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[23.128.96.18]) by mx.google.com with ESMTP id aq7si11253006ejc.285.2021.06.14.03.34.34; Mon, 14 Jun 2021 03:34:57 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; dkim=pass header.i=@linuxfoundation.org header.s=korg header.b=KjF8vdps; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=linuxfoundation.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233129AbhFNKev (ORCPT + 99 others); Mon, 14 Jun 2021 06:34:51 -0400 Received: from mail.kernel.org ([198.145.29.99]:39532 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233055AbhFNKcw (ORCPT ); Mon, 14 Jun 2021 06:32:52 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id EFA5E611C1; Mon, 14 Jun 2021 10:30:36 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1623666637; bh=Wxtvq9eHMKPN54ne+ZQrK/BlFetohqLhABaJbiMUsWE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=KjF8vdpswRaxI0uP2sqdgH0Dc+IdaneHCovxo417zmuspHRpSE7Pcmwbbe+6kFjHU j7ZHAGvGPsE0YLFPoaJoRmB6T1OURC1kCFAge42YRubNeWzk6LD8XqPAxZR2HJk9QL OgdK99L7autHTtUta29T8lVjRzyJkRnlV65fypJA= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Chris Packham , Michael Ellerman , Wolfram Sang , Sasha Levin Subject: [PATCH 4.9 17/42] powerpc/fsl: set fsl,i2c-erratum-a004447 flag for P2041 i2c controllers Date: Mon, 14 Jun 2021 12:27:08 +0200 Message-Id: <20210614102643.252875772@linuxfoundation.org> X-Mailer: git-send-email 2.32.0 In-Reply-To: <20210614102642.700712386@linuxfoundation.org> References: <20210614102642.700712386@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Chris Packham [ Upstream commit 7adc7b225cddcfd0f346d10144fd7a3d3d9f9ea7 ] The i2c controllers on the P2040/P2041 have an erratum where the documented scheme for i2c bus recovery will not work (A-004447). A different mechanism is needed which is documented in the P2040 Chip Errata Rev Q (latest available at the time of writing). Signed-off-by: Chris Packham Acked-by: Michael Ellerman Signed-off-by: Wolfram Sang Signed-off-by: Sasha Levin --- arch/powerpc/boot/dts/fsl/p2041si-post.dtsi | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) diff --git a/arch/powerpc/boot/dts/fsl/p2041si-post.dtsi b/arch/powerpc/boot/dts/fsl/p2041si-post.dtsi index 51e975d7631a..8921f17fca42 100644 --- a/arch/powerpc/boot/dts/fsl/p2041si-post.dtsi +++ b/arch/powerpc/boot/dts/fsl/p2041si-post.dtsi @@ -389,7 +389,23 @@ }; /include/ "qoriq-i2c-0.dtsi" + i2c@118000 { + fsl,i2c-erratum-a004447; + }; + + i2c@118100 { + fsl,i2c-erratum-a004447; + }; + /include/ "qoriq-i2c-1.dtsi" + i2c@119000 { + fsl,i2c-erratum-a004447; + }; + + i2c@119100 { + fsl,i2c-erratum-a004447; + }; + /include/ "qoriq-duart-0.dtsi" /include/ "qoriq-duart-1.dtsi" /include/ "qoriq-gpio-0.dtsi" -- 2.30.2