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: 13309382 X-Patchwork-Delegate: kuba@kernel.org Received: from lindbergh.monkeyblade.net (lindbergh.monkeyblade.net [23.128.96.19]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id DC13319BDF for ; Tue, 11 Jul 2023 20:58:34 +0000 (UTC) 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 86E001711 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-f71.google.com (mail-oo1-f71.google.com [209.85.161.71]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-391-nZYCuj8pPTK6OpZ7zYTldg-1; Tue, 11 Jul 2023 16:58:31 -0400 X-MC-Unique: nZYCuj8pPTK6OpZ7zYTldg-1 Received: by mail-oo1-f71.google.com with SMTP id 006d021491bc7-563afee3369so4276814eaf.3 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=WDQ3vDEt+4bTozB52cQR5z1rkHvTNdy23RNwAo3tHg3XegZXPreYdYMErYBbgVUthS ocMaGaTtQIgI+g0wTdIMOacmW3V9bhMsfs/64W85Dg8l6LpGEZfYKluwJMxODFwlgmK9 SdPoHTbmKQuWrOikFjx2jtrGGtgaFrPbQbuGIXonfW6XTY0OxAmeQEUbc+TQkCtScji6 AnNNSY1efwRhXODhKS/9ID3mow1mnEG/KK6X5Ne2+TbdbjEPzodo6SQ5hRmTTlI1rnX9 JYG7x4VsZSqVSkxtx4zNLpzpNwO5pAEW6o8s5yZ9bQ6q/aJ1FIiTd0QF6n5gbHu7xYAw yPoQ== X-Gm-Message-State: ABy/qLZ1ltL/csmr3NWwvU22qC3Om3066y3nj5JLm5WbGEMqmUflr6oA 2VSBn6M3d4586sZ7IOrXZVBWC7DTPFtzhdDBTdUX1flCtQxXe8+iwBFKxSa2jwLuOPWEgOwy1uB 54hWLWfnJylFqTUcw X-Received: by 2002:a05:6358:340b:b0:134:c4dc:2c4e with SMTP id h11-20020a056358340b00b00134c4dc2c4emr5573617rwd.23.1689109110685; 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> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-type: text/plain X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_NONE, RCVD_IN_MSPIKE_H4,RCVD_IN_MSPIKE_WL,SPF_HELO_NONE,SPF_NONE, T_SCC_BODY_TEXT_LINE autolearn=unavailable autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net X-Patchwork-Delegate: kuba@kernel.org X-Patchwork-State: RFC 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); }