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=-9.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham 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 13610C43215 for ; Tue, 19 Nov 2019 05:26:38 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id CD7F521823 for ; Tue, 19 Nov 2019 05:26:37 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1574141197; bh=W6uN9xHq7HGKDzwyHjCpDmU5tv6iPNN8Hw2AZv3Xizw=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=lBuv4SAzZYcak3nC5m2FrN/njwL8r3Z+07XMau1WzbZI9BoGUyImlf6Y2OOMQXikg w8JXA1/KEYHBYXfrm1qROVYc49PONRLemp+sqlhMZdA3qzKxEz0EWa64Jc0lxJpqMl 7sAh7bPvNZui1e1tB+wZ5N7txaLUQq99/xwIUj/U= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728591AbfKSF0g (ORCPT ); Tue, 19 Nov 2019 00:26:36 -0500 Received: from mail.kernel.org ([198.145.29.99]:44636 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727987AbfKSF0d (ORCPT ); Tue, 19 Nov 2019 00:26:33 -0500 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 5909B222ED; Tue, 19 Nov 2019 05:26:32 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1574141192; bh=W6uN9xHq7HGKDzwyHjCpDmU5tv6iPNN8Hw2AZv3Xizw=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=RZH0kTsXQ4Jnw8T9RR19AnotKnzUgtBDjsbD62IxUcekgrBwm05GMT+u4qCQFimGo uwASkd1OYEGBGuy2mvrg1icx8Vb+UvFDh/2E8+fjFM+Bo8gLnEucHeg9b5Ex5knbYF X9zF5cb+26Tj6Iymae5mqO5nz1mOsRIz3F9rv9Vs= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Alan Tull , Dinh Nguyen , Sasha Levin Subject: [PATCH 4.19 076/422] arm64: dts: stratix10: i2c clock running out of spec Date: Tue, 19 Nov 2019 06:14:33 +0100 Message-Id: <20191119051404.470539070@linuxfoundation.org> X-Mailer: git-send-email 2.24.0 In-Reply-To: <20191119051400.261610025@linuxfoundation.org> References: <20191119051400.261610025@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@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