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标题: rk3288 reload lcd调试时显示图片被压缩到一半 [打印本页]

作者: hank.lv 时间: 2016-9-20 14:54
标题: rk3288 reload lcd调试时显示图片被压缩到一半
LCD的配置如下：
/ {
   /* about mipi */
disp_mipi_init: mipi_dsi_init{
compatible = "rockchip,mipi_dsi_init";
rockchip,screen_init = <1>;
rockchip,dsi_lane = <4>;
rockchip,dsi_hs_clk = <170>; //1000
rockchip,mipi_dsi_num = <1>;
};
disp_mipi_power_ctr: mipi_power_ctr {

compatible = "rockchip,mipi_power_ctr";

mipi_lcd_rst:mipi_lcd_rst{
compatible = "rockchip,lcd_rst";
rockchip,gpios = <&gpio8 GPIO_A6 GPIO_ACTIVE_HIGH>;
rockchip,delay = <10>;
};
      };

/......初始化代码省略了，太多了....../
disp_timings: display-timings {
                     native-mode = <&timing0>;
                     compatible = "rockchip,display-timings";
                     timing0: timing0 {
screen-type = <SCREEN_MIPI>;
lvds-format = <LVDS_8BIT_2>;
out-face = <OUT_P888>;
clock-frequency = <15000000>; //120000000
hactive = <720>; //720
vactive = <1280>;//1280
hsync-len = <33>; //33
hback-porch = <100>;  //100
hfront-porch = <100>;  //100

vsync-len = <2>;//2
vback-porch = <30>;//30
vfront-porch = <20>;//20

hsync-active = <0>;
vsync-active = <0>;
de-active = <0>;
pixelclk-active = <0>;
swap-rb = <0>;
swap-rg = <0>;
swap-gb = <0>;
                     };
            };

因为使用飞线，所以rockchip,dsi_hs_clk = <170>; 频率较低。clock-frequency = <15000000>; 频率也很低（远低于IC手册上的要求）。背光和LCD电源都是单独供了电，没有配置。
显示的图片：

。 IC手册对bit rate的要求为

请问hg有哪位知道，频率配置的这么低会导到图片中的现象吗？或有没调试时碰到过类似的现象的给点意见，谢谢！

作者: hank.lv 时间: 2016-9-20 14:57
图片好像没传上来，补传下。

para.png (20.35 KB, 下载次数: 2)

show.png (250.13 KB, 下载次数: 2)

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