From patchwork Fri Mar 31 21:45:47 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andrew Halaney X-Patchwork-Id: 13196624 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 AE301C76196 for ; Fri, 31 Mar 2023 21:49:25 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233361AbjCaVtY (ORCPT ); Fri, 31 Mar 2023 17:49:24 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:35074 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233288AbjCaVsb (ORCPT ); Fri, 31 Mar 2023 17:48:31 -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 315B324419 for ; Fri, 31 Mar 2023 14:46:49 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1680299208; 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=0Mton65QavIHW4pS7iCeuKjBRu19pdJkM06/aTTiBVM=; b=NSqKqO7HuW60JBqavI0YotUFownwOeLPF7UjiDXGcQyEwuZqYF6M/kZdJeLfzMf8NGdpSU LZHxr0bHtliy2HTZEsBhcaauHrcnv4hmBeqEibcg1NtpWyIUauEPuUSYeC3WyfqluY7ivH vN/ecufkMyH7E8UKcEKgVBaa9JmL0iI= Received: from mail-ot1-f69.google.com (mail-ot1-f69.google.com [209.85.210.69]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-217-pfbxSeQaMzqSjwEXoOu8Hg-1; Fri, 31 Mar 2023 17:46:47 -0400 X-MC-Unique: pfbxSeQaMzqSjwEXoOu8Hg-1 Received: by mail-ot1-f69.google.com with SMTP id q6-20020a05683022c600b0069f96cb2758so8674803otc.0 for ; Fri, 31 Mar 2023 14:46:47 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; t=1680299206; 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=0Mton65QavIHW4pS7iCeuKjBRu19pdJkM06/aTTiBVM=; b=THZlD8XJPdfu/fVc4pbLxQanJdGmxJBoqmDJisI56ZjU4AULIm0Iq7n5elwAUgqmng +d7oLOKgh/PbV6labNQxKyAOtSj0K41f9+j/x3FSkfWomwgPsvVKuXrBqOvmboFpWL62 t9Sci3GX6X5qP29ycBwkVLEGaIik27mA5CD8ZxpVGGEZ+CKMLJ7sRquWd9sT6fTqnBZM fAIkvBRhw1938cUlzFNB7rU4B4OAIX3OprnCZEZGCBUzbNMhhLCFy6oWtNVjc9rLrQif G2d2u22I86oH/icQ+Grr/5377ae0I+8XRuJG8kMoNqFhrmXaT+AF9gsB0ttdvNTJOjA1 xJiQ== X-Gm-Message-State: AO0yUKVL0iNQIJx+c6DxGIJwc2uxX8NFIcgcLdQJL2t9U2HbcQtc+C9y /Kf4Bd7D8W6mTaJsVJJINOcVNSjjsw0URxjzdPpf4fCD6wOcnjwMJk5inWOD5U7UnqaVNpTx8LW LoyvAjTztJWDZRYD6L+CcjxUAew== X-Received: by 2002:a05:6808:1d2:b0:383:ee1d:f489 with SMTP id x18-20020a05680801d200b00383ee1df489mr12195919oic.0.1680299206117; Fri, 31 Mar 2023 14:46:46 -0700 (PDT) X-Google-Smtp-Source: AK7set/1gYn//RWHYb3ekWCYBqE8+yuGcDX2J9Y8cbpS1H837SPR6UAo+30Xaiuyxu1Ng2JKfgKuGg== X-Received: by 2002:a05:6808:1d2:b0:383:ee1d:f489 with SMTP id x18-20020a05680801d200b00383ee1df489mr12195910oic.0.1680299205907; Fri, 31 Mar 2023 14:46:45 -0700 (PDT) Received: from halaney-x13s.attlocal.net (104-53-165-62.lightspeed.stlsmo.sbcglobal.net. [104.53.165.62]) by smtp.gmail.com with ESMTPSA id x80-20020a4a4153000000b0053d9be4be68sm1328531ooa.19.2023.03.31.14.46.43 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 31 Mar 2023 14:46:45 -0700 (PDT) From: Andrew Halaney To: linux-kernel@vger.kernel.org Cc: agross@kernel.org, andersson@kernel.org, konrad.dybcio@linaro.org, davem@davemloft.net, edumazet@google.com, kuba@kernel.org, pabeni@redhat.com, robh+dt@kernel.org, krzysztof.kozlowski+dt@linaro.org, vkoul@kernel.org, bhupesh.sharma@linaro.org, wens@csie.org, jernej.skrabec@gmail.com, samuel@sholland.org, mturquette@baylibre.com, peppe.cavallaro@st.com, alexandre.torgue@foss.st.com, joabreu@synopsys.com, mcoquelin.stm32@gmail.com, richardcochran@gmail.com, linux@armlinux.org.uk, veekhee@apple.com, tee.min.tan@linux.intel.com, mohammad.athari.ismail@intel.com, jonathanh@nvidia.com, ruppala@nvidia.com, bmasney@redhat.com, andrey.konovalov@linaro.org, linux-arm-msm@vger.kernel.org, netdev@vger.kernel.org, devicetree@vger.kernel.org, linux-stm32@st-md-mailman.stormreply.com, linux-arm-kernel@lists.infradead.org, ncai@quicinc.com, jsuraj@qti.qualcomm.com, hisunil@quicinc.com, echanude@redhat.com, Andrew Halaney Subject: [PATCH net-next v3 10/12] net: stmmac: dwmac-qcom-ethqos: Respect phy-mode and TX delay Date: Fri, 31 Mar 2023 16:45:47 -0500 Message-Id: <20230331214549.756660-11-ahalaney@redhat.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230331214549.756660-1-ahalaney@redhat.com> References: <20230331214549.756660-1-ahalaney@redhat.com> MIME-Version: 1.0 Content-type: text/plain Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org The driver currently sets a MAC TX delay of 2 ns no matter what the phy-mode is. If the phy-mode indicates the phy is in charge of the TX delay (rgmii-txid, rgmii-id), don't do it in the MAC. Signed-off-by: Andrew Halaney --- Changes since v2: * Fix spacing, reverse xmas tree (Jakub) Changes since v1: * Use a consistent subject prefix with other stmmac changes in series (myself) .../stmicro/stmmac/dwmac-qcom-ethqos.c | 20 ++++++++++++++----- 1 file changed, 15 insertions(+), 5 deletions(-) diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c index 32763566c214..abec6dd27992 100644 --- a/drivers/net/ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c @@ -279,6 +279,17 @@ static int ethqos_dll_configure(struct qcom_ethqos *ethqos) static int ethqos_rgmii_macro_init(struct qcom_ethqos *ethqos) { + int phase_shift; + int phy_mode; + + /* Determine if the PHY adds a 2 ns TX delay or the MAC handles it */ + phy_mode = device_get_phy_mode(ðqos->pdev->dev); + if (phy_mode == PHY_INTERFACE_MODE_RGMII_ID || + phy_mode == PHY_INTERFACE_MODE_RGMII_TXID) + phase_shift = 0; + else + phase_shift = RGMII_CONFIG2_TX_CLK_PHASE_SHIFT_EN; + /* Disable loopback mode */ rgmii_updatel(ethqos, RGMII_CONFIG2_TX_TO_RX_LOOPBACK_EN, 0, RGMII_IO_MACRO_CONFIG2); @@ -300,9 +311,9 @@ static int ethqos_rgmii_macro_init(struct qcom_ethqos *ethqos) RGMII_CONFIG_PROG_SWAP, RGMII_IO_MACRO_CONFIG); rgmii_updatel(ethqos, RGMII_CONFIG2_DATA_DIVIDE_CLK_SEL, 0, RGMII_IO_MACRO_CONFIG2); + rgmii_updatel(ethqos, RGMII_CONFIG2_TX_CLK_PHASE_SHIFT_EN, - RGMII_CONFIG2_TX_CLK_PHASE_SHIFT_EN, - RGMII_IO_MACRO_CONFIG2); + phase_shift, RGMII_IO_MACRO_CONFIG2); rgmii_updatel(ethqos, RGMII_CONFIG2_RSVD_CONFIG15, 0, RGMII_IO_MACRO_CONFIG2); rgmii_updatel(ethqos, RGMII_CONFIG2_RX_PROG_SWAP, @@ -336,8 +347,7 @@ static int ethqos_rgmii_macro_init(struct qcom_ethqos *ethqos) rgmii_updatel(ethqos, RGMII_CONFIG2_DATA_DIVIDE_CLK_SEL, 0, RGMII_IO_MACRO_CONFIG2); rgmii_updatel(ethqos, RGMII_CONFIG2_TX_CLK_PHASE_SHIFT_EN, - RGMII_CONFIG2_TX_CLK_PHASE_SHIFT_EN, - RGMII_IO_MACRO_CONFIG2); + phase_shift, RGMII_IO_MACRO_CONFIG2); rgmii_updatel(ethqos, RGMII_CONFIG_MAX_SPD_PRG_2, BIT(6), RGMII_IO_MACRO_CONFIG); rgmii_updatel(ethqos, RGMII_CONFIG2_RSVD_CONFIG15, @@ -375,7 +385,7 @@ static int ethqos_rgmii_macro_init(struct qcom_ethqos *ethqos) rgmii_updatel(ethqos, RGMII_CONFIG2_DATA_DIVIDE_CLK_SEL, 0, RGMII_IO_MACRO_CONFIG2); rgmii_updatel(ethqos, RGMII_CONFIG2_TX_CLK_PHASE_SHIFT_EN, - 0, RGMII_IO_MACRO_CONFIG2); + phase_shift, RGMII_IO_MACRO_CONFIG2); rgmii_updatel(ethqos, RGMII_CONFIG_MAX_SPD_PRG_9, BIT(12) | GENMASK(9, 8), RGMII_IO_MACRO_CONFIG);