Re: Rockchip RK3328 Rock64 HDMI

I also have a Rock64 3328, and while I would like to have a working 
HDMI, I can't say that I need it.  I run it headless and use it to test 
smallish ports on aarch64.

If HDMI did work, I would make sure sysutils/desktop-installer works 
smoothly on this unit, in case that motivates anyone.  Given the cost of 
a Pro, though, I'm not sure how many people would even care.

On 9/25/24 10:29, Klaus Küchemann wrote:
> Well, … estimation ...,
> To say it in short:
> While RK3399 HDMI even worked with fbsd-efifb on an old installation on my Rock960(which is the same gpu as the RockPro64) ,
> this will not happen for the RK3328/ Rock64.
> 
> In longer but simple  words :
> Needed 5 minutes to hack u-boot`s current version  to get HDMI - output on the RK3328/ Rock64..
> It works because u-boot(and linux) has built in driver for the hdmi-inno phy.
> So the dts devicetree- entries for the hdmi_phy point to that driver ( which is glued in their drm).
> So u-boot sets up it’s framebuffer based on this driver while it cannot be handed over to FreeBSD
> because it`s not implemented FreeBSD (as Manu said) .
> So from u-boot`s framebuffer(or whatever hdmi-output) the screen turns back to dark black exactly in the moment of the
> handover to fbsd kernel,  no automatically efifb.
>   I don`t assume that a dedicated developer will port/write the necessary hdmi-drivers
> for the outdated RK3328/Rock64 because (e.g in this thread) currently exactly 1 person(not me) is known to need the glass console for that Soc...but you never know….
> 
> 
> 
>> Am 21.09.2024 um 19:36 schrieb Emmanuel Vadot <manu@bidouilliste.com>:
>>
>> On Sat, 21 Sep 2024 15:49:51 +0200
>> Klaus Küchemann <maciphone2@googlemail.com> wrote:
>>
>>> Hi Manu,
>>>
>>> thanks for letting me know. It`s the first time I looked deeper into this issue.
>>> So you mean that adding RK3328 codes to your DRM-subtree is even necessary
>>> to get efifb console output ?
> 
>> No, efifb will automagically works if u-boot setup the display (which
>> it should and did iirc but it's been a while)
>>
>>> The current state of (at least my) Rock64 is a complete HDMI blank screen without any electrical reaction at boot .
>>> Can`t find any specific  Rockchip frame buffer code at first view, so for now I`m a bit confused where to start
>>> to get any HDMI-output.u-boot or firmware or your drm-subtree, or is there a specific Rockchip bug somewhere???
>>
>> As said above for efifb u-boot needs to setup hdmi etc ... If it's not
>> done right now maybe some config is needed.
>> drm-subtree is needed if one wants 2D accel (but needs code), for 3D we
>> will need lima ported as this GPU isn't supported by panfrost iirc.
> 
> 


-- 
Life is a game.  Play hard.  Play fair.  Have fun.