From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 976171B2183; Mon, 25 Nov 2024 14:50:04 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1732546204; cv=none; b=AzXVMHWxhTVsyPw8l9WHB557jhQO2pJdhG8A+1bTw3yHjJOEUnIc9gmFMuMHcp9l8tKvlnVAz5E/ajfWpZqZv3FrhUmK3Dapt+SNEyrUtiLfBgUSFTRABC31i2uYDayBlrQ3duK5EvCwbp5U1mR/TE5lY6w49D5ubxcfohrgzTc= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1732546204; c=relaxed/simple; bh=3E/gtn9GHrul6L6mZfw/TFiLD078vCQyG4pAMtXnGZA=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=ZAj9ciAickzaSb0WPmPK//guJrIvBDIV21Z0rml9zbWbSxIfVVJuaLD+7QjWS+pqBlZUM1AsvzMZmW2SygPWMTcHUf35PqTnTUW4XpqiawwJEbM89aJ+QcTC7v6Qlns+xFrdfABJCkTlpytTmS9ZQAog9wi3gFYfMk0/FxVBtsI= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=TTPqzCy0; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="TTPqzCy0" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 8DDBFC4CECE; Mon, 25 Nov 2024 14:49:57 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1732546204; bh=3E/gtn9GHrul6L6mZfw/TFiLD078vCQyG4pAMtXnGZA=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=TTPqzCy0WakTehonbaGeYqrp1CWOyqszZvHMfxwEXevQOUSLho9rIOc/nqVLU/+x3 1ryzXOSAptle6iuSyDX/5yohsMiz5X2nzg7E09RQp4UOTSV6KHqoY5dyomfNgAnQSx RZYlkgaZ1SCb0k5EmWP/Vti5fs1CnU0gxMqXxupu5oalfniXlot9HHmIOO/UNZtqzO 2V65jSJJco+8I7OrEwmA0pF1isekjjFazLKLsWpEOHoLQbJFyJL6mOZPVicjd1/3jS krlCndnleTZXJoSt5ygzWL0gw3kBm9c9K4wa3DRx+toNPAea7fElYhc2U4E4XWh9ER iBVkgC1wcyP0A== Message-ID: Date: Mon, 25 Nov 2024 15:49:55 +0100 Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 3/5] gpu: drm: adp: Add a backlight driver for the Summit LCD To: fnkl.kernel@gmail.com, Hector Martin , Sven Peter , Alyssa Rosenzweig , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Simona Vetter , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Neil Armstrong , Jessica Zhang , asahi@lists.linux.dev Cc: linux-arm-kernel@lists.infradead.org, dri-devel@lists.freedesktop.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Nick Chan References: <20241124-adpdrm-v1-0-3191d8e6e49a@gmail.com> <20241124-adpdrm-v1-3-3191d8e6e49a@gmail.com> From: Krzysztof Kozlowski Content-Language: en-US Autocrypt: addr=krzk@kernel.org; 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charset=UTF-8 Content-Transfer-Encoding: 7bit On 24/11/2024 23:29, Sasha Finkelstein via B4 Relay wrote: > From: Sasha Finkelstein > > This is the display panel used for the touchbar on laptops that have it. ... > +static int summit_probe(struct mipi_dsi_device *dsi) > +{ > + struct backlight_properties props = { 0 }; > + struct device *dev = &dsi->dev; > + struct summit_data *panel; > + > + panel = devm_kzalloc(dev, sizeof(*panel), GFP_KERNEL); > + if (!panel) > + return -ENOMEM; > + > + mipi_dsi_set_drvdata(dsi, panel); > + panel->dsi = dsi; > + > + int ret = device_property_read_u32(dev, "max-brightness", &props.max_brightness); That's an undocumented property, which suggests you did not test your DTS. It does not look like you tested the DTS against bindings. Please run `make dtbs_check W=1` (see Documentation/devicetree/bindings/writing-schema.rst or https://www.linaro.org/blog/tips-and-tricks-for-validating-devicetree-sources-with-the-devicetree-schema/ for instructions). Best regards, Krzysztof