From patchwork Tue May 4 14:41:24 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Geert Uytterhoeven X-Patchwork-Id: 12238153 X-Patchwork-Delegate: geert@linux-m68k.org 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=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,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 EEB3EC433B4 for ; Tue, 4 May 2021 14:41:29 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id C4E8A613B4 for ; Tue, 4 May 2021 14:41:29 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231448AbhEDOmY (ORCPT ); Tue, 4 May 2021 10:42:24 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:60854 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230307AbhEDOmX (ORCPT ); Tue, 4 May 2021 10:42:23 -0400 Received: from albert.telenet-ops.be (albert.telenet-ops.be [IPv6:2a02:1800:110:4::f00:1a]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id F1209C061574 for ; Tue, 4 May 2021 07:41:28 -0700 (PDT) Received: from ramsan.of.borg ([IPv6:2a02:1810:ac12:ed20:1ca1:e52f:3ec5:3ac5]) by albert.telenet-ops.be with bizsmtp id 0ehT2500B3aEpPb06ehT2W; Tue, 04 May 2021 16:41:27 +0200 Received: from rox.of.borg ([192.168.97.57]) by ramsan.of.borg with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.93) (envelope-from ) id 1ldwEo-002nqk-TE; Tue, 04 May 2021 16:41:26 +0200 Received: from geert by rox.of.borg with local (Exim 4.93) (envelope-from ) id 1ldwEo-00HQGe-DL; Tue, 04 May 2021 16:41:26 +0200 From: Geert Uytterhoeven To: Magnus Damm , Wolfram Sang Cc: linux-renesas-soc@vger.kernel.org, Geert Uytterhoeven Subject: [PATCH/RFC 1/2] ARM: dts: r8a7778: Correct internal delay for i2c[123] Date: Tue, 4 May 2021 16:41:24 +0200 Message-Id: <1eac63f15a776e492ff8a2d8447c5e1019982dd1.1620138979.git.geert+renesas@glider.be> X-Mailer: git-send-email 2.25.1 In-Reply-To: References: MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-renesas-soc@vger.kernel.org According to the R-Car M1A Hardware User's Manual Rev. 1.00, the LSI internal delay for I2C instances 1 to 3 is 5 ns (typ.), which differs from the default 50 ns as specified for instance 0. Signed-off-by: Geert Uytterhoeven Reviewed-by: Wolfram Sang --- i2c[123] are not used in upstream DTS files. --- arch/arm/boot/dts/r8a7778.dtsi | 3 +++ 1 file changed, 3 insertions(+) diff --git a/arch/arm/boot/dts/r8a7778.dtsi b/arch/arm/boot/dts/r8a7778.dtsi index c9f8735860bf824c..95efbafb0b7077a2 100644 --- a/arch/arm/boot/dts/r8a7778.dtsi +++ b/arch/arm/boot/dts/r8a7778.dtsi @@ -166,6 +166,7 @@ i2c1: i2c@ffc71000 { interrupts = ; clocks = <&mstp0_clks R8A7778_CLK_I2C1>; power-domains = <&cpg_clocks>; + i2c-scl-internal-delay-ns = <5>; status = "disabled"; }; @@ -177,6 +178,7 @@ i2c2: i2c@ffc72000 { interrupts = ; clocks = <&mstp0_clks R8A7778_CLK_I2C2>; power-domains = <&cpg_clocks>; + i2c-scl-internal-delay-ns = <5>; status = "disabled"; }; @@ -188,6 +190,7 @@ i2c3: i2c@ffc73000 { interrupts = ; clocks = <&mstp0_clks R8A7778_CLK_I2C3>; power-domains = <&cpg_clocks>; + i2c-scl-internal-delay-ns = <5>; status = "disabled"; };