From patchwork Wed Jan 15 07:35:40 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Shawn Guo X-Patchwork-Id: 3490511 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 0BEB29F169 for ; Wed, 15 Jan 2014 07:34:52 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 3CFA7201BA for ; Wed, 15 Jan 2014 07:34:51 +0000 (UTC) Received: from casper.infradead.org (casper.infradead.org [85.118.1.10]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 35E1020122 for ; Wed, 15 Jan 2014 07:34:50 +0000 (UTC) Received: from merlin.infradead.org ([2001:4978:20e::2]) by casper.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1W3Kzq-0000Vv-6Y; Wed, 15 Jan 2014 07:34:42 +0000 Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1W3Kzn-0005R0-LQ; Wed, 15 Jan 2014 07:34:39 +0000 Received: from tx2ehsobe002.messaging.microsoft.com ([65.55.88.12] helo=tx2outboundpool.messaging.microsoft.com) by merlin.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1W3Kzk-0005Qc-Qe for linux-arm-kernel@lists.infradead.org; Wed, 15 Jan 2014 07:34:37 +0000 Received: from mail101-tx2-R.bigfish.com (10.9.14.243) by TX2EHSOBE010.bigfish.com (10.9.40.30) with Microsoft SMTP Server id 14.1.225.22; Wed, 15 Jan 2014 07:34:15 +0000 Received: from mail101-tx2 (localhost [127.0.0.1]) by mail101-tx2-R.bigfish.com (Postfix) with ESMTP id 14BD74A0086; Wed, 15 Jan 2014 07:34:15 +0000 (UTC) X-Forefront-Antispam-Report: CIP:70.37.183.190; KIP:(null); UIP:(null); IPV:NLI; H:mail.freescale.net; RD:none; EFVD:NLI X-SpamScore: 5 X-BigFish: VS5(zcb8kz98dI1432I1381kdbb0izz1f42h2148h208ch1ee6h1de0h1fdah2073h2146h1202h1e76h2189h1d1ah1d2ah1fc6hzz8275ch1d7338h17326ah1de097h186068hz2dh87h2a8h839h944hd25hf0ah1220h1288h12a5h12a9h12bdh137ah13b6h1441h1504h1537h153bh162dh1631h1758h18e1h1946h19b5h1ad9h1b0ah1b2fh2222h224fh1fb3h1d0ch1d2eh1d3fh1dfeh1dffh1fe8h1ff5h209eh2216h22d0h2336h2438h2461h2487h1151h1155h) X-FB-DOMAIN-IP-MATCH: fail Received: from mail101-tx2 (localhost.localdomain [127.0.0.1]) by mail101-tx2 (MessageSwitch) id 1389771253143935_1414; Wed, 15 Jan 2014 07:34:13 +0000 (UTC) Received: from TX2EHSMHS038.bigfish.com (unknown [10.9.14.225]) by mail101-tx2.bigfish.com (Postfix) with ESMTP id 129DE80127; Wed, 15 Jan 2014 07:34:13 +0000 (UTC) Received: from mail.freescale.net (70.37.183.190) by TX2EHSMHS038.bigfish.com (10.9.99.138) with Microsoft SMTP Server (TLS) id 14.16.227.3; Wed, 15 Jan 2014 07:34:06 +0000 Received: from tx30smr01.am.freescale.net (10.81.153.31) by 039-SN1MMR1-003.039d.mgd.msft.net (10.84.1.16) with Microsoft SMTP Server (TLS) id 14.3.158.2; Wed, 15 Jan 2014 07:34:06 +0000 Received: from S2101-09.ap.freescale.net ([10.192.185.3]) by tx30smr01.am.freescale.net (8.14.3/8.14.0) with ESMTP id s0F7Y3Uj023133; Wed, 15 Jan 2014 00:34:04 -0700 Date: Wed, 15 Jan 2014 15:35:40 +0800 From: Shawn Guo To: Philippe De Muyter Subject: Re: imx6dl/imx6q fec rmii mode with external ref_clk Message-ID: <20140115073536.GD1914@S2101-09.ap.freescale.net> References: <20140114153012.GA22550@frolo.macqel> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20140114153012.GA22550@frolo.macqel> User-Agent: Mutt/1.5.21 (2010-09-15) X-OriginatorOrg: sigmatel.com X-FOPE-CONNECTOR: Id%0$Dn%*$RO%0$TLS%0$FQDN%$TlsDn% X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20140115_023436_969363_723C9912 X-CRM114-Status: GOOD ( 14.42 ) X-Spam-Score: -3.5 (---) Cc: linux-arm-kernel@lists.infradead.org X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Spam-Status: No, score=-4.5 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_MED, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP On Tue, Jan 14, 2014 at 04:30:12PM +0100, Philippe De Muyter wrote: > Hi, > > On the custom board we are developping (imx6q and imx6dl), we have connected > the fec to a switch chip using rmii mode, and we let the switch provide the > reference clock to gpio_16. > > I work currently with 3.13-rc8 and > > - I do not have ethernet access working (tx timeout) > - I do not find in the dtb files a description of the pad settings for the > RMII mode > - when searching about the setting for bit 21 ing GPR1, which seems to > be important for my setting to work, I found the following mail: > http://www.spinics.net/lists/devicetree/msg06450.html Just for testing your hardware, does the following change make the Ethernet work for you? Shawn diff --git a/arch/arm/mach-imx/mach-imx6q.c b/arch/arm/mach-imx/mach-imx6q.c index e51e3da..be8d074 100644 --- a/arch/arm/mach-imx/mach-imx6q.c +++ b/arch/arm/mach-imx/mach-imx6q.c @@ -188,7 +188,7 @@ static void __init imx6q_1588_init(void) if (!IS_ERR(gpr)) regmap_update_bits(gpr, IOMUXC_GPR1, IMX6Q_GPR1_ENET_CLK_SEL_MASK, - IMX6Q_GPR1_ENET_CLK_SEL_ANATOP); + 0); else pr_err("failed to find fsl,imx6q-iomux-gpr regmap\n");