From mboxrd@z Thu Jan 1 00:00:00 1970 From: Daniel Thompson Subject: Re: [PATCH 0/2] backlight: pwm_bl: prevent backlight flicker when switching PWM on Date: Wed, 8 Nov 2017 10:48:01 +0000 Message-ID: References: <1509022186-19636-1-git-send-email-LW@KARO-electronics.de> <1509022186-19636-2-git-send-email-LW@KARO-electronics.de> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 8bit Return-path: In-Reply-To: <1509022186-19636-2-git-send-email-LW-bxm8fMRDkQLDiMYJYoSAnRvVK+yQ3ZXh@public.gmane.org> Content-Language: en-US Sender: devicetree-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: =?UTF-8?Q?Lothar_Wa=c3=9fmann?= , Bartlomiej Zolnierkiewicz , Jacek Anaszewski , Jingoo Han , Lee Jones , Mark Rutland , Pavel Machek , Richard Purdie , Rob Herring , Thierry Reding , devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-fbdev-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-leds-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-pwm-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, Enric Balletbo i Serra List-Id: devicetree@vger.kernel.org On 26/10/17 13:49, Lothar Waßmann wrote: > These patches implement some measures to prevent backlight flicker > when the backlight is being switched on for a display with an active > low brightness control pin. > GIT: [PATCH 1/2] backlight: pwm_bl: Enable PWM before switching regulator > GIT: [PATCH 2/2] backlight: pwm_bl: add configurable delay between Other than hoisting the pwm_enable() even earlier in the setup sequence this patchset seems to have a significant overlap with Enric's recent posting: https://lkml.org/lkml/2017/7/21/211 Any chance of a shared view on this, especially on the DT bindings? Daniel. -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html