android 5.1 hdmi cec interrupts issue

yenchao — Wed, 26 Apr 2017 03:48:56 GMT

Hi All,

I'm working on android 5.1(kernel 3.14.52) with imx6dl.

We found that sometimes the amount of hdmi cec event we measured is inconsistent with the amount of irq 147.

(cat /proc/interrupts | grep hdmi_cec)

Does anyone know why?

Anyadvice and suggestions will be greatly appricated

Thx

Yen

Re: android 5.1 hdmi cec interrupts issue

Bio_TICFSL — Thu, 04 May 2017 16:17:36 GMT

Hi Yen,

According to MX6 Reference manual table 3-1:

However RM need some comments to be added, interrupt 147 is used for both HDMI and CEC. HDMI master interrupt request is correct interrupter for both HDMI video and CEC, when the interrupt trigger, CEC driver will check the CEC states register.

Interrupt 148 is used only for CEC wake-up.

Hope this helps,

Regards

topic android 5.1 hdmi cec interrupts issue in i.MX Processors

android 5.1 hdmi cec interrupts issue

Re: android 5.1 hdmi cec interrupts issue