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mx.zohomail.com; dkim=pass header.i=collabora.com; spf=pass smtp.mailfrom=sebastian.reichel@collabora.com; dmarc=pass header.from= DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; t=1768341068; s=zohomail; d=collabora.com; i=sebastian.reichel@collabora.com; h=Date:Date:From:From:To:To:Cc:Cc:Subject:Subject:Message-ID:References:MIME-Version:Content-Type:In-Reply-To:Message-Id:Reply-To; bh=heegUveatk2FpyHQ31XUitCgPY/ocICvnXz0evnN0z8=; b=I9yflFUopnplEbat3IiZQBY6XElfB2SRCO17LiuXAxGU4BVJPPbVMuI8ZINawU/+ 09N2cIZ/NaTDyPEXe1qfxdVkrwGp+DZE13tQ4TVrgEuFJsE6NzM42v6TY2x2SCGVen0 hHlA8nB8HY+S3+Te3sIia2SGANa378t4vuzQcRqg= Received: by mx.zohomail.com with SMTPS id 1768341066743252.35542973473719; Tue, 13 Jan 2026 13:51:06 -0800 (PST) Received: by venus (Postfix, from userid 1000) id 73B08181010; Tue, 13 Jan 2026 22:51:01 +0100 (CET) Date: Tue, 13 Jan 2026 22:51:01 +0100 From: Sebastian Reichel To: Andy Yan Cc: heiko@sntech.de, dmitry.baryshkov@oss.qualcomm.com, krzk+dt@kernel.org, conor+dt@kernel.org, cristian.ciocaltea@collabora.com, Laurent.pinchart@ideasonboard.com, mripard@kernel.org, hjc@rock-chips.com, robh@kernel.org, tzimmermann@suse.de, devicetree@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-rockchip@lists.infradead.org, Andy Yan Subject: Re: [PATCH 0/5] Add DisplayPort support for rk3576 Message-ID: References: <20260109080054.228671-1-andyshrk@163.com> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="sxsfpgjjlrmslem4" Content-Disposition: inline In-Reply-To: <20260109080054.228671-1-andyshrk@163.com> X-Zoho-Virus-Status: 1 X-Zoho-Virus-Status: 1 X-Zoho-AV-Stamp: zmail-av-1.5.1/268.322.40 X-ZohoMailClient: External X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260113_135124_739051_5022044E X-CRM114-Status: GOOD ( 19.50 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org --sxsfpgjjlrmslem4 Content-Type: text/plain; protected-headers=v1; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable Subject: Re: [PATCH 0/5] Add DisplayPort support for rk3576 MIME-Version: 1.0 Hi, On Fri, Jan 09, 2026 at 04:00:43PM +0800, Andy Yan wrote: > From: Andy Yan >=20 > The DisplayPort found on RK3576 is very similar to that of RK3588, > but work in qual pixel mode and support for MST. >=20 > This patch series aims to add basic display output, not include > audio and MST, which will be the work for the next stage. >=20 > Only test with 2 lane standard DP port output now. This is a nice minimal series :) I got it working to some degree on the RK3576 Sige5 USB-C port. The display connection detection is _very_ unstable, but that part is handled by the TypeC Port Manager and unrelated to the DP controller (and already an issue on the RK3588 based Rock 5B). IF the display is detected (i.e. USB-C side worked properly), the DP controller managed to do proper output too. Thus I believe this should be merged. I plan to look into the TCPM issues in the meantime. Greetings, -- Sebastian >=20 >=20 >=20 > Andy Yan (5): > dt-bindings: display: rockchip: Add rk3576 DisplayPort > drm/bridge: synopsys: dw-dp: Set pixel mode by platform data > drm/bridge: synopsys: dw-dp: Make i2s/spdif clk optional > drm/rockchip: dw_dp: Add DisplayPort support for rk3576 > arm64: dts: rockchip: Add DisplayPort dt node for rk3576 >=20 > .../display/rockchip/rockchip,dw-dp.yaml | 29 +++++++++++++++++-- > arch/arm64/boot/dts/rockchip/rk3576.dtsi | 28 ++++++++++++++++++ > drivers/gpu/drm/bridge/synopsys/dw-dp.c | 12 ++------ > drivers/gpu/drm/rockchip/dw_dp-rockchip.c | 27 ++++++++++++++--- > include/drm/bridge/dw_dp.h | 7 +++++ > 5 files changed, 87 insertions(+), 16 deletions(-) >=20 > --=20 > 2.43.0 >=20 > base-commit: ad939ed1f8108513e84e93da90ad7ea31b56ef87 > branch: rk3576-dp-upstream >=20 --sxsfpgjjlrmslem4 Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEE72YNB0Y/i3JqeVQT2O7X88g7+poFAmlmvkUACgkQ2O7X88g7 +pogQBAAiQs3GMGXt4uSrClyoS6K1bPQFhQWs5HMwFaVulpxY9ATYTZxWL1mnUlv XpZAWMePAC50xxM/6tw/i/+ex9ZVTI35M/YDq9VchJcwrecVvr0ML/6bDEjeW1Tu Dut/y1LUYYxZ6baB8oMqLldUQ18NGUs1aXx2QabDOc6cyXcDTmimbZmiud1voK7U OwpIZUucbbOA4ERPp3GvjVdBM2GTEAtmPASWuua+2Wui4hcdVZEsZvNNWE80kRXe QIfosZxdDvuIoQWCQRVQu3ltFJlCY/+gPycUznUUPpVcZrIkyAUB3MVRiGFgfxX5 ZF/gHLPB2PYwDhKCaVW+oEH863gCPLZA5h/YxfW7/rjJ7Cm//o0RPg2lJH92gcEL CRYAfH3wqhKwrEMPihRDexvHBruhIjoQ7UQC0zMWzhiQ8C7kL1LqP7rifdRt3uao 8P/peQt+2q2HC8VhBwmcXt0CEE5G4ve2HnrzXCfZ2+1F1xzN8fT58PD+kB4u43bK R8bqyNQHeyc33bWPkX9RkgDjqrKoIXj7DSPelUZa6rVZVXFcVU6Mw7fmvSEk4xsv hQr8zEAEMxnS1b6aJjbt8Q2TOLUgwQVMk03JcuudDcOWmTgwY9ioNgUDbyI23mpG eRMKG3sTl28EN44zrz+1Iopy5+2jI4RX5aumQ84pipfyQgSZtPw= =EEJM -----END PGP SIGNATURE----- --sxsfpgjjlrmslem4--