From nobody Fri Dec 19 17:26:52 2025 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 7EBE2CE7B1C for ; Thu, 28 Sep 2023 19:01:10 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231689AbjI1TBJ (ORCPT ); Thu, 28 Sep 2023 15:01:09 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:48904 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231684AbjI1TBG (ORCPT ); Thu, 28 Sep 2023 15:01:06 -0400 X-Greylist: delayed 60 seconds by postgrey-1.37 at lindbergh.monkeyblade.net; Thu, 28 Sep 2023 12:01:01 PDT Received: from smtpcmd04131.aruba.it (smtpcmd04131.aruba.it [62.149.158.131]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 54E291B2 for ; Thu, 28 Sep 2023 12:01:01 -0700 (PDT) Received: from localhost.localdomain ([146.241.127.78]) by Aruba Outgoing Smtp with ESMTPSA id lwEvqjxBnB8oFlwEwqJ8i9; Thu, 28 Sep 2023 20:59:59 +0200 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=aruba.it; s=a1; t=1695927599; bh=4xdOQg7MDYwZ2y9dKQ+Rh978lhEO6IHpjzsezpTDiS0=; h=From:To:Subject:Date:MIME-Version; b=NWAsZt/EAfhYGHfJRZT7J3qqLCAjU5gF5AG932SxcSpSvER5Rlls8jP2gqe0eMZHY 75cY224qfiEr0MxqJEir8Qfz4qpyzIgCpl3vor2omxwspmmALqSW6kUztQr3nrIBWk 8cKx8D4VthLudqzTy7DIkEB5sVUaNQ4m7WIXW4z9n/xwpl2d8gWwPCpi/og6ZqRI8O xpphZM6HohBB9f84AaLQAmltGgf8kHFP5jPPqIx8K9F0+yj8N+nd8cWoTHL93E/cT3 esin5MepzuVtCMO720nHWVke/gcJnbysdXJVUiRJT38JLiGNDljEgkNy8yoqbvXQ+j GmYv3vw6VWwuA== From: Giulio Benetti To: linux-kernel@vger.kernel.org Cc: Florian Fainelli , Broadcom internal kernel review list , Andrew Lunn , Heiner Kallweit , Russell King , "David S . Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , netdev@vger.kernel.org, Giulio Benetti , Jim Reinhart , James Autry , Matthew Maron , Giulio Benetti Subject: [PATCH v3] net: phy: broadcom: add support for BCM5221 phy Date: Thu, 28 Sep 2023 20:59:49 +0200 Message-Id: <20230928185949.1731477-1-giulio.benetti@benettiengineering.com> X-Mailer: git-send-email 2.34.1 MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-CMAE-Envelope: MS4xfGNhlyIlAF1rlmtib+3YdkgEiW/g3l4lzFyRuIFPI6ujXrPScA9Lq+127dtMhuyk6Bva2ZayooKWCn7Mwr7GqmQBhXrVpFCvW0NPA8TpGkq4JXTbxnvR a3mv3kqWPyerrq4Br9e/lmieHvZt2MwVfGINXUebtJ70Lqvc2t4+9SETz5UrJXHHN7tNdD7BlsgNpGwBd4FDuzbchwV51YPNuyzRe5MQAUFdw47TYiMnF0rd nCZkXGtGSytVQnP6ZCFAL/5cNFVCgNDv8fly2/tJ+pwOhkVocyVquMpxFE3rfuuzwKEoeq2n30F9IXQF/tgFnN9ZrUUvsvV8o/Wy6Ncle0TiAlL95oNWbdo2 i3hRE9S4vSEHWcTpJPPdLHFjoT1Q/XtUrQzHVzrBhKodFDMkX2WlP+PT/NdymACcJBv36l7cLt5lecSE+fu83wx1OGYTcUPOuR54GJvOHQWgWvOCsg3eOR0w bFtWrGR6GK9qwGY2kXpZpcgT5kwpGUBpGgfTWsOt0hE2N5iPZj6pm38vednRFkdMfNwGCJbUm6L/4nc2M2UFsqpId+y8z3YRlHmV40Fr6d6pmIFnMQvGOKHZ EpDIwoZEId3E7icBLnZYVFc1hM6GSPmamJzPRr/4KCYYtqw7P4kMkRxtcYs5wYelstvmTqigQhs+Pv8oG0zzWIbtSRxv7tFuJU0JXvICnTiUJH6Zkf2L9sX2 faAwKcjC45Z2YL4qbQ1uUlfDm4RVb9f3MaslHzrYxJTz7aFyedKkdg== Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" From: Giulio Benetti This patch adds the BCM5221 PHY support by reusing brcm_fet_*() callbacks and adding quirks for BCM5221 when needed. Cc: Jim Reinhart Cc: James Autry Cc: Matthew Maron Signed-off-by: Giulio Benetti Signed-off-by: Giulio Benetti --- V1->V2: Suggested by Andrew Lunn: * handle mdix_ctrl adding bcm5221_config_aneg() and bcm5221_read_status() * reorder PHY_ID_BCM5241 in broadcom_tbl[] Suggested by Russell King: * add comment on phy_read(..., MII_BRCM_FET_INTREG) * lock mdio bus when in shadow mode Suggested by Florian Fainelli: * reuse brcm_fet_*() callbacks checking for phy_id =3D=3D PHY_ID_BCM5221 V2->V3: * rebase on master branch --- drivers/net/phy/broadcom.c | 155 +++++++++++++++++++++++++++++-------- include/linux/brcmphy.h | 10 +++ 2 files changed, 132 insertions(+), 33 deletions(-) diff --git a/drivers/net/phy/broadcom.c b/drivers/net/phy/broadcom.c index 04b2e6eeb195..328236cab897 100644 --- a/drivers/net/phy/broadcom.c +++ b/drivers/net/phy/broadcom.c @@ -704,16 +704,21 @@ static int brcm_fet_config_init(struct phy_device *ph= ydev) if (err < 0 && err !=3D -EIO) return err; =20 + /* Read to clear status bits */ reg =3D phy_read(phydev, MII_BRCM_FET_INTREG); if (reg < 0) return reg; =20 /* Unmask events we are interested in and mask interrupts globally. */ - reg =3D MII_BRCM_FET_IR_DUPLEX_EN | - MII_BRCM_FET_IR_SPEED_EN | - MII_BRCM_FET_IR_LINK_EN | - MII_BRCM_FET_IR_ENABLE | - MII_BRCM_FET_IR_MASK; + if (phydev->phy_id =3D=3D PHY_ID_BCM5221) + reg =3D MII_BRCM_FET_IR_ENABLE | + MII_BRCM_FET_IR_MASK; + else + reg =3D MII_BRCM_FET_IR_DUPLEX_EN | + MII_BRCM_FET_IR_SPEED_EN | + MII_BRCM_FET_IR_LINK_EN | + MII_BRCM_FET_IR_ENABLE | + MII_BRCM_FET_IR_MASK; =20 err =3D phy_write(phydev, MII_BRCM_FET_INTREG, reg); if (err < 0) @@ -726,42 +731,50 @@ static int brcm_fet_config_init(struct phy_device *ph= ydev) =20 reg =3D brcmtest | MII_BRCM_FET_BT_SRE; =20 - err =3D phy_write(phydev, MII_BRCM_FET_BRCMTEST, reg); - if (err < 0) - return err; + phy_lock_mdio_bus(phydev); =20 - /* Set the LED mode */ - reg =3D phy_read(phydev, MII_BRCM_FET_SHDW_AUXMODE4); - if (reg < 0) { - err =3D reg; - goto done; + err =3D __phy_write(phydev, MII_BRCM_FET_BRCMTEST, reg); + if (err < 0) { + phy_unlock_mdio_bus(phydev); + return err; } =20 - reg &=3D ~MII_BRCM_FET_SHDW_AM4_LED_MASK; - reg |=3D MII_BRCM_FET_SHDW_AM4_LED_MODE1; + if (phydev->phy_id !=3D PHY_ID_BCM5221) { + /* Set the LED mode */ + reg =3D __phy_read(phydev, MII_BRCM_FET_SHDW_AUXMODE4); + if (reg < 0) { + err =3D reg; + goto done; + } =20 - err =3D phy_write(phydev, MII_BRCM_FET_SHDW_AUXMODE4, reg); - if (err < 0) - goto done; + reg &=3D ~MII_BRCM_FET_SHDW_AM4_LED_MASK; + reg |=3D MII_BRCM_FET_SHDW_AM4_LED_MODE1; =20 - /* Enable auto MDIX */ - err =3D phy_set_bits(phydev, MII_BRCM_FET_SHDW_MISCCTRL, - MII_BRCM_FET_SHDW_MC_FAME); - if (err < 0) - goto done; + err =3D __phy_write(phydev, MII_BRCM_FET_SHDW_AUXMODE4, reg); + if (err < 0) + goto done; + + /* Enable auto MDIX */ + err =3D __phy_set_bits(phydev, MII_BRCM_FET_SHDW_MISCCTRL, + MII_BRCM_FET_SHDW_MC_FAME); + if (err < 0) + goto done; + } =20 if (phydev->dev_flags & PHY_BRCM_AUTO_PWRDWN_ENABLE) { /* Enable auto power down */ - err =3D phy_set_bits(phydev, MII_BRCM_FET_SHDW_AUXSTAT2, - MII_BRCM_FET_SHDW_AS2_APDE); + err =3D __phy_set_bits(phydev, MII_BRCM_FET_SHDW_AUXSTAT2, + MII_BRCM_FET_SHDW_AS2_APDE); } =20 done: /* Disable shadow register access */ - err2 =3D phy_write(phydev, MII_BRCM_FET_BRCMTEST, brcmtest); + err2 =3D __phy_write(phydev, MII_BRCM_FET_BRCMTEST, brcmtest); if (!err) err =3D err2; =20 + phy_unlock_mdio_bus(phydev); + return err; } =20 @@ -840,23 +853,86 @@ static int brcm_fet_suspend(struct phy_device *phydev) =20 reg =3D brcmtest | MII_BRCM_FET_BT_SRE; =20 - err =3D phy_write(phydev, MII_BRCM_FET_BRCMTEST, reg); - if (err < 0) + phy_lock_mdio_bus(phydev); + + err =3D __phy_write(phydev, MII_BRCM_FET_BRCMTEST, reg); + if (err < 0) { + phy_unlock_mdio_bus(phydev); return err; + } + + if (phydev->phy_id =3D=3D PHY_ID_BCM5221) + /* Force Low Power Mode with clock enabled */ + reg =3D BCM5221_SHDW_AM4_EN_CLK_LPM | BCM5221_SHDW_AM4_FORCE_LPM; + else + /* Set standby mode */ + reg =3D MII_BRCM_FET_SHDW_AM4_STANDBY; =20 - /* Set standby mode */ - err =3D phy_modify(phydev, MII_BRCM_FET_SHDW_AUXMODE4, - MII_BRCM_FET_SHDW_AM4_STANDBY, - MII_BRCM_FET_SHDW_AM4_STANDBY); + err =3D __phy_set_bits(phydev, MII_BRCM_FET_SHDW_AUXMODE4, reg); =20 /* Disable shadow register access */ - err2 =3D phy_write(phydev, MII_BRCM_FET_BRCMTEST, brcmtest); + err2 =3D __phy_write(phydev, MII_BRCM_FET_BRCMTEST, brcmtest); if (!err) err =3D err2; =20 + phy_unlock_mdio_bus(phydev); + return err; } =20 +static int bcm5221_config_aneg(struct phy_device *phydev) +{ + int ret, val; + + ret =3D genphy_config_aneg(phydev); + if (ret) + return ret; + + switch (phydev->mdix_ctrl) { + case ETH_TP_MDI: + val =3D BCM5221_AEGSR_MDIX_DIS; + break; + case ETH_TP_MDI_X: + val =3D BCM5221_AEGSR_MDIX_DIS | BCM5221_AEGSR_MDIX_MAN_SWAP; + break; + case ETH_TP_MDI_AUTO: + val =3D 0; + break; + default: + return 0; + } + + return phy_modify(phydev, BCM5221_AEGSR, BCM5221_AEGSR_MDIX_MAN_SWAP | + BCM5221_AEGSR_MDIX_DIS, + val); +} + +static int bcm5221_read_status(struct phy_device *phydev) +{ + int ret; + + /* Read MDIX status */ + ret =3D phy_read(phydev, BCM5221_AEGSR); + if (ret < 0) + return ret; + + if (ret & BCM5221_AEGSR_MDIX_DIS) { + if (ret & BCM5221_AEGSR_MDIX_MAN_SWAP) + phydev->mdix_ctrl =3D ETH_TP_MDI_X; + else + phydev->mdix_ctrl =3D ETH_TP_MDI; + } else { + phydev->mdix_ctrl =3D ETH_TP_MDI_AUTO; + } + + if (ret & BCM5221_AEGSR_MDIX_STATUS) + phydev->mdix =3D ETH_TP_MDI_X; + else + phydev->mdix =3D ETH_TP_MDI; + + return genphy_read_status(phydev); +} + static void bcm54xx_phy_get_wol(struct phy_device *phydev, struct ethtool_wolinfo *wol) { @@ -1221,6 +1297,18 @@ static struct phy_driver broadcom_drivers[] =3D { .handle_interrupt =3D brcm_fet_handle_interrupt, .suspend =3D brcm_fet_suspend, .resume =3D brcm_fet_config_init, +}, { + .phy_id =3D PHY_ID_BCM5221, + .phy_id_mask =3D 0xfffffff0, + .name =3D "Broadcom BCM5221", + /* PHY_BASIC_FEATURES */ + .config_init =3D brcm_fet_config_init, + .config_intr =3D brcm_fet_config_intr, + .handle_interrupt =3D brcm_fet_handle_interrupt, + .suspend =3D brcm_fet_suspend, + .resume =3D brcm_fet_config_init, + .config_aneg =3D bcm5221_config_aneg, + .read_status =3D bcm5221_read_status, }, { .phy_id =3D PHY_ID_BCM5395, .phy_id_mask =3D 0xfffffff0, @@ -1296,6 +1384,7 @@ static struct mdio_device_id __maybe_unused broadcom_= tbl[] =3D { { PHY_ID_BCM50610M, 0xfffffff0 }, { PHY_ID_BCM57780, 0xfffffff0 }, { PHY_ID_BCMAC131, 0xfffffff0 }, + { PHY_ID_BCM5221, 0xfffffff0 }, { PHY_ID_BCM5241, 0xfffffff0 }, { PHY_ID_BCM5395, 0xfffffff0 }, { PHY_ID_BCM53125, 0xfffffff0 }, diff --git a/include/linux/brcmphy.h b/include/linux/brcmphy.h index c55810a43541..1394ba302367 100644 --- a/include/linux/brcmphy.h +++ b/include/linux/brcmphy.h @@ -11,6 +11,7 @@ =20 #define PHY_ID_BCM50610 0x0143bd60 #define PHY_ID_BCM50610M 0x0143bd70 +#define PHY_ID_BCM5221 0x004061e0 #define PHY_ID_BCM5241 0x0143bc30 #define PHY_ID_BCMAC131 0x0143bc70 #define PHY_ID_BCM5481 0x0143bca0 @@ -331,6 +332,15 @@ =20 #define BCM54XX_WOL_INT_STATUS (MII_BCM54XX_EXP_SEL_WOL + 0x94) =20 +/* BCM5221 Registers */ +#define BCM5221_AEGSR 0x1C +#define BCM5221_AEGSR_MDIX_STATUS BIT(13) +#define BCM5221_AEGSR_MDIX_MAN_SWAP BIT(12) +#define BCM5221_AEGSR_MDIX_DIS BIT(11) + +#define BCM5221_SHDW_AM4_EN_CLK_LPM BIT(2) +#define BCM5221_SHDW_AM4_FORCE_LPM BIT(1) + /*************************************************************************= ****/ /* Fast Ethernet Transceiver definitions. */ /*************************************************************************= ****/ --=20 2.34.1