From patchwork Sun Jul 11 16:38:15 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Marek_Beh=C3=BAn?= X-Patchwork-Id: 472806 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-19.7 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, INCLUDES_CR_TRAILER, INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id BF269C07E96 for ; Sun, 11 Jul 2021 16:38:20 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 9C0E161178 for ; Sun, 11 Jul 2021 16:38:20 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232340AbhGKQlG (ORCPT ); Sun, 11 Jul 2021 12:41:06 -0400 Received: from mail.kernel.org ([198.145.29.99]:36558 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229817AbhGKQlG (ORCPT ); Sun, 11 Jul 2021 12:41:06 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id 6498860FDA; Sun, 11 Jul 2021 16:38:18 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1626021499; bh=zjLf4GGHNhZ0wqyExb9qXipL3uUSrHzmwwCgoLa+UCI=; h=From:To:Cc:Subject:Date:From; b=XC3ZyjmhsglqxbZ2LP+kTfFJOKL9SKeK123VQIerwB1Sb+9gJeZTapCjP+LsFxTTq lbbYGxVHKhxSc0czPVeITnw3ZXr+fZXf08ASs4FWOT2vLIyav/Js76Z12PUoiuyTcX VtGkwoI/hK5i3W71PQfe2Jiw9t39JglosWGXEtI+3iuFRTfM2aKkNayqCZrAP1K/ZM XWIwJDfpGv3Yp8YApK4aCCuzGPB3QBnnvRhYAx762jI5PhgC6P92DBjROK9CfUKIBl Vfn3F7OabqZWQu3ZzAST0XS5TZOd9r+cIfdsZqT3GeY2MOwlj1sMebIntX/E681w9f 7urRC0GKCI+zg== From: =?utf-8?q?Marek_Beh=C3=BAn?= To: netdev@vger.kernel.org, Russell King Cc: Andrew Lunn , "David S . Miller" , Jakub Kicinski , =?utf-8?q?Marek_Beh=C3=BAn?= , Matteo Croce Subject: [PATCH net] net: phy: marvell10g: fix differentiation of 88X3310 from 88X3340 Date: Sun, 11 Jul 2021 18:38:15 +0200 Message-Id: <20210711163815.19844-1-kabel@kernel.org> X-Mailer: git-send-email 2.31.1 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org It seems that we cannot differentiate 88X3310 from 88X3340 by simply looking at bit 3 of revision ID. This only works on revisions A0 and A1. On revision B0, this bit is always 1. Instead use the 3.d00d register for differentiation, since this register contains information about number of ports on the device. Fixes: 9885d016ffa9 ("net: phy: marvell10g: add separate structure for 88X3340") Signed-off-by: Marek Behún Reported-by: Matteo Croce --- drivers/net/phy/marvell10g.c | 40 +++++++++++++++++++++++++++++++----- include/linux/marvell_phy.h | 6 +----- 2 files changed, 36 insertions(+), 10 deletions(-) diff --git a/drivers/net/phy/marvell10g.c b/drivers/net/phy/marvell10g.c index bbbc6ac8fa82..53a433442803 100644 --- a/drivers/net/phy/marvell10g.c +++ b/drivers/net/phy/marvell10g.c @@ -78,6 +78,11 @@ enum { /* Temperature read register (88E2110 only) */ MV_PCS_TEMP = 0x8042, + /* Number of ports on the device */ + MV_PCS_PORT_INFO = 0xd00d, + MV_PCS_PORT_INFO_NPORTS_MASK = 0x0380, + MV_PCS_PORT_INFO_NPORTS_SHIFT = 7, + /* These registers appear at 0x800X and 0xa00X - the 0xa00X control * registers appear to set themselves to the 0x800X when AN is * restarted, but status registers appear readable from either. @@ -966,6 +971,30 @@ static const struct mv3310_chip mv2111_type = { #endif }; +static int mv3310_get_number_of_ports(struct phy_device *phydev) +{ + int ret; + + ret = phy_read_mmd(phydev, MDIO_MMD_PCS, MV_PCS_PORT_INFO); + if (ret < 0) + return ret; + + ret &= MV_PCS_PORT_INFO_NPORTS_MASK; + ret >>= MV_PCS_PORT_INFO_NPORTS_SHIFT; + + return ret + 1; +} + +static int mv3310_match_phy_device(struct phy_device *phydev) +{ + return mv3310_get_number_of_ports(phydev) == 1; +} + +static int mv3340_match_phy_device(struct phy_device *phydev) +{ + return mv3310_get_number_of_ports(phydev) == 4; +} + static int mv211x_match_phy_device(struct phy_device *phydev, bool has_5g) { int val; @@ -994,7 +1023,8 @@ static int mv2111_match_phy_device(struct phy_device *phydev) static struct phy_driver mv3310_drivers[] = { { .phy_id = MARVELL_PHY_ID_88X3310, - .phy_id_mask = MARVELL_PHY_ID_88X33X0_MASK, + .phy_id_mask = MARVELL_PHY_ID_MASK, + .match_phy_device = mv3310_match_phy_device, .name = "mv88x3310", .driver_data = &mv3310_type, .get_features = mv3310_get_features, @@ -1011,8 +1041,9 @@ static struct phy_driver mv3310_drivers[] = { .set_loopback = genphy_c45_loopback, }, { - .phy_id = MARVELL_PHY_ID_88X3340, - .phy_id_mask = MARVELL_PHY_ID_88X33X0_MASK, + .phy_id = MARVELL_PHY_ID_88X3310, + .phy_id_mask = MARVELL_PHY_ID_MASK, + .match_phy_device = mv3340_match_phy_device, .name = "mv88x3340", .driver_data = &mv3340_type, .get_features = mv3310_get_features, @@ -1069,8 +1100,7 @@ static struct phy_driver mv3310_drivers[] = { module_phy_driver(mv3310_drivers); static struct mdio_device_id __maybe_unused mv3310_tbl[] = { - { MARVELL_PHY_ID_88X3310, MARVELL_PHY_ID_88X33X0_MASK }, - { MARVELL_PHY_ID_88X3340, MARVELL_PHY_ID_88X33X0_MASK }, + { MARVELL_PHY_ID_88X3310, MARVELL_PHY_ID_MASK }, { MARVELL_PHY_ID_88E2110, MARVELL_PHY_ID_MASK }, { }, }; diff --git a/include/linux/marvell_phy.h b/include/linux/marvell_phy.h index acee44b9db26..0f06c2287b52 100644 --- a/include/linux/marvell_phy.h +++ b/include/linux/marvell_phy.h @@ -22,14 +22,10 @@ #define MARVELL_PHY_ID_88E1545 0x01410ea0 #define MARVELL_PHY_ID_88E1548P 0x01410ec0 #define MARVELL_PHY_ID_88E3016 0x01410e60 +#define MARVELL_PHY_ID_88X3310 0x002b09a0 #define MARVELL_PHY_ID_88E2110 0x002b09b0 #define MARVELL_PHY_ID_88X2222 0x01410f10 -/* PHY IDs and mask for Alaska 10G PHYs */ -#define MARVELL_PHY_ID_88X33X0_MASK 0xfffffff8 -#define MARVELL_PHY_ID_88X3310 0x002b09a0 -#define MARVELL_PHY_ID_88X3340 0x002b09a8 - /* Marvel 88E1111 in Finisar SFP module with modified PHY ID */ #define MARVELL_PHY_ID_88E1111_FINISAR 0x01ff0cc0