linux-kernel - Re: [PATCH v6 00/14] Add eDP support for RK3588

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Message-Id: <D7RH63Z1VBBD.1AIOQJIWPZIXS@cknow.org>
Date: Thu, 13 Feb 2025 17:56:55 +0100
From: "Diederik de Haas" <didi.debian@...ow.org>
To: "Piotr Oniszczuk" <piotr.oniszczuk@...il.com>, "Damon Ding"
 <damon.ding@...k-chips.com>
Cc: <heiko@...ech.de>, <robh@...nel.org>, <conor+dt@...nel.org>,
 <algea.cao@...k-chips.com>, <rfoss@...nel.org>,
 <devicetree@...r.kernel.org>, <linux-phy@...ts.infradead.org>,
 <linux-rockchip@...ts.infradead.org>, <linux-kernel@...r.kernel.org>,
 <sebastian.reichel@...labora.com>, <dri-devel@...ts.freedesktop.org>,
 <hjc@...k-chips.com>, <kever.yang@...k-chips.com>,
 <dmitry.baryshkov@...aro.org>, <vkoul@...nel.org>,
 <andy.yan@...k-chips.com>, <krzk+dt@...nel.org>,
 <linux-arm-kernel@...ts.infradead.org>, <l.stach@...gutronix.de>
Subject: Re: [PATCH v6 00/14] Add eDP support for RK3588

On Thu Feb 13, 2025 at 3:54 PM CET, Piotr Oniszczuk wrote:
>
>
>> Wiadomość napisana przez Damon Ding <damon.ding@...k-chips.com> w dniu 23 sty 2025, o godz. 11:07:
>> 
>> Picked from:
>> https://patchwork.kernel.org/project/linux-rockchip/list/?series=923593
>> 
>> These patchs have been tested with a 1536x2048p60 eDP panel on
>> RK3588S EVB1 board, and HDMI 1080P/4K display also has been verified
>> on RK3588 EVB1 board. Furthermore, the eDP display has been rechecked
>> on RK3399 sapphire excavator board.
>> ...
>> 9 files changed, 401 insertions(+), 89 deletions(-)
>> 
>> -- 
>> 2.34.1
>> 
>
> Damon,
>
> I’m playing with hdmi0 port enablement on radxa rock5 itx board with 6.14 mainline.
>
> rock5 itx has 2 hdmi ports: hdmi0 is wired to rk3588 typeC1/eDP1 eDP with ra620 eDP->HDMI converter and hdmi1 from hdmi/edp tx1
> (see page3 & page29 at https://dl.radxa.com/rock5/5itx/v1110/radxa_rock_5itx_v1110_schematic.pdf)
>
> I’m on 6.14-rc2 with applied: 
> [1] Cristicc hdmi code (https://gitlab.collabora.com/cristicc/linux-next/-/commits/rk3588-hdmi-bridge)
> [2] eDP support for RK3588 (https://patchwork.kernel.org/project/linux-rockchip/list/?series=927765)
> [3] Add eDP mode support for Rockchip Samsung HDPTX PHY (https://patchwork.kernel.org/project/linux-rockchip/cover/20250205105157.580060-1-damon.ding@rock-chips.com/)
>
> Is edp1 supported by yours [2] series?
>
> If yes - may you pls hint me about required dts additions in https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/tree/arch/arm64/boot/dts/rockchip/rk3588-rock-5-itx.dts?h=v6.14-rc2 ?

I don't know if it's relevant, but while HDMI0 got enabled for quite a
few devices in 6.13, it did NOT get enabled for Rock 5 ITX.
I made a local patch (which does the same thing as was done for Rock 5B)
but I have no idea if it actually works (I don't have the board).

Maybe you need that for eDP to work?

Cheers,
  Diederik


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