From patchwork Mon Jul 8 10:26:59 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jean-Jacques Hiblot X-Patchwork-Id: 11034821 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 9D657912 for ; Mon, 8 Jul 2019 10:27:23 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 8CAAC284CE for ; Mon, 8 Jul 2019 10:27:23 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 8070D284E9; Mon, 8 Jul 2019 10:27:23 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.2 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 399A7284CE for ; Mon, 8 Jul 2019 10:27:23 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 47F5189C5E; Mon, 8 Jul 2019 10:27:17 +0000 (UTC) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from fllv0016.ext.ti.com (fllv0016.ext.ti.com [198.47.19.142]) by gabe.freedesktop.org (Postfix) with ESMTPS id 15B6E89C5E for ; Mon, 8 Jul 2019 10:27:16 +0000 (UTC) Received: from fllv0034.itg.ti.com ([10.64.40.246]) by fllv0016.ext.ti.com (8.15.2/8.15.2) with ESMTP id x68ARBXf118524; Mon, 8 Jul 2019 05:27:11 -0500 Received: from DLEE103.ent.ti.com (dlee103.ent.ti.com [157.170.170.33]) by fllv0034.itg.ti.com (8.15.2/8.15.2) with ESMTPS id x68ARBHV009832 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=FAIL); Mon, 8 Jul 2019 05:27:11 -0500 Received: from DLEE114.ent.ti.com (157.170.170.25) by DLEE103.ent.ti.com (157.170.170.33) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.1713.5; Mon, 8 Jul 2019 05:27:10 -0500 Received: from lelv0326.itg.ti.com (10.180.67.84) by DLEE114.ent.ti.com (157.170.170.25) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.1713.5 via Frontend Transport; Mon, 8 Jul 2019 05:27:11 -0500 Received: from localhost (ileax41-snat.itg.ti.com [10.172.224.153]) by lelv0326.itg.ti.com (8.15.2/8.15.2) with ESMTP id x68ARAvE027118; Mon, 8 Jul 2019 05:27:10 -0500 From: Jean-Jacques Hiblot To: , , , , , , Subject: [PATCH v2 3/4] dt-bindings: backlight: Add led-backlight binding Date: Mon, 8 Jul 2019 12:26:59 +0200 Message-ID: <20190708102700.23138-4-jjhiblot@ti.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20190708102700.23138-1-jjhiblot@ti.com> References: <20190708102700.23138-1-jjhiblot@ti.com> MIME-Version: 1.0 X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 X-Mailman-Original-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ti.com; s=ti-com-17Q1; t=1562581631; bh=lMpw70wzgXRddxylMnjFZez3adtd5wWViru0eP3oWv4=; h=From:To:CC:Subject:Date:In-Reply-To:References; b=Vkl7NJT5viByd33Timp5MUb/aoNybG7DPggyp1yNvT4OHO9UMX62sG+CZrQ7h62nb plgpHRlqe6ybCKfosDiyeGvVhsFh6ilVM74XTK/TzivuxxcbGejud4gexYWOpIYZb/ CYTvIRUE6WGgjXum6IrR9PWm2Gk0yQ5DKkfdx5vM= X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, tomi.valkeinen@ti.com, dmurphy@ti.com, Jean-Jacques Hiblot , linux-leds@vger.kernel.org Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" X-Virus-Scanned: ClamAV using ClamSMTP Add DT binding for led-backlight. Signed-off-by: Jean-Jacques Hiblot --- .../bindings/leds/backlight/led-backlight.txt | 29 +++++++++++++++++++ 1 file changed, 29 insertions(+) create mode 100644 Documentation/devicetree/bindings/leds/backlight/led-backlight.txt diff --git a/Documentation/devicetree/bindings/leds/backlight/led-backlight.txt b/Documentation/devicetree/bindings/leds/backlight/led-backlight.txt new file mode 100644 index 000000000000..4f545316b288 --- /dev/null +++ b/Documentation/devicetree/bindings/leds/backlight/led-backlight.txt @@ -0,0 +1,29 @@ +led-backlight bindings + +This binding is used to describe a basic backlight device made of LEDs. +It can also be used to describe a backlight device controlled by the output of +a LED driver. + +Required properties: + - compatible: "led-backlight" + - leds: a list of LEDs + +Optional properties: + - brightness-levels: Array of distinct brightness levels. These + are in the range from 0 to 255. The actual brightness + level programmed in each LED will be adjusted based on + its maximum brightness: + led brightness = (level * maximum brightness) / 255 + + - default-brightness-level: The default brightness level (index into the + array defined by the "brightness-levels" property). + +Example: + + backlight { + compatible = "led-backlight"; + + leds = <&led1>, <&led2>; + brightness-levels = <0 4 8 16 32 64 128 255>; + default-brightness-level = <6>; + };