Bring up LVDS display in Android 14 for IMX8MPlus custo board

[abhiroopnray]

Hi,

We are using a cutom IMX8MPLUS board and upgrading from #Android 13 to Android 1

We are using a specific display and I have the drivers. For Android 13, the customization in dts worked fine and the display was working. But same customization fro Android 14 is not working. 

The backlight is coming but it is coming like a white stripe. I have added the configurations following the datasheet same as in Android 13.

Can you tell me if there is any specific changes in ANdroid 14 from Android 13 for the LVDS display? Which specific file do I need to check for #Android 14

Thanks,

Abhiroop Nandi Ray 

[subash_p]

Hello @Bio_TICFSL ,

I encountered an issue where the LVDS display works correctly in Android 13 but fails to operate in Android 14, despite using the same DTS file for both versions.

[abhiroopnray]

Hi @subash_p ,

I have got the solution.

In Android 14, below lines need to be added in panel-simple.c file under drivers:

.bus_flags = DRM_BUS_FLAG_DE_HIGH,

Thanks,

Abhiroop Nandi Ray

[subash_p]

Hi @abhiroopnray,

This line was already added in my panel-simple.c file, I will mention the code below.


static const struct panel_desc rocktech_rk101ii01d_ct = {
.modes = &rocktech_rk101ii01d_ct_mode,
.bpc = 8,
.num_modes = 1,
.size = {
.width = 217,
.height = 136,
},
.delay = {
.prepare = 50,
.disable = 50,
},
.bus_flags = DRM_BUS_FLAG_DE_HIGH,
.bus_format = MEDIA_BUS_FMT_RGB888_1X7X4_SPWG,
.connector_type = DRM_MODE_CONNECTOR_LVDS,
};

Note : I'm using the rocktech,rk101ii01d-ct as compatible for my LVDS pannel

Thanks,
Subash Parthiban

[Bio_TICFSL]

Hello,

If you change the dts in android 14 then it should works please create a case in our database.

Regards