Our development board is NXP s32v platform, and the output video signal is RGB signal. The official demo board referred to before can output normally through sii902x to HDMI. Our own development board will replace sii902x chip with Ti ds90ub921 and use it with ds90ub926? Do you need to develop a special driver configuration register when these two chips are used together? Or as long as the input RGB signal is normal, the default power on value of these two chips can work normally? At present, the problem is that the 926 screen is not lit when the two chips are not configured?
Our framebuff configuration is as follows:
&dcu0 {
display = <&display>;
status = "okay";
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_dcu>;
display: display@0 {
bits-per-pixel = <32>;
display-timings {
native-mode = <&timing0>;
timing0: hdmi-wxga {
clock-frequency = <75000000>;
hactive = <1280>;
vactive = <720>;
vback-porch = <20>;
vfront-porch = <5>;
hback-porch = <220>;
hfront-porch = <110>;
hsync-len = <37>;
vsync-len = <14>;
};
};
};
};
