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Received: from AM7PR04MB7046.eurprd04.prod.outlook.com (2603:10a6:20b:113::22) by VI1PR04MB9955.eurprd04.prod.outlook.com (2603:10a6:800:1e1::18) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.9228.12; Thu, 16 Oct 2025 02:27:49 +0000 Received: from AM7PR04MB7046.eurprd04.prod.outlook.com ([fe80::4609:64af:8a4b:fd64]) by AM7PR04MB7046.eurprd04.prod.outlook.com ([fe80::4609:64af:8a4b:fd64%6]) with mapi id 15.20.9228.012; Thu, 16 Oct 2025 02:27:48 +0000 Message-ID: Date: Thu, 16 Oct 2025 10:28:08 +0800 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 03/39] dt-bindings: display: imx: Document i.MX95 Display Controller processing units To: Marek Vasut , Frank Li Cc: dri-devel@lists.freedesktop.org, Abel Vesa , Conor Dooley , Fabio Estevam , Krzysztof Kozlowski , Laurent Pinchart , Lucas Stach , Peng Fan , Pengutronix Kernel Team , Rob Herring , Shawn Guo , Thomas Zimmermann , devicetree@vger.kernel.org, imx@lists.linux.dev, linux-arm-kernel@lists.infradead.org, linux-clk@vger.kernel.org References: <20251011170213.128907-1-marek.vasut@mailbox.org> <20251011170213.128907-4-marek.vasut@mailbox.org> <260b4db1-c02a-48a0-baf8-5e217c729824@mailbox.org> From: Liu Ying Content-Language: en-US In-Reply-To: Content-Type: text/plain; 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Hence no address. >> >> i.MX95 DC hasn't got TCON so it should not be documented for i.MX95 DC. > > What DT node do I attach the pixel-mapper/pixel-interleaver to then ? It's Dither unit which sits in the last position of an i.MX95 DC display stream. BTW, i.MX8qxp/qm DCs haven't got any Dither unit. The existing i.MX8qxp DC DT bindings have already documented all units within i.MX8qxp DC(I hope I didn't miss any unit). And TCON is the last one for i.MX8qxp/qm DC display stream. Have you got i.MX95 DC IP spec? If no, then it would be difficult for you to write DT bindings for all i.MX95 DC units. Note that this is something necessary to do. And, a bit more information about display pipelines in i.MX95 display domain: Dither -> pixel interleaver -> pixel link loopback -> camera domain -> pixel link -> MIPI DSI controller -> pixel mapper(LDB) Note that NXP downstream kernel wrongly adds pixel link between pixel interleaver and pixel mapper due to ambiguous i.MX95 TRM. -- Regards, Liu Ying