From mboxrd@z Thu Jan 1 00:00:00 1970 Delivery-date: Wed, 06 Dec 2023 12:13:03 +0100 Received: from metis.whiteo.stw.pengutronix.de ([2a0a:edc0:2:b01:1d::104]) by lore.white.stw.pengutronix.de with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.96) (envelope-from ) id 1rApps-005cI1-1i for lore@lore.pengutronix.de; Wed, 06 Dec 2023 12:13:03 +0100 Received: from bombadil.infradead.org ([2607:7c80:54:3::133]) by metis.whiteo.stw.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1rApps-0008Nb-EU for lore@pengutronix.de; Wed, 06 Dec 2023 12:13:01 +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:Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-Type: Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender: Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References:List-Owner; bh=46+HXH9+v6aLtV8B+XXSSawDFi/NmcL8PKZvVdOCgTQ=; b=XBylCSiPThuEUtJUfTqhGBIltE fK8LTUqk+wc2iEQwxinILDBX7kjo9B0gUKdGeBde3I6/ab3Ck7Dpw8pP9dTJD2xAaWWzue5ck+WaD oBXRupknV10mP5+YZIU2ugZC4a31u01znc5oiK0enc176X6Z9pNDYMWcPRk30ZAhkF5jYRav1f4Un s+br+ZwOGk8aU69M/gFstHMSQFrsPX3HaSAT7/tZifmmcKMXJK+B4TmoReRm4vjTuaEPynejbOByI FVQV0MBtgI3e9cKpkGJAm+Fp1dXuki/TQ8UTY78bZGLYRsmSTBDG9xFkNifSAqYLZjrQkmnxNaa06 v19CP2XQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1rApoP-009t7j-2A; Wed, 06 Dec 2023 11:11:29 +0000 Received: from metis.whiteo.stw.pengutronix.de ([2a0a:edc0:2:b01:1d::104]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1rApoN-009t6V-0C for barebox@lists.infradead.org; Wed, 06 Dec 2023 11:11:28 +0000 Received: from drehscheibe.grey.stw.pengutronix.de ([2a0a:edc0:0:c01:1d::a2]) by metis.whiteo.stw.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1rApoH-00085s-Cl; Wed, 06 Dec 2023 12:11:21 +0100 Received: from [2a0a:edc0:0:1101:1d::ac] (helo=dude04.red.stw.pengutronix.de) by drehscheibe.grey.stw.pengutronix.de with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94.2) (envelope-from ) id 1rApoG-00DwkW-ND; Wed, 06 Dec 2023 12:11:20 +0100 Received: from ore by dude04.red.stw.pengutronix.de with local (Exim 4.96) (envelope-from ) id 1rApoG-005cE0-2A; Wed, 06 Dec 2023 12:11:20 +0100 From: Oleksij Rempel To: barebox@lists.infradead.org Cc: Oleksij Rempel , Oleksij Rempel Date: Wed, 6 Dec 2023 12:11:18 +0100 Message-Id: <20231206111118.1338567-1-o.rempel@pengutronix.de> X-Mailer: git-send-email 2.39.2 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20231206_031127_100607_5DD5F87B X-CRM114-Status: GOOD ( 17.34 ) 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.whiteo.stw.pengutronix.de X-Spam-Level: X-Spam-Status: No, score=-4.7 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, T_SCC_BODY_TEXT_LINE autolearn=unavailable autolearn_force=no version=3.4.2 Subject: [PATCH v1] net: phy: add TI DP83TG720 1000BaseT1 PHY support X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on metis.whiteo.stw.pengutronix.de) From: Oleksij Rempel Add driver for TI DP83TG720 driver support. Even if the PHY is capable of creating a link on it's own. It needs proper RGMII configuration and HW reset on link loss. Signed-off-by: Oleksij Rempel --- drivers/net/phy/Kconfig | 6 +++ drivers/net/phy/Makefile | 1 + drivers/net/phy/dp83tg720.c | 102 ++++++++++++++++++++++++++++++++++++ 3 files changed, 109 insertions(+) create mode 100644 drivers/net/phy/dp83tg720.c diff --git a/drivers/net/phy/Kconfig b/drivers/net/phy/Kconfig index e95e2a3228..8e12671801 100644 --- a/drivers/net/phy/Kconfig +++ b/drivers/net/phy/Kconfig @@ -35,6 +35,12 @@ config DP83TD510_PHY Support for the DP83TD510 Ethernet 10Base-T1L PHY. This PHY supports a 10M single pair Ethernet connection for up to 1000 meter cable. +config DP83TG720_PHY + tristate "Texas Instruments DP83TG720 Ethernet 1000Base-T1 PHY" + help + Support for the DP83TG720 Ethernet 10000Base-T1 PHY. This PHY supports + a 1000M single pair Ethernet. + config LXT_PHY bool "Driver for the Intel LXT PHYs" help diff --git a/drivers/net/phy/Makefile b/drivers/net/phy/Makefile index 26e4ad884d..ce15e1bab7 100644 --- a/drivers/net/phy/Makefile +++ b/drivers/net/phy/Makefile @@ -19,4 +19,5 @@ obj-$(CONFIG_MDIO_BUS_MUX) += mdio-mux.o obj-$(CONFIG_MDIO_BUS_MUX_GPIO) += mdio-mux-gpio.o obj-$(CONFIG_DP83867_PHY) += dp83867.o obj-$(CONFIG_DP83TD510_PHY) += dp83td510.o +obj-$(CONFIG_DP83TG720_PHY) += dp83tg720.o diff --git a/drivers/net/phy/dp83tg720.c b/drivers/net/phy/dp83tg720.c new file mode 100644 index 0000000000..f0c6e29489 --- /dev/null +++ b/drivers/net/phy/dp83tg720.c @@ -0,0 +1,102 @@ +// SPDX-License-Identifier: GPL-2.0 +/* Driver for the Texas Instruments DP83TG720 PHY + * Copyright (c) 2023 Pengutronix, Oleksij Rempel + */ +#include +#include +#include + +#define DP83TG720S_PHY_ID 0x2000a284 + +/* MDIO_MMD_VEND2 registers */ +#define DP83TG720S_MII_REG_10 0x10 +#define DP83TG720S_LINK_STATUS BIT(0) + +#define DP83TG720S_RGMII_DELAY_CTRL 0x602 +/* In RGMII mode, Enable or disable the internal delay for RXD */ +#define DP83TG720S_RGMII_RX_CLK_SEL BIT(1) +/* In RGMII mode, Enable or disable the internal delay for TXD */ +#define DP83TG720S_RGMII_TX_CLK_SEL BIT(0) + +#define DP83TG720S_PHY_RESET 0x1f +#define DP83TG720S_HW_RESET BIT(15) + +static int dp83tg720_config_rgmii_delay(struct phy_device *phydev) +{ + u16 rgmii_delay_mask; + u16 rgmii_delay = 0; + + switch (phydev->interface) { + case PHY_INTERFACE_MODE_RGMII: + rgmii_delay = 0; + break; + case PHY_INTERFACE_MODE_RGMII_ID: + rgmii_delay = DP83TG720S_RGMII_RX_CLK_SEL | + DP83TG720S_RGMII_TX_CLK_SEL; + break; + case PHY_INTERFACE_MODE_RGMII_RXID: + rgmii_delay = DP83TG720S_RGMII_RX_CLK_SEL; + break; + case PHY_INTERFACE_MODE_RGMII_TXID: + rgmii_delay = DP83TG720S_RGMII_TX_CLK_SEL; + break; + default: + return 0; + } + + rgmii_delay_mask = DP83TG720S_RGMII_RX_CLK_SEL | + DP83TG720S_RGMII_TX_CLK_SEL; + + return phy_modify_mmd(phydev, MDIO_MMD_VEND2, + DP83TG720S_RGMII_DELAY_CTRL, rgmii_delay_mask, + rgmii_delay); +} + +static int dp83tg720_phy_init(struct phy_device *phydev) +{ + /* HW reset is needed to recover link if previous link was lost. SW + * reset is not enough. + */ + phy_write(phydev, DP83TG720S_PHY_RESET, DP83TG720S_HW_RESET); + + phydev->supported = SUPPORTED_1000baseT_Full; + phydev->advertising = SUPPORTED_1000baseT_Full; + + if (phy_interface_is_rgmii(phydev)) + return dp83tg720_config_rgmii_delay(phydev); + + return 0; +} + +static int dp83tg720_read_status(struct phy_device *phydev) +{ + u16 phy_sts; + + phy_sts = phy_read(phydev, DP83TG720S_MII_REG_10); + phydev->link = !!(phy_sts & DP83TG720S_LINK_STATUS); + if (!phydev->link) { + phydev->speed = SPEED_UNKNOWN; + phydev->duplex = DUPLEX_UNKNOWN; + + /* According to the "DP83TC81x, DP83TG72x Software + * Implementation Guide", the PHY needs to be reset after a + * link loss or if no link is created after at least 100ms. + */ + dp83tg720_phy_init(phydev); + return 0; + } + + phydev->duplex = DUPLEX_FULL; + phydev->speed = SPEED_1000; + + return 0; +} + +static struct phy_driver dp83tg720_driver[] = { +{ + PHY_ID_MATCH_MODEL(DP83TG720S_PHY_ID), + .drv.name = "TI DP83TG720S", + .read_status = dp83tg720_read_status, + .config_init = dp83tg720_phy_init, +} }; +device_phy_drivers(dp83tg720_driver); -- 2.39.2