From mboxrd@z Thu Jan 1 00:00:00 1970 From: Bjorn Andersson Subject: Re: [PATCH v2 2/2] leds: add Qualcomm PM8941 WLED driver Date: Tue, 17 Feb 2015 15:05:55 -0800 Message-ID: References: <1422060853-1067-1-git-send-email-bjorn.andersson@sonymobile.com> <1422060853-1067-2-git-send-email-bjorn.andersson@sonymobile.com> <1422535712.28891.3.camel@mm-sol.com> <54DD7896.9020403@codeaurora.org> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Return-path: In-Reply-To: <54DD7896.9020403@codeaurora.org> Sender: linux-arm-msm-owner@vger.kernel.org To: Stephen Boyd Cc: "Ivan T. Ivanov" , Bjorn Andersson , Rob Herring , Pawel Moll , Mark Rutland , Ian Campbell , Kumar Gala , Bryan Wu , Richard Purdie , Grant Likely , Courtney Cavin , "devicetree@vger.kernel.org" , "linux-kernel@vger.kernel.org" , Linux LED Subsystem , linux-arm-msm List-Id: linux-leds@vger.kernel.org On Thu, Feb 12, 2015 at 8:07 PM, Stephen Boyd wrote: > On 01/29/15 04:48, Ivan T. Ivanov wrote: >> >> Otherwise it looks good. Driver is loaded and device is detected >> properly (i have added readings for type and subtype registers). >> Do you know where I can measure result from changing brightness >> sysfs entry. I am using 8074 dragonboard? > > Does the backlight turn on? From what I can tell it controls the > backlight, but it may be that nothings getting displayed so it won't be > noticeable. > I have not measured the voltage/current, nor have had something on the display. But on the various devices I've tested (Xperia Z1 & Xperia Z Ultra) the backlight is clearly on. Regards, Bjorn