From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from lists.ozlabs.org (lists.ozlabs.org [112.213.38.117]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1) server-digest SHA256) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 91714606A329 for ; Tue, 20 Oct 2026 01:38:15 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key, unprotected) header.d=nabladev.com header.i=@nabladev.com header.a=rsa-sha256 header.s=dkim header.b=gkhjrsVg Received: from boromir.ozlabs.org (localhost [127.0.0.1]) by lists.ozlabs.org (Postfix) with ESMTP id 4j7w6G0S4dz2y2J; Tue, 20 Oct 2026 12:38:14 +1100 (AEDT) Authentication-Results: lists.ozlabs.org; arc=none smtp.remote-ip="2a00:f820:417:0:178:251:229:89" ARC-Seal: i=1; a=rsa-sha256; d=lists.ozlabs.org; s=201707; t=1792460293; cv=none; b=A5lYXAi74b1/uDHobC9evx3QCwFWJ+IH5pIESXecwWCyCPU5k8FYg3QuRLeINXg1XhQbCb9GOMrs1/snY84EEPdBoTPqeuHbHOFUZmx+5uVMvu7QtLkexVyehLrA9TiXdYBkFMurHtY2aHGR+ljPrVrs1D+rhV/dO738cS/b+vVTXL9ql/9d097/uZYFpRdhrUnqko7IokAff3UNwfrnk/NcFe0RXFME8oDASEuRj40jG36pvTFTe5bOXGSn+XYfRBQg9wKfIlK/FfvXmKzUzI0+LYX8C+XqgECKUs2wYKT14xFf8TsWAUgFhNKEO8bvXZQDHg3fkCQJCyCbcq263Q== ARC-Message-Signature: i=1; a=rsa-sha256; d=lists.ozlabs.org; s=201707; t=1792460293; c=relaxed/relaxed; bh=PbjFjYksln6X5VCuok/GYUEp4Jt2bFAm9SetP90rGcM=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=MobUSw3HYwVcv7jxXIgc1NMsowsH6qCMQWTC/EKPftqErVBJUl1A+yvaR79yRu6kZq1XzA3sAip36E+rEhCbUEz6h29LiLiQWNHyhac9r8jYJesQNdyYb3W9YEsoXLICw0Jtk+9ddeb8/uzhJrAPXk//1do+vBwPt3W9EdL4mr0X76u5/KmpKMcR+MQ0MrYAo+xolqdgdEd24qYPToGxTNDNHMCxB6uZYz+WsKH9ChFp5yHhkgZldKhxBClZMNvFaYpYp73f1LCnKh26P78Q15sh6I8nsZYcF3iDCzV/eHI7U6cbkSVZ4Q+Fos8h0Z4q2EoFAzoD9W7c2Go61bciPw== ARC-Authentication-Results: i=1; lists.ozlabs.org; dmarc=pass (p=reject dis=none) header.from=nabladev.com; dkim=pass (2048-bit key; unprotected) header.d=nabladev.com header.i=@nabladev.com header.a=rsa-sha256 header.s=dkim header.b=gkhjrsVg; dkim-atps=neutral; spf=pass (client-ip=2a00:f820:417:0:178:251:229:89; helo=mx.nabladev.com; envelope-from=marex@nabladev.com; receiver=lists.ozlabs.org) smtp.mailfrom=nabladev.com Authentication-Results: lists.ozlabs.org; dmarc=pass (p=reject dis=none) header.from=nabladev.com Authentication-Results: lists.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=nabladev.com header.i=@nabladev.com header.a=rsa-sha256 header.s=dkim header.b=gkhjrsVg; dkim-atps=neutral Authentication-Results: lists.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nabladev.com (client-ip=2a00:f820:417:0:178:251:229:89; helo=mx.nabladev.com; envelope-from=marex@nabladev.com; receiver=lists.ozlabs.org) Received: from mx.nabladev.com (mx.nabladev.com [IPv6:2a00:f820:417:0:178:251:229:89]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange x25519 server-signature RSA-PSS (2048 bit raw public key) server-digest SHA256) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 4j7w6C2TdCz2xln for ; Tue, 20 Oct 2026 12:38:10 +1100 (AEDT) Received: from [127.0.0.1] (localhost [127.0.0.1]) by localhost (Mailerdaemon) with ESMTPSA id E71FA108825; Tue, 20 Oct 2026 03:37:56 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=nabladev.com; s=dkim; t=1792460281; h=from:subject:date:message-id:to:cc:mime-version:content-type: content-transfer-encoding:content-language:in-reply-to:references; bh=PbjFjYksln6X5VCuok/GYUEp4Jt2bFAm9SetP90rGcM=; b=gkhjrsVg8YdzKJiWw+oBJJoGOWMSaX2plJh2ECGP6pobGez/hDtH0UV4Rc2GlxMKP/fXbF mFRHOvJDQ5/kcprfkbErcvoAO2cidfW1VgzDUdVmsiwoKZq51M2pIyMSiB9+mFd5e2Y+XE zIrWXd21uoO8qiwXwxlMoS1cEEkqb5V7RipLdtD1smpxlx42HVcI2xhjn7frxAydftEr9K BRNUqGr0Hyai2/OODFby0KhwLg52WWQJ0Ndu4cZfDaERlK07618LcHO8wB2hrcFgrUvMa/ vQkCTJEDpb9ssDuGPZeYe/7oi7OrMmtFkutPvii2Ku6bc20iYPHtQno+K7cwGw== Message-ID: Date: Mon, 19 Oct 2026 18:10:18 +0200 X-Mailing-List: linuxppc-dev@lists.ozlabs.org List-Id: List-Help: List-Owner: List-Post: List-Archive: , List-Subscribe: , , Precedence: list X-Archived-By: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [net-next,PATCH 2/2] enetc: Make eMDIO MDC rate configurable from DT To: Wei Fang , "Frank Li (OSS)" Cc: "netdev@vger.kernel.org" , Vladimir Oltean , "Christophe Leroy (CS GROUP)" , "David S. Miller" , Andrew Lunn , Clark Wang , Claudiu Manoil , Conor Dooley , Eric Dumazet , Frank Li , Jakub Kicinski , Krzysztof Kozlowski , Paolo Abeni , Rob Herring , "UNGLinuxDriver@microchip.com" , "devicetree@vger.kernel.org" , "imx@lists.linux.dev" , "linux-arm-kernel@lists.infradead.org" , "linux-kernel@vger.kernel.org" , "linuxppc-dev@lists.ozlabs.org" References: <20261016193344.115518-1-marex@nabladev.com> <20261016193344.115518-2-marex@nabladev.com> <661412ff-3942-4d1c-be6f-1ef6c54620fd@nabladev.com> Content-Language: en-US From: Marek Vasut In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Last-TLS-Session-Version: TLSv1.3 X-Spam-Status: No, score=-5.7 required=3.0 tests=BAYES_00,DATE_IN_PAST_06_12, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_PASS,SPF_PASS,USER_AGENT_SANE_1 autolearn=no autolearn_force=no version=4.0.1 X-Spam-Checker-Version: SpamAssassin 4.0.1 (2024-03-26) on aws-us-west-2-korg-listserv-alma10-1 On 10/19/26 4:59 AM, Wei Fang wrote: Hello Wei, >>>>> +int enetc_mdio_update_mdc_div(struct mii_bus *bus) { >>>>> + struct enetc_mdio_priv *mdio_priv = bus->priv; >>>>> + struct device *dev = bus->parent; >>>>> + struct clk *enet_clk; >>>>> + u32 div, mdc_freq; >>>>> + >>>>> + if (device_property_read_u32(dev, "clock-frequency", &mdc_freq)) >>>>> + return 0; >>>>> + >>>>> + enet_clk = devm_clk_get(dev, NULL); >>>>> + if (IS_ERR(enet_clk)) >>>>> + return dev_err_probe(dev, PTR_ERR(enet_clk), >>>>> + "Input clock unknown, not changing MDC >>>> frequency\n"); >>>> >>>> binding said clock is optional. If return failure here, it will block >>>> existing dts, which have not clock property. >>>> >>> >>> For EMDIO device, the clocks property is not added to >>> fsl,enetc-mdio.yaml, I suppose this property should be added to the >>> dt-binding doc if the clock is really needed here. >> >> Isn't this what 1/2 in this series does ? (maybe I misunderstood this >> paragraph) > > Sorry, my email filtered out the 1/2 patch, so I missed it. No worries. >>> For ENETC device, we already have a 'ref' clock in the enetc node, so >>> devm_clk_get(dev, NULL) may get the 'ref' clock rather than the system >>> clock of NETC. >> Shouldn't the clock be described in the MDIO DT node ? > > The enetc_mdio_read_* and enetc_mdio_write_* interfaces are not only > used by EMDIO devices, the ENETCs and NETC switches also use them. > NETC switches and ENETCs can access external PHYs or internal PCS/Serdes > through their own port MDIO registers, instead of through EMDIO devices. > > Your first patch only modified the EMDIO binding-doc, not the ENETC and > switch binding-doc. So I need to patch also Documentation/devicetree/bindings/net/dsa/mscc,ocelot.yaml ? Any other binding document ? Thank you for your help !