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smtp.subspace.kernel.org; dkim=pass header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=ofxZWAjz; 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 24A0E606A31A; Tue, 27 Oct 2026 14:34:27 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key, unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=ofxZWAjz Received: by smtp.kernel.org (Postfix) with ESMTPSA id DDA341F01825; Tue, 27 Oct 2026 14:34:21 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1793111667; bh=jT5PzdDfgSIDiw7yKOw2jNJK4YORQrPPmHqOm/sh9Ao=; h=Date:Subject:To:Cc:References:From:In-Reply-To; b=ofxZWAjzBSDFYLkpmGfOLauQU+NoDFF1w3Ek76wI1nXGUsv0zzNXJ+zCnaFM7bJPV GJOzlv8CDkYDWulZ+lD+kUO9maG4FYmEixWuDFMiUU8D99DcdSqXUS6k5FbVC3wXQP l9zyaenp8OwlRk3FPOxoq4JeDWm3di7YlC9j+x9hyPkjeSwHh957dKjIfDyo5Q3+Cd Z8n0dwxXqAL34LqNtn/uqKoB0iDMLSU3yAkNZwqxfozUy6SYH2xr5hR58yDgc0ayAV 7WjarZVDCVJebhdRjWUciP/QuoOnWhelQwyo9Sl4e4YVd3W4NEMQnVkIq+cU1X1MDu HaNL3gAWqJn/g== Message-ID: Date: Tue, 27 Oct 2026 15:34:19 +0100 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 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH] dt-bindings: display: panel: ilitek,ili7807s: Allow backlight property To: Vishnu Saini Cc: Neil Armstrong , Jessica Zhang , David Airlie , Simona Vetter , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Arpit Saini , dri-devel@lists.freedesktop.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, venkata.valluru@oss.qualcomm.com References: <20261025-dlc_backlight-v1-1-1d1c49c3e101@oss.qualcomm.com> <20261027-fantastic-benevolent-boobook-272a9a@quoll> From: Krzysztof Kozlowski Content-Language: en-US Autocrypt: addr=krzk@kernel.org; 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charset=UTF-8 Content-Transfer-Encoding: 7bit On 27/10/2026 11:57, Vishnu Saini wrote: > On Tue, Oct 27, 2026 at 09:12:27AM +0100, Krzysztof Kozlowski wrote: >> On Sun, Oct 25, 2026 at 12:18:17PM +0530, Vishnu Saini wrote: >>> The DLC0697 panel is lit by a separate backlight device, which is >>> referenced from the panel node through the common 'backlight' >>> property. >>> >>> Declare 'backlight: true' so the property is explicitly allowed by the >>> schema. >> >> Why do you need to explicitly allow it? Since when? >> >> I see no benefit of this patch and commit msg does not explain me what >> that benefit would be. > It is required for below DLC panel, when enabling backlight using gpio-backlight driver, How is it required? You did not really answer, so again: Why do you need to explicitly allow it? Answer starts "because ... " and you provide technical arguments, not wishes. Best regards, Krzysztof