From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932846AbeDXDCj (ORCPT ); Mon, 23 Apr 2018 23:02:39 -0400 Received: from mga04.intel.com ([192.55.52.120]:21474 "EHLO mga04.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932753AbeDXDCe (ORCPT ); Mon, 23 Apr 2018 23:02:34 -0400 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.49,320,1520924400"; d="scan'208";a="34126504" From: "Ooi, Joyce" To: Dinh Nguyen , Rob Herring , Mark Rutland , Catalin Marinas , Will Deacon Cc: devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Ooi Joyce , See Chin Liang , Yves Vandervennet , Ong Hean Loong Subject: [PATCH] arm64: dts: stratix10: Change pad skew values for EMAC0 PHY driver Date: Tue, 24 Apr 2018 11:01:58 +0800 Message-Id: <1524538918-21141-1-git-send-email-joyce.ooi@intel.com> X-Mailer: git-send-email 1.9.1 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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. Signed-off-by: Ooi, Joyce --- .../boot/dts/altera/socfpga_stratix10_socdk.dts | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/arch/arm64/boot/dts/altera/socfpga_stratix10_socdk.dts b/arch/arm64/boot/dts/altera/socfpga_stratix10_socdk.dts index 0007564..8785f78 100644 --- a/arch/arm64/boot/dts/altera/socfpga_stratix10_socdk.dts +++ b/arch/arm64/boot/dts/altera/socfpga_stratix10_socdk.dts @@ -79,7 +79,7 @@ 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 */ }; -- 1.7.1