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[211.23.39.77]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-2c433369c8asm148322735ad.73.2026.06.16.19.09.30 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 16 Jun 2026 19:09:32 -0700 (PDT) From: LiangCheng Wang To: Devarsh Thakkar , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Simona Vetter , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Wig Cheng Cc: dri-devel@lists.freedesktop.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Tomi Valkeinen , LiangCheng Wang Subject: Re: [PATCH v3 2/2] drm/tiny: add support for PIXPAPER 4.26 monochrome e-ink panel Date: Wed, 17 Jun 2026 10:09:26 +0800 Message-Id: <20260617020926.114947-1-zaq14760@gmail.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <423c3dca-9589-488d-8462-c3d51f05ee4a@ti.com> References: <20260529-bar-v3-0-5c2ac1c751ee@gmail.com> <20260529-bar-v3-2-5c2ac1c751ee@gmail.com> <2bfb73e6-dca3-4d93-af04-3c644929dd19@ti.com> <20260616083921.4066690-1-zaq14760@gmail.com> <423c3dca-9589-488d-8462-c3d51f05ee4a@ti.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" Hi Devarsh, Thanks, that sounds great -- let's converge on panel-ssd16xx.c. > Yes, I will be adding SSD1677 controller support in V2 of my series, > hopefully that should help and after that it's just a matter of adding > panel entry for your pixpaper panel. I can share you my branch with > ssd1677 support once I have it ready. That would be very helpful, please do share the branch once it's ready. I have the PIXPAPER 4.26 hardware here, so I can validate the SSD1677 support and the panel on real hardware and report back any quirks. > additionally I can quickly add boilerplate pixpaper 4.26 panel entries on > top of my V2 series referring from your patch so that it switches to using > standard ssd16xx commands and ssd1677 quirks wherever necessary and you can > then validate and modify. Thanks for offering. If it's alright with you, I'd like to take the pixpaper-426m panel entry through review myself on top of your series, using your boilerplate as a starting point, since I can carry the validation on real hardware. I'll credit your help with Co-developed-by/Suggested-by as appropriate. Happy to arrange it whichever way is easiest for you. I'll also follow up with the 0xF7/0xFF test result so we can capture the correct SSD1677 update-sequence quirk. Regards, LiangCheng