AM335x驱动日立3.5寸屏(TX09D200VM0BAA)屏幕无任何显示,测量各个波形发现场频的下降沿和行频的上升沿是对齐的,
而3.5寸屏的规格书时序图里要求场频的下降沿和行频的下降沿对齐,但是在设备树里没找到改这个的参数。Linux 3.14
下面是设备树里LCD部分配置参数,下面各个参数都改了一下场频的下降沿还是喝行频的上升沿对齐,这个需要更改哪个参数?
panel {
compatible = "ti,tilcdc,panel";
status = "okay";
panel-info {
ac-bias = <255>;
ac-bias-intrpt = <0>;
dma-burst-sz = <16>;
bpp = <32>;
fdd = <0x80>;
sync-edge = <0>;
sync-ctrl = <1>;
raster-order = <0>;
fifo-th = <0>;
};
display-timings {
240x320p60 {
clock-frequency = <30000000>;
hactive = <240>;
vactive = <320>;
hfront-porch = <16>;
hback-porch = <48>;
hsync-len = <16>;
vback-porch = <6>;
vfront-porch = <6>;
vsync-len = <6>;
hsync-active = <1>;
vsync-active = <1>;
};
};
日立3.5寸屏时序参数
日立3.5寸屏 场频行频关系
实际测量的场频行频关系,黄色是场频,蓝色的是行频,
user1396693:
回复 Shine:
我看了你推荐的这两个帖子,跟我的问题一样,我参考这两个帖子解决,多谢