From nobody Sun Jun 14 14:30:19 2026 Received: from mail-24418.protonmail.ch (mail-24418.protonmail.ch [109.224.244.18]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id F3BA1356A0D for ; Fri, 3 Apr 2026 07:25:42 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=109.224.244.18 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1775201147; cv=none; b=D/KiPxXMHdujLmmFeYLiYek5lOgE8taMepml2jz/eAfpNiA7VOB4K0rt59qaBGCZeaH7Q801JLmhxSkPf4kvi0cuK/jMh47597i0Ua5/bI4gUpbxIDnFAnDtCy5FIktUzKMOdVi1MKs6pgSz3AIPSz9PL4n1X/noGUUo6184qJI= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1775201147; c=relaxed/simple; bh=neyVNCqfeY5aAbMqkc6Hoj+noHvEzztoGcjYBB2EZ0I=; h=Date:To:From:Cc:Subject:Message-ID:MIME-Version:Content-Type; b=qj+/Txvbg3uu/tVK2lM1iJrwQ9s6X/4TJ+M45pM8shBCOz9wZCsBZ9v1eNp5Oc7ZWSchHr2bfATLEmuqTCMrwFEmSo2nTDIZ/G2m5znsjDusmcUia1OYSOzRW6jzv7QcRI/rSeTCII1ZTsx0wQdc+HWLhuzs36KEVyrQRrLHK+w= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=proton.me; spf=pass smtp.mailfrom=proton.me; dkim=pass (2048-bit key) header.d=proton.me header.i=@proton.me header.b=HFHWonGp; arc=none smtp.client-ip=109.224.244.18 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=proton.me Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=proton.me Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=proton.me header.i=@proton.me header.b="HFHWonGp" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=proton.me; s=protonmail; t=1775201139; x=1775460339; bh=5pCTJfDYr/r1hxWMxjtsdEhq89JT5cAfvqasjnMXAVQ=; h=Date:To:From:Cc:Subject:Message-ID:Feedback-ID:From:To:Cc:Date: Subject:Reply-To:Feedback-ID:Message-ID:BIMI-Selector; b=HFHWonGpk9aE8W+tG0jj7FT5gRxUI96AMoxWku5LuYlA4y8ck0kEzGzEZ4DXRseQP krLDNeRJOE7LSYPbWZEHj7c6u4ht6vl3c0FslsHAwqwwy5j1W53p76r0Vx2ORjf+y9 P+4MvDHnRGC6uiCWN/tuXGz+HPrlBOsbtYECiEfxK9e9O/Gtp0crxSB5x37C5jktYv gNftONlJt12wd0tuPmjswECZgxuLgTB8NhV6ZwrFeQWhns2S/kyciGJwCa6OgT4+H9 qvtaKfknhnLUfsVpxrbUyf3b0/no4llk5p+K4h99hF62spJxYQpRVYJixXNTiFjj6V 7H/ZJhIYfDO+A== Date: Fri, 03 Apr 2026 07:25:35 +0000 To: heiko@sntech.de From: Clemens Malten Cc: robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-rockchip@lists.infradead.org, linux-kernel@vger.kernel.org, Clemens Malten Subject: [PATCH] arm64: dts: rockchip: odroid-m2: Enable DisplayPort Alt Mode over USB-C Message-ID: <20260403072408.44926-1-c.malten@proton.me> Feedback-ID: 133261535:user:proton X-Pm-Message-ID: 6e10c726fc4a3142f19f64eaf5dae528a9ac80d9 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Enable USB-C DisplayPort Alt Mode on the ODROID-M2 board (RK3588S) by adding the necessary DTS changes: - Enable dp0 controller (dw-dp driver) - Add VOP2 video pipeline endpoints: vp2 -> dp0 -> usbdp_phy0 - Fix try-power-role from 'source' to 'sink' to allow the board to receive power and trigger correct PD negotiation - Add altmodes block to the USB-C connector with DP SVID (0xff01) and VDO. Note: svid must be declared as a 16-bit value (/bits/ 16) as required by the typec class driver (fwnode_property_read_u16) Tested on ODROID-M2 (RK3588S) with a UGreen CM654 USB-C DP adapter under mainline Linux 6.19-rc. This patch depends on Andy Yan's RK3588 DisplayPort Controller series: Link: https://lore.kernel.org/all/20250822063959.692098-1-andyshrk@163.com/ Signed-off-by: Clemens Malten --- .../boot/dts/rockchip/rk3588s-odroid-m2.dts | 29 ++++++++++++++++++- 1 file changed, 28 insertions(+), 1 deletion(-) diff --git a/arch/arm64/boot/dts/rockchip/rk3588s-odroid-m2.dts b/arch/arm6= 4/boot/dts/rockchip/rk3588s-odroid-m2.dts index a72063c55..dbc62f032 100644 --- a/arch/arm64/boot/dts/rockchip/rk3588s-odroid-m2.dts +++ b/arch/arm64/boot/dts/rockchip/rk3588s-odroid-m2.dts @@ -352,7 +352,17 @@ connector { power-role =3D "dual"; sink-pdos =3D ; source-pdos =3D ; - try-power-role =3D "source"; + try-power-role =3D "sink"; + + altmodes { + #address-cells =3D <1>; + #size-cells =3D <0>; + altmode@0 { + reg =3D <0>; + svid =3D /bits/ 16 <0xff01>; + vdo =3D <0xffffffff>; + }; + }; =20 ports { #address-cells =3D <1>; @@ -952,3 +962,20 @@ vp0_out_hdmi0: endpoint@ROCKCHIP_VOP2_EP_HDMI0 { remote-endpoint =3D <&hdmi0_in_vp0>; }; }; + +&dp0 { + status =3D "okay"; +}; + +&dp0_in { + dp0_in_vp2: endpoint { + remote-endpoint =3D <&vp2_out_dp0>; + }; +}; + +&vp2 { + vp2_out_dp0: endpoint@a { + reg =3D ; + remote-endpoint =3D <&dp0_in_vp2>; + }; +}; --=20 2.53.0