From patchwork Tue Sep 11 17:08:22 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dan Murphy X-Patchwork-Id: 10595961 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 98233921 for ; Tue, 11 Sep 2018 17:08:42 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 7FF8129AC0 for ; Tue, 11 Sep 2018 17:08:42 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 73DF129AC5; Tue, 11 Sep 2018 17:08:42 +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=-8.0 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id F099329AC0 for ; Tue, 11 Sep 2018 17:08:41 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727623AbeIKWIy (ORCPT ); Tue, 11 Sep 2018 18:08:54 -0400 Received: from lelv0143.ext.ti.com ([198.47.23.248]:55092 "EHLO lelv0143.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727034AbeIKWIy (ORCPT ); Tue, 11 Sep 2018 18:08:54 -0400 Received: from dlelxv90.itg.ti.com ([172.17.2.17]) by lelv0143.ext.ti.com (8.15.2/8.15.2) with ESMTP id w8BH8air036296; Tue, 11 Sep 2018 12:08:36 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ti.com; s=ti-com-17Q1; t=1536685716; bh=km/UEuNEjUBWPdsXGEHoIXCOgPPIG10V/X1FYiMnXJM=; h=From:To:CC:Subject:Date:In-Reply-To:References; b=CCQ3Go+TLgFck5Ka8SBBkcMMOm4sNrqx2V326JflzlIMLzo7wPUpB+bYIGreVyDWV 3CIm5sD5XQC1APjv9MxNV+2NJcPjaMpOgmqpvmwaeLuC7AHq2klr6kgJwIesNpJqmf g0xx52Bqv5KiHj55r1zPBRH9LAQkpxH09UiTcu7Y= Received: from DLEE110.ent.ti.com (dlee110.ent.ti.com [157.170.170.21]) by dlelxv90.itg.ti.com (8.14.3/8.13.8) with ESMTP id w8BH8aJD017591; Tue, 11 Sep 2018 12:08:36 -0500 Received: from DLEE108.ent.ti.com (157.170.170.38) by DLEE110.ent.ti.com (157.170.170.21) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.1466.3; Tue, 11 Sep 2018 12:08:35 -0500 Received: from dflp33.itg.ti.com (10.64.6.16) by DLEE108.ent.ti.com (157.170.170.38) with Microsoft SMTP Server (version=TLS1_0, cipher=TLS_RSA_WITH_AES_256_CBC_SHA) id 15.1.1466.3 via Frontend Transport; Tue, 11 Sep 2018 12:08:36 -0500 Received: from legion.dal.design.ti.com (legion.dal.design.ti.com [128.247.22.53]) by dflp33.itg.ti.com (8.14.3/8.13.8) with ESMTP id w8BH8ZY2015304; Tue, 11 Sep 2018 12:08:35 -0500 Received: from localhost (a0272616local-lt.dhcp.ti.com [172.22.156.248]) by legion.dal.design.ti.com (8.11.7p1+Sun/8.11.7) with ESMTP id w8BH8Zx21197; Tue, 11 Sep 2018 12:08:35 -0500 (CDT) From: Dan Murphy To: , , CC: , , , , , Dan Murphy Subject: [PATCH v7 3/6] dt-bindings: leds: Add bindings for lm3697 driver Date: Tue, 11 Sep 2018 12:08:22 -0500 Message-ID: <20180911170825.17789-4-dmurphy@ti.com> X-Mailer: git-send-email 2.12.2 In-Reply-To: <20180911170825.17789-1-dmurphy@ti.com> References: <20180911170825.17789-1-dmurphy@ti.com> MIME-Version: 1.0 X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 Sender: linux-omap-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-omap@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Add the device tree bindings for the lm3697 LED driver for backlighting and display. Signed-off-by: Dan Murphy Reviewed-by: Rob Herring --- v7 - Fix compatible from 3967 to 3697, and other comments. - https://lore.kernel.org/patchwork/patch/982550/ v6 - Fix minor issues - https://lore.kernel.org/patchwork/patch/975387/ v5 - Fix the comment for the example - https://lore.kernel.org/patchwork/patch/975060/ v4 - Removed HVLED definition in favor of HVLED place definition - https://lore.kernel.org/patchwork/patch/974812/ v3 - Updated subject with prefered title - https://lore.kernel.org/patchwork/patch/972337/ v2 - Fixed subject and patch commit message - https://lore.kernel.org/patchwork/patch/971326/ .../devicetree/bindings/leds/leds-lm3697.txt | 86 +++++++++++++++++++ 1 file changed, 86 insertions(+) create mode 100644 Documentation/devicetree/bindings/leds/leds-lm3697.txt diff --git a/Documentation/devicetree/bindings/leds/leds-lm3697.txt b/Documentation/devicetree/bindings/leds/leds-lm3697.txt new file mode 100644 index 000000000000..85ae075f6677 --- /dev/null +++ b/Documentation/devicetree/bindings/leds/leds-lm3697.txt @@ -0,0 +1,86 @@ +* Texas Instruments - LM3697 Highly Efficient White LED Driver + +The LM3697 11-bit LED driver provides high- +performance backlight dimming for 1, 2, or 3 series +LED strings while delivering up to 90% efficiency. + +This device is suitable for display and keypad Lighting + +Required properties: + - compatible: + "ti,lm3697" + - reg : I2C slave address + - #address-cells : 1 + - #size-cells : 0 + +Optional properties: + - enable-gpios : GPIO pin to enable/disable the device + - vled-supply : LED supply + +Required child properties: + - reg : 0 - LED is Controlled by bank A + 1 - LED is Controlled by bank B + - led-sources : Indicates which HVLED string is associated to which + control bank. Each element in the array is associated + with a specific HVLED string. Element 0 is HVLED1, + element 1 is HVLED2 and element 2 HVLED3. + Additional information is contained + in Documentation/devicetree/bindings/leds/common.txt + 0 - HVLED is not active in this control bank + 1 - HVLED string is controlled by this control bank + +Optional child properties: + - label : see Documentation/devicetree/bindings/leds/common.txt + - linux,default-trigger : + see Documentation/devicetree/bindings/leds/common.txt + +Example: + +HVLED string 1 and 3 are controlled by control bank A and HVLED 2 string is +controlled by control bank B. + +led-controller@36 { + compatible = "ti,lm3697"; + reg = <0x36>; + #address-cells = <1>; + #size-cells = <0>; + + enable-gpios = <&gpio1 28 GPIO_ACTIVE_HIGH>; + vled-supply = <&vbatt>; + + led@0 { + reg = <0>; + led-sources = <1 0 1>; + label = "white:first_backlight_cluster"; + linux,default-trigger = "backlight"; + }; + + led@1 { + reg = <1>; + led-sources = <0 1 0>; + label = "white:second_backlight_cluster"; + linux,default-trigger = "backlight"; + }; +} + +All HVLED strings controlled by control bank A + +led-controller@36 { + compatible = "ti,lm3697"; + reg = <0x36>; + #address-cells = <1>; + #size-cells = <0>; + + enable-gpios = <&gpio1 28 GPIO_ACTIVE_HIGH>; + vled-supply = <&vbatt>; + + led@0 { + reg = <0>; + led-sources = <1 1 1>; + label = "white:backlight_cluster"; + linux,default-trigger = "backlight"; + }; +} + +For more product information please see the link below: +http://www.ti.com/lit/ds/symlink/lm3697.pdf