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 "Azoteq IQS620A PWM support"
237 depends on MFD_IQS62X || COMPILE_TEST
239 Generic PWM framework driver for the Azoteq IQS620A multi-function
242 To compile this driver as a module, choose M here: the module will
243 be called pwm-iqs620a.
246 tristate "Ingenic JZ47xx PWM support"
248 depends on COMMON_CLK
251 Generic PWM framework driver for Ingenic JZ47xx based
254 To compile this driver as a module, choose M here: the module
255 will be called pwm-jz4740.
258 tristate "TI/National Semiconductor LP3943 PWM support"
259 depends on MFD_LP3943
261 Generic PWM framework driver for LP3943 which supports two PWM
264 To compile this driver as a module, choose M here: the module
265 will be called pwm-lp3943.
267 config PWM_LPC18XX_SCT
268 tristate "LPC18xx/43xx PWM/SCT support"
269 depends on ARCH_LPC18XX || COMPILE_TEST
271 Generic PWM framework driver for NXP LPC18xx PWM/SCT which
272 supports 16 channels.
273 A maximum of 15 channels can be requested simultaneously and
274 must have the same period.
276 To compile this driver as a module, choose M here: the module
277 will be called pwm-lpc18xx-sct.
280 tristate "LPC32XX PWM support"
281 depends on ARCH_LPC32XX || COMPILE_TEST
283 Generic PWM framework driver for LPC32XX. The LPC32XX SOC has two
286 To compile this driver as a module, choose M here: the module
287 will be called pwm-lpc32xx.
293 tristate "Intel LPSS PWM PCI driver"
294 depends on X86 && PCI
297 The PCI 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-pci.
302 config PWM_LPSS_PLATFORM
303 tristate "Intel LPSS PWM platform driver"
304 depends on X86 && ACPI
307 The platform driver for Intel Low Power Subsystem PWM controller.
309 To compile this driver as a module, choose M here: the module
310 will be called pwm-lpss-platform.
313 tristate "Amlogic Meson PWM driver"
314 depends on ARCH_MESON || COMPILE_TEST
315 depends on COMMON_CLK
317 The platform driver for Amlogic Meson PWM controller.
319 To compile this driver as a module, choose M here: the module
320 will be called pwm-meson.
323 tristate "MediaTek display PWM driver"
324 depends on ARCH_MEDIATEK || COMPILE_TEST
327 Generic PWM framework driver for MediaTek disp-pwm device.
328 The PWM is used to control the backlight brightness for display.
330 To compile this driver as a module, choose M here: the module
331 will be called pwm-mtk-disp.
334 tristate "MediaTek PWM support"
335 depends on ARCH_MEDIATEK || RALINK || COMPILE_TEST
337 Generic PWM framework driver for Mediatek ARM SoC.
339 To compile this driver as a module, choose M here: the module
340 will be called pwm-mediatek.
343 tristate "Freescale MXS PWM support"
345 depends on ARCH_MXS || COMPILE_TEST
348 Generic PWM framework driver for Freescale MXS.
350 To compile this driver as a module, choose M here: the module
351 will be called pwm-mxs.
353 config PWM_OMAP_DMTIMER
354 tristate "OMAP Dual-Mode Timer PWM support"
356 depends on OMAP_DM_TIMER || COMPILE_TEST
358 Generic PWM framework driver for OMAP Dual-Mode Timer PWM output
360 To compile this driver as a module, choose M here: the module
361 will be called pwm-omap-dmtimer
364 tristate "NXP PCA9685 PWM driver"
368 Generic PWM framework driver for NXP PCA9685 LED controller.
370 To compile this driver as a module, choose M here: the module
371 will be called pwm-pca9685.
374 tristate "PXA PWM support"
375 depends on ARCH_PXA || COMPILE_TEST
377 Generic PWM framework driver for PXA.
379 To compile this driver as a module, choose M here: the module
380 will be called pwm-pxa.
383 tristate "Renesas R-Car PWM support"
384 depends on ARCH_RENESAS || COMPILE_TEST
387 This driver exposes the PWM Timer controller found in Renesas
388 R-Car chips through the PWM API.
390 To compile this driver as a module, choose M here: the module
391 will be called pwm-rcar.
393 config PWM_RENESAS_TPU
394 tristate "Renesas TPU PWM support"
395 depends on ARCH_RENESAS || COMPILE_TEST
398 This driver exposes the Timer Pulse Unit (TPU) PWM controller found
399 in Renesas chips through the PWM API.
401 To compile this driver as a module, choose M here: the module
402 will be called pwm-renesas-tpu.
405 tristate "Rockchip PWM support"
406 depends on ARCH_ROCKCHIP || COMPILE_TEST
408 Generic PWM framework driver for the PWM controller found on
412 tristate "Samsung PWM support"
413 depends on PLAT_SAMSUNG || ARCH_S5PV210 || ARCH_EXYNOS || COMPILE_TEST
415 Generic PWM framework driver for Samsung.
417 To compile this driver as a module, choose M here: the module
418 will be called pwm-samsung.
421 tristate "SiFive PWM support"
423 depends on COMMON_CLK
424 depends on RISCV || COMPILE_TEST
426 Generic PWM framework driver for SiFive SoCs.
428 To compile this driver as a module, choose M here: the module
429 will be called pwm-sifive.
432 tristate "Kontron sl28cpld PWM support"
433 depends on MFD_SL28CPLD || COMPILE_TEST
435 Generic PWM framework driver for board management controller
436 found on the Kontron sl28 CPLD.
438 To compile this driver as a module, choose M here: the module
439 will be called pwm-sl28cpld.
442 tristate "STMicroelectronics SPEAr PWM support"
443 depends on PLAT_SPEAR || COMPILE_TEST
446 Generic PWM framework driver for the PWM controller on ST
449 To compile this driver as a module, choose M here: the module
450 will be called pwm-spear.
453 tristate "Spreadtrum PWM support"
454 depends on ARCH_SPRD || COMPILE_TEST
457 Generic PWM framework driver for the PWM controller on
460 To compile this driver as a module, choose M here: the module
461 will be called pwm-sprd.
464 tristate "STiH4xx PWM support"
465 depends on ARCH_STI || COMPILE_TEST
468 Generic PWM framework driver for STiH4xx SoCs.
470 To compile this driver as a module, choose M here: the module
471 will be called pwm-sti.
474 tristate "STMicroelectronics STM32 PWM"
475 depends on MFD_STM32_TIMERS || COMPILE_TEST
477 Generic PWM framework driver for STM32 SoCs.
479 To compile this driver as a module, choose M here: the module
480 will be called pwm-stm32.
483 tristate "STMicroelectronics STM32 PWM LP"
484 depends on MFD_STM32_LPTIMER || COMPILE_TEST
486 Generic PWM framework driver for STMicroelectronics STM32 SoCs
487 with Low-Power Timer (LPTIM).
489 To compile this driver as a module, choose M here: the module
490 will be called pwm-stm32-lp.
493 bool "STMPE expander PWM export"
496 This enables support for the PWMs found in the STMPE I/O
500 tristate "Allwinner PWM support"
501 depends on ARCH_SUNXI || COMPILE_TEST
502 depends on HAS_IOMEM && COMMON_CLK
504 Generic PWM framework driver for Allwinner SoCs.
506 To compile this driver as a module, choose M here: the module
507 will be called pwm-sun4i.
510 tristate "NVIDIA Tegra PWM support"
511 depends on ARCH_TEGRA || COMPILE_TEST
513 Generic PWM framework driver for the PWFM controller found on NVIDIA
516 To compile this driver as a module, choose M here: the module
517 will be called pwm-tegra.
520 tristate "ECAP PWM support"
521 depends on ARCH_OMAP2PLUS || ARCH_DAVINCI_DA8XX || ARCH_KEYSTONE || ARCH_K3 || COMPILE_TEST
523 PWM driver support for the ECAP APWM controller found on TI SOCs
525 To compile this driver as a module, choose M here: the module
526 will be called pwm-tiecap.
529 tristate "EHRPWM PWM support"
530 depends on ARCH_OMAP2PLUS || ARCH_DAVINCI_DA8XX || ARCH_K3 || COMPILE_TEST
532 PWM driver support for the EHRPWM controller found on TI SOCs
534 To compile this driver as a module, choose M here: the module
535 will be called pwm-tiehrpwm.
538 tristate "TWL4030/6030 PWM support"
539 depends on TWL4030_CORE
541 Generic PWM framework driver for TWL4030/6030.
543 To compile this driver as a module, choose M here: the module
544 will be called pwm-twl.
547 tristate "TWL4030/6030 PWM support for LED drivers"
548 depends on TWL4030_CORE
550 Generic PWM framework driver for TWL4030/6030 LED terminals.
552 To compile this driver as a module, choose M here: the module
553 will be called pwm-twl-led.
556 tristate "vt8500 PWM support"
557 depends on ARCH_VT8500 || COMPILE_TEST
559 Generic PWM framework driver for vt8500.
561 To compile this driver as a module, choose M here: the module
562 will be called pwm-vt8500.
565 tristate "ZTE ZX PWM support"
566 depends on ARCH_ZX || COMPILE_TEST
568 Generic PWM framework driver for ZTE ZX family SoCs.
570 To compile this driver as a module, choose M here: the module
571 will be called pwm-zx.