From patchwork Mon Mar 13 03:46:43 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Guo Samin X-Patchwork-Id: 13171939 X-Patchwork-Delegate: kuba@kernel.org 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 9DB29C6FD19 for ; Mon, 13 Mar 2023 03:47:13 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230129AbjCMDrK (ORCPT ); Sun, 12 Mar 2023 23:47:10 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34528 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230047AbjCMDqz (ORCPT ); Sun, 12 Mar 2023 23:46:55 -0400 Received: from fd01.gateway.ufhost.com (fd01.gateway.ufhost.com [61.152.239.71]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E9E9E3B230; Sun, 12 Mar 2023 20:46:53 -0700 (PDT) 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 B970524E3B7; Mon, 13 Mar 2023 11:46:52 +0800 (CST) Received: from EXMBX162.cuchost.com (172.16.6.72) by EXMBX165.cuchost.com (172.16.6.75) with Microsoft SMTP Server (TLS) id 15.0.1497.42; Mon, 13 Mar 2023 11:46:52 +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, 13 Mar 2023 11:46:51 +0800 From: Samin Guo 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 , Samin Guo Subject: [PATCH v6 6/8] net: stmmac: starfive_dmac: Add phy interface settings Date: Mon, 13 Mar 2023 11:46:43 +0800 Message-ID: <20230313034645.5469-7-samin.guo@starfivetech.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20230313034645.5469-1-samin.guo@starfivetech.com> References: <20230313034645.5469-1-samin.guo@starfivetech.com> MIME-Version: 1.0 X-Originating-IP: [171.223.208.138] X-ClientProxiedBy: EXCAS061.cuchost.com (172.16.6.21) To EXMBX162.cuchost.com (172.16.6.72) X-YovoleRuleAgent: yovoleflag Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-Delegate: kuba@kernel.org dwmac supports multiple modess. When working under rmii and rgmii, you need to set different phy interfaces. According to the dwmac document, when working in rmii, it needs to be set to 0x4, and rgmii needs to be set to 0x1. The phy interface needs to be set in syscon, the format is as follows: starfive,syscon: <&syscon, offset, shift> Signed-off-by: Samin Guo Tested-by: Tommaso Merciai --- .../ethernet/stmicro/stmmac/dwmac-starfive.c | 47 +++++++++++++++++++ 1 file changed, 47 insertions(+) diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-starfive.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-starfive.c index ef5a769b1c75..84690c8f0250 100644 --- a/drivers/net/ethernet/stmicro/stmmac/dwmac-starfive.c +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-starfive.c @@ -13,6 +13,10 @@ #include "stmmac_platform.h" +#define STARFIVE_DWMAC_PHY_INFT_RGMII 0x1 +#define STARFIVE_DWMAC_PHY_INFT_RMII 0x4 +#define STARFIVE_DWMAC_PHY_INFT_FIELD 0x7U + struct starfive_dwmac { struct device *dev; struct clk *clk_tx; @@ -44,6 +48,43 @@ static void starfive_dwmac_fix_mac_speed(void *priv, unsigned int speed) dev_err(dwmac->dev, "failed to set tx rate %lu\n", rate); } +static int starfive_dwmac_set_mode(struct plat_stmmacenet_data *plat_dat) +{ + struct starfive_dwmac *dwmac = plat_dat->bsp_priv; + struct regmap *regmap; + unsigned int args[2]; + unsigned int mode; + + switch (plat_dat->interface) { + case PHY_INTERFACE_MODE_RMII: + mode = STARFIVE_DWMAC_PHY_INFT_RMII; + break; + + case PHY_INTERFACE_MODE_RGMII: + case PHY_INTERFACE_MODE_RGMII_ID: + mode = STARFIVE_DWMAC_PHY_INFT_RGMII; + break; + + default: + dev_err(dwmac->dev, "unsupported interface %d\n", + plat_dat->interface); + return -EINVAL; + } + + regmap = syscon_regmap_lookup_by_phandle_args(dwmac->dev->of_node, + "starfive,syscon", + 2, args); + if (IS_ERR(regmap)) { + dev_err(dwmac->dev, "syscon regmap failed.\n"); + return -ENXIO; + } + + /* args[0]:offset args[1]: shift */ + return regmap_update_bits(regmap, args[0], + STARFIVE_DWMAC_PHY_INFT_FIELD << args[1], + mode << args[1]); +} + static int starfive_dwmac_probe(struct platform_device *pdev) { struct plat_stmmacenet_data *plat_dat; @@ -89,6 +130,12 @@ static int starfive_dwmac_probe(struct platform_device *pdev) plat_dat->bsp_priv = dwmac; plat_dat->dma_cfg->dche = true; + err = starfive_dwmac_set_mode(plat_dat); + if (err) { + dev_err(&pdev->dev, "dwmac set mode failed.\n"); + return err; + } + err = stmmac_dvr_probe(&pdev->dev, plat_dat, &stmmac_res); if (err) { stmmac_remove_config_dt(pdev, plat_dat);