how set imx6 HDMI force output ,don't need hdmi ddc(i2c) comunication?

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how set imx6 HDMI force output ,don't need hdmi ddc(i2c) comunication?

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昌清黄
Contributor I

hardware :   imx6q    (HDMI)->      DS90UB949       (fpd-link) ->   DS90UB9490     (mipi-csi)->    imx6D

we set uboot cmdline:

setenv bootcmd boota mmc2
setenv bootargs console=ttymxc0,115200 androidboot.console=ttymxc0 consoleblank=0 vmalloc=256M init=/init video=mxcfb0:dev=hdmi,1920x1080M@60,bpp=32 video=mxcfb1:off video=mxcfb2:off video=mxcfb3:off androidboot.hardware=freescale cma=384M androidboot.selinux=disabled androidboot.dm_verity=disabled

saveenv

but when system  boot,  hmdi no display.

HDMI output  need ddc(i2c) comunication

so how set imx6 HDMI force output ,don't need hdmi ddc(i2c) comunication?

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igorpadykov
NXP Employee
NXP Employee

Hi

please refer to Chapter 15 On-Chip High-Definition Multimedia Interface (HDMI)

attached Linux Manual and remove (comment) all ddc(i2c) references.

Best regards
igor
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1,046 Views
昌清黄
Contributor I
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