From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 0710FC6FD1F for ; Fri, 17 Mar 2023 01:07:19 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229658AbjCQBHS (ORCPT ); Thu, 16 Mar 2023 21:07:18 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:60298 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229648AbjCQBHR (ORCPT ); Thu, 16 Mar 2023 21:07:17 -0400 Received: from mg.richtek.com (mg.richtek.com [220.130.44.152]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 48162442E7; Thu, 16 Mar 2023 18:07:13 -0700 (PDT) X-MailGates: (flag:4,DYNAMIC,BADHELO,RELAY,NOHOST:PASS)(compute_score:DE LIVER,40,3) Received: from 192.168.10.46 by mg.richtek.com with MailGates ESMTP Server V5.0(15352:0:AUTH_RELAY) (envelope-from ); Fri, 17 Mar 2023 09:06:28 +0800 (CST) Received: from ex4.rt.l (192.168.10.47) by ex3.rt.l (192.168.10.46) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1118.25; Fri, 17 Mar 2023 09:06:28 +0800 Received: from linuxcarl2.richtek.com (192.168.10.154) by ex4.rt.l (192.168.10.45) with Microsoft SMTP Server id 15.2.1118.25 via Frontend Transport; Fri, 17 Mar 2023 09:06:28 +0800 Date: Fri, 17 Mar 2023 09:06:28 +0800 From: ChiYuan Huang To: Lee Jones CC: ChiaEn Wu , , , , , , , , , , , , , Subject: Re: [PATCH v18 3/3] docs: leds: Add MT6370 RGB LED pattern document Message-ID: <20230317010628.GA32541@linuxcarl2.richtek.com> References: <38f1e863b0f099158a63fb6f95056a1cb30d80a0.1678430444.git.chiaen_wu@richtek.com> <20230316155149.GK9667@google.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <20230316155149.GK9667@google.com> User-Agent: Mutt/1.5.21 (2010-09-15) Precedence: bulk List-ID: X-Mailing-List: linux-doc@vger.kernel.org On Thu, Mar 16, 2023 at 03:51:49PM +0000, Lee Jones wrote: > On Fri, 10 Mar 2023, ChiaEn Wu wrote: > > > From: ChiYuan Huang > > > > Document the MT6370 RGB LED pattern trigger. > > > > This simply describe how the pattern works, each timing period, and the > > pattern diagram for MT6370 RGB LED. > > > > Signed-off-by: ChiYuan Huang > > Signed-off-by: ChiaEn Wu > > --- > > v18: > > - Revise the text in document title and description. > > --- > > Documentation/leds/leds-mt6370-rgb.rst | 64 ++++++++++++++++++++++++++++++++++ > > These 3 patches now look good. > > You do not need to make any more changes to these. > > > 1 file changed, 64 insertions(+) > > create mode 100644 Documentation/leds/leds-mt6370-rgb.rst > > > > diff --git a/Documentation/leds/leds-mt6370-rgb.rst b/Documentation/leds/leds-mt6370-rgb.rst > > new file mode 100644 > > index 00000000..abf739e > > --- /dev/null > > +++ b/Documentation/leds/leds-mt6370-rgb.rst > > @@ -0,0 +1,64 @@ > > +.. SPDX-License-Identifier: GPL-2.0 > > + > > +========================================= > > +The device for Mediatek MT6370 RGB LED > > +========================================= > > + > > +Description > > +----------- > > + > > +The MT6370 integrates a four-channel RGB LED driver, designed to provide a > > +variety of lighting effect for mobile device applications. The RGB LED devices > > +includes a smart LED string controller and it can drive 3 channels of LEDs with > > +a sink current up to 24mA and a CHG_VIN power good indicator LED with sink > > +current up to 6mA. It provides three operation modes for RGB LEDs: > > +PWM Dimming mode, breath pattern mode, and constant current mode. The device > > +can increase or decrease the brightness of the RGB LED via an I2C interface. > > + > > +The breath pattern for a channel can be programmed using the "pattern" trigger, > > +using the hw_pattern attribute. > > + > > +/sys/class/leds//hw_pattern > > However, this needs an entry in Documentation/ABI/testing. > This comes from the led-trigger-pattern and already documented in 'sysfs-class-led-trigger-pattern'. > > +-------------------------------- > > + > > +Specify a hardware breath pattern for a MT6370 RGB LED. > > + > > +The breath pattern is a series of timing pairs, with the hold-time expressed in > > +milliseconds. And the brightness is controlled by > > +'/sys/class/leds//brightness'. The pattern doesn't include the brightness > > +setting. Hardware pattern only controls the timing for each pattern stage > > +depending on the current brightness setting. > > + > > +Pattern diagram:: > > + > > + "0 Tr1 0 Tr2 0 Tf1 0 Tf2 0 Ton 0 Toff" --> '0' for dummy brightness code > > + > > + ^ > > + | ============ > > + | / \ / > > +Icurr | / \ / > > + | / \ / > > + | / \ / .....repeat > > + | / \ / > > + | --- --- --- > > + |--- --- --- > > + +----------------------------------============------------> Time > > + < Tr1>< Ton >< Toff >< Tr1> > > + > > +Timing description:: > > + > > +Tr1: First rising time for duty 0 to 30%. > > +Tr2: Second rising time for duty 31% to 100%. > > +Ton: On time for duty 100%. > > +Tf1: First falling time for duty 100% to 31%. > > +Tf2: Second falling time for duty 30% to 0%. > > +Toff: Off time for duty 0%. > > + > > +Tr1/Tr2/Tf1/Tf2/Ton: 125ms to 3125ms, 200ms per step. > > +Toff: 250ms to 6250ms, 400ms per step. > > + > > +Pattern example:: > > + > > + "0 125 0 125 0 125 0 125 0 625 0 1050" > > + > > +This Will configure Tr1/Tr2/Tf1/Tf2 to 125m, Ton to 625ms, and Toff to 1050ms. > > -- > > 2.7.4 > > > > -- > Lee Jones [李琼斯] From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id BE8DAC74A5B for ; Fri, 17 Mar 2023 01:08:41 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:References: Message-ID:Subject:CC:To:From:Date:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: 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