xref: /openbmc/linux/drivers/gpu/drm/omapdrm/Kconfig (revision 5fdc39e0)
1# SPDX-License-Identifier: GPL-2.0-only
2config DRM_OMAP
3	tristate "OMAP DRM"
4	depends on DRM && OF
5	depends on ARCH_OMAP2PLUS
6	select DRM_KMS_HELPER
7	select FB_DMAMEM_HELPERS_DEFERRED if DRM_FBDEV_EMULATION
8	select VIDEOMODE_HELPERS
9	select HDMI
10	default n
11	help
12	  DRM display driver for OMAP2/3/4 based boards.
13
14if DRM_OMAP
15
16config OMAP2_DSS_DEBUG
17	bool "Debug support"
18	default n
19	help
20	  This enables printing of debug messages. Alternatively, debug messages
21	  can also be enabled by setting CONFIG_DYNAMIC_DEBUG and then setting
22	  appropriate flags in <debugfs>/dynamic_debug/control.
23
24config OMAP2_DSS_DEBUGFS
25	bool "Debugfs filesystem support"
26	depends on DEBUG_FS
27	default n
28	help
29	  This enables debugfs for OMAPDSS at <debugfs>/omapdss. This enables
30	  querying about clock configuration and register configuration of dss,
31	  dispc, dsi, hdmi and rfbi.
32
33config OMAP2_DSS_COLLECT_IRQ_STATS
34	bool "Collect DSS IRQ statistics"
35	depends on OMAP2_DSS_DEBUGFS
36	default n
37	help
38	  Collect DSS IRQ statistics, printable via debugfs.
39
40	  The statistics can be found from
41	  <debugfs>/omapdss/dispc_irq for DISPC interrupts, and
42	  <debugfs>/omapdss/dsi_irq for DSI interrupts.
43
44config OMAP2_DSS_DPI
45	bool "DPI support"
46	default y
47	help
48	  DPI Interface. This is the Parallel Display Interface.
49
50config OMAP2_DSS_VENC
51	bool "VENC support"
52	default y
53	help
54	  OMAP Video Encoder support for S-Video and composite TV-out.
55
56config OMAP2_DSS_HDMI_COMMON
57	bool
58
59config OMAP4_DSS_HDMI
60	bool "HDMI support for OMAP4"
61	default y
62	select OMAP2_DSS_HDMI_COMMON
63	help
64	  HDMI support for OMAP4 based SoCs.
65
66config OMAP4_DSS_HDMI_CEC
67	bool "Enable HDMI CEC support for OMAP4"
68	depends on OMAP4_DSS_HDMI
69	select CEC_CORE
70	default y
71	help
72	  When selected the HDMI transmitter will support the CEC feature.
73
74config OMAP5_DSS_HDMI
75	bool "HDMI support for OMAP5"
76	default n
77	select OMAP2_DSS_HDMI_COMMON
78	help
79	  HDMI Interface for OMAP5 and similar cores. This adds the High
80	  Definition Multimedia Interface. See http://www.hdmi.org/ for HDMI
81	  specification.
82
83config OMAP2_DSS_SDI
84	bool "SDI support"
85	default n
86	help
87	  SDI (Serial Display Interface) support.
88
89	  SDI is a high speed one-way display serial bus between the host
90	  processor and a display.
91
92config OMAP2_DSS_DSI
93	bool "DSI support"
94	default n
95	select DRM_MIPI_DSI
96	help
97	  MIPI DSI (Display Serial Interface) support.
98
99	  DSI is a high speed half-duplex serial interface between the host
100	  processor and a peripheral, such as a display or a framebuffer chip.
101
102	  See http://www.mipi.org/ for DSI specifications.
103
104config OMAP2_DSS_MIN_FCK_PER_PCK
105	int "Minimum FCK/PCK ratio (for scaling)"
106	range 0 32
107	default 0
108	help
109	  This can be used to adjust the minimum FCK/PCK ratio.
110
111	  With this you can make sure that DISPC FCK is at least
112	  n x PCK. Video plane scaling requires higher FCK than
113	  normally.
114
115	  If this is set to 0, there's no extra constraint on the
116	  DISPC FCK. However, the FCK will at minimum be
117	  2xPCK (if active matrix) or 3xPCK (if passive matrix).
118
119	  Max FCK is 173MHz, so this doesn't work if your PCK
120	  is very high.
121
122config OMAP2_DSS_SLEEP_AFTER_VENC_RESET
123	bool "Sleep 20ms after VENC reset"
124	default y
125	help
126	  There is a 20ms sleep after VENC reset which seemed to fix the
127	  reset. The reason for the bug is unclear, and it's also unclear
128	  on what platforms this happens.
129
130	  This option enables the sleep, and is enabled by default. You can
131	  disable the sleep if it doesn't cause problems on your platform.
132
133endif
134