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=-10.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, 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 A30E4FC6196 for ; Fri, 8 Nov 2019 12:12:26 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 70E09206A3 for ; Fri, 8 Nov 2019 12:12:26 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1573215146; bh=W6uN9xHq7HGKDzwyHjCpDmU5tv6iPNN8Hw2AZv3Xizw=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=Dl6qxPFWnyoO3+mV5MHyxeifyBHILwGgllXUUhBgPER2I1HxEupIWscxVsA2ZmZIM GSsUYbY8lDdyOkh4EuUS98hkF47SxDpnf96lViJG847x55sHldss+8h//JhyITmHQL IQHVBvyXX2AcuWSaU9aNeNB95CH+ymrROy3NVkTA= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1732861AbfKHLir (ORCPT ); Fri, 8 Nov 2019 06:38:47 -0500 Received: from mail.kernel.org ([198.145.29.99]:51744 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1732846AbfKHLip (ORCPT ); Fri, 8 Nov 2019 06:38:45 -0500 Received: from sasha-vm.mshome.net (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id B1CE7222C2; Fri, 8 Nov 2019 11:38:44 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1573213125; bh=W6uN9xHq7HGKDzwyHjCpDmU5tv6iPNN8Hw2AZv3Xizw=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=zLLRUHcAX+KJ8SNb7iOrcrDgdbPYe2wV8p1J0eWfiu1fr5rUn/Qg2o6lXkDNaksIc +ICsNPTmC9YIDJqvNiJb/Vzk9n8Aoc6LhFugukCuDiHqMj1kGJVG2dp3UWrRcKfupI itTUeoMLJHjjW6mEgPuCshQIus9Ld5fsvIpzJRyI= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Alan Tull , Dinh Nguyen , Sasha Levin , devicetree@vger.kernel.org Subject: [PATCH AUTOSEL 4.19 044/205] arm64: dts: stratix10: i2c clock running out of spec Date: Fri, 8 Nov 2019 06:35:11 -0500 Message-Id: <20191108113752.12502-44-sashal@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20191108113752.12502-1-sashal@kernel.org> References: <20191108113752.12502-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Alan Tull [ Upstream commit c8da1d15b8a4957f105ad77bb1404d72e304566f ] DesignWare I2C controller was observed running at 105.93kHz rather than the specified 100kHz. Adjust device tree settings to bring it within spec (a slightly conservative 98 MHz). Signed-off-by: Alan Tull Signed-off-by: Dinh Nguyen Signed-off-by: Sasha Levin --- arch/arm64/boot/dts/altera/socfpga_stratix10_socdk.dts | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/arm64/boot/dts/altera/socfpga_stratix10_socdk.dts b/arch/arm64/boot/dts/altera/socfpga_stratix10_socdk.dts index 7c661753bfaf4..faa017d4cd56b 100644 --- a/arch/arm64/boot/dts/altera/socfpga_stratix10_socdk.dts +++ b/arch/arm64/boot/dts/altera/socfpga_stratix10_socdk.dts @@ -124,6 +124,8 @@ &i2c1 { status = "okay"; clock-frequency = <100000>; + i2c-sda-falling-time-ns = <890>; /* hcnt */ + i2c-sdl-falling-time-ns = <890>; /* lcnt */ adc@14 { compatible = "lltc,ltc2497"; -- 2.20.1