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Fri, 18 Sep 2026 09:54:29 -0700 (PDT) Received: from archlinux ([207.90.239.231]) by smtp.gmail.com with ESMTPSA id 98e67ed59e1d1-39e6cb0190bsm240270a91.13.2026.09.18.09.54.22 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 18 Sep 2026 09:54:29 -0700 (PDT) From: Mikhail Kalashnikov To: Chen-Yu Tsai , Jernej Skrabec , Samuel Holland Cc: devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-sunxi@lists.linux.dev, linux-kernel@vger.kernel.org, Andre Przywara Subject: [PATCH 0/4] arm64: dts: allwinner: add Teclast P85T (A523) support Date: Sat, 19 Sep 2026 00:54:10 +0800 Message-ID: <20260918165414.1129076-1-iuncuim@gmail.com> X-Mailer: git-send-email 2.55.0 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260918_095431_351108_34AC836E X-CRM114-Status: GOOD ( 13.16 ) 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 This series adds initial support for the Teclast P85T, an 8-inch tablet based on the Allwinner A523 (sun55i) SoC. This initial submission enables only what mainline supports today. Display (DE/TCON/DSI), PWM backlight, audio codec, camera (CSI/VIN) and LRADC keys are deliberately left out, as those blocks are not supported in mainline yet. They will be sent separately. Patches 1 and 2 overlap with Andre's series https://lore.kernel.org/linux-sunxi/20260914210115.28151-1-andre.przywara@arm.com/T/#ma8a2554315eccbccdb15ee7ac212a4d0afb45a5c They are included for compatibility and differ only in the full company name in the description. Touchscreen operation requires firmware extraction from the Android firmware kernel module; the file will be added to a public repository later. The values below were obtained experimentally via evtest: touchscreen-size-x = <1786>; touchscreen-size-y = <1128>; With the values below the touchscreen and display coordinates match: touchscreen-inverted-y; touchscreen-swapped-x-y; U-Boot support requires an LPDDR3 driver for the A523, which will be sent a bit later. A ready-to-use image with working display, audio and touchscreen can be found on the Manjaro forum. Patches will be added as other contributors add their parts. Based on 7.3-rc3. Mikhail Kalashnikov (4): dt-bindings: vendor-prefixes: Add vendor prefix for Teclast dt-bindings: arm: sunxi: Add Teclast P85T tablet arm64: dts: allwinner: sun55i-a523: add I2C0 and I2C1 pin groups arm64: dts: allwinner: add Teclast P85T tablet .../devicetree/bindings/arm/sunxi.yaml | 5 + .../devicetree/bindings/vendor-prefixes.yaml | 2 + arch/arm64/boot/dts/allwinner/Makefile | 1 + .../allwinner/sun55i-a523-teclast-p85t.dts | 420 ++++++++++++++++++ .../arm64/boot/dts/allwinner/sun55i-a523.dtsi | 18 + 5 files changed, 446 insertions(+) create mode 100644 arch/arm64/boot/dts/allwinner/sun55i-a523-teclast-p85t.dts -- 2.55.0