From patchwork Mon Apr 17 10:02:50 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Samin Guo X-Patchwork-Id: 673990 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 CED71C77B70 for ; Mon, 17 Apr 2023 10:17:55 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231149AbjDQKRy (ORCPT ); Mon, 17 Apr 2023 06:17:54 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51818 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229969AbjDQKRq (ORCPT ); Mon, 17 Apr 2023 06:17:46 -0400 Received: from fd01.gateway.ufhost.com (fd01.gateway.ufhost.com [61.152.239.71]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 3A58F7DA8; Mon, 17 Apr 2023 03:16:51 -0700 (PDT) Received: from EXMBX166.cuchost.com (unknown [175.102.18.54]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client CN "EXMBX166", Issuer "EXMBX166" (not verified)) by fd01.gateway.ufhost.com (Postfix) with ESMTP id 471FB24E2EF; Mon, 17 Apr 2023 18:02:59 +0800 (CST) Received: from EXMBX162.cuchost.com (172.16.6.72) by EXMBX166.cuchost.com (172.16.6.76) with Microsoft SMTP Server (TLS) id 15.0.1497.42; Mon, 17 Apr 2023 18:02:59 +0800 Received: from starfive-sdk.starfivetech.com (171.223.208.138) by EXMBX162.cuchost.com (172.16.6.72) with Microsoft SMTP Server (TLS) id 15.0.1497.42; Mon, 17 Apr 2023 18:02:58 +0800 From: Samin Guo To: , , , CC: "David S . Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Rob Herring , Krzysztof Kozlowski , Emil Renner Berthing , Pedro Moreira , Richard Cochran , Conor Dooley , Paul Walmsley , Palmer Dabbelt , Albert Ou , Andrew Lunn , Heiner Kallweit , Peter Geis , Yanhong Wang , Samin Guo , Tommaso Merciai Subject: [-net-next v12 5/6] net: stmmac: Add glue layer for StarFive JH7110 SoC Date: Mon, 17 Apr 2023 18:02:50 +0800 Message-ID: <20230417100251.11871-6-samin.guo@starfivetech.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20230417100251.11871-1-samin.guo@starfivetech.com> References: <20230417100251.11871-1-samin.guo@starfivetech.com> MIME-Version: 1.0 X-Originating-IP: [171.223.208.138] X-ClientProxiedBy: EXCAS064.cuchost.com (172.16.6.24) To EXMBX162.cuchost.com (172.16.6.72) X-YovoleRuleAgent: yovoleflag Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org This adds StarFive dwmac driver support on the StarFive JH7110 SoC. Tested-by: Tommaso Merciai Co-developed-by: Emil Renner Berthing Signed-off-by: Emil Renner Berthing Signed-off-by: Samin Guo --- MAINTAINERS | 1 + drivers/net/ethernet/stmicro/stmmac/Kconfig | 12 ++ drivers/net/ethernet/stmicro/stmmac/Makefile | 1 + .../ethernet/stmicro/stmmac/dwmac-starfive.c | 123 ++++++++++++++++++ 4 files changed, 137 insertions(+) create mode 100644 drivers/net/ethernet/stmicro/stmmac/dwmac-starfive.c diff --git a/MAINTAINERS b/MAINTAINERS index 6b6b67468b8f..46b366456cee 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -19910,6 +19910,7 @@ M: Emil Renner Berthing M: Samin Guo S: Maintained F: Documentation/devicetree/bindings/net/starfive,jh7110-dwmac.yaml +F: drivers/net/ethernet/stmicro/stmmac/dwmac-starfive.c STARFIVE JH7100 CLOCK DRIVERS M: Emil Renner Berthing diff --git a/drivers/net/ethernet/stmicro/stmmac/Kconfig b/drivers/net/ethernet/stmicro/stmmac/Kconfig index f77511fe4e87..5f5a997f21f3 100644 --- a/drivers/net/ethernet/stmicro/stmmac/Kconfig +++ b/drivers/net/ethernet/stmicro/stmmac/Kconfig @@ -165,6 +165,18 @@ config DWMAC_SOCFPGA for the stmmac device driver. This driver is used for arria5 and cyclone5 FPGA SoCs. +config DWMAC_STARFIVE + tristate "StarFive dwmac support" + depends on OF && (ARCH_STARFIVE || COMPILE_TEST) + select MFD_SYSCON + default m if ARCH_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 JH7110 + ethernet controller. + config DWMAC_STI tristate "STi GMAC support" default ARCH_STI diff --git a/drivers/net/ethernet/stmicro/stmmac/Makefile b/drivers/net/ethernet/stmicro/stmmac/Makefile index 057e4bab5c08..8738fdbb4b2d 100644 --- a/drivers/net/ethernet/stmicro/stmmac/Makefile +++ b/drivers/net/ethernet/stmicro/stmmac/Makefile @@ -23,6 +23,7 @@ obj-$(CONFIG_DWMAC_OXNAS) += dwmac-oxnas.o obj-$(CONFIG_DWMAC_QCOM_ETHQOS) += dwmac-qcom-ethqos.o obj-$(CONFIG_DWMAC_ROCKCHIP) += dwmac-rk.o obj-$(CONFIG_DWMAC_SOCFPGA) += dwmac-altr-socfpga.o +obj-$(CONFIG_DWMAC_STARFIVE) += dwmac-starfive.o obj-$(CONFIG_DWMAC_STI) += dwmac-sti.o obj-$(CONFIG_DWMAC_STM32) += dwmac-stm32.o obj-$(CONFIG_DWMAC_SUNXI) += dwmac-sunxi.o diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-starfive.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-starfive.c new file mode 100644 index 000000000000..4963d4008485 --- /dev/null +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-starfive.c @@ -0,0 +1,123 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * StarFive DWMAC platform driver + * + * Copyright (C) 2021 Emil Renner Berthing + * Copyright (C) 2022 StarFive Technology Co., Ltd. + * + */ + +#include +#include +#include + +#include "stmmac_platform.h" + +struct starfive_dwmac { + struct device *dev; + struct clk *clk_tx; +}; + +static void starfive_dwmac_fix_mac_speed(void *priv, unsigned int speed) +{ + struct starfive_dwmac *dwmac = priv; + unsigned long rate; + int err; + + rate = clk_get_rate(dwmac->clk_tx); + + 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); + break; + } + + err = clk_set_rate(dwmac->clk_tx, rate); + if (err) + dev_err(dwmac->dev, "failed to set tx rate %lu\n", rate); +} + +static int starfive_dwmac_probe(struct platform_device *pdev) +{ + struct plat_stmmacenet_data *plat_dat; + struct stmmac_resources stmmac_res; + struct starfive_dwmac *dwmac; + struct clk *clk_gtx; + int err; + + err = stmmac_get_platform_resources(pdev, &stmmac_res); + if (err) + return dev_err_probe(&pdev->dev, err, + "failed to get resources\n"); + + plat_dat = stmmac_probe_config_dt(pdev, stmmac_res.mac); + if (IS_ERR(plat_dat)) + return dev_err_probe(&pdev->dev, PTR_ERR(plat_dat), + "dt configuration failed\n"); + + dwmac = devm_kzalloc(&pdev->dev, sizeof(*dwmac), GFP_KERNEL); + if (!dwmac) + return -ENOMEM; + + 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"); + + clk_gtx = devm_clk_get_enabled(&pdev->dev, "gtx"); + if (IS_ERR(clk_gtx)) + return dev_err_probe(&pdev->dev, PTR_ERR(clk_gtx), + "error getting gtx clock\n"); + + /* Generally, the rgmii_tx clock is provided by the internal clock, + * which needs to match the corresponding clock frequency according + * to different speeds. If the rgmii_tx clock is provided by the + * external rgmii_rxin, there is no need to configure the clock + * internally, because rgmii_rxin will be adaptively adjusted. + */ + if (!device_property_read_bool(&pdev->dev, "starfive,tx-use-rgmii-clk")) + plat_dat->fix_mac_speed = starfive_dwmac_fix_mac_speed; + + dwmac->dev = &pdev->dev; + 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_dwmac_match[] = { + { .compatible = "starfive,jh7110-dwmac" }, + { /* sentinel */ } +}; +MODULE_DEVICE_TABLE(of, starfive_dwmac_match); + +static struct platform_driver starfive_dwmac_driver = { + .probe = starfive_dwmac_probe, + .remove = stmmac_pltfr_remove, + .driver = { + .name = "starfive-dwmac", + .pm = &stmmac_pltfr_pm_ops, + .of_match_table = starfive_dwmac_match, + }, +}; +module_platform_driver(starfive_dwmac_driver); + +MODULE_LICENSE("GPL"); +MODULE_DESCRIPTION("StarFive DWMAC platform driver"); +MODULE_AUTHOR("Emil Renner Berthing "); +MODULE_AUTHOR("Samin Guo ");