUS || ARCH_DAVINCI_DA8XX || ARCH_KEYSTONE || ARCH_K3 || COMPILE_TEST
512 PWM driver support for the ECAP APWM controller found on TI SOCs
514 To compile this driver as a module, choose M here: the module
515 will be called pwm-tiecap.
518 tristate "EHRPWM PWM support"
519 depends on ARCH_OMAP2PLUS || ARCH_DAVINCI_DA8XX || ARCH_K3 || COMPILE_TEST
521 PWM driver support for the EHRPWM controller found on TI SOCs
523 To compile this driver as a module, choose M here: the module
524 will be called pwm-tiehrpwm.
527 tristate "TWL4030/6030 PWM support"
528 depends on TWL4030_CORE
530 Generic PWM framework driver for TWL4030/6030.
532 To compile this driver as a module, choose M here: the module
533 will be called pwm-twl.
536 tristate "TWL4030/6030 PWM support for LED drivers"
537 depends on TWL4030_CORE
539 Generic PWM framework driver for TWL4030/6030 LED terminals.
541 To compile this driver as a module, choose M here: the module
542 will be called pwm-twl-led.
545 tristate "vt8500 PWM support"
546 depends on ARCH_VT8500 || COMPILE_TEST
548 Generic PWM framework driver for vt8500.
550 To compile this driver as a module, choose M here: the module
551 will be called pwm-vt8500.
554 tristate "ZTE ZX PWM support"
555 depends on ARCH_ZX || COMPILE_TEST
557 Generic PWM framework driver for ZTE ZX family SoCs.
559 To compile this driver as a module, choose M here: the module
560 will be called pwm-zx.