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=-5.5 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_PASS,URIBL_BLOCKED, USER_AGENT_MUTT 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 A5A66C282C2 for ; Mon, 11 Feb 2019 02:37:03 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 759F32083B for ; Mon, 11 Feb 2019 02:37:03 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="ihAVW16z"; dkim=fail reason="signature verification failed" (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="nCmUwJhJ" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 759F32083B Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:References: Message-ID:Subject:To:From:Date:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=0HrswhOm/xOgo3UfBCOMg0WrorE5J8Z7EHy80whNzeM=; b=ihAVW16ze7AafH yj5M56eJrNFJkVB3DOuqtxlA98F/CuxAtq5yLdRWgTWk48HQuDZvr5Nk87XAtYeXP2tkceFuE3rDG 2fKtcrrTzA6wQ9t9dxw5K3k//A285hVByHO7CMsRfOJQcjc5rkzjZdKMtmUTItv2nNrv2mDh9PLPr uaZ/e6Jk2wTFH01xDsv0tpemFhXsYUswXSpXU8oZJ6bCxg3Ijt7hOt6obTxDu7gMD+3ZuexhXnJ/V YKVqnNLQjwGYLeU4MX1kS0bQdqF7JDC1epfrJSI/kNsWuGT20qha5eL+NB6emQujkCe0sAfZNL1cS YM/nn+hILcrQugz3E3QA==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1gt1Sp-0005PN-Nn; Mon, 11 Feb 2019 02:36:55 +0000 Received: from mail.kernel.org ([198.145.29.99]) by bombadil.infradead.org with esmtps (Exim 4.90_1 #2 (Red Hat Linux)) id 1gt1Sm-0005Oq-Ff for linux-arm-kernel@lists.infradead.org; Mon, 11 Feb 2019 02:36:53 +0000 Received: from dragon (61-216-91-114.HINET-IP.hinet.net [61.216.91.114]) (using TLSv1.2 with cipher DHE-RSA-AES128-SHA (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 10A8C2083B; Mon, 11 Feb 2019 02:36:48 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1549852612; bh=2yBpgdo0Oz+tj4swbvHeUuGBYi1l1EVhMhrcheheBAA=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=nCmUwJhJqS7lwCQR9JVV+vEwCVlUtbS1molJIz0OtV7wEGinjIBcduMyS+AxfSV17 3br6gAHjeiXFgYCpzAsuw6Wjlopery5XIPrFcPZSGvbu/5wShjN1aimq+U7U5QvA7F LNJ5ntvN1zI5e8WTswWS7mlIkaYP9qKbrT9u4GAA= Date: Mon, 11 Feb 2019 10:36:40 +0800 From: Shawn Guo To: Marco Felsch Subject: Re: [PATCH 2/2] ARM: dts: pfla02: add ksz9031 clock skew values Message-ID: <20190211023639.GG22487@dragon> References: <20190204152956.13471-1-m.felsch@pengutronix.de> <20190204152956.13471-2-m.felsch@pengutronix.de> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20190204152956.13471-2-m.felsch@pengutronix.de> User-Agent: Mutt/1.5.21 (2010-09-15) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190210_183652_538071_BAB31FD4 X-CRM114-Status: GOOD ( 12.54 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: devicetree@vger.kernel.org, Philipp Zabel , robh+dt@kernel.org, linux-imx@nxp.com, kernel@pengutronix.de, c.hemp@phytec.de, fabio.estevam@nxp.com, linux-arm-kernel@lists.infradead.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Mon, Feb 04, 2019 at 04:29:56PM +0100, Marco Felsch wrote: > From: Philipp Zabel > > The pfla02 SoM has a Micrel KSZ9031RNX ethernet phy connected to the FEC, > which needs RX and TX clock skew settings to compensate for differences > in line length. The skew values are taken from barebox commit > 4c65c20f1071 ("ARM: pfla02: Set new ethernet phy tx timings"), which > is based on patches originally provided by Phytec: > > TX_CLK line is approx. 54mm longer than other TX lines which adds > a delay of 0.36ns. RGMII need a delay of min. 1.0ns. This mean we > have to add a delay of 0.64ns. We choose 0.78 to have a little gap. > This can be done by setting GTX pad skew value to 11100 > Also add a delay for the RX delay lines, needed for the Duallite > variant. => Set register 2.8 (RGMII Clock Pad Skew) to 0x039F. > > Cc: Christian Hemp > Signed-off-by: Philipp Zabel > Signed-off-by: Marco Felsch Applied, thanks. _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel