Modify hdmi_core.c

mflorezm · December 23, 2017, 4:56pm

Hi everyboady:

Does any body know how to add support for a 800x480 HDMI lcd to BPI-M2U? why Raspberry pi3 support this LCD and BPI not? do you think is a matter of kernel? (3.10 is very old compared with 4.4 from raspberry). Or do you think that Is a metter of timming?

i found this links on lemaker forum for BPI-pi on PI-pro where people was building for special hdmi LCD http://forum.lemaker.org/forum.php?mod=viewthread&tid=14427&extra=&page=1 http://forum.lemaker.org/forum.php?mod=viewthread&tid=15430&fromuid=33332

gist.github.com

https://gist.github.com/martenjacobs/340f6daa02d47264b3a9

How to add a HDMI resolution to the sunxi kernel

To add resolution to sunxi kernel:

1. Get a Debian VM

2. Install toolchain: 
    # apt-get curl git
    # echo "deb http://emdebian.org/tools/debian/ jessie" main > /etc/apt/sources.list.d/crosstools.list
    # curl http://emdebian.org/tools/debian/emdebian-toolchain-archive.key | sudo apt-key add -
    # dpkg --add-architecture armhf
    # apt-get update

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The LCD web site is https://www.waveshare.com/product/mini-pc/raspberry-pi/displays/5inch-hdmi-lcd-b.htm, there they said that this HDMI LCd is supported by lemaker, on Banana Pi / Banana Pro that comes with Lubuntu, Raspbian images

On that web site, they said that for For other mini-PCs, driver is required and should be developed by users. So, does any body know how to buil this deriver?

Any ideas, thanks.

Mauricio F.