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=-19.4 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable 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 19C07C47096 for ; Thu, 3 Jun 2021 17:18:40 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 021EE613DC for ; Thu, 3 Jun 2021 17:18:39 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232750AbhFCRUX (ORCPT ); Thu, 3 Jun 2021 13:20:23 -0400 Received: from mail.kernel.org ([198.145.29.99]:50066 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233406AbhFCRQ4 (ORCPT ); Thu, 3 Jun 2021 13:16:56 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id BD6BC6144A; Thu, 3 Jun 2021 17:11:31 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1622740292; bh=DlRPQKg57hZnvopmZek5Qh2qaefReJ5UVZdEQVMp8F8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=PD8GYQzOXa5ejYyVjtGdq8GNkqkPiXyuhGUrelG2DVajnhUoSD4VvCUPcX9+DpomI 4RjFoD9rpsBZej/Gsoxrsd7ul7A6S7/HphGM8Xab82cczbJ2ohmtPyDELgzS7WZioq 5Nq/J3BgFZtPDKL8zyBXDoD1N4tSKmoQ3qZ0l9GCMm2E41CXgI/SXyPW96CIz917Ti hkuPKrwtwWweULE53CV7yiEvW1+ELW4eW99onB5N0DXwSivv+jIccF4tJNiXK2mIMB z6XiXJB6GU+8SA/5XKpFxyyRtgx58GdWGDdm7k3UVFkXlyzF+6UJoX/OQ0fYALDUIn 2CHsRLOJwEDqw== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Chris Packham , Michael Ellerman , Wolfram Sang , Sasha Levin , devicetree@vger.kernel.org, linuxppc-dev@lists.ozlabs.org Subject: [PATCH AUTOSEL 4.4 14/15] powerpc/fsl: set fsl,i2c-erratum-a004447 flag for P2041 i2c controllers Date: Thu, 3 Jun 2021 13:11:13 -0400 Message-Id: <20210603171114.3170086-14-sashal@kernel.org> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20210603171114.3170086-1-sashal@kernel.org> References: <20210603171114.3170086-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore 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 @@ sdhc@114000 { }; /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