From patchwork Mon Mar 20 22:16:17 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andrew Halaney X-Patchwork-Id: 13181965 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 47900C6FD1C for ; Mon, 20 Mar 2023 22:18:55 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=LD43v40vFf3QEolCNtLCbKEIIiLcA9wly7DcJtlwsOU=; b=MvHzD2T2VBYR/W SPJAnKjwM9Ks4iWbuTPFK7AbiBsDKxURX5prYLC7Xt5Vm+JsZKTuLxtoLsi02+jDfmOxRhjxpbc0x S9sbJsCfwynONxuMOYo7ebe8CcSm4pz12uR1jMDBm697mzl6xJzoCaV3KiE9DJEjMMZdC0nh4q6XC AyKVLd6ThdJJmvyZsBdSHDe8eDhb7iTR2d0IDoPGhBhqk4ql6C6VzlgnK6vTlEnhKtQSb0n5slP6n f4jNDp7q8yquv84KoVpVNjzHqM5bkBZ3dvnDHilogUrTFUdAMWaZ9ugTjYjy+uLkvFBM+ziGrb1IH crxpOcRoxPMZdFYa+Fpw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1peNpE-00AcYj-0u; Mon, 20 Mar 2023 22:17:56 +0000 Received: from us-smtp-delivery-124.mimecast.com ([170.10.129.124]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1peNoi-00AcDj-2M for linux-arm-kernel@lists.infradead.org; Mon, 20 Mar 2023 22:17:26 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1679350643; 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=6mAYxo5czKjIWVyAG97r5+Dwem7hjuC7SmdROQurOmg=; b=a0LpVzAkfC5Ms0SMNBest8SSME37UjRazCM4RqkFL+2O3rSDRkZLZkj/vOFqbuHUupkPz3 s+yt0LKCCnlqGqtty5ZUXel/lXjiiaLvUJ/CyrvryWMRq8X6U7B7c+o7ENoHwRGUCCotP0 6k9DlQU7WZKXmKm34K+ZdQliN5/CYkA= Received: from mail-ot1-f70.google.com (mail-ot1-f70.google.com [209.85.210.70]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-581-i3rVcRC2MeeFcmXDDzFJbw-1; Mon, 20 Mar 2023 18:17:22 -0400 X-MC-Unique: i3rVcRC2MeeFcmXDDzFJbw-1 Received: by mail-ot1-f70.google.com with SMTP id d14-20020a0568301b6e00b0069f3c72187cso1594777ote.10 for ; Mon, 20 Mar 2023 15:17:22 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; t=1679350642; 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=6mAYxo5czKjIWVyAG97r5+Dwem7hjuC7SmdROQurOmg=; b=Dd2LvYlNMJ+kyh29feJfsBcV/fne/in4oewWNYkZYXbVeCSxPLE+t+Kjo3rJJm67A1 sa4fcjM7UmPlvzTe0o9NpsftFwaz5yf+HouyF9KfmRTUhTdD1SdTsehQxHv9zSxZ49oh DcODOH2boMZsUZRG6mPa4/dINJrs44797KOoSSzl5WNPyoTcqkOojhmaDikmoV3v8FDA z5sjidhKPkW1i/g6k4rYj/4QV4FYxdDNvj8Q/4xwS//XYB6uxFIQVnJ8Z9TqW+SReUoX d9MB7HXyvsJ3ouOQ3BsLeJbC0+EgEE+FlqJh0uPvpbJgbo+6QdwO9m4VyMVrC2W/4zu5 j8Rg== X-Gm-Message-State: AO0yUKVRjikTGyX5nn5NxvfGyUUOe62WX4R+3S25mdO8HS3bPGm4Z/yd RU7sJqwJZNVeYl0VvjrDFkvlUg/WNJP3xtE+haggq5DhAeQ9YpbPCfnLHso88HzRL4jORRluc/b u+Nh/4TFLapJxMPhkN/VLPqwrTXBRX/+Pu2w= X-Received: by 2002:a05:6808:1455:b0:386:cbb7:fd34 with SMTP id x21-20020a056808145500b00386cbb7fd34mr907304oiv.57.1679350641893; Mon, 20 Mar 2023 15:17:21 -0700 (PDT) X-Google-Smtp-Source: AK7set/RPMw/4dqYIQwLU8hOZP75EGO+7zdFukaYHz8sVO/zWvrU5i4JX8duj3sLervZuK2KiyF5Eg== X-Received: by 2002:a05:6808:1455:b0:386:cbb7:fd34 with SMTP id x21-20020a056808145500b00386cbb7fd34mr907277oiv.57.1679350641625; Mon, 20 Mar 2023 15:17:21 -0700 (PDT) Received: from halaney-x13s.redhat.com (104-53-165-62.lightspeed.stlsmo.sbcglobal.net. [104.53.165.62]) by smtp.gmail.com with ESMTPSA id q204-20020a4a33d5000000b0053853156b5csm4092465ooq.8.2023.03.20.15.17.19 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 20 Mar 2023 15:17:21 -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, mturquette@baylibre.com, sboyd@kernel.org, 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-clk@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 v2 12/12] net: stmmac: dwmac-qcom-ethqos: Add EMAC3 support Date: Mon, 20 Mar 2023 17:16:17 -0500 Message-Id: <20230320221617.236323-13-ahalaney@redhat.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230320221617.236323-1-ahalaney@redhat.com> References: <20230320221617.236323-1-ahalaney@redhat.com> MIME-Version: 1.0 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230320_151724_865384_D28AC48F X-CRM114-Status: GOOD ( 18.00 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Add the new programming sequence needed for EMAC3 based platforms such as the sc8280xp family. Signed-off-by: Andrew Halaney --- Changes since v1: * None .../stmicro/stmmac/dwmac-qcom-ethqos.c | 106 ++++++++++++++---- 1 file changed, 84 insertions(+), 22 deletions(-) diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c index 41e6f4fa92f3..1fe8563b9c0d 100644 --- a/drivers/net/ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c @@ -11,6 +11,7 @@ #define RGMII_IO_MACRO_CONFIG 0x0 #define SDCC_HC_REG_DLL_CONFIG 0x4 +#define SDCC_TEST_CTL 0x8 #define SDCC_HC_REG_DDR_CONFIG 0xC #define SDCC_HC_REG_DLL_CONFIG2 0x10 #define SDC4_STATUS 0x14 @@ -49,6 +50,7 @@ #define SDCC_DDR_CONFIG_EXT_PRG_RCLK_DLY GENMASK(26, 21) #define SDCC_DDR_CONFIG_EXT_PRG_RCLK_DLY_CODE GENMASK(29, 27) #define SDCC_DDR_CONFIG_EXT_PRG_RCLK_DLY_EN BIT(30) +#define SDCC_DDR_CONFIG_TCXO_CYCLES_CNT GENMASK(11, 9) #define SDCC_DDR_CONFIG_PRG_RCLK_DLY GENMASK(8, 0) /* SDCC_HC_REG_DLL_CONFIG2 fields */ @@ -79,6 +81,7 @@ struct ethqos_emac_driver_data { const struct ethqos_emac_por *por; unsigned int num_por; bool rgmii_config_loopback_en; + bool has_emac3; }; struct qcom_ethqos { @@ -92,6 +95,7 @@ struct qcom_ethqos { const struct ethqos_emac_por *por; unsigned int num_por; bool rgmii_config_loopback_en; + bool has_emac3; }; static int rgmii_readl(struct qcom_ethqos *ethqos, unsigned int offset) @@ -184,6 +188,7 @@ static const struct ethqos_emac_driver_data emac_v2_3_0_data = { .por = emac_v2_3_0_por, .num_por = ARRAY_SIZE(emac_v2_3_0_por), .rgmii_config_loopback_en = true, + .has_emac3 = false, }; static const struct ethqos_emac_por emac_v2_1_0_por[] = { @@ -199,6 +204,23 @@ static const struct ethqos_emac_driver_data emac_v2_1_0_data = { .por = emac_v2_1_0_por, .num_por = ARRAY_SIZE(emac_v2_1_0_por), .rgmii_config_loopback_en = false, + .has_emac3 = false, +}; + +static const struct ethqos_emac_por emac_v3_0_0_por[] = { + { .offset = RGMII_IO_MACRO_CONFIG, .value = 0x40c01343 }, + { .offset = SDCC_HC_REG_DLL_CONFIG, .value = 0x2004642c }, + { .offset = SDCC_HC_REG_DDR_CONFIG, .value = 0x80040800 }, + { .offset = SDCC_HC_REG_DLL_CONFIG2, .value = 0x00200000 }, + { .offset = SDCC_USR_CTL, .value = 0x00010800 }, + { .offset = RGMII_IO_MACRO_CONFIG2, .value = 0x00002060 }, +}; + +static const struct ethqos_emac_driver_data emac_v3_0_0_data = { + .por = emac_v3_0_0_por, + .num_por = ARRAY_SIZE(emac_v3_0_0_por), + .rgmii_config_loopback_en = false, + .has_emac3 = true, }; static int ethqos_dll_configure(struct qcom_ethqos *ethqos) @@ -222,11 +244,13 @@ static int ethqos_dll_configure(struct qcom_ethqos *ethqos) rgmii_updatel(ethqos, SDCC_DLL_CONFIG_DLL_EN, SDCC_DLL_CONFIG_DLL_EN, SDCC_HC_REG_DLL_CONFIG); - rgmii_updatel(ethqos, SDCC_DLL_MCLK_GATING_EN, - 0, SDCC_HC_REG_DLL_CONFIG); + if (!ethqos->has_emac3) { + rgmii_updatel(ethqos, SDCC_DLL_MCLK_GATING_EN, + 0, SDCC_HC_REG_DLL_CONFIG); - rgmii_updatel(ethqos, SDCC_DLL_CDR_FINE_PHASE, - 0, SDCC_HC_REG_DLL_CONFIG); + rgmii_updatel(ethqos, SDCC_DLL_CDR_FINE_PHASE, + 0, SDCC_HC_REG_DLL_CONFIG); + } /* Wait for CK_OUT_EN clear */ do { @@ -261,18 +285,20 @@ static int ethqos_dll_configure(struct qcom_ethqos *ethqos) rgmii_updatel(ethqos, SDCC_DLL_CONFIG2_DDR_CAL_EN, SDCC_DLL_CONFIG2_DDR_CAL_EN, SDCC_HC_REG_DLL_CONFIG2); - rgmii_updatel(ethqos, SDCC_DLL_CONFIG2_DLL_CLOCK_DIS, - 0, SDCC_HC_REG_DLL_CONFIG2); + if (!ethqos->has_emac3) { + rgmii_updatel(ethqos, SDCC_DLL_CONFIG2_DLL_CLOCK_DIS, + 0, SDCC_HC_REG_DLL_CONFIG2); - rgmii_updatel(ethqos, SDCC_DLL_CONFIG2_MCLK_FREQ_CALC, - 0x1A << 10, SDCC_HC_REG_DLL_CONFIG2); + rgmii_updatel(ethqos, SDCC_DLL_CONFIG2_MCLK_FREQ_CALC, + 0x1A << 10, SDCC_HC_REG_DLL_CONFIG2); - rgmii_updatel(ethqos, SDCC_DLL_CONFIG2_DDR_TRAFFIC_INIT_SEL, - BIT(2), SDCC_HC_REG_DLL_CONFIG2); + rgmii_updatel(ethqos, SDCC_DLL_CONFIG2_DDR_TRAFFIC_INIT_SEL, + BIT(2), SDCC_HC_REG_DLL_CONFIG2); - rgmii_updatel(ethqos, SDCC_DLL_CONFIG2_DDR_TRAFFIC_INIT_SW, - SDCC_DLL_CONFIG2_DDR_TRAFFIC_INIT_SW, - SDCC_HC_REG_DLL_CONFIG2); + rgmii_updatel(ethqos, SDCC_DLL_CONFIG2_DDR_TRAFFIC_INIT_SW, + SDCC_DLL_CONFIG2_DDR_TRAFFIC_INIT_SW, + SDCC_HC_REG_DLL_CONFIG2); + } return 0; } @@ -326,9 +352,17 @@ static int ethqos_rgmii_macro_init(struct qcom_ethqos *ethqos) RGMII_CONFIG2_RX_PROG_SWAP, RGMII_IO_MACRO_CONFIG2); - /* Set PRG_RCLK_DLY to 57 for 1.8 ns delay */ - rgmii_updatel(ethqos, SDCC_DDR_CONFIG_PRG_RCLK_DLY, - 57, SDCC_HC_REG_DDR_CONFIG); + /* PRG_RCLK_DLY = TCXO period * TCXO_CYCLES_CNT / 2 * RX delay ns, + * in practice this becomes PRG_RCLK_DLY = 52 * 4 / 2 * RX delay ns + */ + if (ethqos->has_emac3) + /* 0.9 ns */ + rgmii_updatel(ethqos, SDCC_DDR_CONFIG_PRG_RCLK_DLY, + 115, SDCC_HC_REG_DDR_CONFIG); + else + /* 1.8 ns */ + rgmii_updatel(ethqos, SDCC_DDR_CONFIG_PRG_RCLK_DLY, + 57, SDCC_HC_REG_DDR_CONFIG); rgmii_updatel(ethqos, SDCC_DDR_CONFIG_PRG_DLY_EN, SDCC_DDR_CONFIG_PRG_DLY_EN, SDCC_HC_REG_DDR_CONFIG); @@ -354,8 +388,15 @@ static int ethqos_rgmii_macro_init(struct qcom_ethqos *ethqos) BIT(6), RGMII_IO_MACRO_CONFIG); rgmii_updatel(ethqos, RGMII_CONFIG2_RSVD_CONFIG15, 0, RGMII_IO_MACRO_CONFIG2); - rgmii_updatel(ethqos, RGMII_CONFIG2_RX_PROG_SWAP, - 0, RGMII_IO_MACRO_CONFIG2); + + if (ethqos->has_emac3) + rgmii_updatel(ethqos, RGMII_CONFIG2_RX_PROG_SWAP, + RGMII_CONFIG2_RX_PROG_SWAP, + RGMII_IO_MACRO_CONFIG2); + else + rgmii_updatel(ethqos, RGMII_CONFIG2_RX_PROG_SWAP, + 0, RGMII_IO_MACRO_CONFIG2); + /* Write 0x5 to PRG_RCLK_DLY_CODE */ rgmii_updatel(ethqos, SDCC_DDR_CONFIG_EXT_PRG_RCLK_DLY_CODE, (BIT(29) | BIT(27)), SDCC_HC_REG_DDR_CONFIG); @@ -388,8 +429,13 @@ static int ethqos_rgmii_macro_init(struct qcom_ethqos *ethqos) RGMII_IO_MACRO_CONFIG); rgmii_updatel(ethqos, RGMII_CONFIG2_RSVD_CONFIG15, 0, RGMII_IO_MACRO_CONFIG2); - rgmii_updatel(ethqos, RGMII_CONFIG2_RX_PROG_SWAP, - 0, RGMII_IO_MACRO_CONFIG2); + if (ethqos->has_emac3) + rgmii_updatel(ethqos, RGMII_CONFIG2_RX_PROG_SWAP, + RGMII_CONFIG2_RX_PROG_SWAP, + RGMII_IO_MACRO_CONFIG2); + else + rgmii_updatel(ethqos, RGMII_CONFIG2_RX_PROG_SWAP, + 0, RGMII_IO_MACRO_CONFIG2); /* Write 0x5 to PRG_RCLK_DLY_CODE */ rgmii_updatel(ethqos, SDCC_DDR_CONFIG_EXT_PRG_RCLK_DLY_CODE, (BIT(29) | BIT(27)), SDCC_HC_REG_DDR_CONFIG); @@ -432,6 +478,17 @@ static int ethqos_configure(struct qcom_ethqos *ethqos) rgmii_updatel(ethqos, SDCC_DLL_CONFIG_PDN, SDCC_DLL_CONFIG_PDN, SDCC_HC_REG_DLL_CONFIG); + if (ethqos->has_emac3) { + if (ethqos->speed == SPEED_1000) { + rgmii_writel(ethqos, 0x1800000, SDCC_TEST_CTL); + rgmii_writel(ethqos, 0x2C010800, SDCC_USR_CTL); + rgmii_writel(ethqos, 0xA001, SDCC_HC_REG_DLL_CONFIG2); + } else { + rgmii_writel(ethqos, 0x40010800, SDCC_USR_CTL); + rgmii_writel(ethqos, 0xA001, SDCC_HC_REG_DLL_CONFIG2); + } + } + /* Clear DLL_RST */ rgmii_updatel(ethqos, SDCC_DLL_CONFIG_DLL_RST, 0, SDCC_HC_REG_DLL_CONFIG); @@ -451,7 +508,9 @@ static int ethqos_configure(struct qcom_ethqos *ethqos) SDCC_HC_REG_DLL_CONFIG); /* Set USR_CTL bit 26 with mask of 3 bits */ - rgmii_updatel(ethqos, GENMASK(26, 24), BIT(26), SDCC_USR_CTL); + if (!ethqos->has_emac3) + rgmii_updatel(ethqos, GENMASK(26, 24), BIT(26), + SDCC_USR_CTL); /* wait for DLL LOCK */ do { @@ -546,6 +605,7 @@ static int qcom_ethqos_probe(struct platform_device *pdev) ethqos->por = data->por; ethqos->num_por = data->num_por; ethqos->rgmii_config_loopback_en = data->rgmii_config_loopback_en; + ethqos->has_emac3 = data->has_emac3; ethqos->rgmii_clk = devm_clk_get(&pdev->dev, "rgmii"); if (IS_ERR(ethqos->rgmii_clk)) { @@ -564,7 +624,8 @@ static int qcom_ethqos_probe(struct platform_device *pdev) plat_dat->bsp_priv = ethqos; plat_dat->fix_mac_speed = ethqos_fix_mac_speed; plat_dat->dump_debug_regs = rgmii_dump; - plat_dat->has_gmac4 = 1; + plat_dat->has_gmac4 = !data->has_emac3; + plat_dat->has_emac3 = data->has_emac3; plat_dat->pmt = 1; plat_dat->tso_en = of_property_read_bool(np, "snps,tso"); if (of_device_is_compatible(np, "qcom,qcs404-ethqos")) @@ -603,6 +664,7 @@ static int qcom_ethqos_remove(struct platform_device *pdev) static const struct of_device_id qcom_ethqos_match[] = { { .compatible = "qcom,qcs404-ethqos", .data = &emac_v2_3_0_data}, { .compatible = "qcom,sm8150-ethqos", .data = &emac_v2_1_0_data}, + { .compatible = "qcom,sc8280xp-ethqos", &emac_v3_0_0_data}, { } }; MODULE_DEVICE_TABLE(of, qcom_ethqos_match);