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 X-Spam-Level: X-Spam-Status: No, score=-2.3 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_SANE_2 autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 219BFC433DF for ; Tue, 30 Jun 2020 19:22:39 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id EFE7320702 for ; Tue, 30 Jun 2020 19:22:38 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=kemnade.info header.i=@kemnade.info header.b="CSRw4qA3" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726704AbgF3TWh (ORCPT ); Tue, 30 Jun 2020 15:22:37 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:42364 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726283AbgF3TWg (ORCPT ); Tue, 30 Jun 2020 15:22:36 -0400 Received: from mail.andi.de1.cc (mail.andi.de1.cc [IPv6:2a01:238:4321:8900:456f:ecd6:43e:202c]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D3F54C061755; Tue, 30 Jun 2020 12:22:35 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=kemnade.info; s=20180802; h=Content-Transfer-Encoding:Content-Type: MIME-Version:References:In-Reply-To:Message-ID:Subject:Cc:To:From:Date:Sender :Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Id:List-Help: List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=Z50zmfnBPo2u0p8708BAruvf3MnDJq1nng3tchC4BxM=; b=CSRw4qA3mqrXDXC30pTR66alas v8/PTBq36Esj+PKN5s/rhns+lUf5KGCaFmEjZLDjCMief1m4AzpfaSpc4pou2l0sWIOxlI1pDg654 1hCURAZCV5U5z0PapH1RKgrrIwNB7wug4UAaLLNjuNBQINiSr99qYZPe67P4DDMxbpTc=; Received: from p200300ccff14dd001a3da2fffebfd33a.dip0.t-ipconnect.de ([2003:cc:ff14:dd00:1a3d:a2ff:febf:d33a] helo=aktux) by mail.andi.de1.cc with esmtpsa (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.89) (envelope-from ) id 1jqLpZ-0001r0-AN; Tue, 30 Jun 2020 21:22:09 +0200 Date: Tue, 30 Jun 2020 21:22:07 +0200 From: Andreas Kemnade To: Jonathan =?UTF-8?B?TmV1c2Now6RmZXI=?= Cc: linux-kernel@vger.kernel.org, Lee Jones , Rob Herring , Thierry Reding , Uwe =?UTF-8?B?S2xlaW5lLUvDtm5pZw==?= , Alessandro Zummo , Alexandre Belloni , Shawn Guo , Sascha Hauer , Pengutronix Kernel Team , Fabio Estevam , NXP Linux Team , Sam Ravnborg , Linus Walleij , Heiko Stuebner , Stephan Gerhold , Lubomir Rintel , Mark Brown , allen , Mauro Carvalho Chehab , "David S. Miller" , devicetree@vger.kernel.org, linux-pwm@vger.kernel.org, linux-rtc@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Heiko Stuebner , Josua Mayer Subject: Re: [RFC PATCH 00/10] Netronix embedded controller driver for Kobo and Tolino ebook readers Message-ID: <20200630212207.018ad355@aktux> In-Reply-To: <20200630071523.GA2983@latitude> References: <20200620223915.1311485-1-j.neuschaefer@gmx.net> <20200630084051.66feadea@aktux> <20200630071523.GA2983@latitude> X-Mailer: Claws Mail 3.17.3 (GTK+ 2.24.32; x86_64-pc-linux-gnu) MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Sender: linux-rtc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-rtc@vger.kernel.org On Tue, 30 Jun 2020 09:15:23 +0200 Jonathan Neusch=C3=A4fer wrote: > On Tue, Jun 30, 2020 at 08:40:51AM +0200, Andreas Kemnade wrote: > [...] > > got a chance to test it on a Tolino Shine 2 HD. > > It uses the RTC from the RC5T619 but backlight seems to go via MSP430 > > EC. > >=20 > > I got this. > >=20 > > [ 1.453603] ntxec 0-0043: Netronix embedded controller version f110 = detected. > > [ 10.723638] ntxec-rtc 21a0000.i2c:embedded-controller@43:rtc: regist= ered as rtc0 > > [ 10.775276] ntxec-pwm: probe of 21a0000.i2c:embedded-controller@43:p= wm failed with error -5 =20 >=20 > Hmm, -EIO from the PWM driver. > Weird... IOMUXC_SW_PAD_CTL_PAD_I2C1_SDA/SCL is identical between vendor kernel (heavily patched 3.0.35) and patched mainline. =20 MX6SL_PAD_I2C1_SCL__I2C1_SCL 0x4001f8b1 MX6SL_PAD_I2C1_SDA__I2C1_SDA 0x4001f8b1 root@tolino2:~# i2cset -f 0 0x43 0xa3 0x0001 w WARNING! This program can confuse your I2C bus, cause data loss and worse! I will write to device file /dev/i2c-0, chip address 0x43, data address 0xa3, data 0x01, mode word. Continue? [Y/n]=20 Error: Write failed root@tolino2:~# i2cset -f 0 0x43 0xa3 0x0000 w WARNING! This program can confuse your I2C bus, cause data loss and worse! I will write to device file /dev/i2c-0, chip address 0x43, data address 0xa3, data 0x00, mode word. Continue? [Y/n]=20 Error: Write failed but backlight gets toggled. Same behavior on vendor kernel and in vendor uboot. That smells. Regards, Andreas