Hi guy,
I am having a problem to bring up my custom board which I am trying to upgrade kernel version from 4.1.15 to 5.4.3.
I was porting my uboot lvds driver to enable lvd pwer enable and reset pin, but in kernel 5.4.3, I think uboot uses device tree(CONFIG_OF_SEPARATE), so I think my driver codes in board/mycustom.c doesn't work.
in uboot of Kernel 5.4.3, Where should i check in uboot coces, It actually hard to find where exact code locates in.
And, how to modify uboot gpio setting in kernel 5.4.3?
: error codes
gpio@209c000: dir_output: error: gpio GPIO1_30 not reserved
gpio@20a4000: dir_output: error: gpio GPIO3_30 not reserved
Hi Yibeom
for uboot modifications one can look at Porting Guide included in
Linux 5.4.3_1.0.0 Documentation
Also may be recommended to check uboot version, for L5.4.3
should be version imx_v2019.04_5.4.3_2.0.0
Try to rebuild all images from scratch
Best regards
igor
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