From patchwork Thu Nov 21 14:48:56 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Joyce Ooi X-Patchwork-Id: 1198990 X-Patchwork-Delegate: simon.k.r.goldschmidt@gmail.com Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=none (no SPF record) smtp.mailfrom=lists.denx.de (client-ip=81.169.180.215; helo=lists.denx.de; envelope-from=u-boot-bounces@lists.denx.de; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=intel.com Received: from lists.denx.de (dione.denx.de [81.169.180.215]) by ozlabs.org (Postfix) with ESMTP id 47JjBK5NHZz9sPv for ; Fri, 22 Nov 2019 01:49:13 +1100 (AEDT) Received: by lists.denx.de (Postfix, from userid 105) id 67B4DC21F79; Thu, 21 Nov 2019 14:49:11 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on lists.denx.de X-Spam-Level: X-Spam-Status: No, score=0.0 required=5.0 tests=none autolearn=unavailable autolearn_force=no version=3.4.0 Received: from lists.denx.de (localhost [IPv6:::1]) by lists.denx.de (Postfix) with ESMTP id 26151C21E35; Thu, 21 Nov 2019 14:49:08 +0000 (UTC) Received: by lists.denx.de (Postfix, from userid 105) id 4EFD4C21E35; Thu, 21 Nov 2019 14:49:07 +0000 (UTC) Received: from mga03.intel.com (mga03.intel.com [134.134.136.65]) by lists.denx.de (Postfix) with ESMTPS id 85661C21DFD for ; Thu, 21 Nov 2019 14:49:06 +0000 (UTC) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga006.jf.intel.com ([10.7.209.51]) by orsmga103.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 21 Nov 2019 06:49:04 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.69,226,1571727600"; d="scan'208";a="210113581" Received: from joyceboo-mobl4.gar.corp.intel.com (HELO ubuntu.localdomain) ([10.249.64.105]) by orsmga006.jf.intel.com with ESMTP; 21 Nov 2019 06:49:03 -0800 From: "Ooi, Joyce" To: Ley Foon Tan , Chee Hong Ang Date: Thu, 21 Nov 2019 06:48:56 -0800 Message-Id: <1574347736-14222-1-git-send-email-joyce.ooi@intel.com> X-Mailer: git-send-email 1.9.1 Cc: u-boot@lists.denx.de Subject: [U-Boot] [PATCH] arm: dts: Stratix10: change pad skew values for EMAC0 PHY driver X-BeenThere: u-boot@lists.denx.de X-Mailman-Version: 2.1.18 Precedence: list List-Id: U-Boot discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Errors-To: u-boot-bounces@lists.denx.de Sender: "U-Boot" The HPS EMAC0 drive strength is changed to 4mA because the initial 8mA drive strength has caused CE test to fail. This requires changes on the pad skew for EMAC0 PHY driver. Based on several measurements done, Tx clock does not require the extra 0.96ns delay which was needed in Arria10. Signed-off-by: Ooi, Joyce Reviewed-by: Ley Foon Tan --- arch/arm/dts/socfpga_stratix10_socdk.dts | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm/dts/socfpga_stratix10_socdk.dts b/arch/arm/dts/socfpga_stratix10_socdk.dts index 8c7b422..b7b48a5 100755 --- a/arch/arm/dts/socfpga_stratix10_socdk.dts +++ b/arch/arm/dts/socfpga_stratix10_socdk.dts @@ -74,7 +74,7 @@ rxd2-skew-ps = <420>; /* 0ps */ rxd3-skew-ps = <420>; /* 0ps */ txen-skew-ps = <0>; /* -420ps */ - txc-skew-ps = <1860>; /* 960ps */ + txc-skew-ps = <900>; /* 0ps */ rxdv-skew-ps = <420>; /* 0ps */ rxc-skew-ps = <1680>; /* 780ps */ };