In my android-jb4.3 + imx6dl sabresd board, hdmi audio can't be output when conneted with TV using hdmi cable.
I try my best to find out the reason for several days ,but haven't successed.
these are my result after investigation.
1: connect this TV with another board using hdmi cable, this TV can work at 1080p and also i can hear audio sound from it.
2: connect this hdmi TV with our sabresd board, this TV can work at 480P, also in this videomode ,we can hear hdmi sound. but when making it work at >480P (720P or 1080P), the video output is good , but can't hear any sound from TV.
also, the detail timming of 720P and 480P i set are supported by this TV's edid. in other words , every trying, our borad can read the edid information from this TV sucessfully.
so i wonder why at high resolution（720P），hdmi audio can't be outputed ？
on our imx6 platform, we havn't modify the hardware(imx6 sabresd) and software(imx6 android jb4.3) about hdmi. but from android_jb4.3_1.1.0-ga Release_Notes, hdmi audio can be supported.
Many thanks if anybody can help me or give me some suggestions on this problem.