From patchwork Tue Jul 11 20:35:32 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andrew Halaney X-Patchwork-Id: 13309378 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 97776EB64DC for ; Tue, 11 Jul 2023 20:59:33 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231613AbjGKU7c (ORCPT ); Tue, 11 Jul 2023 16:59:32 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56022 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231463AbjGKU7W (ORCPT ); Tue, 11 Jul 2023 16:59:22 -0400 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 758A01710 for ; Tue, 11 Jul 2023 13:58:33 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1689109112; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=CvuwAv+s14TExJvbO2C4lPkzFf4n3yORaiUFHM896h4=; b=BbHA4gkiSFp38W3GTh5Q6s3A/SlPSWz0A1nBZOQpymyDCFijtWTCrhHJydWyHk1xumvxIe vs49D6/jMg1P8RPsF8PPMzQHZNr/QGt2ANxXlHnBALHjDPWuif/JMSBSBlfee0ZkjBp0Uj RX5c1YaeivprvBYYGcEqA9AKa6vG4jo= Received: from mail-oo1-f70.google.com (mail-oo1-f70.google.com [209.85.161.70]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-387-U_6mDg9lOueZGsm-80HwPw-1; Tue, 11 Jul 2023 16:58:31 -0400 X-MC-Unique: U_6mDg9lOueZGsm-80HwPw-1 Received: by mail-oo1-f70.google.com with SMTP id 006d021491bc7-565893ef956so4289385eaf.0 for ; Tue, 11 Jul 2023 13:58:31 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1689109110; x=1691701110; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=CvuwAv+s14TExJvbO2C4lPkzFf4n3yORaiUFHM896h4=; b=A56km1fG9N+a7NRhCpXJiLd7LDlCuaQFnFZtG1bo0N8teXgdxThNr1yO7GPkOkFgOv PX5mVJLiHi9NsJDqrDKMVL4Ty02Eyu207CP7sjRPzNGz3n9HI4Yj3AjXtrtrhOA0SC7J Ods9rY5LYA9PIa4dff01LnQy5vnc3cCktWim+d5tg4nSvb9sZ1d9rjZ/pWt4K2fuROfA k7xQ0sOtFbtKdpqHtVrOlUynVQZzpraGlgFReXPkdMx5+GeJpB5YLJMcli0ExQPBdN+U odaGKfgqPzj+TilWKwLO1E9GPtat1z0kGHQl0zf2/p1SAjgy/kOCjDNWhb0lo6/u45k0 DM3A== X-Gm-Message-State: ABy/qLYTrznqcin6HwzEWeT7zrLYgsD740fq8TK8svOrM+ibjkCDuc16 XtkNybis6g4hH1DvfMM/ykxMMhvd/54YpWaSU1UHrwxaSBcCkvVqFATYQ6upcIklBW6cf0LPC5u wnc4xof7qRTwrbL3xsl5oxd/RqA== X-Received: by 2002:a05:6358:340b:b0:134:c4dc:2c4e with SMTP id h11-20020a056358340b00b00134c4dc2c4emr5573612rwd.23.1689109110682; Tue, 11 Jul 2023 13:58:30 -0700 (PDT) X-Google-Smtp-Source: APBJJlEDwoVz3zRB6ah8VU/FCjuuuOvOlH20gHcWLu5haldDqXSdHnX1ggzW6h5gC9xUcPFDK+Zpxw== X-Received: by 2002:a05:6358:340b:b0:134:c4dc:2c4e with SMTP id h11-20020a056358340b00b00134c4dc2c4emr5573607rwd.23.1689109110337; Tue, 11 Jul 2023 13:58:30 -0700 (PDT) Received: from halaney-x13s.attlocal.net ([2600:1700:1ff0:d0e0::22]) by smtp.gmail.com with ESMTPSA id j136-20020a81928e000000b00545a08184cesm785353ywg.94.2023.07.11.13.58.29 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 11 Jul 2023 13:58:30 -0700 (PDT) From: Andrew Halaney To: linux-kernel@vger.kernel.org Cc: linux-arm-kernel@lists.infradead.org, linux-stm32@st-md-mailman.stormreply.com, netdev@vger.kernel.org, mcoquelin.stm32@gmail.com, pabeni@redhat.com, kuba@kernel.org, edumazet@google.com, davem@davemloft.net, joabreu@synopsys.com, alexandre.torgue@foss.st.com, peppe.cavallaro@st.com, bhupesh.sharma@linaro.org, vkoul@kernel.org, linux-arm-msm@vger.kernel.org, jsuraj@qti.qualcomm.com, Andrew Halaney Subject: [PATCH RFC/RFT net-next 3/3] net: stmmac: Use the max frequency possible for clk_ptp_ref Date: Tue, 11 Jul 2023 15:35:32 -0500 Message-ID: <20230711205732.364954-4-ahalaney@redhat.com> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20230711205732.364954-1-ahalaney@redhat.com> References: <20230711205732.364954-1-ahalaney@redhat.com> MIME-Version: 1.0 Content-type: text/plain Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org Using the max frequency allows for the best PTP timestamping resolution, so let's default to that. Signed-off-by: Andrew Halaney Reviewed-by: Simon Horman --- drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c index 231152ee5a32..c9a27a71a3f4 100644 --- a/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c @@ -602,6 +602,11 @@ stmmac_probe_config_dt(struct platform_device *pdev, u8 *mac) plat->clk_ptp_ref = NULL; dev_info(&pdev->dev, "PTP uses main clock\n"); } else { + /* Get the best resolution possible */ + rc = clk_set_rate(plat->clk_ptp_ref, ULONG_MAX); + if (rc) + dev_err(&pdev->dev, + "Failed to set clk_ptp_ref rate: %d\n", rc); plat->clk_ptp_rate = clk_get_rate(plat->clk_ptp_ref); dev_dbg(&pdev->dev, "PTP rate %d\n", plat->clk_ptp_rate); }