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RGB LCD does not display

ZLiu.3
Associate II

My rgb lcd screen does not display。

My board is based on the STM32MP153AAA3 design, using a separate power supply.

This is my schematic diagram

0693W00000aIdJqQAK.pngThis is the timing of the LCD

0693W00000aIdKZQA0.png This is the LCD device tree

0693W00000aIdK0QAK.png0693W00000aIdK1QAK.png 

​This is some panel-simple driver code

0693W00000aIdKPQA0.pngHere are some boot logs

0693W00000aIdJnQAK.png0693W00000aIdKUQA0.png 

Looking forward to your response!

1 ACCEPTED SOLUTION

Accepted Solutions
ZLiu.3
Associate II

i have solved it.

The ltdc node has a problem:

&ltdc {
    pinctrl-names = "default", "sleep";
    status = "okay";
    pinctrl-0 = <&ltdc_pins_b>;
    pinctrl-1 = <&ltdc_pins_sleep_b>;
    port {
        #address-cells = <1>;
        #size-cells = <0>;
 
        ltdc_ep0_out: endpoint@0 {
            reg = <0>;
            remote-endpoint = <&rgb_8_panel_in>;
        };
    };
};

View solution in original post

1 REPLY 1
ZLiu.3
Associate II

i have solved it.

The ltdc node has a problem:

&ltdc {
    pinctrl-names = "default", "sleep";
    status = "okay";
    pinctrl-0 = <&ltdc_pins_b>;
    pinctrl-1 = <&ltdc_pins_sleep_b>;
    port {
        #address-cells = <1>;
        #size-cells = <0>;
 
        ltdc_ep0_out: endpoint@0 {
            reg = <0>;
            remote-endpoint = <&rgb_8_panel_in>;
        };
    };
};