1# 2# Video configuration 3# 4 5menu "Graphics support" 6 7config 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 17config 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 27config 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 37config 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 47config 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 57config 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 70config 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 79config 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 92source "drivers/video/fonts/Kconfig" 93 94config 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 104config 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 113config 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 122config 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 129choice 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 137config FRAMEBUFFER_VESA_MODE_100 138 bool "640x400 256-color" 139 140config FRAMEBUFFER_VESA_MODE_101 141 bool "640x480 256-color" 142 143config FRAMEBUFFER_VESA_MODE_102 144 bool "800x600 16-color" 145 146config FRAMEBUFFER_VESA_MODE_103 147 bool "800x600 256-color" 148 149config FRAMEBUFFER_VESA_MODE_104 150 bool "1024x768 16-color" 151 152config FRAMEBUFFER_VESA_MODE_105 153 bool "1024x768 256-color" 154 155config FRAMEBUFFER_VESA_MODE_106 156 bool "1280x1024 16-color" 157 158config FRAMEBUFFER_VESA_MODE_107 159 bool "1280x1024 256-color" 160 161config FRAMEBUFFER_VESA_MODE_108 162 bool "80x60 text" 163 164config FRAMEBUFFER_VESA_MODE_109 165 bool "132x25 text" 166 167config FRAMEBUFFER_VESA_MODE_10A 168 bool "132x43 text" 169 170config FRAMEBUFFER_VESA_MODE_10B 171 bool "132x50 text" 172 173config FRAMEBUFFER_VESA_MODE_10C 174 bool "132x60 text" 175 176config FRAMEBUFFER_VESA_MODE_10D 177 bool "320x200 32k-color (1:5:5:5)" 178 179config FRAMEBUFFER_VESA_MODE_10E 180 bool "320x200 64k-color (5:6:5)" 181 182config FRAMEBUFFER_VESA_MODE_10F 183 bool "320x200 16.8M-color (8:8:8)" 184 185config FRAMEBUFFER_VESA_MODE_110 186 bool "640x480 32k-color (1:5:5:5)" 187 188config FRAMEBUFFER_VESA_MODE_111 189 bool "640x480 64k-color (5:6:5)" 190 191config FRAMEBUFFER_VESA_MODE_112 192 bool "640x480 16.8M-color (8:8:8)" 193 194config FRAMEBUFFER_VESA_MODE_113 195 bool "800x600 32k-color (1:5:5:5)" 196 197config FRAMEBUFFER_VESA_MODE_114 198 bool "800x600 64k-color (5:6:5)" 199 200config FRAMEBUFFER_VESA_MODE_115 201 bool "800x600 16.8M-color (8:8:8)" 202 203config FRAMEBUFFER_VESA_MODE_116 204 bool "1024x768 32k-color (1:5:5:5)" 205 206config FRAMEBUFFER_VESA_MODE_117 207 bool "1024x768 64k-color (5:6:5)" 208 209config FRAMEBUFFER_VESA_MODE_118 210 bool "1024x768 16.8M-color (8:8:8)" 211 212config FRAMEBUFFER_VESA_MODE_119 213 bool "1280x1024 32k-color (1:5:5:5)" 214 215config FRAMEBUFFER_VESA_MODE_11A 216 bool "1280x1024 64k-color (5:6:5)" 217 218config FRAMEBUFFER_VESA_MODE_11B 219 bool "1280x1024 16.8M-color (8:8:8)" 220 221config FRAMEBUFFER_VESA_MODE_USER 222 bool "Manually select VESA mode" 223 224endchoice 225 226# Map the config names to an integer (KB). 227config 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 260config 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 268config 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 277config 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 289config 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 297config 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 306config 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 316config 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 326config 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 336config 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 349config 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 356config 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 363config 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 374config ATMEL_HLCD 375 bool "Enable ATMEL video support using HLCDC" 376 depends on DM_VIDEO 377 help 378 HLCDC supports video output to an attached LCD panel. 379 380config VIDEO_BROADWELL_IGD 381 bool "Enable Intel Broadwell integrated graphics device" 382 depends on X86 383 help 384 This enables support for integrated graphics on Intel broadwell 385 devices. Initialisation is mostly performed by a VGA boot ROM, with 386 some setup handled by U-Boot itself. The graphics adaptor works as 387 a VESA device and supports LCD panels, eDP and LVDS outputs. 388 Configuration of most aspects of device operation is performed using 389 a special tool which configures the VGA ROM, but the graphics 390 resolution can be selected in U-Boot. 391 392config VIDEO_IVYBRIDGE_IGD 393 bool "Enable Intel Ivybridge integration graphics support" 394 depends on X86 395 help 396 This enables support for integrated graphics on Intel ivybridge 397 devices. Initialisation is mostly performed by a VGA boot ROM, with 398 some setup handled by U-Boot itself. The graphics adaptor works as 399 a VESA device and supports LCD panels, eDP and LVDS outputs. 400 Configuration of most aspects of device operation is performed using 401 a special tool which configures the VGA ROM, but the graphics 402 resolution can be selected in U-Boot. 403 404config VIDEO_FSL_DCU_FB 405 bool "Enable Freescale Display Control Unit" 406 depends on VIDEO 407 help 408 This enables support for Freescale Display Control Unit (DCU4) 409 module found on Freescale Vybrid and QorIQ family of SoCs. 410 411config VIDEO_FSL_DCU_MAX_FB_SIZE_MB 412 int "Freescale DCU framebuffer size" 413 depends on VIDEO_FSL_DCU_FB 414 default 4194304 415 help 416 Set maximum framebuffer size to be used for Freescale Display 417 Controller Unit (DCU4). 418 419config VIDEO_ROCKCHIP 420 bool "Enable Rockchip video support" 421 depends on DM_VIDEO 422 help 423 Rockchip SoCs provide video output capabilities for High-Definition 424 Multimedia Interface (HDMI), Low-voltage Differential Signalling 425 (LVDS), embedded DisplayPort (eDP) and Display Serial Interface 426 (DSI). This driver supports the on-chip video output device, and 427 targets the Rockchip RK3288. 428 429config VIDEO_SANDBOX_SDL 430 bool "Enable sandbox video console using SDL" 431 depends on SANDBOX 432 help 433 When using sandbox you can enable an emulated LCD display which 434 appears as an SDL (Simple DirectMedia Layer) window. This is a 435 console device and can display stdout output. Within U-Boot is is 436 a normal bitmap display and can display images as well as text. 437 438config VIDEO_TEGRA20 439 bool "Enable LCD support on Tegra20" 440 depends on OF_CONTROL 441 help 442 Tegra20 supports video output to an attached LCD panel as well as 443 other options such as HDMI. Only the LCD is supported in U-Boot. 444 This option enables this support which can be used on devices which 445 have an LCD display connected. 446 447config VIDEO_TEGRA124 448 bool "Enable video support on Tegra124" 449 depends on DM_VIDEO 450 help 451 Tegra124 supports many video output options including eDP and 452 HDMI. At present only eDP is supported by U-Boot. This option 453 enables this support which can be used on devices which 454 have an eDP display connected. 455 456source "drivers/video/bridge/Kconfig" 457 458config VIDEO 459 bool "Enable legacy video support" 460 depends on !DM_VIDEO 461 help 462 Define this for video support, without using driver model. Some 463 drivers use this because they are not yet converted to driver 464 model. Video drivers typically provide a colour text console and 465 cursor. 466 467config VIDEO_IPUV3 468 bool "i.MX IPUv3 Core video support" 469 depends on VIDEO && MX6 470 help 471 This enables framebuffer driver for i.MX processors working 472 on the IPUv3(Image Processing Unit) internal graphic processor. 473 474config CFB_CONSOLE 475 bool "Enable colour frame buffer console" 476 depends on VIDEO 477 default y if VIDEO 478 help 479 Enables the colour frame buffer driver. This supports colour 480 output on a bitmap display from an in-memory frame buffer. 481 Several colour devices are supported along with various options to 482 adjust the supported features. The driver is implemented in 483 cfb_console.c 484 485 The following defines are needed (cf. smiLynxEM, i8042) 486 VIDEO_FB_LITTLE_ENDIAN graphic memory organisation 487 (default big endian) 488 VIDEO_HW_RECTFILL graphic chip supports 489 rectangle fill (cf. smiLynxEM) 490 VIDEO_HW_BITBLT graphic chip supports 491 bit-blit (cf. smiLynxEM) 492 VIDEO_VISIBLE_COLS visible pixel columns (cols=pitch) 493 VIDEO_VISIBLE_ROWS visible pixel rows 494 VIDEO_PIXEL_SIZE bytes per pixel 495 VIDEO_DATA_FORMAT graphic data format 496 (0-5, cf. cfb_console.c) 497 VIDEO_FB_ADRS framebuffer address 498 VIDEO_KBD_INIT_FCT keyboard int fct (i.e. rx51_kp_init()) 499 VIDEO_TSTC_FCT test char fct (i.e. rx51_kp_tstc) 500 VIDEO_GETC_FCT get char fct (i.e. rx51_kp_getc) 501 CONFIG_VIDEO_LOGO display Linux logo in upper left corner 502 CONFIG_VIDEO_BMP_LOGO use bmp_logo.h instead of linux_logo.h 503 for logo. Requires CONFIG_VIDEO_LOGO 504 CONFIG_CONSOLE_EXTRA_INFO 505 additional board info beside 506 the logo 507 CONFIG_HIDE_LOGO_VERSION 508 do not display bootloader 509 version string 510 511 When CONFIG_CFB_CONSOLE is defined, the video console is the 512 default console. The serial console can be forced by setting the 513 environment 'console=serial'. 514 515config CFB_CONSOLE_ANSI 516 bool "Support ANSI escape sequences" 517 depends on CFB_CONSOLE 518 help 519 This allows the colour buffer frame buffer driver to support 520 a limited number of ANSI escape sequences (cursor control, 521 erase functions and limited graphics rendition control). Normal 522 output from U-Boot will pass through this filter. 523 524config VGA_AS_SINGLE_DEVICE 525 bool "Set the video as an output-only device" 526 depends on CFB_CONSOLE 527 default y 528 help 529 If enable the framebuffer device will be initialized as an 530 output-only device. The Keyboard driver will not be set up. This 531 may be used if you have no keyboard device, or more than one 532 (USB Keyboard, AT Keyboard). 533 534config VIDEO_SW_CURSOR 535 bool "Enable a software cursor" 536 depends on CFB_CONSOLE 537 default y if CFB_CONSOLE 538 help 539 This draws a cursor after the last character. No blinking is 540 provided. This makes it possible to see the current cursor 541 position when entering text on the console. It is recommended to 542 enable this. 543 544config CONSOLE_EXTRA_INFO 545 bool "Display additional board information" 546 depends on CFB_CONSOLE 547 help 548 Display additional board information strings that normally go to 549 the serial port. When this option is enabled, a board-specific 550 function video_get_info_str() is called to get the string for 551 each line of the display. The function should return the string, 552 which can be empty if there is nothing to display for that line. 553 554config CONSOLE_SCROLL_LINES 555 int "Number of lines to scroll the console by" 556 depends on CFB_CONSOLE || DM_VIDEO || LCD 557 default 1 558 help 559 When the console need to be scrolled, this is the number of 560 lines to scroll by. It defaults to 1. Increasing this makes the 561 console jump but can help speed up operation when scrolling 562 is slow. 563 564config VIDEO_CT69000 565 bool "Enable Chips & Technologies 69000 video driver" 566 depends on VIDEO 567 help 568 This enables a frame buffer driver for the Chips & Technologies 569 ct69000, a fairly old graphics device (circa 2000) which is used 570 on some hardware. It operates over the ISA bus, and supports 571 some acceleration features. 572 573 For the CT69000 and SMI_LYNXEM drivers, videomode is 574 selected via environment 'videomode'. Two different ways 575 are possible: 576 - "videomode=num" 'num' is a standard LiLo mode numbers. 577 Following standard modes are supported (* is default): 578 579 Colors 640x480 800x600 1024x768 1152x864 1280x1024 580 -------------+--------------------------------------------- 581 8 bits | 0x301* 0x303 0x305 0x161 0x307 582 15 bits | 0x310 0x313 0x316 0x162 0x319 583 16 bits | 0x311 0x314 0x317 0x163 0x31A 584 24 bits | 0x312 0x315 0x318 ? 0x31B 585 -------------+--------------------------------------------- 586 (i.e. setenv videomode 317; saveenv; reset;) 587 588 - "videomode=bootargs" all the video parameters are parsed 589 from the bootargs. (See drivers/video/videomodes.c) 590 591config SYS_CONSOLE_BG_COL 592 hex "Background colour" 593 depends on CFB_CONSOLE || VIDEO_CT69000 594 default 0x00 595 help 596 Defines the background colour for the console. The value is from 597 0x00 to 0xff and the meaning depends on the graphics card. 598 Typically, 0x00 means black and 0xff means white. Do not set 599 the background and foreground to the same colour or you will see 600 nothing. 601 602config SYS_CONSOLE_FG_COL 603 hex "Foreground colour" 604 depends on CFB_CONSOLE || VIDEO_CT69000 605 default 0xa0 606 help 607 Defines the foreground colour for the console. The value is from 608 0x00 to 0xff and the meaning depends on the graphics card. 609 Typically, 0x00 means black and 0xff means white. Do not set 610 the background and foreground to the same colour or you will see 611 nothing. 612 613config LCD 614 bool "Enable legacy LCD support" 615 help 616 Define this to enable LCD support (for output to LCD display). 617 You will also need to select an LCD driver using an additional 618 CONFIG option. See the README for details. Drives which have been 619 converted to driver model will instead used CONFIG_DM_VIDEO. 620 621endmenu 622