From patchwork Fri Aug 24 10:27:41 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kiran Gunda X-Patchwork-Id: 10576543 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 59D381390 for ; Mon, 27 Aug 2018 07:37:50 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 3FEFE29702 for ; Mon, 27 Aug 2018 07:37:50 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 31B3729847; Mon, 27 Aug 2018 07:37:50 +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 B584129702 for ; Mon, 27 Aug 2018 07:37:49 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 330436E23D; Mon, 27 Aug 2018 07:36:07 +0000 (UTC) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from smtp.codeaurora.org (smtp.codeaurora.org [198.145.29.96]) by gabe.freedesktop.org (Postfix) with ESMTPS id 2253B893CB for ; Fri, 24 Aug 2018 10:28:36 +0000 (UTC) Received: by smtp.codeaurora.org (Postfix, from userid 1000) id AC8876053D; Fri, 24 Aug 2018 10:28:26 +0000 (UTC) Received: from kgunda-linux.qualcomm.com (blr-c-bdr-fw-01_globalnat_allzones-outside.qualcomm.com [103.229.19.19]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: kgunda@smtp.codeaurora.org) by smtp.codeaurora.org (Postfix) with ESMTPSA id 7038B601DA; Fri, 24 Aug 2018 10:28:10 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org 7038B601DA From: Kiran Gunda To: bjorn.andersson@linaro.org, jingoohan1@gmail.com, lee.jones@linaro.org, b.zolnierkie@samsung.com, dri-devel@lists.freedesktop.org, daniel.thompson@linaro.org, jacek.anaszewski@gmail.com, pavel@ucw.cz, robh+dt@kernel.org, mark.rutland@arm.com, linux-leds@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH V5 2/8] backlight: qcom-wled: restructure the qcom-wled bindings Date: Fri, 24 Aug 2018 15:57:41 +0530 Message-Id: <1535106467-17843-3-git-send-email-kgunda@codeaurora.org> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1535106467-17843-1-git-send-email-kgunda@codeaurora.org> References: <1535106467-17843-1-git-send-email-kgunda@codeaurora.org> X-Mailman-Approved-At: Mon, 27 Aug 2018 07:34:44 +0000 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-arm-msm@vger.kernel.org, Kiran Gunda MIME-Version: 1.0 Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" X-Virus-Scanned: ClamAV using ClamSMTP Restructure the qcom-wled bindings for the better readability. Signed-off-by: Kiran Gunda Reviewed-by: Bjorn Andersson Reviewed-by: Rob Herring Acked-by: Daniel Thompson Acked-by: Pavel Machek --- Changes from V3: Added Reviewed-by and Acked-by tags. Changes from V4: None .../bindings/leds/backlight/qcom-wled.txt | 110 ++++++++++++++++----- 1 file changed, 85 insertions(+), 25 deletions(-) diff --git a/Documentation/devicetree/bindings/leds/backlight/qcom-wled.txt b/Documentation/devicetree/bindings/leds/backlight/qcom-wled.txt index fb39e32..14f28f2 100644 --- a/Documentation/devicetree/bindings/leds/backlight/qcom-wled.txt +++ b/Documentation/devicetree/bindings/leds/backlight/qcom-wled.txt @@ -1,30 +1,90 @@ Binding for Qualcomm Technologies, Inc. WLED driver -Required properties: -- compatible: should be "qcom,pm8941-wled" -- reg: slave address - -Optional properties: -- default-brightness: brightness value on boot, value from: 0-4095 - default: 2048 -- label: The name of the backlight device -- qcom,cs-out: bool; enable current sink output -- qcom,cabc: bool; enable content adaptive backlight control -- qcom,ext-gen: bool; use externally generated modulator signal to dim -- qcom,current-limit: mA; per-string current limit; value from 0 to 25 - default: 20mA -- qcom,current-boost-limit: mA; boost current limit; one of: - 105, 385, 525, 805, 980, 1260, 1400, 1680 - default: 805mA -- qcom,switching-freq: kHz; switching frequency; one of: - 600, 640, 685, 738, 800, 872, 960, 1066, 1200, 1371, - 1600, 1920, 2400, 3200, 4800, 9600, - default: 1600kHz -- qcom,ovp: V; Over-voltage protection limit; one of: - 27, 29, 32, 35 - default: 29V -- qcom,num-strings: #; number of led strings attached; value from 1 to 3 - default: 2 +WLED (White Light Emitting Diode) driver is used for controlling display +backlight that is part of PMIC on Qualcomm Technologies, Inc. reference +platforms. The PMIC is connected to the host processor via SPMI bus. + +- compatible + Usage: required + Value type: + Definition: should be one of: + "qcom,pm8941-wled" + "qcom,pmi8998-wled" + "qcom,pm660l-wled" + +- reg + Usage: required + Value type: + Definition: Base address of the WLED modules. + +- default-brightness + Usage: optional + Value type: + Definition: brightness value on boot, value from: 0-4095 + Default: 2048 + +- label + Usage: required + Value type: + Definition: The name of the backlight device + +- qcom,cs-out + Usage: optional + Value type: + Definition: enable current sink output. + This property is supported only for PM8941. + +- qcom,cabc + Usage: optional + Value type: + Definition: enable content adaptive backlight control. + +- qcom,ext-gen + Usage: optional + Value type: + Definition: use externally generated modulator signal to dim. + This property is supported only for PM8941. + +- qcom,current-limit + Usage: optional + Value type: + Definition: mA; per-string current limit + value: For pm8941: from 0 to 25 with 5 mA step + Default 20 mA. + For pmi8998: from 0 to 30 with 5 mA step + Default 25 mA. + +- qcom,current-boost-limit + Usage: optional + Value type: + Definition: mA; boost current limit. + For pm8941: one of: 105, 385, 525, 805, 980, 1260, 1400, + 1680. Default: 805 mA + For pmi8998: one of: 105, 280, 450, 620, 970, 1150, 1300, + 1500. Default: 970 mA + +- qcom,switching-freq + Usage: optional + Value type: + Definition: kHz; switching frequency; one of: 600, 640, 685, 738, + 800, 872, 960, 1066, 1200, 1371, 1600, 1920, 2400, 3200, + 4800, 9600. + Default: for pm8941: 1600 kHz + for pmi8998: 800 kHz + +- qcom,ovp + Usage: optional + Value type: + Definition: V; Over-voltage protection limit; one of: + 27, 29, 32, 35. default: 29V + This property is supported only for PM8941. + +- qcom,num-strings + Usage: optional + Value type: + Definition: #; number of led strings attached; + value from 1 to 3. default: 2 + This property is supported only for PM8941. Example: