From patchwork Mon Sep 30 06:39:07 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kiran Gunda X-Patchwork-Id: 11166083 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 6531E1747 for ; Mon, 30 Sep 2019 06:40:31 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 3A23C218DE for ; Mon, 30 Sep 2019 06:40:31 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="key not found in DNS" (0-bit key) header.d=codeaurora.org header.i=@codeaurora.org header.b="TMODciPx"; dkim=fail reason="key not found in DNS" (0-bit key) header.d=codeaurora.org header.i=@codeaurora.org header.b="BQfkj0DQ" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729800AbfI3GkZ (ORCPT ); Mon, 30 Sep 2019 02:40:25 -0400 Received: from smtp.codeaurora.org ([198.145.29.96]:41990 "EHLO smtp.codeaurora.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729794AbfI3GkZ (ORCPT ); Mon, 30 Sep 2019 02:40:25 -0400 Received: by smtp.codeaurora.org (Postfix, from userid 1000) id 4B4D16118F; Mon, 30 Sep 2019 06:40:23 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=codeaurora.org; s=default; t=1569825623; bh=1jCp8zrS1ZkRvmZi4fZzGJBFTrN6Dbd8uEoQjh+9Ui4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=TMODciPxQg6E+uu2qan0I1chhTwXtPqqbAA07eIGkTbL7YZFOY6e5tuBsnHiuNh0I lfp8Gk6LZA7ARIUsPMJoH2HDnzyYgozfZN2Ld3ExcC8vIQkwdkcJLCZWY+dX3Uos49 uAFx0IkhkUzDLzPsDriJeZDsHfdj0YnBT0gNZUks= X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on pdx-caf-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.7 required=2.0 tests=ALL_TRUSTED,BAYES_00, DKIM_INVALID,DKIM_SIGNED,SPF_NONE autolearn=no autolearn_force=no version=3.4.0 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 B581761212; Mon, 30 Sep 2019 06:40:15 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=codeaurora.org; s=default; t=1569825620; bh=1jCp8zrS1ZkRvmZi4fZzGJBFTrN6Dbd8uEoQjh+9Ui4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=BQfkj0DQP8DBck8kcMYFRkR+frGntbZHbBS0I2LFayi6iN4+8G1Y8a5bFyvrnDAbI mQ7+weZPC3LnNhiD3PiZbl0aWWE0QiQNwnnGhIciuWZJEbWCCTVmBJOuZJXZgfsJhu +qG3XHPbLZdUfcKnRIs5H2m2gppPGCbnAS3ENhFc= DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org B581761212 Authentication-Results: pdx-caf-mail.web.codeaurora.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: pdx-caf-mail.web.codeaurora.org; spf=none smtp.mailfrom=kgunda@codeaurora.org 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, Dan Murphy Cc: linux-arm-msm@vger.kernel.org, Kiran Gunda Subject: [PATCH V6 2/8] backlight: qcom-wled: restructure the qcom-wled bindings Date: Mon, 30 Sep 2019 12:09:07 +0530 Message-Id: <1569825553-26039-3-git-send-email-kgunda@codeaurora.org> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1569825553-26039-1-git-send-email-kgunda@codeaurora.org> References: <1569825553-26039-1-git-send-email-kgunda@codeaurora.org> Sender: linux-arm-msm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org 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 --- .../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: