How do I rotate the frame buffer during boot?

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Dave McLaughlin

Sep 1, 2020, 9:05:49 PM9/1/20
to android-porting
I have an LCD that is in portrait mode and the timing is configured for this mode so during the initial boot, everything is in portrait mode and the LCD is being used in landscape mode.

How can I rotate the LCD during the initial boot? I've checked in u-boot and the kernel and the options to enable FB rotation are not enabled so putting fbcon=rotate:1 on the command line does nothing.

Is there any other way to rotate the LCD so that both the boot logo and the boot animation are correct and then Android starts in Landscape mode at power up?

Devendra Devadiga

Mar 12, 2021, 10:43:33 AM3/12/21
to android-porting
In your try to add this line:
For Portrait mode:

For Landscape mode:

For Reverse-Portrait mode:

For Reverse Landscape mode:

If you got any better solution otherthan this please share to me.

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