Radxa Zero and FreeBSD : happy marriage ?

ZioMario

ZioMario

Hello.

I'm intrigued by this soc :

Radxa Zero​

  • Specifications:
    • CPU: Amlogic S905Y2 quad-core Cortex-A53
    • RAM: Up to 4GB LPDDR4 (4GB option available)
    • Ports:
      • Mini HDMI
      • Micro USB OTG
      • Micro USB power
    • Wireless: Wi-Fi 802.11 b/g/n/ac, Bluetooth 5.0
Click to expand...

About this soc I like the performances and the slenderness. I want to know how much it is compatible with FreeBSD. Are there some huge unfixed bugs ? Problems with HDMI or whatever ? thanks.
 
---> I do not expect HDMI to work on RK3566. It is disabled in the DTB.

this is a problem,from my (unexperienced) point of view,because I see that Waveshare and Elecrow are selling a lot of USB powered + HDMI displays that are driver less. To don't be able to use one of these screens is problematic because FreeBSD doesnt offer a lot of drivers to turn on a display. Right ? What other alternatives are there if we don't have a working driver for the display ?
 
ZioMario said:
because FreeBSD doesnt offer a lot of drivers to turn on a display. Right ?
Click to expand...
HDMI requires a clock I believe.
"Unresolved linked clock" means u-boot/dtb is trying to pass through a clock and FreeBSD does not know what do with it.

Code: 
clknode_link_recalc: Attempt to use unresolved linked clock: hdmi_phy
Cannot get frequency for clk: hdmi_phy, error: 9
clknode_link_recalc: Attempt to use unresolved linked clock: hdmi_phy
Cannot get frequency for clk: hdmi_phy, error: 9
clknode_link_recalc: Attempt to use unresolved linked clock: hdmi_phy
Cannot get frequency for clk: hdmi_phy, error: 9
clknode_link_recalc: Attempt to use unresolved linked clock: hdmi_phy
Cannot get frequency for clk: hdmi_phy, error: 9
clknode_link_recalc: Attempt to use unresolved linked clock: hdmi_phy
Cannot get frequency for clk: hdmi_phy, error: 9

So HDMI requires u-boot generate the clock structure, DTB pass that along to OS and it initializes device.

ZioMario said:
What other alternatives are there if we don't have a working driver for the display ?
Click to expand...
Serial Console or learn to code.
 
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