2407693_en-US

[#1]

7 inch DSI LCD ( 800*480 ) integration with imx8M plus

Hello Team,

I am attempting to bring up a Waveshare 7-inch DSI LCD on a custom iMX8M Plus board (Kernel 6.18.20_2.0.0).

The I2C bus detects the panel board, and touch functionality works via evtest. CONFIG_DRM_WAVESHARE_BRIDGE=y binds successfully. However, the display remains blank.

Adjusting pixel clock frequencies has not resolved the issue. I have attached the DTS snippet and the kernel logs for reference.

Display Details:

https://www.waveshare.com/wiki/7inch_DSI_LCD?srsltid=AfmBOorUskdbY2AqupblCpMEQNVBolOXs40ytjhcxKml0IZ...

Any further troubleshooting steps appreciated.

Thanks in advance

Graphics & Displayi.MX 8 Family | i.MX 8QuadMax (8QM) | 8QuadPlusRe: 7 inch DSI LCD ( 800*480 ) integration with imx8M plus

it seems the LCD need 5V 500mA. Not sure the custom iMX8M Plus board can provide enough or not...

Re: 7 inch DSI LCD ( 800*480 ) integration with imx8M plus

Hii, 

You can see the attached log below

Re: 7 inch DSI LCD ( 800*480 ) integration with imx8M plus

Hi,

Please share the clocks with below command.

cat /sys/kernel/debug/clk/clk_summary 

Best Regards,
Zhiming