AM3352 24bit LCD配置后颜色失真

shan xu2

Other Parts Discussed in Thread: AM3352

我们现在用的是一个24位rgb的lcd，这个是lcd的数据脚定义，使用的24bit：

我们的硬件连接，am335测如下：

lcd的FPC测如下：

软件配置：

static struct da8xx_panel known_lcd_panels[] = {
       [0] = {//使用这项
                .name = "4.3inch_LCD",
                .width = 320,
                .height = 240,
                .hfp = 20,
                .hbp = 20,
                .hsw = 41,
               .vfp = 2,
               .vbp = 2,
                .vsw = 10,
                .pxl_clk = 8000000,
                .invert_pxl_clk = 0,
        },

...

}

static struct pinmux_config lcdc_pin_mux[] = {
   {"lcd_data0.lcd_data0",       OMAP_MUX_MODE0 | AM33XX_PIN_OUTPUT
                               | AM33XX_PULL_DISA},
   {"lcd_data1.lcd_data1",       OMAP_MUX_MODE0 | AM33XX_PIN_OUTPUT
                               | AM33XX_PULL_DISA},
   {"lcd_data2.lcd_data2",       OMAP_MUX_MODE0 | AM33XX_PIN_OUTPUT
                               | AM33XX_PULL_DISA},
   {"lcd_data3.lcd_data3",       OMAP_MUX_MODE0 | AM33XX_PIN_OUTPUT
                               | AM33XX_PULL_DISA},
   {"lcd_data4.lcd_data4",       OMAP_MUX_MODE0 | AM33XX_PIN_OUTPUT
                               | AM33XX_PULL_DISA},
   {"lcd_data5.lcd_data5",       OMAP_MUX_MODE0 | AM33XX_PIN_OUTPUT
                               | AM33XX_PULL_DISA},
   {"lcd_data6.lcd_data6",       OMAP_MUX_MODE0 | AM33XX_PIN_OUTPUT
                               | AM33XX_PULL_DISA},
   {"lcd_data7.lcd_data7",       OMAP_MUX_MODE0 | AM33XX_PIN_OUTPUT
                               | AM33XX_PULL_DISA},
   {"lcd_data8.lcd_data8",       OMAP_MUX_MODE0 | AM33XX_PIN_OUTPUT
                               | AM33XX_PULL_DISA},
   {"lcd_data9.lcd_data9",       OMAP_MUX_MODE0 | AM33XX_PIN_OUTPUT
                               | AM33XX_PULL_DISA},
   {"lcd_data10.lcd_data10",   OMAP_MUX_MODE0 | AM33XX_PIN_OUTPUT
                               | AM33XX_PULL_DISA},
   {"lcd_data11.lcd_data11",   OMAP_MUX_MODE0 | AM33XX_PIN_OUTPUT
                               | AM33XX_PULL_DISA},
   {"lcd_data12.lcd_data12",   OMAP_MUX_MODE0 | AM33XX_PIN_OUTPUT
                               | AM33XX_PULL_DISA},
   {"lcd_data13.lcd_data13",   OMAP_MUX_MODE0 | AM33XX_PIN_OUTPUT
                               | AM33XX_PULL_DISA},
   {"lcd_data14.lcd_data14",   OMAP_MUX_MODE0 | AM33XX_PIN_OUTPUT
                               | AM33XX_PULL_DISA},
   {"lcd_data15.lcd_data15",   OMAP_MUX_MODE0 | AM33XX_PIN_OUTPUT
                               | AM33XX_PULL_DISA},
   {"gpmc_ad15.lcd_data16",   OMAP_MUX_MODE1 | AM33XX_PIN_OUTPUT
                               | AM33XX_PULL_DISA},
   {"gpmc_ad14.lcd_data17",   OMAP_MUX_MODE1 | AM33XX_PIN_OUTPUT
                               | AM33XX_PULL_DISA},
   {"gpmc_ad13.lcd_data18",   OMAP_MUX_MODE1 | AM33XX_PIN_OUTPUT
                               | AM33XX_PULL_DISA},
   {"gpmc_ad12.lcd_data19",   OMAP_MUX_MODE1 | AM33XX_PIN_OUTPUT
                               | AM33XX_PULL_DISA},
   {"gpmc_ad11.lcd_data20",   OMAP_MUX_MODE1 | AM33XX_PIN_OUTPUT
                               | AM33XX_PULL_DISA},
    {"gpmc_ad10.lcd_data21",   OMAP_MUX_MODE1 | AM33XX_PIN_OUTPUT
                               | AM33XX_PULL_DISA},
    {"gpmc_ad9.lcd_data22",   OMAP_MUX_MODE1 | AM33XX_PIN_OUTPUT
                               | AM33XX_PULL_DISA},
    {"gpmc_ad8.lcd_data23",   OMAP_MUX_MODE1 | AM33XX_PIN_OUTPUT
                               | AM33XX_PULL_DISA},
   {"lcd_vsync.lcd_vsync",       OMAP_MUX_MODE0 | AM33XX_PIN_OUTPUT},
   {"lcd_hsync.lcd_hsync",       OMAP_MUX_MODE0 | AM33XX_PIN_OUTPUT},
   {"lcd_pclk.lcd_pclk",       OMAP_MUX_MODE0 | AM33XX_PIN_OUTPUT},
   {"lcd_ac_bias_en.lcd_ac_bias_en", OMAP_MUX_MODE0 | AM33XX_PIN_OUTPUT},
   {NULL, 0},
};

static const struct display_panel disp_panel = {
   WVGA,
   32,
   16,
   COLOR_ACTIVE,
};

static struct lcd_ctrl_config lcd_cfg = {
   &disp_panel,
   .ac_bias       = 255,
   .ac_bias_intrpt       = 0,
   .dma_burst_sz       = 16,
   .bpp           = 24,
   .fdd           = 0x80,
   .tft_alt_mode       = 0,
   .stn_565_mode       = 0,
   .mono_8bit_mode       = 0,
   .invert_line_clock   = 1,
   .invert_frm_clock   = 1,
   .sync_edge       = 0,
   .sync_ctrl       = 1,
   .raster_order       = 0,
};
现在屏幕上没有红色出现，应该是红色的地方显示黄色了，像是r组没生效