1config VIDEO_X86 2 bool "Enable x86 video driver support" 3 depends on X86 4 default n 5 help 6 Turn on this option to enable a very simple driver which uses vesa 7 to discover the video mode and then provides a frame buffer for use 8 by U-Boot. 9 10config VIDEO_LCD_SSD2828 11 bool "SSD2828 bridge chip" 12 default n 13 ---help--- 14 Support for the SSD2828 bridge chip, which can take pixel data coming 15 from a parallel LCD interface and translate it on the fly into MIPI DSI 16 interface for driving a MIPI compatible LCD panel. It uses SPI for 17 configuration. 18 19config VIDEO_LCD_SSD2828_TX_CLK 20 int "SSD2828 TX_CLK frequency (in MHz)" 21 depends on VIDEO_LCD_SSD2828 22 default 0 23 ---help--- 24 The frequency of the crystal, which is clocking SSD2828. It may be 25 anything in the 8MHz-30MHz range and the exact value should be 26 retrieved from the board schematics. Or in the case of Allwinner 27 hardware, it can be usually found as 'lcd_xtal_freq' variable in 28 FEX files. It can be also set to 0 for selecting PCLK from the 29 parallel LCD interface instead of TX_CLK as the PLL clock source. 30 31config VIDEO_LCD_SSD2828_RESET 32 string "RESET pin of SSD2828" 33 depends on VIDEO_LCD_SSD2828 34 default "" 35 ---help--- 36 The reset pin of SSD2828 chip. This takes a string in the format 37 understood by 'name_to_gpio' function, e.g. PH1 for pin 1 of port H. 38 39config VIDEO_LCD_SPI_CS 40 string "SPI CS pin for LCD related config job" 41 depends on VIDEO_LCD_SSD2828 42 default "" 43 ---help--- 44 This is one of the SPI communication pins, involved in setting up a 45 working LCD configuration. The exact role of SPI may differ for 46 different hardware setups. The option takes a string in the format 47 understood by 'name_to_gpio' function, e.g. PH1 for pin 1 of port H. 48 49config VIDEO_LCD_SPI_SCLK 50 string "SPI SCLK pin for LCD related config job" 51 depends on VIDEO_LCD_SSD2828 52 default "" 53 ---help--- 54 This is one of the SPI communication pins, involved in setting up a 55 working LCD configuration. The exact role of SPI may differ for 56 different hardware setups. The option takes a string in the format 57 understood by 'name_to_gpio' function, e.g. PH1 for pin 1 of port H. 58 59config VIDEO_LCD_SPI_MOSI 60 string "SPI MOSI pin for LCD related config job" 61 depends on VIDEO_LCD_SSD2828 62 default "" 63 ---help--- 64 This is one of the SPI communication pins, involved in setting up a 65 working LCD configuration. The exact role of SPI may differ for 66 different hardware setups. The option takes a string in the format 67 understood by 'name_to_gpio' function, e.g. PH1 for pin 1 of port H. 68 69config VIDEO_LCD_SPI_MISO 70 string "SPI MISO pin for LCD related config job (optional)" 71 depends on VIDEO_LCD_SSD2828 72 default "" 73 ---help--- 74 This is one of the SPI communication pins, involved in setting up a 75 working LCD configuration. The exact role of SPI may differ for 76 different hardware setups. If wired up, this pin may provide additional 77 useful functionality. Such as bi-directional communication with the 78 hardware and LCD panel id retrieval (if the panel can report it). The 79 option takes a string in the format understood by 'name_to_gpio' 80 function, e.g. PH1 for pin 1 of port H. 81