From mboxrd@z Thu Jan 1 00:00:00 1970 Delivery-date: Wed, 11 Jan 2023 19:24:20 +0100 Received: from metis.ext.pengutronix.de ([2001:67c:670:201:290:27ff:fe1d:cc33]) by lore.white.stw.pengutronix.de with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94.2) (envelope-from ) id 1pFflt-0093nV-C3 for lore@lore.pengutronix.de; Wed, 11 Jan 2023 19:24:20 +0100 Received: from bombadil.infradead.org ([2607:7c80:54:3::133]) by metis.ext.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1pFflr-0002d2-AT for lore@pengutronix.de; Wed, 11 Jan 2023 19:24:20 +0100 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: MIME-Version:References:In-Reply-To:Message-Id:Date:Subject:To:From:Reply-To: Cc:Content-Type:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=qQWgZa+K0lbCzz05dMIlaYRsJmEYPcG5m2VCVqNMbGU=; b=rnX4mXDkOC38lc7BqXl7vJiGWy WFoVJ1a69eBvFekQdR8TwQ8NWxAeJdz6KhFnoX+iga+3cw3UV0YGqpwK5zVz72UWi0qUwguxkFFsc A8Ji+Jj57R92POgiyUPEi5r1TDj8hhcOR+qn8NBu82qmL4YyfyRuNkb9rV986Y8Ntvtpm/LqNSgYG 17xgNtthO3X7SxhKHmOWggD1ECdR5iS/H9KA+L5d5UZlRk7c7jQAQbaLV2ZNWCp1fLpHyHz9SHTKf E039bUrxwtlUV2f7yX+SWePK655VL0suQZjv2Q24euyD7UiiM+0DsZi9D2fcak97rdvhcmcDJqfST 6grSK+CA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1pFfkV-00CbHP-5Z; Wed, 11 Jan 2023 18:22:55 +0000 Received: from ns.lynxeye.de ([87.118.118.114] helo=lynxeye.de) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1pFfkK-00CbCt-Ua for barebox@lists.infradead.org; Wed, 11 Jan 2023 18:22:47 +0000 Received: by lynxeye.de (Postfix, from userid 501) id 4672CE7400A; Wed, 11 Jan 2023 19:22:09 +0100 (CET) Received: from astat.fritz.box (a89-183-231-133.net-htp.de [89.183.231.133]) by lynxeye.de (Postfix) with ESMTPA id 48377E74012 for ; Wed, 11 Jan 2023 19:22:06 +0100 (CET) From: Lucas Stach To: barebox@lists.infradead.org Date: Wed, 11 Jan 2023 19:21:57 +0100 Message-Id: <20230111182157.1702865-3-l.stach@pengutronix.de> X-Mailer: git-send-email 2.39.0 In-Reply-To: <20230111182157.1702865-1-l.stach@pengutronix.de> References: <20230111182157.1702865-1-l.stach@pengutronix.de> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230111_102245_318251_9C32BA62 X-CRM114-Status: GOOD ( 19.17 ) X-BeenThere: barebox@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "barebox" X-SA-Exim-Connect-IP: 2607:7c80:54:3::133 X-SA-Exim-Mail-From: barebox-bounces+lore=pengutronix.de@lists.infradead.org X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on metis.ext.pengutronix.de X-Spam-Level: X-Spam-Status: No, score=-4.8 required=4.0 tests=AWL,BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED,SPF_HELO_NONE,SPF_NONE autolearn=unavailable autolearn_force=no version=3.4.2 Subject: [PATCH 3/3] net: eqos: add i.MX8MP support X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on metis.ext.pengutronix.de) This adds the platform glue for the Designware EQOS ethernet interface as implemented on the i.MX8MP SoC. Signed-off-by: Lucas Stach --- drivers/net/Kconfig | 8 ++ drivers/net/Makefile | 1 + drivers/net/designware_imx8.c | 194 ++++++++++++++++++++++++++++++++++ 3 files changed, 203 insertions(+) create mode 100644 drivers/net/designware_imx8.c diff --git a/drivers/net/Kconfig b/drivers/net/Kconfig index 2dafd9c7a8b9..e871b7e11af7 100644 --- a/drivers/net/Kconfig +++ b/drivers/net/Kconfig @@ -107,6 +107,14 @@ config DRIVER_NET_DESIGNWARE_EQOS This option enables support for the Synopsys Designware Ethernet Quality-of-Service (GMAC4). +config DRIVER_NET_DESIGNWARE_IMX8 + bool "Designware EQOS i.MX8 Ethernet driver" + depends on HAS_DMA && COMMON_CLK && OFTREE && (ARCH_IMX8M || COMPILE_TEST) + select DRIVER_NET_DESIGNWARE_EQOS + help + This option enables support for the Designware EQOS MAC implemented on + the NXP i.MX8 SoCs. + config DRIVER_NET_DESIGNWARE_STM32 bool "STM32 Designware Ethernet driver" depends on HAS_DMA && COMMON_CLK && OFTREE && (ARCH_STM32MP || COMPILE_TEST) diff --git a/drivers/net/Makefile b/drivers/net/Makefile index 7ff330a2bf42..6a44a12bf88a 100644 --- a/drivers/net/Makefile +++ b/drivers/net/Makefile @@ -15,6 +15,7 @@ obj-$(CONFIG_DRIVER_NET_DESIGNWARE_GENERIC) += designware_generic.o obj-$(CONFIG_DRIVER_NET_DESIGNWARE_SOCFPGA) += designware_socfpga.o obj-$(CONFIG_DRIVER_NET_DESIGNWARE_STARFIVE) += designware_starfive.o obj-$(CONFIG_DRIVER_NET_DESIGNWARE_EQOS) += designware_eqos.o +obj-$(CONFIG_DRIVER_NET_DESIGNWARE_IMX8) += designware_imx8.o obj-$(CONFIG_DRIVER_NET_DESIGNWARE_STM32) += designware_stm32.o obj-$(CONFIG_DRIVER_NET_DESIGNWARE_TEGRA186) += designware_tegra186.o obj-$(CONFIG_DRIVER_NET_DESIGNWARE_ROCKCHIP) += designware_rockchip.o diff --git a/drivers/net/designware_imx8.c b/drivers/net/designware_imx8.c new file mode 100644 index 000000000000..e64fc57c3e13 --- /dev/null +++ b/drivers/net/designware_imx8.c @@ -0,0 +1,194 @@ +// SPDX-License-Identifier: GPL-2.0-only + +#include +#include +#include +#include +#include +#include + +#include "designware_eqos.h" + +#define GPR_ENET_QOS_INTF_MODE_MASK GENMASK(21, 16) +#define GPR_ENET_QOS_INTF_SEL_MII (0x0 << 16) +#define GPR_ENET_QOS_INTF_SEL_RGMII (0x1 << 16) +#define GPR_ENET_QOS_INTF_SEL_RMII (0x4 << 16) +#define GPR_ENET_QOS_CLK_GEN_EN BIT(19) +#define GPR_ENET_QOS_CLK_TX_CLK_SEL BIT(20) +#define GPR_ENET_QOS_RGMII_EN BIT(21) + + +struct eqos_imx8_priv { + struct device_d *dev; + struct clk_bulk_data *clks; + int num_clks; + struct regmap *intf_regmap; + u32 intf_reg_off; + bool rmii_refclk_ext; +}; + +enum { CLK_STMMACETH, CLK_PCLK, CLK_PTP_REF, CLK_TX}; +static const struct clk_bulk_data imx8_clks[] = { + [CLK_STMMACETH] = { .id = "stmmaceth" }, + [CLK_PCLK] = { .id = "pclk" }, + [CLK_PTP_REF] = { .id = "ptp_ref" }, + [CLK_TX] = { .id = "tx" }, +}; + +static unsigned long eqos_get_csr_clk_rate_imx8(struct eqos *eqos) +{ + struct eqos_imx8_priv *priv = eqos->priv; + + return clk_get_rate(priv->clks[CLK_PCLK].clk); +} + + +static void eqos_adjust_link_imx8(struct eth_device *edev) +{ + struct eqos *eqos = edev->priv; + struct eqos_imx8_priv *priv = eqos->priv; + unsigned long rate; + int ret; + + switch (edev->phydev->speed) { + case SPEED_10: + rate = 2500000; + break; + case SPEED_100: + rate = 25000000; + break; + case SPEED_1000: + rate = 125000000; + break; + default: + dev_err(priv->dev, "unknown speed value for GMAC speed=%d", + edev->phydev->speed); + return; + } + + ret = clk_set_rate(priv->clks[CLK_TX].clk, rate); + if (ret) + dev_err(priv->dev, "set TX clk rate %ld failed %d\n", + rate, ret); + + eqos_adjust_link(edev); +} + +static void eqos_imx8_set_interface_mode(struct eqos *eqos) +{ + struct eqos_imx8_priv *priv = eqos->priv; + struct device_node *np = priv->dev->device_node; + int val; + + if (!of_device_is_compatible(np, "nxp,imx8mp-dwmac-eqos")) + return; + + switch (eqos->interface) { + case PHY_INTERFACE_MODE_MII: + val = GPR_ENET_QOS_INTF_SEL_MII; + break; + case PHY_INTERFACE_MODE_RMII: + val = GPR_ENET_QOS_INTF_SEL_RMII; + val |= (priv->rmii_refclk_ext ? 0 : GPR_ENET_QOS_CLK_TX_CLK_SEL); + break; + case PHY_INTERFACE_MODE_RGMII: + case PHY_INTERFACE_MODE_RGMII_ID: + case PHY_INTERFACE_MODE_RGMII_RXID: + case PHY_INTERFACE_MODE_RGMII_TXID: + val = GPR_ENET_QOS_INTF_SEL_RGMII | + GPR_ENET_QOS_RGMII_EN; + break; + default: + dev_err(priv->dev, "no valid interface mode found!\n"); + return; + } + + val |= GPR_ENET_QOS_CLK_GEN_EN; + + regmap_update_bits(priv->intf_regmap, priv->intf_reg_off, + GPR_ENET_QOS_INTF_MODE_MASK, val); +} + +static int eqos_init_imx8(struct device_d *dev, struct eqos *eqos) +{ + struct device_node *np = dev->device_node; + struct eqos_imx8_priv *priv = eqos->priv; + int ret; + + priv->dev = dev; + + if (of_get_property(np, "snps,rmii_refclk_ext", NULL)) + priv->rmii_refclk_ext = true; + + if (of_device_is_compatible(np, "nxp,imx8mp-dwmac-eqos")) { + priv->intf_regmap = syscon_regmap_lookup_by_phandle(np, "intf_mode"); + if (IS_ERR(priv->intf_regmap)) + return PTR_ERR(priv->intf_regmap); + + ret = of_property_read_u32_index(np, "intf_mode", 1, &priv->intf_reg_off); + if (ret) { + dev_err(dev, "Can't get intf mode reg offset (%d)\n", ret); + return ret; + } + } + + priv->num_clks = ARRAY_SIZE(imx8_clks); + priv->clks = xmalloc(priv->num_clks * sizeof(*priv->clks)); + memcpy(priv->clks, imx8_clks, sizeof imx8_clks); + + ret = clk_bulk_get(dev, priv->num_clks, priv->clks); + if (ret) { + dev_err(dev, "Failed to get clks: %s\n", strerror(-ret)); + return ret; + } + + ret = clk_bulk_enable(priv->num_clks, priv->clks); + if (ret) { + dev_err(dev, "Failed to enable clks: %s\n", strerror(-ret)); + return ret; + } + + eqos_imx8_set_interface_mode(eqos); + + return 0; +} + +static struct eqos_ops imx8_ops = { + .init = eqos_init_imx8, + .get_ethaddr = eqos_get_ethaddr, + .set_ethaddr = eqos_set_ethaddr, + .adjust_link = eqos_adjust_link_imx8, + .get_csr_clk_rate = eqos_get_csr_clk_rate_imx8, + + .clk_csr = EQOS_MDIO_ADDR_CR_250_300, + .config_mac = EQOS_MAC_RXQ_CTRL0_RXQ0EN_ENABLED_DCB, +}; + +static int eqos_probe_imx8(struct device_d *dev) +{ + return eqos_probe(dev, &imx8_ops, xzalloc(sizeof(struct eqos_imx8_priv))); +} + +static void eqos_remove_imx8(struct device_d *dev) +{ + struct eqos *eqos = dev->priv; + struct eqos_imx8_priv *priv = eqos->priv; + + eqos_remove(dev); + + clk_bulk_disable(priv->num_clks, priv->clks); + clk_bulk_put(priv->num_clks, priv->clks); +} + +static __maybe_unused struct of_device_id eqos_imx8_ids[] = { + { .compatible = "nxp,imx8mp-dwmac-eqos"}, + { /* sentinel */ } +}; + +static struct driver_d eqos_imx8_driver = { + .name = "eqos-imx8", + .probe = eqos_probe_imx8, + .remove = eqos_remove_imx8, + .of_compatible = DRV_OF_COMPAT(eqos_imx8_ids), +}; +device_platform_driver(eqos_imx8_driver); -- 2.39.0