From patchwork Mon Jan 22 19:50:58 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: 764749 Received: from mx.skole.hr (mx2.hosting.skole.hr [161.53.165.186]) (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 AF8413D981; Mon, 22 Jan 2024 19:51:42 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=161.53.165.186 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1705953105; cv=none; b=KzjiOsLCtOBT8B2z7w7/hSy6xNjHS/xNGbHbpPgH1u7horJs410qX0sdN126dapBR80XjWtNe5ke2pGsInEnvc3NFhUEX0QOQJ6A8q521NDqsEIB/3f2mYCQldV/+XLmrqIY+eUIBZebaKBzarAJw1DVYCkcxa2YoI2DUOo7L0I= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1705953105; c=relaxed/simple; bh=0YufyoxCcDHdvrCe1DCC6ao7YtZtJoU6/jXb8S7jhuc=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=S25jM3KhssSfZZcCdpVG4SiIv/dEkbRbUZMaMgUv633jlALSLVS2Gx5JPf/KWU577/LGGouPtzfuGUn5JVqfNb8Xg7t/4HrfCp3uePpgs1lMC/WxmmJXJXK+gelfYmiLQQ/eRTpsjSj3Lg9y+XbQR0GIYnMIY2Z5tvFfbvVeOOg= 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=161.53.165.186 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 mx2.hosting.skole.hr (localhost.localdomain [127.0.0.1]) by mx.skole.hr (mx.skole.hr) with ESMTP id 898648689C; Mon, 22 Jan 2024 20:51:40 +0100 (CET) From: =?utf-8?q?Duje_Mihanovi=C4=87?= Date: Mon, 22 Jan 2024 20:50:58 +0100 Subject: [PATCH v4 2/3] dt-bindings: backlight: add Kinetic KTD2801 binding Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20240122-ktd2801-v4-2-33c986a3eb68@skole.hr> References: <20240122-ktd2801-v4-0-33c986a3eb68@skole.hr> In-Reply-To: <20240122-ktd2801-v4-0-33c986a3eb68@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=1941; i=duje.mihanovic@skole.hr; h=from:subject:message-id; bh=0YufyoxCcDHdvrCe1DCC6ao7YtZtJoU6/jXb8S7jhuc=; b=owEBbQKS/ZANAwAIAZoRnrBCLZbhAcsmYgBlrsckO1mwx44YvZ3Dc3vxmj9vux3yBgfybdSqz pzWPxya09WJAjMEAAEIAB0WIQRT351NnD/hEPs2LXiaEZ6wQi2W4QUCZa7HJAAKCRCaEZ6wQi2W 4WmYEACb+8QNWDYRs9Ws6URBZHTMcmYpGX91/smv02pU7AujWpAUZbArxpyHjWMitPiPK9BierL PKG8VVdhfjMI6fIrzH5QaK18hn4XoRNDD6XWWvAnoxl6J4CEAXjfCCFUAAvQhmneuT0+noHNm3h OPwO8J6BxRLur/AfCjA2tle6EtXcYRv34Ww4M36hZzn7URzoiCvabtf0yctEQAhfFpo6Y/rAqQm 7uJSfVssxae0QXqhfC4m5LE0zw6Xl2Mv8shxWrlI8hHoF77eVUe8jJo8EtfEcJbj0t22ZHJlwJj Np1Y/Q9F2h8kJTScvHnfwkmrAKLn9upCiPQQ7E+QDF0LP8fMed8pY4GT779n9W2duZf5N0+eRlz Wcsp9jxQmdfHpRYZvfrWqvJ4s5Rkpa+NkJFdlCXlDeVk1F3G0i6vsth2vM85UNDmIWr2F1Xji6o UIN9Vrww/2vX0/Hct0ZNg9Ss7cVckIVyxc4QmLsRI17gVPztD+FLrDOWXod1qSTIGJRT00SKJJD O/TGjCJWJo6cQJLis4gJ34Fy8Fza66t/DNNluaJSkSYSHZzW1iX5CsjPsBTKT8N5Larxa+epgi3 iRy2FHLgA/GMOCeCP2jOGNjx8Gnz1ECU6tNdYV4Hu38n2ovebY4jX+OhCLi0my0QSuBdvDga9SE 3ahH/6ZkawbaQqw== 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 Signed-off-by: Duje Mihanović Reviewed-by: Daniel Thompson --- .../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>; + };