From patchwork Thu Jan 25 15:30:55 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Duje_Mihanovi=C4=87?= X-Patchwork-Id: 766219 Received: from mx.skole.hr (mx1.hosting.skole.hr [161.53.165.185]) (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 D9D42745DD; Thu, 25 Jan 2024 15:32:07 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=161.53.165.185 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1706196730; cv=none; b=d1gRvW6A0MliNVNyp9K9QNkaMiAJa+pqc0zNUOu7GPbyS0UMxepqqx5J7AqI3na/SP5uHUKipXpL4DMck8HFukH8K/N3HPB2aJh20/eJD5Jbj6ptQee9CkDrvW7f1J0N+HFuEuthztXW/5FbWckdDO6LTwRuKkSTdmDMScHldL8= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1706196730; c=relaxed/simple; bh=LJvKeqWnmJS9YgQYzDhJWoFRmXHdCPe0hkHgpXGDTkE=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=kFEQ1NvQBaRiLxGfhjnQPV4fUhO9DtlGOlnP03noCydS9WsA7B6WG7lkSEeuaM/1tFf0jMF0SsCoMQYQLTAuuaY6nI/AqUUfWgNSJpobfkG+uq2FqYxpzYG9bualf7apwIYe6Dvh6DvayyroIfYdEUMPWJ/wwXgZpiwPkPKuunI= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=skole.hr; spf=pass smtp.mailfrom=skole.hr; arc=none smtp.client-ip=161.53.165.185 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=skole.hr Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=skole.hr Received: from mx1.hosting.skole.hr (localhost.localdomain [127.0.0.1]) by mx.skole.hr (mx.skole.hr) with ESMTP id A4F1084FE8; Thu, 25 Jan 2024 16:31:59 +0100 (CET) From: =?utf-8?q?Duje_Mihanovi=C4=87?= Date: Thu, 25 Jan 2024 16:30:55 +0100 Subject: [PATCH v5 3/4] dt-bindings: backlight: add Kinetic KTD2801 binding Precedence: bulk X-Mailing-List: linux-leds@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20240125-ktd2801-v5-3-e22da232a825@skole.hr> References: <20240125-ktd2801-v5-0-e22da232a825@skole.hr> In-Reply-To: <20240125-ktd2801-v5-0-e22da232a825@skole.hr> To: Lee Jones , Daniel Thompson , Jingoo Han , Pavel Machek , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Helge Deller , Linus Walleij Cc: Karel Balej , ~postmarketos/upstreaming@lists.sr.ht, phone-devel@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-leds@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-fbdev@vger.kernel.org, =?utf-8?q?Duje_?= =?utf-8?q?Mihanovi=C4=87?= , Krzysztof Kozlowski X-Mailer: b4 0.12.4 X-Developer-Signature: v=1; a=openpgp-sha256; l=2000; i=duje.mihanovic@skole.hr; h=from:subject:message-id; bh=LJvKeqWnmJS9YgQYzDhJWoFRmXHdCPe0hkHgpXGDTkE=; b=owEBbQKS/ZANAwAIAZoRnrBCLZbhAcsmYgBlsn7DgswBUZqnKT+8/fcnn9Hru+hah1ioow/Af vXnD4GbKIyJAjMEAAEIAB0WIQRT351NnD/hEPs2LXiaEZ6wQi2W4QUCZbJ+wwAKCRCaEZ6wQi2W 4R0BD/kB/1Eg1ozHsKPtWBSWi3LiCM+qxnj2ZuVCT6/OhEONtnJGsnXjTe5GRZFMElbjnKU5bUK 0Bvew1WXJ2SPqoef0wAmJhXuSVbOVKMWVjaeLDDv8lWY3saxQW6c3spevVPoSDh2devRw3Oa6tC o/3JKl6L634njze/H8v+qsMth8jD54PnN9MekSfP0Mf4YmIaeilDxgRqcd5nL5narH0J76+EONz Y4eYXGyItA2v09zBCe0SURu+zci/Cga/yw1/OdIzRPm4EKNc8hy7g9xfxDuTjMAHmk98arzFOdu KGbzB5FPhpCYPZjmEbQQEYKVH3iaOckm/P6AzFqaDcu/P5khVBCeq5jcY/LH99vaVEs0EcW4W4m XxCkQB6hLLns3wqKaeqdHB7ORHYsMai1ppkTki1AFQWoS+WKkD0TE7SBYb9SMobDimgK3Hi0uZw xuMteBoc7ImL6F5aVB2ZUHVXdOIfsav9JlPS9jmNMW11P0ZrilAa3jbTNhCNVM7PqwudogIVLpz TtoufeERwAsfbxVUj6MskA041zUuwdfn8xat2aJe01vop6ItZ6G+KoXcWxe26++jXIHD3lwIPQ6 h8ztWDgrcVG4zq+m6lDYEOdKUpwRXtRxaR9McbnpA6r28wNl8BldfgJy342B08zvwQ7FgQ5xTig 3cAbMMec7AzUZ6w== X-Developer-Key: i=duje.mihanovic@skole.hr; a=openpgp; fpr=53DF9D4D9C3FE110FB362D789A119EB0422D96E1 KTD2801 is a LED backlight driver IC found in samsung,coreprimevelte. The brightness can be set using PWM or the ExpressWire protocol. Add a DT binding for the KTD2801. Reviewed-by: Krzysztof Kozlowski Reviewed-by: Linus Walleij Reviewed-by: Daniel Thompson Signed-off-by: Duje Mihanović --- .../bindings/leds/backlight/kinetic,ktd2801.yaml | 46 ++++++++++++++++++++++ 1 file changed, 46 insertions(+) diff --git a/Documentation/devicetree/bindings/leds/backlight/kinetic,ktd2801.yaml b/Documentation/devicetree/bindings/leds/backlight/kinetic,ktd2801.yaml new file mode 100644 index 000000000000..b005065e0f48 --- /dev/null +++ b/Documentation/devicetree/bindings/leds/backlight/kinetic,ktd2801.yaml @@ -0,0 +1,46 @@ +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/leds/backlight/kinetic,ktd2801.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Kinetic Technologies KTD2801 one-wire backlight + +maintainers: + - Duje Mihanović + +description: | + The Kinetic Technologies KTD2801 is a LED backlight driver controlled + by a single GPIO line. The driver can be controlled with a PWM signal + or by pulsing the GPIO line to set the backlight level. This is called + "ExpressWire". + +allOf: + - $ref: common.yaml# + +properties: + compatible: + const: kinetic,ktd2801 + + ctrl-gpios: + maxItems: 1 + + default-brightness: true + max-brightness: true + +required: + - compatible + - ctrl-gpios + +additionalProperties: false + +examples: + - | + #include + + backlight { + compatible = "kinetic,ktd2801"; + ctrl-gpios = <&gpio 97 GPIO_ACTIVE_HIGH>; + max-brightness = <210>; + default-brightness = <100>; + };