1config DM_PWM
2	bool "Enable support for pulse-width modulation devices (PWM)"
3	depends on DM
4	help
5	  A pulse-width modulator emits a pulse of varying width and provides
6	  control over the duty cycle (high and low time) of the signal. This
7	  is often used to control a voltage level. The more time the PWM
8	  spends in the 'high' state, the higher the voltage. The PWM's
9	  frequency/period can be controlled along with the proportion of that
10	  time that the signal is high.
11
12config PWM_EXYNOS
13	bool "Enable support for the Exynos PWM"
14	depends on DM_PWM
15	help
16	  This PWM is found on Samsung Exynos 5250 and other Samsung SoCs. It
17	  supports a programmable period and duty cycle. A 32-bit counter is
18	  used. It provides 5 channels which can be independently
19	  programmed. Channel 4 (the last) is normally used as a timer.
20
21config PWM_IMX
22	bool "Enable support for i.MX27 and later PWM"
23	help
24	  This PWM is found i.MX27 and later i.MX SoCs.
25
26config PWM_MESON
27	bool "Enable support for Amlogic Meson SoCs PWM"
28	depends on DM_PWM
29	help
30	  This PWM is found on Amlogic Meson SoCs. It supports a
31	  programmable period and duty cycle for 2 independant channels.
32
33config PWM_MTK
34	bool "Enable support for MediaTek PWM"
35	depends on DM_PWM
36	help
37	  This PWM is found on MT7622, MT7623, and MT7629. It supports a
38	  programmable period and duty cycle.
39
40config PWM_ROCKCHIP
41	bool "Enable support for the Rockchip PWM"
42	depends on DM_PWM
43	help
44	  This PWM is found on RK3288 and other Rockchip SoCs. It supports a
45	  programmable period and duty cycle. A 32-bit counter is used.
46	  Various options provided in the hardware (such as capture mode and
47	  continuous/single-shot) are not supported by the driver.
48
49config PWM_SANDBOX
50	bool "Enable support for the sandbox PWM"
51	help
52	  This is a sandbox PWM used for testing. It provides 3 channels and
53	  records the settings passed into it, but otherwise does nothing
54	  useful. The PWM can be enabled but is not connected to any outputs
55	  so this is not very useful.
56
57config PWM_SIFIVE
58	bool "Enable support for SiFive PWM"
59	depends on DM_PWM
60	help
61	  This PWM is found SiFive's FU540 and other SoCs.
62
63config PWM_TEGRA
64	bool "Enable support for the Tegra PWM"
65	depends on DM_PWM
66	help
67	  This PWM is found on Tegra 20 and other Nvidia SoCs. It supports
68	  four channels with a programmable period and duty cycle. Only a
69	  32KHz clock is supported by the driver but the duty cycle is
70	  configurable.
71
72config PWM_SUNXI
73	bool "Enable support for the Allwinner Sunxi PWM"
74	depends on DM_PWM
75	help
76	  This PWM is found on H3, A64 and other Allwinner SoCs. It supports a
77	  programmable period and duty cycle. A 16-bit counter is used.
78
79config PWM_TI_EHRPWM
80	bool "Enable support for EHRPWM PWM"
81	depends on DM_PWM && ARCH_OMAP2PLUS
82	default y
83	help
84	  PWM driver support for the EHRPWM controller found on TI SOCs.
85