Hello everyone,
I face some problem about HDMI output.
I connected the LVDS to HDMI adapter to J2, but the display always no signal. I already take one day to survey the solution.
I only find a related solution at https://community.nxp.com/t5/i-MX-Processors/HDMI-Output-in-i-MX-8QuadMax/td-p/1087406
Although the kernel version are a little different, I change the fdt_file to the corresponding file, imx8qm-mek.dtb.
It still doesn't work.
At the end, I try to change the plug. I find something weird.
I can get the output from J7/J8 plug, but i can't get the ouput from J2/J3 plug.
Information about setting
Board: i.MX8 QuadMax MEK
Linux Kernel version:Linux -2.2.0+g5ec03d06f54e #1 SMP PREEMPT Thu Sep 24 06:58:12 UTC 2020 aarch64 aarch64 aarch64 GNU/Linux
Uboot version:- U-Boot 2020.04-5.4.47-2.2.0+gffc3fbe7e5
dts:fdt_file=imx8qm-mek.dtb
Is there new change in imx8qmmek 5.4.47 ?
解決済! 解決策の投稿を見る。
I checked that imx8qm doesn't use lvds0_ch1 and lvds1_ch1 when you use single mode, if you use split mode, these two ports can be used
have you tried the other bsp version demo images? do you mean older bsp can support this, but only 5.4.47 couldn't ? do you mind testing other version? let me test it on imx8qm board too
I try the other vision, the situation are the same. It still can't get the output from J2/J3.
Linux imx8qmmek 4.19.35-1.1.0+g0f9917c56d59 #1 SMP PREEMPT Wed Oct 30 13:09:11 UTC 2019 aarch64 aarch64 aarch64 GNU/Linux Linux imx8qmmek 4.14.62-imx_4.14.62_1.0.0_beta+g1907fe4 #1 SMP PREEMPT Tue Oct 16 06:33:37 UTC 2018 aarch64 aarch64 aarch64 GNU/Linux
I checked that imx8qm doesn't use lvds0_ch1 and lvds1_ch1 when you use single mode, if you use split mode, these two ports can be used