i.MX Processors中的主题 HDMI CEC controller functionality support status on i.MX8M Plus

HDMI CEC controller functionality support status on i.MX8M Plus

haiqin — Fri, 16 Jun 2023 04:56:19 GMT

Hi, Team,

I read from below previous ticket that HDMI CEC functionality is not available at that time, and i want to know is there any update on this? Do this functionality work now? BTW I can't find any device tree description for this even in latest y6.1 kernel branch, so if yes, please also advice how to implentment it.

https://community.nxp.com/t5/Other-NXP-Products/HDMI-CEC-in-i-MX8M/m-p/899385

Thanks.

Simon

Re: HDMI CEC controller functionality support status on i.MX8M Plus

jimmychan — Tue, 20 Jun 2023 10:47:21 GMT

Hello,

The cec function is supported.

For example, try cec-ctl in 5.10.72, and can get below:

root@imx8mp-lpddr4-evk:/dev# cec-ctl
Driver Info:
        Driver Name                : dwhdmi-imx
        Adapter Name               : dw_hdmi
        Capabilities               : 0x0000010e
                Logical Addresses
                Transmit
                Passthrough
                Connector Info
        Driver version             : 5.10.72
        Available Logical Addresses: 4
        DRM Connector Info         : card 1, connector 41
        Physical Address           : 1.0.0.0
        Logical Address Mask       : 0x0000
        CEC Version                : 2.0
        OSD Name                   : ''
        Logical Addresses          : 0