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[89.66.237.154]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-abf508f2288sm890766b.2.2025.02.28.12.30.44 (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Fri, 28 Feb 2025 12:30:46 -0800 (PST) Content-Type: text/plain; charset=utf-8 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 (Mac OS X Mail 16.0 \(3826.400.131.1.6\)) Subject: Re: [PATCH 0/6] Add support for RK3588 DisplayPort Controller From: Piotr Oniszczuk In-Reply-To: <20250223113036.74252-1-andyshrk@163.com> Date: Fri, 28 Feb 2025 21:30:33 +0100 Cc: heiko@sntech.de, neil.armstrong@linaro.org, sebastian.reichel@collabora.com, devicetree@vger.kernel.org, hjc@rock-chips.com, mripard@kernel.org, linux-kernel@vger.kernel.org, linux-rockchip@lists.infradead.org, yubing.zhang@rock-chips.com, dri-devel@lists.freedesktop.org, Andy Yan , krzk+dt@kernel.org, robh@kernel.org, linux-arm-kernel@lists.infradead.org Content-Transfer-Encoding: quoted-printable Message-Id: References: <20250223113036.74252-1-andyshrk@163.com> To: Andy Yan X-Mailer: Apple Mail (2.3826.400.131.1.6) > Wiadomo=C5=9B=C4=87 napisana przez Andy Yan w dniu = 23 lut 2025, o godz. 12:30: >=20 > From: Andy Yan >=20 >=20 > There are two DW DPTX based DisplayPort Controller on rk3588 which > are compliant with the DisplayPort Specification Version 1.4 with > the following features: >=20 > * DisplayPort 1.4a > * Main Link: 1/2/4 lanes > * Main Link Support 1.62Gbps, 2.7Gbps, 5.4Gbps and 8.1Gbps > * AUX channel 1Mbps > * Single Stream Transport(SST) > * Multistream Transport (MST) > *=EF=81=AEType-C support (alternate mode) > * HDCP 2.2, HDCP 1.3 > * Supports up to 8/10 bits per color component > * Supports RBG, YCbCr4:4:4, YCbCr4:2:2, YCbCr4:2:0 > * Pixel clock up to 594MHz > * I2S, SPDIF audio interface >=20 > The current version of this patch series only supports basic display = outputs. > I conducted tests in 1080p and 4K@60 YCbCr4:2:0 modes; the ALT/Type-C = mode > hasn't been tested yet, but I suspect it will likely work. HDCP and = audio > features remain unimplemented. For RK3588, it's only support SST, = while in > the upcoming RK3576, it can support MST output. >=20 Andy, Is tis series enough to get usbc1/dp1 working as video output ? (assuming i will add necessary code in dt)=20 rock5-itx has second hdmi port using usbc1/dp1 lanes 2,3 to ra620 = dp->hdmi converter is it worth to play with this or it is too early? =20