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[86.9.19.6]) by smtp.gmail.com with ESMTPSA id l15-v6sm6677621wrs.95.2018.06.21.06.12.58 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Thu, 21 Jun 2018 06:12:59 -0700 (PDT) Date: Thu, 21 Jun 2018 14:12:57 +0100 From: Daniel Thompson To: Kiran Gunda Cc: bjorn.andersson@linaro.org, jingoohan1@gmail.com, lee.jones@linaro.org, b.zolnierkie@samsung.com, dri-devel@lists.freedesktop.org, Jacek Anaszewski , Pavel Machek , Rob Herring , Mark Rutland , linux-leds@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org Subject: Re: [PATCH V3 2/7] backlight: qcom-wled: restructure the qcom-wled bindings Message-ID: <20180621131257.bql555n5vgwamtlu@holly.lan> References: <1529406822-15379-1-git-send-email-kgunda@codeaurora.org> <1529406822-15379-3-git-send-email-kgunda@codeaurora.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1529406822-15379-3-git-send-email-kgunda@codeaurora.org> User-Agent: NeoMutt/20180512 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Jun 19, 2018 at 04:43:37PM +0530, Kiran Gunda wrote: > Restructure the qcom-wled bindings for the better readability. > > Signed-off-by: Kiran Gunda Acked-by: Daniel Thompson > --- > .../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: > > -- > The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum, > a Linux Foundation Collaborative Project >