Problems with imx7d overlay setting rgb565 mode?

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Problems with imx7d overlay setting rgb565 mode?

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Contributor II

Hello everyone
On imx7d, I successfully enabled the overlay layer, and my screen resolution is 720x1280. And when bits-per-pixel = <32>, everything looks good except for screen jitter. Later I set bits-per-pixel = <16> and found that there is a problem with the display. When bits-per-pixel = 16, it is equal to the RGB565 mode. Through calculation, the size of / dev / fb0 should be 720 * 1280 * 2 = 1843200. 16bit) Write to / dev / fb0, the screen can be displayed normally. But when I write the same picture to / dev / fb1, the screen displays an error. If I write a 720 * 1280 * 32bit image content to / dev / fb1, the screen can be displayed normally. Is that why?

Phenomenon refer to the picture below

1.png2.png3.png

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NXP TechSupport
NXP TechSupport

Hi 其东 刘 

one can try to narrow down problem running simple pxp unit test :

pxp_test.c\pxp_lib_test\test - imx-test - i.MX Driver Test Application Software 

Best regards
igor
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