menuconfig OMAP2_DSS tristate "OMAP2+ Display Subsystem support (EXPERIMENTAL)" depends on ARCH_OMAP2PLUS help OMAP2+ Display Subsystem support. if OMAP2_DSS config OMAP2_VRAM_SIZE int "VRAM size (MB)" range 0 32 default 0 help The amount of SDRAM to reserve at boot time for video RAM use. This VRAM will be used by omapfb and other drivers that need large continuous RAM area for video use. You can also set this with "vram=" kernel argument, or in the board file. config OMAP2_DSS_DEBUG_SUPPORT bool "Debug support" default y help This enables debug messages. You need to enable printing with 'debug' module parameter. config OMAP2_DSS_COLLECT_IRQ_STATS bool "Collect DSS IRQ statistics" depends on OMAP2_DSS_DEBUG_SUPPORT default n help Collect DSS IRQ statistics, printable via debugfs. The statistics can be found from /omapdss/dispc_irq for DISPC interrupts, and /omapdss/dsi_irq for DSI interrupts. config OMAP2_DSS_DPI bool "DPI support" default y help DPI Interface. This is the Parallel Display Interface. config OMAP2_DSS_RFBI bool "RFBI support" default n help MIPI DBI support (RFBI, Remote Framebuffer Interface, in Texas Instrument's terminology). DBI is a bus between the host processor and a peripheral, such as a display or a framebuffer chip. See http://www.mipi.org/ for DBI spesifications. config OMAP2_DSS_VENC bool "VENC support" default y help OMAP Video Encoder support for S-Video and composite TV-out. config OMAP4_DSS_HDMI bool "HDMI support" depends on ARCH_OMAP4 default y help HDMI Interface. This adds the High Definition Multimedia Interface. See http://www.hdmi.org/ for HDMI specification. config OMAP2_DSS_SDI bool "SDI support" depends on ARCH_OMAP3 default n help SDI (Serial Display Interface) support. SDI is a high speed one-way display serial bus between the host processor and a display. config OMAP2_DSS_DSI bool "DSI support" depends on ARCH_OMAP3 || ARCH_OMAP4 default n help MIPI DSI (Display Serial Interface) support. DSI is a high speed half-duplex serial interface between the host processor and a peripheral, such as a display or a framebuffer chip. See http://www.mipi.org/ for DSI spesifications. config OMAP2_DSS_FAKE_VSYNC bool "Fake VSYNC irq from manual update displays" default n help If this is selected, DSI will generate a fake DISPC VSYNC interrupt when DSI has sent a frame. This is only needed with DSI or RFBI displays using manual mode, and you want VSYNC to, for example, time animation. config OMAP2_DSS_MIN_FCK_PER_PCK int "Minimum FCK/PCK ratio (for scaling)" range 0 32 default 0 help This can be used to adjust the minimum FCK/PCK ratio. With this you can make sure that DISPC FCK is at least n x PCK. Video plane scaling requires higher FCK than normally. If this is set to 0, there's no extra constraint on the DISPC FCK. However, the FCK will at minimum be 2xPCK (if active matrix) or 3xPCK (if passive matrix). Max FCK is 173MHz, so this doesn't work if your PCK is very high. config OMAP2_DSS_SLEEP_BEFORE_RESET bool "Sleep 50ms before DSS reset" default y help For some unknown reason we may get SYNC_LOST errors from the display subsystem at initialization time if we don't sleep before resetting the DSS. See the source (dss.c) for more comments. However, 50ms is quite long time to sleep, and with some configurations the SYNC_LOST may never happen, so the sleep can be disabled here. config OMAP2_DSS_SLEEP_AFTER_VENC_RESET bool "Sleep 20ms after VENC reset" default y help There is a 20ms sleep after VENC reset which seemed to fix the reset. The reason for the bug is unclear, and it's also unclear on what platforms this happens. This option enables the sleep, and is enabled by default. You can disable the sleep if it doesn't cause problems on your platform. endif