From nobody Sun Feb 8 12:57:37 2026 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 D1271C001B0 for ; Tue, 11 Jul 2023 20:59:05 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231414AbjGKU7E (ORCPT ); Tue, 11 Jul 2023 16:59:04 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55900 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231416AbjGKU65 (ORCPT ); Tue, 11 Jul 2023 16:58:57 -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 B5CA110DD for ; Tue, 11 Jul 2023 13:58:13 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1689109092; 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=DGh+uAGSNBabNs8otONzVd5nXL6Ue86FrE6lpV0zFTs=; b=OArO2mzRUq2d1CFg0i4WIQ5U3YuByW8RaWLGIKFJBVbRbjNs/7AsVnActh1bcApFbZlyTf iA4+ZnOQTbaXwzgiRhoMitrukylur3olLYwrHELMy9V3DXovDKOT+DpP4hUVgLqSXrGBqS skcqBbbMcaoKNztgJtlJyucvkZdnHWc= Received: from mail-yw1-f199.google.com (mail-yw1-f199.google.com [209.85.128.199]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-357-ucAPLURSP52NkkL9W8Wf1w-1; Tue, 11 Jul 2023 16:58:11 -0400 X-MC-Unique: ucAPLURSP52NkkL9W8Wf1w-1 Received: by mail-yw1-f199.google.com with SMTP id 00721157ae682-5766e49b802so62819097b3.1 for ; Tue, 11 Jul 2023 13:58:11 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1689109091; x=1691701091; 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=DGh+uAGSNBabNs8otONzVd5nXL6Ue86FrE6lpV0zFTs=; b=d7DqWwmqSJPbWTP2koUsSzJRMQv7YgeUnf88agzrDPXMenHIjYTASwoWbDniv+nDf1 Un8cPr6IoLPsIyvIemU20X4JvSbwWt4KArTCuRQ2xMLUnlYlMuPv5UryyNmUbMHUiNAI TaJjjsJaV+bRRu6jNAbLJhKma4ZsCq4IyD8jQisoq74IUbvSb7qp9w5Qg2Pejbe3LBZo uj/0E/bXNBMpI5KHd7msbBbUxomabcLlhDKGWTbzSGj4/306CJDg8XhRQ5S+2xnkN7kf XxQBJzmMagZ4Wg4CqzXwHMWOuK2IDJ6hFZgq3X+MKLCz8IRlVQZxSqXxlXbXVAFm22rp 25hw== X-Gm-Message-State: ABy/qLbaCxP1hjJ49Sklwql3U2+pVmuXS3RCGL4CGbyIKqL4TNH0fge6 9zQlhtZBHJEXovfYaYlOMwt5/MDZQqRnJGMkIHgF+mNI90etqTzhnrkdiWfSFM5UWYd1KMb++Mo XeYUuBS8gLD3G7iXANFwqM6/gNSlNrYnfqpAKAFG3YKZStd/kzTVgtpL8je4NGiRxiVAcZZ997+ x65ocr5YtC X-Received: by 2002:a0d:d851:0:b0:56d:5272:d540 with SMTP id a78-20020a0dd851000000b0056d5272d540mr15383351ywe.46.1689109090949; Tue, 11 Jul 2023 13:58:10 -0700 (PDT) X-Google-Smtp-Source: APBJJlEBKIgazDrRhr2+67U2dBV7TYIWtfQ85b0QfXe8t9Je+goLDwuNWjUTwlmm9dlLHEZL6Qvc5A== X-Received: by 2002:a0d:d851:0:b0:56d:5272:d540 with SMTP id a78-20020a0dd851000000b0056d5272d540mr15383327ywe.46.1689109090644; Tue, 11 Jul 2023 13:58:10 -0700 (PDT) Received: from halaney-x13s.attlocal.net ([2600:1700:1ff0:d0e0::22]) by smtp.gmail.com with ESMTPSA id j136-20020a81928e000000b00545a08184cesm785353ywg.94.2023.07.11.13.58.09 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 11 Jul 2023 13:58:10 -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 1/3] net: stmmac: Make ptp_clk_freq_config variable type explicit Date: Tue, 11 Jul 2023 15:35:30 -0500 Message-ID: <20230711205732.364954-2-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-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" The priv variable is _always_ of type (struct stmmac_priv *), so let's stop using (void *) since it isn't abstracting anything. Signed-off-by: Andrew Halaney Reviewed-by: Simon Horman --- drivers/net/ethernet/stmicro/stmmac/dwmac-intel.c | 3 +-- include/linux/stmmac.h | 4 +++- 2 files changed, 4 insertions(+), 3 deletions(-) diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-intel.c b/drivers/ne= t/ethernet/stmicro/stmmac/dwmac-intel.c index ab9f876b6df7..718bae6872da 100644 --- a/drivers/net/ethernet/stmicro/stmmac/dwmac-intel.c +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-intel.c @@ -257,9 +257,8 @@ static void intel_speed_mode_2500(struct net_device *nd= ev, void *intel_data) /* Program PTP Clock Frequency for different variant of * Intel mGBE that has slightly different GPO mapping */ -static void intel_mgbe_ptp_clk_freq_config(void *npriv) +static void intel_mgbe_ptp_clk_freq_config(struct stmmac_priv *priv) { - struct stmmac_priv *priv =3D (struct stmmac_priv *)npriv; struct intel_priv_data *intel_priv; u32 gpio_value; =20 diff --git a/include/linux/stmmac.h b/include/linux/stmmac.h index 06090538fe2d..c0cbcef1a2f0 100644 --- a/include/linux/stmmac.h +++ b/include/linux/stmmac.h @@ -76,6 +76,8 @@ | DMA_AXI_BLEN_32 | DMA_AXI_BLEN_64 \ | DMA_AXI_BLEN_128 | DMA_AXI_BLEN_256) =20 +struct stmmac_priv; + /* Platfrom data for platform device structure's platform_data field */ =20 struct stmmac_mdio_bus_data { @@ -245,7 +247,7 @@ struct plat_stmmacenet_data { int (*serdes_powerup)(struct net_device *ndev, void *priv); void (*serdes_powerdown)(struct net_device *ndev, void *priv); void (*speed_mode_2500)(struct net_device *ndev, void *priv); - void (*ptp_clk_freq_config)(void *priv); + void (*ptp_clk_freq_config)(struct stmmac_priv *priv); int (*init)(struct platform_device *pdev, void *priv); void (*exit)(struct platform_device *pdev, void *priv); struct mac_device_info *(*setup)(void *priv); --=20 2.41.0 From nobody Sun Feb 8 12:57:37 2026 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 E563AEB64DD for ; Tue, 11 Jul 2023 20:59:09 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231528AbjGKU7I (ORCPT ); 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charset="utf-8" Qualcomm clocks can set their frequency to a variety of levels generally. Let's use the max for clk_ptp_ref to ensure the best timestamping resolution possible. Without this, the default value of the clock is used. For sa8775p-ride this is 19.2 MHz, far less than the 230.4 MHz possible. Signed-off-by: Andrew Halaney --- .../stmicro/stmmac/dwmac-qcom-ethqos.c | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c b/driv= ers/net/ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c index 757504ebb676..f9e7440520fa 100644 --- a/drivers/net/ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c @@ -694,6 +694,23 @@ static void ethqos_clks_disable(void *data) ethqos_clks_config(data, false); } =20 +static void ethqos_ptp_clk_freq_config(struct stmmac_priv *priv) +{ + struct plat_stmmacenet_data *plat_dat =3D priv->plat; + int err; + + if (!plat_dat->clk_ptp_ref) + return; + + /* Max the PTP ref clock out to get the best resolution possible */ + err =3D clk_set_rate(plat_dat->clk_ptp_ref, ULONG_MAX); + if (err) + netdev_err(priv->dev, "Failed to max out clk_ptp_ref: %d\n", err); + plat_dat->clk_ptp_rate =3D clk_get_rate(plat_dat->clk_ptp_ref); + + netdev_dbg(priv->dev, "PTP rate %d\n", plat_dat->clk_ptp_rate); +} + static int qcom_ethqos_probe(struct platform_device *pdev) { struct device_node *np =3D pdev->dev.of_node; @@ -779,6 +796,7 @@ static int qcom_ethqos_probe(struct platform_device *pd= ev) plat_dat->bsp_priv =3D ethqos; plat_dat->fix_mac_speed =3D ethqos_fix_mac_speed; plat_dat->dump_debug_regs =3D rgmii_dump; + plat_dat->ptp_clk_freq_config =3D ethqos_ptp_clk_freq_config; plat_dat->has_gmac4 =3D 1; if (ethqos->has_emac_ge_3) plat_dat->dwmac4_addrs =3D &data->dwmac4_addrs; --=20 2.41.0 From nobody Sun Feb 8 12:57:37 2026 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 35158EB64DD for ; Tue, 11 Jul 2023 20:59:29 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231562AbjGKU71 (ORCPT ); Tue, 11 Jul 2023 16:59:27 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56024 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229964AbjGKU7U (ORCPT ); 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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-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" Using the max frequency allows for the best PTP timestamping resolution, so let's default to that. Signed-off-by: Andrew Halaney --- 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/driver= s/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, u= 8 *mac) plat->clk_ptp_ref =3D NULL; dev_info(&pdev->dev, "PTP uses main clock\n"); } else { + /* Get the best resolution possible */ + rc =3D 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 =3D clk_get_rate(plat->clk_ptp_ref); dev_dbg(&pdev->dev, "PTP rate %d\n", plat->clk_ptp_rate); } --=20 2.41.0