linux/drivers/gpu/drm/omapdrm/Kconfig
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   1# SPDX-License-Identifier: GPL-2.0-only
   2config DRM_OMAP
   3        tristate "OMAP DRM"
   4        depends on DRM
   5        depends on ARCH_OMAP2PLUS || ARCH_MULTIPLATFORM
   6        select OMAP2_DSS
   7        select DRM_KMS_HELPER
   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