From patchwork Fri Apr 27 04:25:18 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Masahiro Yamada X-Patchwork-Id: 134554 Delivered-To: patch@linaro.org Received: by 10.46.151.6 with SMTP id r6csp255413lji; Thu, 26 Apr 2018 21:26:19 -0700 (PDT) X-Google-Smtp-Source: AB8JxZoLXxFMMVTa+nVjB60UqfgtvDtol+FOyW/PRPLeQWTGyTt8kpWuTOmI0A65sLVWFkMhw8Qk X-Received: by 2002:a63:41c5:: with SMTP id o188-v6mr730216pga.7.1524803179504; Thu, 26 Apr 2018 21:26:19 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1524803179; cv=none; d=google.com; s=arc-20160816; b=ev0r3NQ55TcBYKextXHmyD4f5IvCCX3t0wynLaI/YJYb4ND+Ae2VRUU3ipuf1TLff4 T6L3jpl4IxB+MmNKsxiYS8hCtBn8MjcrWgF6AoDwb6o5RL5pNHU1GUJJV7qDeGkAdDaa cWk6Sdw3FfjqN9iUzSTgE74ou23EwxYXL11/M0LVHSXzLV/om+72ZV/8cDMvSNFah+gG TKVTS+Y4nJp+vUcAJj678gIBbBVt3UZ1Ubxxb6gMSFkCM/zT7sCPgpYIzINYyd1lzhHx eo4gs6X30ESh/yq2gGni0JqcWO/DD4RUcu9ioc0s4ZTKImozu9f6iR09omm+TRD4Wki0 kkdQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:message-id:date:subject:cc:to:from :dkim-signature:dkim-filter:arc-authentication-results; bh=eCCEFet9MybZn81nALPKcG+WZWN4rBSVktZNQFCDvGA=; b=p5O4oRcJoP9LHubR5b0rS8yj/BFtLzuDMEVP6LGxNBiLvGjuyf+LQhACXceWVhfwK6 VF8qIJfXxsNJPQC3MSFHcroqlqoBbnRRyN/vxP4d1aU0VLrvG2Eo24QKKGuD8SuIp0M5 LYFspCvGTw9aytxY5iUY7ZCTjTXm8wz8c7ibqe7m//9irK1/6uDwmLzy+KTPp/IQzTAW +ump55WVSVZeiVT5J3M9Fj0CQykIdHXOl5u9CzewHNI61xNZfiJixRnRKEh+UzVnkPRd wG0Jn1UYUaGxVi2NjtLxrvL6hraN8yydBm/zndf/PsvluqInaezDehb4JQsKLW/p6FDb McCA== ARC-Authentication-Results: i=1; mx.google.com; dkim=neutral (body hash did not verify) header.i=@nifty.com header.s=dec2015msa header.b=j+U7UYCi; spf=pass (google.com: best guess record for domain of devicetree-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=devicetree-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id n2-v6si454904pga.202.2018.04.26.21.26.19; Thu, 26 Apr 2018 21:26:19 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of devicetree-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; dkim=neutral (body hash did not verify) header.i=@nifty.com header.s=dec2015msa header.b=j+U7UYCi; spf=pass (google.com: best guess record for domain of devicetree-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=devicetree-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1750863AbeD0E0R (ORCPT + 6 others); Fri, 27 Apr 2018 00:26:17 -0400 Received: from conuserg-07.nifty.com ([210.131.2.74]:64821 "EHLO conuserg-07.nifty.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750759AbeD0E0Q (ORCPT ); Fri, 27 Apr 2018 00:26:16 -0400 Received: from pug.e01.socionext.com (p14092-ipngnfx01kyoto.kyoto.ocn.ne.jp [153.142.97.92]) (authenticated) by conuserg-07.nifty.com with ESMTP id w3R4PNfq018997; Fri, 27 Apr 2018 13:25:23 +0900 DKIM-Filter: OpenDKIM Filter v2.10.3 conuserg-07.nifty.com w3R4PNfq018997 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=nifty.com; s=dec2015msa; t=1524803124; bh=tIMUmBZ+yk8zWio2s2T69R5pdJJc+lwnP+zp4Yb9dWw=; h=From:To:Cc:Subject:Date:From; b=j+U7UYCiq3CV1UUAEiju0ImueL7/okTG9t5+in6nOfuV6LZypuJQqYQg90S0JXXpD HLWMXFURoFRrZIjmUtlADHCYX4umo+bHW0B4VbUM957RiOvTGGDmPa8lh/DZdqIM3r 0ExeEOYRe+ljj/1AkBj8hsCbd+AjI4VuEQ2o0lZ5IWMC+ygI7J2ssN+9TMI/SphWwo Td5vUS06cLIlTN2XM/kftfpbQMVHcMrwGAmtgn553mKaQFBamlbJtKzG4LsnXLJcM3 szV/JzF0N0oSnf3apLH1Teajo/h1wtmaJYVX1WlOOu2+9ebNz/t2t+R8V9/Zf4amOF AGnqWqhMoTaoQ== X-Nifty-SrcIP: [153.142.97.92] From: Masahiro Yamada To: linux-arm-kernel@lists.infradead.org Cc: Masami Hiramatsu , Jassi Brar , Kunihiko Hayashi , Masahiro Yamada , devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Rob Herring , Will Deacon , Mark Rutland , Catalin Marinas Subject: [PATCH] arm64: dts: uniphier: stabilize ethernet of LD20 reference boar Date: Fri, 27 Apr 2018 13:25:18 +0900 Message-Id: <1524803118-32570-1-git-send-email-yamada.masahiro@socionext.com> X-Mailer: git-send-email 2.7.4 Sender: devicetree-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org Currently, the ethernet RGMII mode on the LD20 reference board is unstable. The default drive-strength of ethernet TX pins is too strong because there is no dumping resistor on the TX lines on the board. Weaken the drive-strength to make the ethernet more stable. Signed-off-by: Masahiro Yamada --- arch/arm64/boot/dts/socionext/uniphier-ld20-ref.dts | 8 ++++++++ 1 file changed, 8 insertions(+) -- 2.7.4 -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html diff --git a/arch/arm64/boot/dts/socionext/uniphier-ld20-ref.dts b/arch/arm64/boot/dts/socionext/uniphier-ld20-ref.dts index 2c1a92f..440c2e6 100644 --- a/arch/arm64/boot/dts/socionext/uniphier-ld20-ref.dts +++ b/arch/arm64/boot/dts/socionext/uniphier-ld20-ref.dts @@ -67,3 +67,11 @@ reg = <0>; }; }; + +&pinctrl_ether_rgmii { + tx { + pins = "RGMII_TXCLK", "RGMII_TXD0", "RGMII_TXD1", + "RGMII_TXD2", "RGMII_TXD3", "RGMII_TXCTL"; + drive-strength = <9>; + }; +};