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=-8.5 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,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 E469BC282CE for ; Mon, 8 Apr 2019 08:41:54 +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 B51B12146E for ; Mon, 8 Apr 2019 08:41:54 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="qpvywn/7" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org B51B12146E Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=the-dreams.de 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-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-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=VRY1iSHsjHk5eBpTMAn9DCXKEE/5qdARbnrQqUVXZLA=; b=qpvywn/7UqqnE+S/0XhF2+h+0 WaHgR6f1dTRkUcsb7+UI5OuVKKaARCLGIdJ69QmcEnLvlxx9Li26wVDAddsrlNjws/8ApUJ6muDr7 mBCpnSkDPC+xc2WfygXEe5vwtBCQ0jALqlWm/IybGTxXeVopG9l1u8VF+ZqvCDTXng0UgnMr3H6YW /j8Es9QWKEnxld/yprnJU1/XSQ9VRbgxxFxsU7TEZ2URyOcQ51vGUIxRdIrFKP4HvnSI410MhxRyV 6yb/rc1OlLS/0YfG+Gxds4sgcP/hIqHQJskIK0XAwrWic0p4ndoDNcuIoop9YrT9eKxZDRndcPbmX 0ptzEAXUw==; 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 1hDPqg-0003JS-W5; Mon, 08 Apr 2019 08:41:50 +0000 Received: from sauhun.de ([88.99.104.3] helo=pokefinder.org) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1hDPqd-0003J4-CT for linux-arm-kernel@lists.infradead.org; Mon, 08 Apr 2019 08:41:49 +0000 Received: from localhost (p54B335C3.dip0.t-ipconnect.de [84.179.53.195]) by pokefinder.org (Postfix) with ESMTPSA id F1E654A134D; Mon, 8 Apr 2019 10:41:43 +0200 (CEST) Date: Mon, 8 Apr 2019 10:41:43 +0200 From: Wolfram Sang To: Simon Horman Subject: Re: [PATCH/RFC] arm64: dts: renesas: ebisu, draak: Limit EtherAVB to 100Mbps Message-ID: <20190408084143.GA1615@kunai> References: <20190408083148.23134-1-horms+renesas@verge.net.au> MIME-Version: 1.0 In-Reply-To: <20190408083148.23134-1-horms+renesas@verge.net.au> User-Agent: Mutt/1.10.1 (2018-07-13) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190408_014147_576567_2796DBDC X-CRM114-Status: GOOD ( 14.56 ) 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: Sergei Shtylyov , Yoshihiro Shimoda , Magnus Damm , linux-renesas-soc@vger.kernel.org, Wolfram Sang , linux-arm-kernel@lists.infradead.org Content-Type: multipart/mixed; boundary="===============8496289232008483241==" Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org --===============8496289232008483241== Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="a8Wt8u1KmwUX3Y2C" Content-Disposition: inline --a8Wt8u1KmwUX3Y2C Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable Hi Simon, On Mon, Apr 08, 2019 at 10:31:48AM +0200, Simon Horman wrote: > * According to the R-Car Gen3 Hardware Manual Errata for Rev 1.00 of > August 24, 2018, the TX clock internal delay mode isn't supported > on R-Car E3 (r8a77990) and D3 (r8a77995). >=20 > * TX clock internal delay mode is required for reliable 1Gbps communicati= on > using the KSZ9031RNX phy present on the Ebisu and Draak boards. >=20 > Thus, the E3 based Ebisu and D3 based Draak boards reliably use 1Gbps and > the speed should be limited to 100Mbps. "cannot" missing? > Based on work by Kazuya Mizuguchi. >=20 > Signed-off-by: Simon Horman > --- > arch/arm64/boot/dts/renesas/r8a77990-ebisu.dts | 1 + > arch/arm64/boot/dts/renesas/r8a77995-draak.dts | 1 + > 2 files changed, 2 insertions(+) >=20 > Based on renesas-devel-20190404-v5.1-rc3 >=20 > diff --git a/arch/arm64/boot/dts/renesas/r8a77990-ebisu.dts b/arch/arm64/= boot/dts/renesas/r8a77990-ebisu.dts > index c72772589953..05214b8dd2c5 100644 > --- a/arch/arm64/boot/dts/renesas/r8a77990-ebisu.dts > +++ b/arch/arm64/boot/dts/renesas/r8a77990-ebisu.dts > @@ -272,6 +272,7 @@ > interrupt-parent =3D <&gpio2>; > interrupts =3D <21 IRQ_TYPE_LEVEL_LOW>; > reset-gpios =3D <&gpio1 20 GPIO_ACTIVE_LOW>; > + max-speed =3D <100>; What about adding a comment explaining this speed limit? Thanks, Wolfram --a8Wt8u1KmwUX3Y2C Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEOZGx6rniZ1Gk92RdFA3kzBSgKbYFAlyrCUMACgkQFA3kzBSg KbbWDA//fLRfV7qk/zfY9LCpWoZmMA/QUAS7J7myt2N4ObHF1ktns05Ygbf7JD0Y A40y6KKPe0tCxXZgQMKLIvv3lyvayXcIDZFDVPJnGiBzhV6DRQSib5Y+CKZaADnm dcXy9uv6sx2sXDhjLcQOtBNflPmUdOa7FgOqoYucdkd3a+tOXyjZdhVnqiYxMfor ziivYmmHFfNCKFPb1uW4N6Ptkq57mAU+dNV3A174oKFrx4Libj0IaVVIObXExpfK vam1jpwHZZStQNXAWhbfmuaDUz6gco4GxKCHae/mGfjghHej+ymrFX09GuKPG/XR dmf8s1pNDprsenZ9jQ0uJDjEJuyiaIRQ8LByb0RDOUc0jvss0jgST8ZhsKCsnkcM gG2LAFhn1jogDZScb8VjpMmMNRHDw9QjKFldcr6lGv9ORp26KzjahchhaGKjqAWX /4flEUEZq++5LinfuTOQ5tAwnz0Yh5SgXYD00a304tCRTy6hx3p9yCkiF56GH3OE SzJInAvpj0PPghZRxQHg3FxpgIK0tPhjFXUvgqscpgmUp/2SYcJUSpjpj2bBg4ks NVJRyQifrRXQ03dlMJNGfY/r/6uDds43WRnfCBGO8qCiFSFRv3uuLjQy2RoPEfXt V4OrBWcPWn9sG212phy5Bttr6tKpW+OuJb0LwIYZCDxZkfBw8wk= =FbDl -----END PGP SIGNATURE----- --a8Wt8u1KmwUX3Y2C-- --===============8496289232008483241== Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Disposition: inline _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel --===============8496289232008483241==--