drivers/video/Kconfig

   1 #
   2 # Video configuration
   3 #
   4
   5 menu "Graphics support"
   6
   7 config DM_VIDEO
   8         bool "Enable driver model support for LCD/video"
   9         depends on DM
  10         help
  11           This enables driver model for LCD and video devices. These support
  12           a bitmap display of various sizes and depths which can be drawn on
  13           to display a command-line console or splash screen. Enabling this
  14           option compiles in the video uclass and routes all LCD/video access
  15           through this.
  16
  17 config VIDEO_BPP8
  18         bool "Support 8-bit-per-pixel displays"
  19         depends on DM_VIDEO
  20         default y if DM_VIDEO
  21         help
  22           Support drawing text and bitmaps onto a 8-bit-per-pixel display.
  23           Enabling this will include code to support this display. Without
  24           this option, such displays will not be supported and console output
  25           will be empty.
  26
  27 config VIDEO_BPP16
  28         bool "Support 16-bit-per-pixel displays"
  29         depends on DM_VIDEO
  30         default y if DM_VIDEO
  31         help
  32           Support drawing text and bitmaps onto a 16-bit-per-pixel display.
  33           Enabling this will include code to support this display. Without
  34           this option, such displays will not be supported and console output
  35           will be empty.
  36
  37 config VIDEO_BPP32
  38         bool "Support 32-bit-per-pixel displays"
  39         depends on DM_VIDEO
  40         default y if DM_VIDEO
  41         help
  42           Support drawing text and bitmaps onto a 32-bit-per-pixel display.
  43           Enabling this will include code to support this display. Without
  44           this option, such displays will not be supported and console output
  45           will be empty.
  46
  47 config CONSOLE_NORMAL
  48         bool "Support a simple text console"
  49         depends on DM_VIDEO
  50         default y if DM_VIDEO
  51         help
  52           Support drawing text on the frame buffer console so that it can be
  53           used as a console. Rotation is not supported by this driver (see
  54           CONFIG_CONSOLE_ROTATION for that). A built-in 8x16 font is used
  55           for the display.
  56
  57 config CONSOLE_ROTATION
  58         bool "Support rotated displays"
  59         depends on DM_VIDEO
  60         help
  61           Sometimes, for example if the display is mounted in portrait
  62           mode or even if it's mounted landscape but rotated by 180degree,
  63           we need to rotate our content of the display relative to the
  64           framebuffer, so that user can read the messages which are
  65           printed out. Enable this option to include a text driver which can
  66           support this. The rotation is set by the 'rot' parameter in
  67           struct video_priv: 0=unrotated, 1=90 degrees clockwise, 2=180
  68           degrees, 3=270 degrees.
  69
  70 config CONSOLE_TRUETYPE
  71         bool "Support a console that uses TrueType fonts"
  72         depends on DM_VIDEO
  73         help
  74           TrueTrype fonts can provide outline-drawing capability rather than
  75           needing to provide a bitmap for each font and size that is needed.
  76           With this option you can adjust the text size and use a variety of
  77           fonts. Note that this is noticeably slower than with normal console.
  78
  79 config CONSOLE_TRUETYPE_SIZE
  80         int "TrueType font size"
  81         depends on CONSOLE_TRUETYPE
  82         default 18
  83         help
  84           This sets the font size for the console. The size is measured in
  85           pixels and is the nominal height of a character. Note that fonts
  86           are commonly measured in 'points', being 1/72 inch (about 3.52mm).
  87           However that measurement depends on the size of your display and
  88           there is no standard display density. At present there is not a
  89           method to select the display's physical size, which would allow
  90           U-Boot to calculate the correct font size.
  91
  92 source "drivers/video/fonts/Kconfig"
  93
  94 config VIDCONSOLE_AS_LCD
  95         bool "Use 'vidconsole' when 'lcd' is seen in stdout"
  96         depends on DM_VIDEO
  97         help
  98           This is a work-around for boards which have 'lcd' in their stdout
  99           environment variable, but have moved to use driver model for video.
 100           In this case the console will no-longer work. While it is possible
 101           to update the environment, the breakage may be confusing for users.
 102           This option will be removed around the end of 2016.
 103
 104 config VIDEO_COREBOOT
 105         bool "Enable coreboot framebuffer driver support"
 106         depends on X86 && SYS_COREBOOT
 107         help
 108           Turn on this option to enable a framebuffer driver when U-Boot is
 109           loaded by coreboot where the graphics device is configured by
 110           coreboot already. This can in principle be used with any platform
 111           that coreboot supports.
 112
 113 config VIDEO_VESA
 114         bool "Enable VESA video driver support"
 115         default n
 116         help
 117           Turn on this option to enable a very simple driver which uses vesa
 118           to discover the video mode and then provides a frame buffer for use
 119           by U-Boot. This can in principle be used with any platform that
 120           supports PCI and video cards that support VESA BIOS Extension (VBE).
 121
 122 config FRAMEBUFFER_SET_VESA_MODE
 123         bool "Set framebuffer graphics resolution"
 124         depends on VIDEO_VESA || VIDEO_BROADWELL_IGD
 125         help
 126           Set VESA/native framebuffer mode (needed for bootsplash and graphical
 127           framebuffer console)
 128
 129 choice
 130         prompt "framebuffer graphics resolution"
 131         default FRAMEBUFFER_VESA_MODE_117
 132         depends on FRAMEBUFFER_SET_VESA_MODE
 133         help
 134           This option sets the resolution used for the U-Boot framebuffer (and
 135           bootsplash screen).
 136
 137 config FRAMEBUFFER_VESA_MODE_100
 138         bool "640x400 256-color"
 139
 140 config FRAMEBUFFER_VESA_MODE_101
 141         bool "640x480 256-color"
 142
 143 config FRAMEBUFFER_VESA_MODE_102
 144         bool "800x600 16-color"
 145
 146 config FRAMEBUFFER_VESA_MODE_103
 147         bool "800x600 256-color"
 148
 149 config FRAMEBUFFER_VESA_MODE_104
 150         bool "1024x768 16-color"
 151
 152 config FRAMEBUFFER_VESA_MODE_105
 153         bool "1024x768 256-color"
 154
 155 config FRAMEBUFFER_VESA_MODE_106
 156         bool "1280x1024 16-color"
 157
 158 config FRAMEBUFFER_VESA_MODE_107
 159         bool "1280x1024 256-color"
 160
 161 config FRAMEBUFFER_VESA_MODE_108
 162         bool "80x60 text"
 163
 164 config FRAMEBUFFER_VESA_MODE_109
 165         bool "132x25 text"
 166
 167 config FRAMEBUFFER_VESA_MODE_10A
 168         bool "132x43 text"
 169
 170 config FRAMEBUFFER_VESA_MODE_10B
 171         bool "132x50 text"
 172
 173 config FRAMEBUFFER_VESA_MODE_10C
 174         bool "132x60 text"
 175
 176 config FRAMEBUFFER_VESA_MODE_10D
 177         bool "320x200 32k-color (1:5:5:5)"
 178
 179 config FRAMEBUFFER_VESA_MODE_10E
 180         bool "320x200 64k-color (5:6:5)"
 181
 182 config FRAMEBUFFER_VESA_MODE_10F
 183         bool "320x200 16.8M-color (8:8:8)"
 184
 185 config FRAMEBUFFER_VESA_MODE_110
 186         bool "640x480 32k-color (1:5:5:5)"
 187
 188 config FRAMEBUFFER_VESA_MODE_111
 189         bool "640x480 64k-color (5:6:5)"
 190
 191 config FRAMEBUFFER_VESA_MODE_112
 192         bool "640x480 16.8M-color (8:8:8)"
 193
 194 config FRAMEBUFFER_VESA_MODE_113
 195         bool "800x600 32k-color (1:5:5:5)"
 196
 197 config FRAMEBUFFER_VESA_MODE_114
 198         bool "800x600 64k-color (5:6:5)"
 199
 200 config FRAMEBUFFER_VESA_MODE_115
 201         bool "800x600 16.8M-color (8:8:8)"
 202
 203 config FRAMEBUFFER_VESA_MODE_116
 204         bool "1024x768 32k-color (1:5:5:5)"
 205
 206 config FRAMEBUFFER_VESA_MODE_117
 207         bool "1024x768 64k-color (5:6:5)"
 208
 209 config FRAMEBUFFER_VESA_MODE_118
 210         bool "1024x768 16.8M-color (8:8:8)"
 211
 212 config FRAMEBUFFER_VESA_MODE_119
 213         bool "1280x1024 32k-color (1:5:5:5)"
 214
 215 config FRAMEBUFFER_VESA_MODE_11A
 216         bool "1280x1024 64k-color (5:6:5)"
 217
 218 config FRAMEBUFFER_VESA_MODE_11B
 219         bool "1280x1024 16.8M-color (8:8:8)"
 220
 221 config FRAMEBUFFER_VESA_MODE_USER
 222         bool "Manually select VESA mode"
 223
 224 endchoice
 225
 226 # Map the config names to an integer (KB).
 227 config FRAMEBUFFER_VESA_MODE
 228         prompt "VESA mode" if FRAMEBUFFER_VESA_MODE_USER
 229         hex
 230         default 0x100 if FRAMEBUFFER_VESA_MODE_100
 231         default 0x101 if FRAMEBUFFER_VESA_MODE_101
 232         default 0x102 if FRAMEBUFFER_VESA_MODE_102
 233         default 0x103 if FRAMEBUFFER_VESA_MODE_103
 234         default 0x104 if FRAMEBUFFER_VESA_MODE_104
 235         default 0x105 if FRAMEBUFFER_VESA_MODE_105
 236         default 0x106 if FRAMEBUFFER_VESA_MODE_106
 237         default 0x107 if FRAMEBUFFER_VESA_MODE_107
 238         default 0x108 if FRAMEBUFFER_VESA_MODE_108
 239         default 0x109 if FRAMEBUFFER_VESA_MODE_109
 240         default 0x10A if FRAMEBUFFER_VESA_MODE_10A
 241         default 0x10B if FRAMEBUFFER_VESA_MODE_10B
 242         default 0x10C if FRAMEBUFFER_VESA_MODE_10C
 243         default 0x10D if FRAMEBUFFER_VESA_MODE_10D
 244         default 0x10E if FRAMEBUFFER_VESA_MODE_10E
 245         default 0x10F if FRAMEBUFFER_VESA_MODE_10F
 246         default 0x110 if FRAMEBUFFER_VESA_MODE_110
 247         default 0x111 if FRAMEBUFFER_VESA_MODE_111
 248         default 0x112 if FRAMEBUFFER_VESA_MODE_112
 249         default 0x113 if FRAMEBUFFER_VESA_MODE_113
 250         default 0x114 if FRAMEBUFFER_VESA_MODE_114
 251         default 0x115 if FRAMEBUFFER_VESA_MODE_115
 252         default 0x116 if FRAMEBUFFER_VESA_MODE_116
 253         default 0x117 if FRAMEBUFFER_VESA_MODE_117
 254         default 0x118 if FRAMEBUFFER_VESA_MODE_118
 255         default 0x119 if FRAMEBUFFER_VESA_MODE_119
 256         default 0x11A if FRAMEBUFFER_VESA_MODE_11A
 257         default 0x11B if FRAMEBUFFER_VESA_MODE_11B
 258         default 0x117 if FRAMEBUFFER_VESA_MODE_USER
 259
 260 config VIDEO_LCD_ANX9804
 261         bool "ANX9804 bridge chip"
 262         default n
 263         ---help---
 264         Support for the ANX9804 bridge chip, which can take pixel data coming
 265         from a parallel LCD interface and translate it on the fy into a DP
 266         interface for driving eDP TFT displays. It uses I2C for configuration.
 267
 268 config VIDEO_LCD_SSD2828
 269         bool "SSD2828 bridge chip"
 270         default n
 271         ---help---
 272         Support for the SSD2828 bridge chip, which can take pixel data coming
 273         from a parallel LCD interface and translate it on the fly into MIPI DSI
 274         interface for driving a MIPI compatible LCD panel. It uses SPI for
 275         configuration.
 276
 277 config VIDEO_LCD_SSD2828_TX_CLK
 278         int "SSD2828 TX_CLK frequency (in MHz)"
 279         depends on VIDEO_LCD_SSD2828
 280         default 0
 281         ---help---
 282         The frequency of the crystal, which is clocking SSD2828. It may be
 283         anything in the 8MHz-30MHz range and the exact value should be
 284         retrieved from the board schematics. Or in the case of Allwinner
 285         hardware, it can be usually found as 'lcd_xtal_freq' variable in
 286         FEX files. It can be also set to 0 for selecting PCLK from the
 287         parallel LCD interface instead of TX_CLK as the PLL clock source.
 288
 289 config VIDEO_LCD_SSD2828_RESET
 290         string "RESET pin of SSD2828"
 291         depends on VIDEO_LCD_SSD2828
 292         default ""
 293         ---help---
 294         The reset pin of SSD2828 chip. This takes a string in the format
 295         understood by 'name_to_gpio' function, e.g. PH1 for pin 1 of port H.
 296
 297 config VIDEO_LCD_HITACHI_TX18D42VM
 298         bool "Hitachi tx18d42vm LVDS LCD panel support"
 299         depends on VIDEO
 300         default n
 301         ---help---
 302         Support for Hitachi tx18d42vm LVDS LCD panels, these panels have a
 303         lcd controller which needs to be initialized over SPI, once that is
 304         done they work like a regular LVDS panel.
 305
 306 config VIDEO_LCD_SPI_CS
 307         string "SPI CS pin for LCD related config job"
 308         depends on VIDEO_LCD_SSD2828 || VIDEO_LCD_HITACHI_TX18D42VM
 309         default ""
 310         ---help---
 311         This is one of the SPI communication pins, involved in setting up a
 312         working LCD configuration. The exact role of SPI may differ for
 313         different hardware setups. The option takes a string in the format
 314         understood by 'name_to_gpio' function, e.g. PH1 for pin 1 of port H.
 315
 316 config VIDEO_LCD_SPI_SCLK
 317         string "SPI SCLK pin for LCD related config job"
 318         depends on VIDEO_LCD_SSD2828 || VIDEO_LCD_HITACHI_TX18D42VM
 319         default ""
 320         ---help---
 321         This is one of the SPI communication pins, involved in setting up a
 322         working LCD configuration. The exact role of SPI may differ for
 323         different hardware setups. The option takes a string in the format
 324         understood by 'name_to_gpio' function, e.g. PH1 for pin 1 of port H.
 325
 326 config VIDEO_LCD_SPI_MOSI
 327         string "SPI MOSI pin for LCD related config job"
 328         depends on VIDEO_LCD_SSD2828 || VIDEO_LCD_HITACHI_TX18D42VM
 329         default ""
 330         ---help---
 331         This is one of the SPI communication pins, involved in setting up a
 332         working LCD configuration. The exact role of SPI may differ for
 333         different hardware setups. The option takes a string in the format
 334         understood by 'name_to_gpio' function, e.g. PH1 for pin 1 of port H.
 335
 336 config VIDEO_LCD_SPI_MISO
 337         string "SPI MISO pin for LCD related config job (optional)"
 338         depends on VIDEO_LCD_SSD2828
 339         default ""
 340         ---help---
 341         This is one of the SPI communication pins, involved in setting up a
 342         working LCD configuration. The exact role of SPI may differ for
 343         different hardware setups. If wired up, this pin may provide additional
 344         useful functionality. Such as bi-directional communication with the
 345         hardware and LCD panel id retrieval (if the panel can report it). The
 346         option takes a string in the format understood by 'name_to_gpio'
 347         function, e.g. PH1 for pin 1 of port H.
 348
 349 config VIDEO_MVEBU
 350         bool "Armada XP LCD controller"
 351         default n
 352         ---help---
 353         Support for the LCD controller integrated in the Marvell
 354         Armada XP SoC.
 355
 356 config I2C_EDID
 357         bool "Enable EDID library"
 358         depends on DM_I2C
 359         default n
 360         help
 361            This enables library for accessing EDID data from an LCD panel.
 362
 363 config DISPLAY
 364         bool "Enable Display support"
 365         depends on DM
 366         default n
 367         select I2C_EDID
 368         help
 369            This supports drivers that provide a display, such as eDP (Embedded
 370            DisplayPort) and HDMI (High Definition Multimedia Interface).
 371            The devices provide a simple interface to start up the display,
 372            read display information and enable it.
 373
 374 config VIDEO_BROADWELL_IGD
 375         bool "Enable Intel Broadwell integrated graphics device"
 376         depends on X86
 377         help
 378           This enables support for integrated graphics on Intel broadwell
 379           devices. Initialisation is mostly performed by a VGA boot ROM, with
 380           some setup handled by U-Boot itself. The graphics adaptor works as
 381           a VESA device and supports LCD panels, eDP and LVDS outputs.
 382           Configuration of most aspects of device operation is performed using
 383           a special tool which configures the VGA ROM, but the graphics
 384           resolution can be selected in U-Boot.
 385
 386 config VIDEO_IVYBRIDGE_IGD
 387         bool "Enable Intel Ivybridge integration graphics support"
 388         depends on X86
 389         help
 390           This enables support for integrated graphics on Intel ivybridge
 391           devices. Initialisation is mostly performed by a VGA boot ROM, with
 392           some setup handled by U-Boot itself. The graphics adaptor works as
 393           a VESA device and supports LCD panels, eDP and LVDS outputs.
 394           Configuration of most aspects of device operation is performed using
 395           a special tool which configures the VGA ROM, but the graphics
 396           resolution can be selected in U-Boot.
 397
 398 config VIDEO_ROCKCHIP
 399         bool "Enable Rockchip video support"
 400         depends on DM_VIDEO
 401         help
 402            Rockchip SoCs provide video output capabilities for High-Definition
 403            Multimedia Interface (HDMI), Low-voltage Differential Signalling
 404            (LVDS), embedded DisplayPort (eDP) and Display Serial Interface
 405            (DSI). This driver supports the on-chip video output device, and
 406            targets the Rockchip RK3288.
 407
 408 config VIDEO_SANDBOX_SDL
 409         bool "Enable sandbox video console using SDL"
 410         depends on SANDBOX
 411         help
 412           When using sandbox you can enable an emulated LCD display which
 413           appears as an SDL (Simple DirectMedia Layer) window. This is a
 414           console device and can display stdout output. Within U-Boot is is
 415           a normal bitmap display and can display images as well as text.
 416
 417 config VIDEO_TEGRA20
 418         bool "Enable LCD support on Tegra20"
 419         depends on OF_CONTROL
 420         help
 421            Tegra20 supports video output to an attached LCD panel as well as
 422            other options such as HDMI. Only the LCD is supported in U-Boot.
 423            This option enables this support which can be used on devices which
 424            have an LCD display connected.
 425
 426 config VIDEO_TEGRA124
 427         bool "Enable video support on Tegra124"
 428         depends on DM_VIDEO
 429         help
 430            Tegra124 supports many video output options including eDP and
 431            HDMI. At present only eDP is supported by U-Boot. This option
 432            enables this support which can be used on devices which
 433            have an eDP display connected.
 434
 435 source "drivers/video/bridge/Kconfig"
 436
 437 config VIDEO
 438         bool "Enable legacy video support"
 439         depends on !DM_VIDEO
 440         help
 441           Define this for video support, without using driver model. Some
 442           drivers use this because they are not yet converted to driver
 443           model. Video drivers typically provide a colour text console and
 444           cursor.
 445
 446 config CFB_CONSOLE
 447         bool "Enable colour frame buffer console"
 448         depends on VIDEO
 449         default y if VIDEO
 450         help
 451           Enables the colour frame buffer driver. This supports colour
 452           output on a bitmap display from an in-memory frame buffer.
 453           Several colour devices are supported along with various options to
 454           adjust the supported features. The driver is implemented in
 455           cfb_console.c
 456
 457           The following defines are needed (cf. smiLynxEM, i8042)
 458                 VIDEO_FB_LITTLE_ENDIAN  graphic memory organisation
 459                                         (default big endian)
 460                 VIDEO_HW_RECTFILL       graphic chip supports
 461                                         rectangle fill (cf. smiLynxEM)
 462                 VIDEO_HW_BITBLT         graphic chip supports
 463                                         bit-blit (cf. smiLynxEM)
 464                 VIDEO_VISIBLE_COLS      visible pixel columns (cols=pitch)
 465                 VIDEO_VISIBLE_ROWS      visible pixel rows
 466                 VIDEO_PIXEL_SIZE        bytes per pixel
 467                 VIDEO_DATA_FORMAT       graphic data format
 468                                         (0-5, cf. cfb_console.c)
 469                 VIDEO_FB_ADRS           framebuffer address
 470                 VIDEO_KBD_INIT_FCT      keyboard int fct (i.e. rx51_kp_init())
 471                 VIDEO_TSTC_FCT          test char fct (i.e. rx51_kp_tstc)
 472                 VIDEO_GETC_FCT          get char fct (i.e. rx51_kp_getc)
 473                 CONFIG_VIDEO_LOGO       display Linux logo in upper left corner
 474                 CONFIG_VIDEO_BMP_LOGO   use bmp_logo.h instead of linux_logo.h
 475                                         for logo. Requires CONFIG_VIDEO_LOGO
 476                 CONFIG_CONSOLE_EXTRA_INFO
 477                                         additional board info beside
 478                                         the logo
 479                 CONFIG_HIDE_LOGO_VERSION
 480                                         do not display bootloader
 481                                         version string
 482
 483           When CONFIG_CFB_CONSOLE is defined, the video console is the
 484           default console. The serial console can be forced by setting the
 485           environment 'console=serial'.
 486
 487 config CFB_CONSOLE_ANSI
 488         bool "Support ANSI escape sequences"
 489         depends on CFB_CONSOLE
 490         help
 491           This allows the colour buffer frame buffer driver to support
 492           a limited number of ANSI escape sequences (cursor control,
 493           erase functions and limited graphics rendition control). Normal
 494           output from U-Boot will pass through this filter.
 495
 496 config VGA_AS_SINGLE_DEVICE
 497         bool "Set the video as an output-only device"
 498         depends on CFB_CONSOLE
 499         default y
 500         help
 501           If enable the framebuffer device will be initialized as an
 502           output-only device. The Keyboard driver will not be set up. This
 503           may be used if you have no keyboard device, or more than one
 504           (USB Keyboard, AT Keyboard).
 505
 506 config VIDEO_SW_CURSOR
 507         bool "Enable a software cursor"
 508         depends on CFB_CONSOLE
 509         default y if CFB_CONSOLE
 510         help
 511           This draws a cursor after the last character. No blinking is
 512           provided. This makes it possible to see the current cursor
 513           position when entering text on the console. It is recommended to
 514           enable this.
 515
 516 config VIDEO_CT69000
 517         bool "Enable Chips & Technologies 69000 video driver"
 518         depends on VIDEO
 519         help
 520           This enables a frame buffer driver for the Chips & Technologies
 521           ct69000, a fairly old graphics device (circa 2000) which is used
 522           on some hardware. It operates over the ISA bus, and supports
 523           some acceleration features.
 524
 525           For the CT69000 and SMI_LYNXEM drivers, videomode is
 526                 selected via environment 'videomode'. Two different ways
 527                 are possible:
 528                 - "videomode=num"   'num' is a standard LiLo mode numbers.
 529                 Following standard modes are supported  (* is default):
 530
 531                       Colors    640x480 800x600 1024x768 1152x864 1280x1024
 532                 -------------+---------------------------------------------
 533                       8 bits |  0x301*  0x303    0x305    0x161     0x307
 534                      15 bits |  0x310   0x313    0x316    0x162     0x319
 535                      16 bits |  0x311   0x314    0x317    0x163     0x31A
 536                      24 bits |  0x312   0x315    0x318      ?       0x31B
 537                 -------------+---------------------------------------------
 538                 (i.e. setenv videomode 317; saveenv; reset;)
 539
 540                 - "videomode=bootargs" all the video parameters are parsed
 541                 from the bootargs. (See drivers/video/videomodes.c)
 542
 543 config SYS_CONSOLE_BG_COL
 544         hex "Background colour"
 545         depends on CFB_CONSOLE || VIDEO_CT69000
 546         default 0x00
 547         help
 548           Defines the background colour for the console. The value is from
 549           0x00 to 0xff and the meaning depends on the graphics card.
 550           Typically, 0x00 means black and 0xff means white. Do not set
 551           the background and foreground to the same colour or you will see
 552           nothing.
 553
 554 config SYS_CONSOLE_FG_COL
 555         hex "Foreground colour"
 556         depends on CFB_CONSOLE || VIDEO_CT69000
 557         default 0xa0
 558         help
 559           Defines the foreground colour for the console. The value is from
 560           0x00 to 0xff and the meaning depends on the graphics card.
 561           Typically, 0x00 means black and 0xff means white. Do not set
 562           the background and foreground to the same colour or you will see
 563           nothing.
 564
 565 config LCD
 566         bool "Enable legacy LCD support"
 567         help
 568           Define this to enable LCD support (for output to LCD display).
 569           You will also need to select an LCD driver using an additional
 570           CONFIG option. See the README for details. Drives which have been
 571           converted to driver model will instead used CONFIG_DM_VIDEO.
 572
 573 endmenu