watchdog: add support for sl28cpld watchdog
[linux-block.git] / drivers / pwm / Kconfig
CommitLineData
ec8f24b7 1# SPDX-License-Identifier: GPL-2.0-only
0c2498f1 2menuconfig PWM
b817bf5c 3 bool "Pulse-Width Modulation (PWM) Support"
0c2498f1 4 help
b817bf5c 5 Generic Pulse-Width Modulation (PWM) support.
0c2498f1 6
b817bf5c
TR
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
12 display backlights.
13
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.
20
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.
27
28 If unsure, say no.
0c2498f1
SH
29
30if PWM
31
76abbdde
HS
32config PWM_SYSFS
33 bool
34 default y if SYSFS
35
3ad1f3a3
UKK
36config PWM_DEBUG
37 bool "PWM lowlevel drivers additional checks and debug messages"
38 depends on DEBUG_KERNEL
39 help
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.
44
6173f8f4
TR
45config PWM_AB8500
46 tristate "AB8500 PWM support"
47 depends on AB8500_CORE && ARCH_U8500
48 help
49 Generic PWM framework driver for Analog Baseband AB8500.
50
51 To compile this driver as a module, choose M here: the module
52 will be called pwm-ab8500.
53
32b16d46
BS
54config PWM_ATMEL
55 tristate "Atmel PWM support"
e96c0ff4
KK
56 depends on OF
57 depends on ARCH_AT91 || COMPILE_TEST
32b16d46
BS
58 help
59 Generic PWM framework driver for Atmel SoC.
60
61 To compile this driver as a module, choose M here: the module
62 will be called pwm-atmel.
63
2b4984be
BB
64config PWM_ATMEL_HLCDC_PWM
65 tristate "Atmel HLCDC PWM support"
66 depends on MFD_ATMEL_HLCDC
d2048c49 67 depends on HAVE_CLK
2b4984be
BB
68 help
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.
72
73 To compile this driver as a module, choose M here: the module
74 will be called pwm-atmel-hlcdc.
75
9421bade 76config PWM_ATMEL_TCB
b133d2a1 77 tristate "Atmel TC Block PWM support"
9421bade
BB
78 depends on ATMEL_TCLIB && OF
79 help
80 Generic PWM framework driver for Atmel Timer Counter Block.
81
82 A Timer Counter Block provides 6 PWM devices grouped by 2.
83 Devices in a given group must have the same period.
84
85 To compile this driver as a module, choose M here: the module
86 will be called pwm-atmel-tcb.
87
daa5abc4
YRDR
88config PWM_BCM_IPROC
89 tristate "iProc PWM support"
5bf22ff3
SB
90 depends on ARCH_BCM_IPROC || COMPILE_TEST
91 depends on COMMON_CLK
92 default ARCH_BCM_IPROC
daa5abc4
YRDR
93 help
94 Generic PWM framework driver for Broadcom iProc PWM block. This
95 block is used in Broadcom iProc SoC's.
96
97 To compile this driver as a module, choose M here: the module
98 will be called pwm-bcm-iproc.
99
6a4e4bff
TK
100config PWM_BCM_KONA
101 tristate "Kona PWM support"
88a053d2
CP
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
6a4e4bff
TK
105 help
106 Generic PWM framework driver for Broadcom Kona PWM block.
107
108 To compile this driver as a module, choose M here: the module
109 will be called pwm-bcm-kona.
110
e5a06dc5
BT
111config PWM_BCM2835
112 tristate "BCM2835 PWM support"
e96c0ff4 113 depends on ARCH_BCM2835 || ARCH_BRCMSTB || COMPILE_TEST
e5a06dc5
BT
114 help
115 PWM framework driver for BCM2835 controller (Raspberry Pi)
116
117 To compile this driver as a module, choose M here: the module
118 will be called pwm-bcm2835.
119
59d5c8b1
AT
120config PWM_BERLIN
121 tristate "Marvell Berlin PWM support"
e96c0ff4 122 depends on ARCH_BERLIN || COMPILE_TEST
59d5c8b1
AT
123 help
124 PWM framework driver for Marvell Berlin SoCs.
125
126 To compile this driver as a module, choose M here: the module
127 will be called pwm-berlin.
128
3a9f5957
FF
129config PWM_BRCMSTB
130 tristate "Broadcom STB PWM support"
e96c0ff4 131 depends on ARCH_BRCMSTB || BMIPS_GENERIC || COMPILE_TEST
3a9f5957
FF
132 help
133 Generic PWM framework driver for the Broadcom Set-top-Box
134 SoCs (BCM7xxx).
135
136 To compile this driver as a module, choose M Here: the module
137 will be called pwm-brcmstb.c.
138
7eb3f6ff
AS
139config PWM_CLPS711X
140 tristate "CLPS711X PWM support"
141 depends on ARCH_CLPS711X || COMPILE_TEST
dec02f98 142 depends on HAS_IOMEM
7eb3f6ff
AS
143 help
144 Generic PWM framework driver for Cirrus Logic CLPS711X.
145
146 To compile this driver as a module, choose M here: the module
147 will be called pwm-clps711x.
148
a3f37a10
SK
149config PWM_CRC
150 bool "Intel Crystalcove (CRC) PWM support"
151 depends on X86 && INTEL_SOC_PMIC
152 help
153 Generic PWM framework driver for Crystalcove (CRC) PMIC based PWM
154 control.
155
1f0d3bb0
BN
156config PWM_CROS_EC
157 tristate "ChromeOS EC PWM driver"
47f11e0b 158 depends on CROS_EC
1f0d3bb0
BN
159 help
160 PWM driver for exposing a PWM attached to the ChromeOS Embedded
161 Controller.
162
a2308698
HS
163config PWM_EP93XX
164 tristate "Cirrus Logic EP93xx PWM support"
e96c0ff4 165 depends on ARCH_EP93XX || COMPILE_TEST
a2308698
HS
166 help
167 Generic PWM framework driver for Cirrus Logic EP93xx.
168
169 To compile this driver as a module, choose M here: the module
170 will be called pwm-ep93xx.
171
b505183b
XL
172config PWM_FSL_FTM
173 tristate "Freescale FlexTimer Module (FTM) PWM support"
36d5be4b 174 depends on HAS_IOMEM
b505183b 175 depends on OF
00018a8a 176 select REGMAP_MMIO
b505183b
XL
177 help
178 Generic FTM PWM framework driver for Freescale VF610 and
179 Layerscape LS-1 SoCs.
180
181 To compile this driver as a module, choose M here: the module
182 will be called pwm-fsl-ftm.
183
d09f0081 184config PWM_HIBVT
185 tristate "HiSilicon BVT PWM support"
186 depends on ARCH_HISI || COMPILE_TEST
187 help
188 Generic PWM framework driver for HiSilicon BVT SoCs.
189
190 To compile this driver as a module, choose M here: the module
191 will be called pwm-hibvt.
192
277bb6a2
NT
193config PWM_IMG
194 tristate "Imagination Technologies PWM driver"
195 depends on HAS_IOMEM
196 depends on MFD_SYSCON
197 depends on COMMON_CLK
198 depends on MIPS || COMPILE_TEST
199 help
200 Generic PWM framework driver for Imagination Technologies
201 PWM block which supports 4 channels.
202
203 To compile this driver as a module, choose M here: the module
204 will be called pwm-img
205
d80f8206
UKK
206config PWM_IMX1
207 tristate "i.MX1 PWM support"
e96c0ff4 208 depends on ARCH_MXC || COMPILE_TEST
29693248 209 help
d80f8206 210 Generic PWM framework driver for i.MX1 and i.MX21
29693248
SH
211
212 To compile this driver as a module, choose M here: the module
d80f8206
UKK
213 will be called pwm-imx1.
214
215config PWM_IMX27
216 tristate "i.MX27 PWM support"
e96c0ff4 217 depends on ARCH_MXC || COMPILE_TEST
d80f8206
UKK
218 help
219 Generic PWM framework driver for i.MX27 and later i.MX SoCs.
220
221 To compile this driver as a module, choose M here: the module
222 will be called pwm-imx27.
29693248 223
738a1cfe
AH
224config PWM_IMX_TPM
225 tristate "i.MX TPM PWM support"
226 depends on ARCH_MXC || COMPILE_TEST
227 depends on HAVE_CLK && HAS_IOMEM
228 help
229 Generic PWM framework driver for i.MX7ULP TPM module, TPM's full
230 name is Low Power Timer/Pulse Width Modulation Module.
231
232 To compile this driver as a module, choose M here: the module
233 will be called pwm-imx-tpm.
234
6f0841a8
JL
235config PWM_IQS620A
236 tristate "Azoteq IQS620A PWM support"
237 depends on MFD_IQS62X || COMPILE_TEST
238 help
239 Generic PWM framework driver for the Azoteq IQS620A multi-function
240 sensor.
241
242 To compile this driver as a module, choose M here: the module will
243 be called pwm-iqs620a.
244
f6b8a570 245config PWM_JZ4740
b4190062 246 tristate "Ingenic JZ47xx PWM support"
b48d49e0 247 depends on MIPS
ce1f9cec 248 depends on COMMON_CLK
c2693514 249 select MFD_SYSCON
f6b8a570 250 help
b4190062 251 Generic PWM framework driver for Ingenic JZ47xx based
f6b8a570
TR
252 machines.
253
254 To compile this driver as a module, choose M here: the module
255 will be called pwm-jz4740.
256
af66b3c0
MK
257config PWM_LP3943
258 tristate "TI/National Semiconductor LP3943 PWM support"
259 depends on MFD_LP3943
260 help
261 Generic PWM framework driver for LP3943 which supports two PWM
262 channels.
263
264 To compile this driver as a module, choose M here: the module
265 will be called pwm-lp3943.
266
841e6f90
AA
267config PWM_LPC18XX_SCT
268 tristate "LPC18xx/43xx PWM/SCT support"
e96c0ff4 269 depends on ARCH_LPC18XX || COMPILE_TEST
841e6f90
AA
270 help
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.
275
276 To compile this driver as a module, choose M here: the module
277 will be called pwm-lpc18xx-sct.
278
2132fa8d
APS
279config PWM_LPC32XX
280 tristate "LPC32XX PWM support"
e96c0ff4 281 depends on ARCH_LPC32XX || COMPILE_TEST
2132fa8d
APS
282 help
283 Generic PWM framework driver for LPC32XX. The LPC32XX SOC has two
284 PWM controllers.
285
286 To compile this driver as a module, choose M here: the module
287 will be called pwm-lpc32xx.
288
d16a5aa9 289config PWM_LPSS
6f90a00c 290 tristate
d16a5aa9 291
c558e39e
AS
292config PWM_LPSS_PCI
293 tristate "Intel LPSS PWM PCI driver"
6f90a00c
AS
294 depends on X86 && PCI
295 select PWM_LPSS
c558e39e
AS
296 help
297 The PCI driver for Intel Low Power Subsystem PWM controller.
298
299 To compile this driver as a module, choose M here: the module
300 will be called pwm-lpss-pci.
301
302config PWM_LPSS_PLATFORM
303 tristate "Intel LPSS PWM platform driver"
6f90a00c
AS
304 depends on X86 && ACPI
305 select PWM_LPSS
c558e39e
AS
306 help
307 The platform driver for Intel Low Power Subsystem PWM controller.
308
309 To compile this driver as a module, choose M here: the module
310 will be called pwm-lpss-platform.
311
211ed630
NA
312config PWM_MESON
313 tristate "Amlogic Meson PWM driver"
e96c0ff4
KK
314 depends on ARCH_MESON || COMPILE_TEST
315 depends on COMMON_CLK
211ed630
NA
316 help
317 The platform driver for Amlogic Meson PWM controller.
318
319 To compile this driver as a module, choose M here: the module
320 will be called pwm-meson.
321
7e3b7dc7
YH
322config PWM_MTK_DISP
323 tristate "MediaTek display PWM driver"
324 depends on ARCH_MEDIATEK || COMPILE_TEST
325 depends on HAS_IOMEM
326 help
327 Generic PWM framework driver for MediaTek disp-pwm device.
328 The PWM is used to control the backlight brightness for display.
329
330 To compile this driver as a module, choose M here: the module
331 will be called pwm-mtk-disp.
332
caf065f8
JC
333config PWM_MEDIATEK
334 tristate "MediaTek PWM support"
8cdc43af 335 depends on ARCH_MEDIATEK || RALINK || COMPILE_TEST
caf065f8
JC
336 help
337 Generic PWM framework driver for Mediatek ARM SoC.
338
339 To compile this driver as a module, choose M here: the module
aa12d7a7 340 will be called pwm-mediatek.
caf065f8 341
4dce82c1
SG
342config PWM_MXS
343 tristate "Freescale MXS PWM support"
e96c0ff4
KK
344 depends on OF
345 depends on ARCH_MXS || COMPILE_TEST
01bf32e9 346 select STMP_DEVICE
4dce82c1
SG
347 help
348 Generic PWM framework driver for Freescale MXS.
349
350 To compile this driver as a module, choose M here: the module
351 will be called pwm-mxs.
352
6604c655
NA
353config PWM_OMAP_DMTIMER
354 tristate "OMAP Dual-Mode Timer PWM support"
9f2919e9
UKK
355 depends on OF
356 depends on OMAP_DM_TIMER || COMPILE_TEST
6604c655
NA
357 help
358 Generic PWM framework driver for OMAP Dual-Mode Timer PWM output
359
360 To compile this driver as a module, choose M here: the module
361 will be called pwm-omap-dmtimer
362
88b613e6
ST
363config PWM_PCA9685
364 tristate "NXP PCA9685 PWM driver"
912b8439 365 depends on I2C
2c80a492 366 select REGMAP_I2C
88b613e6
ST
367 help
368 Generic PWM framework driver for NXP PCA9685 LED controller.
369
370 To compile this driver as a module, choose M here: the module
371 will be called pwm-pca9685.
372
17b2b478
TR
373config PWM_PXA
374 tristate "PXA PWM support"
e96c0ff4 375 depends on ARCH_PXA || COMPILE_TEST
17b2b478
TR
376 help
377 Generic PWM framework driver for PXA.
378
379 To compile this driver as a module, choose M here: the module
380 will be called pwm-pxa.
381
ed6c1476
YS
382config PWM_RCAR
383 tristate "Renesas R-Car PWM support"
48169988 384 depends on ARCH_RENESAS || COMPILE_TEST
ed6c1476
YS
385 depends on HAS_IOMEM
386 help
387 This driver exposes the PWM Timer controller found in Renesas
388 R-Car chips through the PWM API.
389
390 To compile this driver as a module, choose M here: the module
391 will be called pwm-rcar.
392
99b82abb
LP
393config PWM_RENESAS_TPU
394 tristate "Renesas TPU PWM support"
03d99531 395 depends on ARCH_RENESAS || COMPILE_TEST
2974b098 396 depends on HAS_IOMEM
99b82abb
LP
397 help
398 This driver exposes the Timer Pulse Unit (TPU) PWM controller found
399 in Renesas chips through the PWM API.
400
401 To compile this driver as a module, choose M here: the module
402 will be called pwm-renesas-tpu.
403
101353c8
BG
404config PWM_ROCKCHIP
405 tristate "Rockchip PWM support"
e96c0ff4 406 depends on ARCH_ROCKCHIP || COMPILE_TEST
101353c8
BG
407 help
408 Generic PWM framework driver for the PWM controller found on
409 Rockchip SoCs.
410
215c29d3 411config PWM_SAMSUNG
b133d2a1 412 tristate "Samsung PWM support"
e96c0ff4 413 depends on PLAT_SAMSUNG || ARCH_EXYNOS || COMPILE_TEST
215c29d3
SH
414 help
415 Generic PWM framework driver for Samsung.
416
417 To compile this driver as a module, choose M here: the module
418 will be called pwm-samsung.
419
9e37a53e
YS
420config PWM_SIFIVE
421 tristate "SiFive PWM support"
422 depends on OF
423 depends on COMMON_CLK
424 depends on RISCV || COMPILE_TEST
425 help
426 Generic PWM framework driver for SiFive SoCs.
427
428 To compile this driver as a module, choose M here: the module
429 will be called pwm-sifive.
430
ce20364b
SH
431config PWM_SPEAR
432 tristate "STMicroelectronics SPEAr PWM support"
e96c0ff4 433 depends on PLAT_SPEAR || COMPILE_TEST
ce20364b
SH
434 depends on OF
435 help
436 Generic PWM framework driver for the PWM controller on ST
437 SPEAr SoCs.
438
439 To compile this driver as a module, choose M here: the module
440 will be called pwm-spear.
441
8aae4b02
BW
442config PWM_SPRD
443 tristate "Spreadtrum PWM support"
444 depends on ARCH_SPRD || COMPILE_TEST
445 depends on HAS_IOMEM
446 help
447 Generic PWM framework driver for the PWM controller on
448 Spreadtrum SoCs.
449
450 To compile this driver as a module, choose M here: the module
451 will be called pwm-sprd.
452
378fe115
LJ
453config PWM_STI
454 tristate "STiH4xx PWM support"
e96c0ff4 455 depends on ARCH_STI || COMPILE_TEST
378fe115
LJ
456 depends on OF
457 help
458 Generic PWM framework driver for STiH4xx SoCs.
459
460 To compile this driver as a module, choose M here: the module
461 will be called pwm-sti.
462
7edf7369
BG
463config PWM_STM32
464 tristate "STMicroelectronics STM32 PWM"
e96c0ff4 465 depends on MFD_STM32_TIMERS || COMPILE_TEST
7edf7369
BG
466 help
467 Generic PWM framework driver for STM32 SoCs.
468
469 To compile this driver as a module, choose M here: the module
470 will be called pwm-stm32.
471
e70a540b
FG
472config PWM_STM32_LP
473 tristate "STMicroelectronics STM32 PWM LP"
474 depends on MFD_STM32_LPTIMER || COMPILE_TEST
475 help
476 Generic PWM framework driver for STMicroelectronics STM32 SoCs
477 with Low-Power Timer (LPTIM).
478
479 To compile this driver as a module, choose M here: the module
480 will be called pwm-stm32-lp.
481
ef1f09ec
LW
482config PWM_STMPE
483 bool "STMPE expander PWM export"
484 depends on MFD_STMPE
485 help
486 This enables support for the PWMs found in the STMPE I/O
487 expanders.
488
09853ce7
AB
489config PWM_SUN4I
490 tristate "Allwinner PWM support"
491 depends on ARCH_SUNXI || COMPILE_TEST
492 depends on HAS_IOMEM && COMMON_CLK
493 help
494 Generic PWM framework driver for Allwinner SoCs.
495
496 To compile this driver as a module, choose M here: the module
497 will be called pwm-sun4i.
498
0134b932
TR
499config PWM_TEGRA
500 tristate "NVIDIA Tegra PWM support"
e96c0ff4 501 depends on ARCH_TEGRA || COMPILE_TEST
0134b932
TR
502 help
503 Generic PWM framework driver for the PWFM controller found on NVIDIA
504 Tegra SoCs.
505
506 To compile this driver as a module, choose M here: the module
507 will be called pwm-tegra.
508
f24e5641 509config PWM_TIECAP
8e0cb05b 510 tristate "ECAP PWM support"
e96c0ff4 511 depends on ARCH_OMAP2PLUS || ARCH_DAVINCI_DA8XX || ARCH_KEYSTONE || ARCH_K3 || COMPILE_TEST
8e0cb05b 512 help
6f37709f 513 PWM driver support for the ECAP APWM controller found on TI SOCs
8e0cb05b
PA
514
515 To compile this driver as a module, choose M here: the module
516 will be called pwm-tiecap.
517
f24e5641 518config PWM_TIEHRPWM
19891b20 519 tristate "EHRPWM PWM support"
e96c0ff4 520 depends on ARCH_OMAP2PLUS || ARCH_DAVINCI_DA8XX || ARCH_K3 || COMPILE_TEST
19891b20 521 help
efc80fb3 522 PWM driver support for the EHRPWM controller found on TI SOCs
19891b20
PA
523
524 To compile this driver as a module, choose M here: the module
525 will be called pwm-tiehrpwm.
526
3744c263
PU
527config PWM_TWL
528 tristate "TWL4030/6030 PWM support"
529 depends on TWL4030_CORE
530 help
531 Generic PWM framework driver for TWL4030/6030.
532
533 To compile this driver as a module, choose M here: the module
534 will be called pwm-twl.
535
aa765647
PU
536config PWM_TWL_LED
537 tristate "TWL4030/6030 PWM support for LED drivers"
538 depends on TWL4030_CORE
539 help
540 Generic PWM framework driver for TWL4030/6030 LED terminals.
541
542 To compile this driver as a module, choose M here: the module
543 will be called pwm-twl-led.
544
a245cceb 545config PWM_VT8500
b133d2a1 546 tristate "vt8500 PWM support"
e96c0ff4 547 depends on ARCH_VT8500 || COMPILE_TEST
a245cceb
SH
548 help
549 Generic PWM framework driver for vt8500.
550
551 To compile this driver as a module, choose M here: the module
552 will be called pwm-vt8500.
553
4836193c
SG
554config PWM_ZX
555 tristate "ZTE ZX PWM support"
e96c0ff4 556 depends on ARCH_ZX || COMPILE_TEST
4836193c
SG
557 help
558 Generic PWM framework driver for ZTE ZX family SoCs.
559
560 To compile this driver as a module, choose M here: the module
561 will be called pwm-zx.
562
0c2498f1 563endif