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How to setting uboot parameter for HDMI output?

Question asked by Felix Hsu on May 3, 2018
Latest reply on May 16, 2018 by Victor Yu

Hi All


Platform: i.MX8M-EVK

SW: Linux version 4.9.51-imx_4.9.51_imx8m_ga+g6df7474


An error occurred when adding the HDMI output parameter to the kernel parameter as follows. 

uboot command line:

setenv mmcargs 'setenv bootargs ${bootargs} root=${mmcroot} rootwait rw video=HDMI-A-1:dev=hdmi,1920x1080@59.94,if=RGB24'


error message:

[    1.474509] [drm] parse error at position 30 in video mode 'dev=hdmi,1920x1080@59.94,if=RGB24'


How can I fixed it?