From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=100.103.45.18 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1794312044; b=fo64E26BNTKj35tbXmb6+NDS2vFqRR+oONdY63nMSUWi7nmTK1vfD9/HhxKhTcleGk12 qaOyq/tWlff3KFStrDeQwYX3KB+LpTf6oGAIxpn8rvPPmELIOOcY+cOI/702UhNstvuL4 U2n9GS/R79liaaaPKxrOYgEKugfNr7YF5JzbKwIePoRxRpM+OwEp8jT1rz8KHbn2NZSpN n4JCRl+XnSyjkAMbEvZdRC/pOvS7KWYOsnds4tgPErgeVEq9HZ3S7VSwE3UoNArgZUVWR p5UxzIfLcNMiIdNiXLNLVAGix3J1AIPCyvkL9lw/YlZDTq5F5Y459/g7u64GJDkVg/g== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1794312044; h=Received:DKIM-Signature:Date:From:To:Cc:Subject:Message-ID: References:MIME-Version:Content-Type:Content-Disposition:In-Reply-To; bh=zUUByBFtkt/Jci7QtZBEH6HXtzxT/EGP+IqF1P78chE=; b=flQtdII/nyY66cQeWiWfZrMOLwKuxkpPvopG67Vh6QI1ZiVgRtsfF7ftYbgrG+mcndcl Gv1VWN3yu4LrIRv4ME8ohv4QSmY18N9wRqPlhfO0jFeEf/wcTcl0UkoqhGGUtoepXhbj9 I12Lt7gXH2neWZOVMwusGCzwDvqhYQh8k0RrHHOaT+btDV8VMdUvDEHdCd6P6CuZNGHsh NxLAuM6yB/8hmQQZ1rC1dpsnssEHtjEmD0G8vbeFl2QfJMtztHwihicHd6gbEvvInFzSg vS++6b6qs2S++aI/op7IlOl3ARam974DVuCjEPCTyMlGX2QDXTI1tZNddSw1N8x9G4g== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=X16lf80J; arc=none smtp.remote-ip=100.103.45.18 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 8052F606A325; Tue, 10 Nov 2026 12:00:44 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=X16lf80J Received: by smtp.kernel.org (Postfix) with ESMTPSA id 2C8291F0089F; Tue, 10 Nov 2026 12:00:42 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1794312044; bh=zUUByBFtkt/Jci7QtZBEH6HXtzxT/EGP+IqF1P78chE=; h=Date:From:To:Cc:Subject:References:In-Reply-To; b=X16lf80J1m+1AsWIYir0Vl7RvVpSQ+oJ9AkM5SwanRE5YGB74h2/wXyTcc2m0NmKM MHCuUmySy6FJ+PVUuW/ighENEGvCQdMsmEccv8w7rQdg32dULc6QIFz45WXEMCcqAS /mWu817g0VKcvN+7IM9oOIcdKy8x1Ls+z2PHPZni1XN5X7UkZQmA5CQ5DctuqcpcNY +Cm/AmiB/FEwoRA8Bl69mYRTCAwlEexYkMGb6fGT3MLtQo6l++9hQVSKAObQ5TMFh1 Km2SYdSM8KPsWzCDVOMjNUHcGTKV/mydxrOAO63HhiUGfFtZGsXYuiZHrWKxiATZ70 yNVJ2y322F+ZQ== Date: Tue, 10 Nov 2026 13:00:39 +0100 From: Krzysztof Kozlowski To: Romain TISSERAND Cc: Igor Reznichenko , Neil Armstrong , Jessica Zhang , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Simona Vetter , Rob Herring , Krzysztof Kozlowski , Conor Dooley , dri-devel@lists.freedesktop.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, sashiko-reviews@lists.linux.dev Subject: Re: [PATCH v2 1/3] dt-bindings: display: panel: ilitek,ili9488: make the port optional Message-ID: <20261110-comical-adder-from-saturn-8c8fbb@quoll> References: <20261109160706.2272332-1-romain.tisserand@gmail.com> <20261109160706.2272332-2-romain.tisserand@gmail.com> X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <20261109160706.2272332-2-romain.tisserand@gmail.com> On Mon, Nov 09, 2026 at 05:07:04PM +0100, Romain TISSERAND wrote: > The panel is a MIPI-DSI peripheral, a child node of its DSI host, and the > driver does not use a graph port. A port is only needed when the host > links its panel through the graph; other DSI hosts, such as the Allwinner > sun6i-a31-mipi-dsi one, link the child node and have no output port to > point at. The PinePhone panel is described that way on the same host, > without a port. > > Keep the port allowed (panel-common) but no longer required, as for other > DSI panels such as ilitek,ili9881c. ilitek,ili7807s and a few others have the same and it is confusing. The port should be required when this is connected over SPI or I2C, but not for MIPI DSI. I think that for MIPI DSI port is meaningless so actually incorrect. Why was it added in the first place? > > Reviewed-by: Igor Reznichenko > Signed-off-by: Romain TISSERAND > --- > .../devicetree/bindings/display/panel/ilitek,ili9488.yaml | 1 - > 1 file changed, 1 deletion(-) Reviewed-by: Krzysztof Kozlowski Best regards, Krzysztof