屏參設定

基於 amlogic 學習

Android 解析度調整 屏大小調整

meson_refb01_defconfig：該檔案是進行編譯的選擇，有無包含該編譯

board-8726-refbxx.c 表示該板的板級資源

board-8726-refbxx.h表示該板的板級資源的標頭檔

 

核心涉及解析度的檔案有

board-8726-refbxx.c        .lcd_max_width = 1024,

                                                      .lcd_max_height = 768,   //屏解析度1024 * 768

 

board-8726-refbxx.h    #define OSD_PANEL_PIX                   (1024*768)

 

驅動檔案kernel\drivers\amlogic\display\vout 

#define LCD_WIDTH       1024

#define LCD_HEIGHT      768

 

 

Make menuconfig

     Devicesdriver --->

           Amlogic driver à

                                     Amlogicdisplay driver--à

                                                        Amlogicosd module-à

                                                                                            (1024) Default OSD1 width                                                                                          

                                            (768) Default OSD1 height                                                                                          

                                           (1024) Default OSD1 virtual width                                                                                

                                           (1536) Default OSD1 virtual height 

 

 

Android 層：

Devices /amlogic/b01ref/set_display_mode.sh(android層的解析度設定) panel裝置

 

u-boot

aboard/amlogic /board_xxx/lcd.c 可以直接拷貝 kernel中的 display driver-lcd 驅動