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ok335xD 如何将屏幕显示转90度在linux下,竖屏变横屏。

ok335xD 开发板,在linux下,如何调整屏幕的旋转,让屏幕转90度,就是说原来是800*480的显示现在要480*800的显示。有谁做过这方面的,给我讲讲吧,谢谢!


再补充一下,我的意思是原来是横屏显示,现在把它变成竖屏显示,该改驱动的那些地方呢?谢谢了