From patchwork Fri Dec 16 07:06:30 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: yanhong wang X-Patchwork-Id: 13074817 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 DD371C4167B for ; Fri, 16 Dec 2022 07:06:44 +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-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-Transfer-Encoding:Content-ID:Content-Description:Resent-Date :Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=5mZ77CMiNhEYkd3wptZRleFe3CBCzalPJee+T6kdyoo=; b=vxydKkyf6IegONUS+ycaDA2MsO aOu/NUHtSiGoL8PlzElqVZjYN4nTpA32AJD0dBCe0GRANt5/Wbw8O9WhVe3pCq9W48HTMwSM6vo+F XC5EtRVxZcMJstSebllAO8FLzafnPYROeUN6jYkVLai7jVW+sFwoLC4d/rNxIjYVnrY74+wQAhuhj ockeOBT9eafQGxIFOWgh/sLX0w0DzoaZGOrX2UDcib0r1hpQUwKYWV/QTgvsfjKFb3MlUqSDPh4dl PRRbeLQmBzotWC1Uc6K4AzQYm+Pg9EuBN+8D/SzWcnzPR8NAZwukdWHDztU+pcjzMZkTcIpKM3hH1 zsvDPaxg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1p64nl-00DJYr-2B; Fri, 16 Dec 2022 07:06:37 +0000 Received: from fd01.gateway.ufhost.com ([61.152.239.71]) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1p64nf-00DJDF-8y for linux-riscv@lists.infradead.org; Fri, 16 Dec 2022 07:06:33 +0000 Received: from EXMBX165.cuchost.com (unknown [175.102.18.54]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client CN "EXMBX165", Issuer "EXMBX165" (not verified)) by fd01.gateway.ufhost.com (Postfix) with ESMTP id 5823024E39B; Fri, 16 Dec 2022 15:05:44 +0800 (CST) Received: from EXMBX173.cuchost.com (172.16.6.93) by EXMBX165.cuchost.com (172.16.6.75) with Microsoft SMTP Server (TLS) id 15.0.1497.42; Fri, 16 Dec 2022 15:05:44 +0800 Received: from wyh-VirtualBox.starfivetech.com (171.223.208.138) by EXMBX173.cuchost.com (172.16.6.93) with Microsoft SMTP Server (TLS) id 15.0.1497.42; Fri, 16 Dec 2022 15:05:43 +0800 From: Yanhong Wang To: , , , CC: "David S . Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Rob Herring , Krzysztof Kozlowski , Emil Renner Berthing , Richard Cochran , Andrew Lunn , Heiner Kallweit , Peter Geis , Yanhong Wang Subject: [PATCH v2 7/9] net: stmmac: Add glue layer for StarFive JH71x0 SoCs Date: Fri, 16 Dec 2022 15:06:30 +0800 Message-ID: <20221216070632.11444-8-yanhong.wang@starfivetech.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20221216070632.11444-1-yanhong.wang@starfivetech.com> References: <20221216070632.11444-1-yanhong.wang@starfivetech.com> MIME-Version: 1.0 X-Originating-IP: [171.223.208.138] X-ClientProxiedBy: EXCAS064.cuchost.com (172.16.6.24) To EXMBX173.cuchost.com (172.16.6.93) X-YovoleRuleAgent: yovoleflag X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20221215_230631_657082_331BA184 X-CRM114-Status: GOOD ( 22.18 ) X-BeenThere: linux-riscv@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-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org This adds StarFive dwmac driver support on the StarFive JH71x0 SoCs. Signed-off-by: Yanhong Wang Co-developed-by: Emil Renner Berthing Signed-off-by: Emil Renner Berthing --- MAINTAINERS | 1 + drivers/net/ethernet/stmicro/stmmac/Kconfig | 12 ++ drivers/net/ethernet/stmicro/stmmac/Makefile | 1 + .../stmicro/stmmac/dwmac-starfive-plat.c | 167 ++++++++++++++++++ 4 files changed, 181 insertions(+) create mode 100644 drivers/net/ethernet/stmicro/stmmac/dwmac-starfive-plat.c diff --git a/MAINTAINERS b/MAINTAINERS index 1ff68b8524d2..c7d3229330aa 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -19609,6 +19609,7 @@ F: include/dt-bindings/clock/starfive* STARFIVE DWMAC GLUE LAYER M: Yanhong Wang S: Maintained +F: Documentation/devicetree/bindings/net/dwmac-starfive-plat.c F: Documentation/devicetree/bindings/net/motorcomm,yt8531.yaml F: Documentation/devicetree/bindings/net/starfive,jh71x0-dwmac.yaml diff --git a/drivers/net/ethernet/stmicro/stmmac/Kconfig b/drivers/net/ethernet/stmicro/stmmac/Kconfig index 31ff35174034..ca3d4dd95a95 100644 --- a/drivers/net/ethernet/stmicro/stmmac/Kconfig +++ b/drivers/net/ethernet/stmicro/stmmac/Kconfig @@ -235,6 +235,18 @@ config DWMAC_INTEL_PLAT the stmmac device driver. This driver is used for the Intel Keem Bay SoC. +config DWMAC_STARFIVE_PLAT + tristate "StarFive dwmac support" + depends on OF && COMMON_CLK + depends on STMMAC_ETH + default SOC_STARFIVE + help + Support for ethernet controllers on StarFive RISC-V SoCs + + This selects the StarFive platform specific glue layer support for + the stmmac device driver. This driver is used for StarFive JH71x0 + ethernet controller. + config DWMAC_VISCONTI tristate "Toshiba Visconti DWMAC support" default ARCH_VISCONTI diff --git a/drivers/net/ethernet/stmicro/stmmac/Makefile b/drivers/net/ethernet/stmicro/stmmac/Makefile index d4e12e9ace4f..a63ab0ab5071 100644 --- a/drivers/net/ethernet/stmicro/stmmac/Makefile +++ b/drivers/net/ethernet/stmicro/stmmac/Makefile @@ -31,6 +31,7 @@ obj-$(CONFIG_DWMAC_DWC_QOS_ETH) += dwmac-dwc-qos-eth.o obj-$(CONFIG_DWMAC_INTEL_PLAT) += dwmac-intel-plat.o obj-$(CONFIG_DWMAC_GENERIC) += dwmac-generic.o obj-$(CONFIG_DWMAC_IMX8) += dwmac-imx.o +obj-$(CONFIG_DWMAC_STARFIVE_PLAT) += dwmac-starfive-plat.o obj-$(CONFIG_DWMAC_VISCONTI) += dwmac-visconti.o stmmac-platform-objs:= stmmac_platform.o dwmac-altr-socfpga-objs := altr_tse_pcs.o dwmac-socfpga.o diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-starfive-plat.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-starfive-plat.c new file mode 100644 index 000000000000..f8b68dd53c91 --- /dev/null +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-starfive-plat.c @@ -0,0 +1,167 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * StarFive DWMAC platform driver + * + * Copyright(C) 2022 StarFive Technology Co., Ltd. + * + */ + +#include +#include +#include +#include "stmmac_platform.h" + +struct starfive_dwmac { + struct device *dev; + struct clk *clk_tx; + struct clk *clk_gtx; + struct clk *clk_gtxc; +}; + +#define JH7100_SYSMAIN_REGISTER28 0x70 +/* The value below is not a typo, just really bad naming by StarFive ¯\_(ツ)_/¯ */ +#define JH7100_SYSMAIN_REGISTER49 0xc8 + +static int starfive_eth_plat_jh7100_syscon_init(struct device *dev) +{ + struct device_node *np = dev->of_node; + struct regmap *sysmain; + u32 gtxclk_dlychain; + int ret; + + sysmain = syscon_regmap_lookup_by_phandle(np, "starfive,syscon"); + if (IS_ERR(sysmain)) + return dev_err_probe(dev, PTR_ERR(sysmain), + "error getting sysmain registers\n"); + + /* Choose RGMII interface to the phy. + * TODO: support other interfaces once we know the meaning of other + * values in the register + */ + ret = regmap_update_bits(sysmain, JH7100_SYSMAIN_REGISTER28, 0x7, 1); + if (ret) + return dev_err_probe(dev, ret, "error selecting gmac interface\n"); + + if (!of_property_read_u32(np, "starfive,gtxclk-dlychain", >xclk_dlychain)) { + ret = regmap_write(sysmain, JH7100_SYSMAIN_REGISTER49, gtxclk_dlychain); + if (ret) + return dev_err_probe(dev, ret, "error selecting gtxclk delay chain\n"); + } + + return 0; +} + +static void starfive_eth_plat_fix_mac_speed(void *priv, unsigned int speed) +{ + struct starfive_dwmac *dwmac = priv; + unsigned long rate; + int err; + + switch (speed) { + case SPEED_1000: + rate = 125000000; + break; + case SPEED_100: + rate = 25000000; + break; + case SPEED_10: + rate = 2500000; + break; + default: + dev_err(dwmac->dev, "invalid speed %u\n", speed); + return; + } + + err = clk_set_rate(dwmac->clk_gtx, rate); + if (err) + dev_err(dwmac->dev, "failed to set tx rate %lu\n", rate); +} + +static int starfive_eth_plat_probe(struct platform_device *pdev) +{ + struct plat_stmmacenet_data *plat_dat; + struct stmmac_resources stmmac_res; + struct starfive_dwmac *dwmac; + int (*syscon_init)(struct device *dev); + int err; + + err = stmmac_get_platform_resources(pdev, &stmmac_res); + if (err) + return err; + + plat_dat = stmmac_probe_config_dt(pdev, stmmac_res.mac); + if (IS_ERR(plat_dat)) { + dev_err(&pdev->dev, "dt configuration failed\n"); + return PTR_ERR(plat_dat); + } + + dwmac = devm_kzalloc(&pdev->dev, sizeof(*dwmac), GFP_KERNEL); + if (!dwmac) + return -ENOMEM; + + syscon_init = of_device_get_match_data(&pdev->dev); + if (syscon_init) { + err = syscon_init(&pdev->dev); + if (err) + return err; + } + + dwmac->clk_tx = devm_clk_get_enabled(&pdev->dev, "tx"); + if (IS_ERR(dwmac->clk_tx)) + return dev_err_probe(&pdev->dev, PTR_ERR(dwmac->clk_tx), + "error getting tx clock\n"); + + dwmac->clk_gtx = devm_clk_get_enabled(&pdev->dev, "gtx"); + if (IS_ERR(dwmac->clk_gtx)) + return dev_err_probe(&pdev->dev, PTR_ERR(dwmac->clk_gtx), + "error getting gtx clock\n"); + + /* Only StarFive JH7110 SoC support gtxc clock */ + if (of_device_is_compatible(pdev->dev.of_node, "starfive,jh7110-dwmac")) { + dwmac->clk_gtxc = devm_clk_get_enabled(&pdev->dev, "gtxc"); + if (IS_ERR(dwmac->clk_gtxc)) + return dev_err_probe(&pdev->dev, PTR_ERR(dwmac->clk_gtxc), + "error getting gtxc clock\n"); + } + + dwmac->dev = &pdev->dev; + plat_dat->fix_mac_speed = starfive_eth_plat_fix_mac_speed; + plat_dat->init = NULL; + plat_dat->bsp_priv = dwmac; + plat_dat->dma_cfg->dche = true; + + err = stmmac_dvr_probe(&pdev->dev, plat_dat, &stmmac_res); + if (err) { + stmmac_remove_config_dt(pdev, plat_dat); + return err; + } + + return 0; +} + +static const struct of_device_id starfive_eth_plat_match[] = { + { + .compatible = "starfive,jh7110-dwmac" + }, + { + .compatible = "starfive,jh7100-dwmac", + .data = starfive_eth_plat_jh7100_syscon_init, + }, + { } +}; + +static struct platform_driver starfive_eth_plat_driver = { + .probe = starfive_eth_plat_probe, + .remove = stmmac_pltfr_remove, + .driver = { + .name = "starfive-eth-plat", + .pm = &stmmac_pltfr_pm_ops, + .of_match_table = starfive_eth_plat_match, + }, +}; + +module_platform_driver(starfive_eth_plat_driver); + +MODULE_LICENSE("GPL"); +MODULE_DESCRIPTION("StarFive DWMAC platform driver"); +MODULE_AUTHOR("Yanhong Wang ");