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Title: Does rk3328 support hdmi 800x480-60p resolution? [Print This Page]

Author: testki144 Time: 3/3/2020 17:41
Title: Does rk3328 support hdmi 800x480-60p resolution?
I want to use an 800x480p LCD with the hdmi interface of core-rk3328-jd4.

The LCD is odroid-c2 compatible.
In aio-3288j, the value of /sys/class/display/HDMI/modes is 'auto' and the mode value is recognized as '1280x720p-60' but only 800x480 is displayed on the screen.
core-rk3328-jd4 does not recognize it, and nothing appears on the screen.

How can I use this LCD with core-rk3328-jd4?

Author: testki144 Time: 3/12/2020 15:27
Added pixel-rate of 800x480 LCD to 'kernel/driver/phy/rockchip/phy-rockchip-inno-hdmi-phy.c'.
Add '{ 29230000, 29230000, 1, 90, 2, 2, 2, 12, 2, 2, 2, 0, 0},' to the pre_pll_config list, the screen will appear on the 800x400 LCD.

What does each pre_pll_config item (pixclock, tmdsclock, prediv, fbdiv, tmds_div_a, ..., pclk_div_a, ...) mean?
Is the problem caused by incorrect pre_pll_config item values?

Author: Larry_ZHM Time: 8/18/2021 11:09
https://download.csdn.net/download/mialo163/21130511

Author: Larry_ZHM Time: 8/18/2021 11:11
it is my debug record!
https://blog.csdn.net/mialo163/article/details/119640644

Author: Larry_ZHM Time: 8/18/2021 11:22

testki144 Posted at 3/12/2020 15:27
Added pixel-rate of 800x480 LCD to 'kernel/driver/phy/rockchip/phy-rockchip-inno-hdmi-phy.c'.
Add ' ...

Hope to useful

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