Part Number: AM5718
Tool/software: Linux
Hi everybody
we have got an issue regarding HDMI with a new board mounting AM5718,
when displaying on a Toshiba HD TV (mod. 40L1334DG).
What happens is that screen blanks out after approximately 40s,
signal and clock are present (oscilloscope verified) and in fact
by pressing on remote controller "refresh button" the image appears
again but disappears after the same time.
We have rt-kernel v. 4.9.45 and for compatibility reasons with
user-space apps, we use omapfb but if we compile the kernel with omapdrm
support, the test succeeds, i.e. image does not disappear. So it
seems clear that this behaviour is related to omapfb, I am studying
the differences between omapfb and omapdrm regarding HDMI management
but I have not found a solution so far.
What am I missing out ? what can be checked ?
thank you very much
regards
Carlo
