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 225A0C433F5 for ; Sun, 10 Apr 2022 01:27:09 +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: List-Owner; bh=n/kqOGOAeQc4jm/tEtihoiQ3f44yCr9QbPza3AVe2jY=; b=dMleWAHGpSfjuB Z7Nh+j0KGliUDGOkm0i7Uv/ehrKqBwd5DSQXhfTjLN837kHezE3e+N7nYd/sYTwHzmP1yZ5tYA5kn hGZiXeYRwcucPRK0wsO8//XVmHRY6zhmqj7ARUCzdsYNINCM3mafBTja7HuS7/w/y81BybvcHjVqO RMZGW1pvA0SwlpVJt0Lkmdd9sC87e3ExD4luZSbA82EKRriXnGXeeKUIRcMOpHsbx0YcqpnfHgLHa aYM4Ti3BUUP7DwVRozZH4h3RnLrPPWC9MGbqk6RVWVuUymDS0M+gBhV5lDb/UKJslOWlDIJTKi/3p c08O57XtlGXxflnOHZeA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1ndMKy-0041Wk-BI; Sun, 10 Apr 2022 01:25:56 +0000 Received: from ams.source.kernel.org ([145.40.68.75]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1ndMKu-0041WJ-UQ for linux-arm-kernel@lists.infradead.org; Sun, 10 Apr 2022 01:25:54 +0000 Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id 3EADBB80AFB; Sun, 10 Apr 2022 01:25:51 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 959BBC385A4; Sun, 10 Apr 2022 01:25:48 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1649553949; bh=dhIKRfQnFR0J7ifWqm1AfWCZSimVYan34JlaRiuG5gk=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=Gl8grT+E7Bh2+swwuot6Yb4Fv0Oq57woE7eSlngyVMCTShZmT2ZC224sA6KNiyzX5 eLgsMR17gN9FqMw4XvTBFRMfUJfasnI4oesc15LYQiCp6+TkYOkG0CLtAUmTIVDQPs P6XNxXZxrLUb7YKSdyGxpWD2dh9MIeuwI12qXGyJwWLhxEdYaUIA5y1xwU7V7X7sES mnIwXGhu4XRjy+ZDVuRuZL8yTeaIFIAPlqhLL2x1wCuolE4bT2g++fPM8DD0rVpkSQ 1wgmkIL4NHJ2KGw+RT8tK66PqEJM8HKwWIt0PaffRhX1v+x84Ou+Wtyf7vpG4KbprX twF3BH51eLQiA== Date: Sun, 10 Apr 2022 09:25:43 +0800 From: Shawn Guo To: Li Yang Cc: Rob Herring , Biwen Li , linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH 5/6] arm64: dts: ls208xa-rdb: fix errata E-00013 Message-ID: <20220410012543.GJ129381@dragon> References: <20220317190109.3742-1-leoyang.li@nxp.com> <20220317190109.3742-5-leoyang.li@nxp.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20220317190109.3742-5-leoyang.li@nxp.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220409_182553_163736_5E46A3E4 X-CRM114-Status: GOOD ( 17.52 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Thu, Mar 17, 2022 at 02:01:08PM -0500, Li Yang wrote: > From: Biwen Li > > Specify a channel zero in idle state to > avoid enterring tri-stated state for PCA9547. Please check Documentation/process/submitting-patches.rst for commit log wrapping requirement. > About E-00013: > - Description: I2C1 and I2C3 buses Use space instead of tab for bullet indent. Shawn > are missing pull-up. > - Impact: When the PCA954x device is tri-stated, the I2C bus > will float. This makes the I2C bus and its associated > downstream devices inaccessible. > - Hardware fix: Populate resistors R189 and R190 for I2C1 > and resistors R228 and R229 for I2C3. > - Software fix: Remove the tri-state option from the PCA954x > driver(PCA954x always on enable status, specify a > channel zero in dts to fix the errata E-00013). > > Signed-off-by: Biwen Li > Signed-off-by: Li Yang > --- > arch/arm64/boot/dts/freescale/fsl-ls208xa-rdb.dtsi | 2 ++ > 1 file changed, 2 insertions(+) > > diff --git a/arch/arm64/boot/dts/freescale/fsl-ls208xa-rdb.dtsi b/arch/arm64/boot/dts/freescale/fsl-ls208xa-rdb.dtsi > index 4b71c4fcb35f..a752f06a2e74 100644 > --- a/arch/arm64/boot/dts/freescale/fsl-ls208xa-rdb.dtsi > +++ b/arch/arm64/boot/dts/freescale/fsl-ls208xa-rdb.dtsi > @@ -49,6 +49,8 @@ pca9547@75 { > reg = <0x75>; > #address-cells = <1>; > #size-cells = <0>; > + idle-state = <0>; > + > i2c@1 { > #address-cells = <1>; > #size-cells = <0>; > -- > 2.25.1 > _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel