From mboxrd@z Thu Jan 1 00:00:00 1970 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 37FF9EE4996 for ; Mon, 21 Aug 2023 21:53:54 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230387AbjHUVxy (ORCPT ); Mon, 21 Aug 2023 17:53:54 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40416 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230266AbjHUVxy (ORCPT ); Mon, 21 Aug 2023 17:53:54 -0400 Received: from mail-pf1-x42d.google.com (mail-pf1-x42d.google.com [IPv6:2607:f8b0:4864:20::42d]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A1E6013D for ; Mon, 21 Aug 2023 14:53:52 -0700 (PDT) Received: by mail-pf1-x42d.google.com with SMTP id d2e1a72fcca58-68a410316a2so1031126b3a.0 for ; Mon, 21 Aug 2023 14:53:52 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=broadcom.com; s=google; t=1692654832; x=1693259632; h=mime-version:references:in-reply-to:message-id:date:subject:cc:to :from:from:to:cc:subject:date:message-id:reply-to; bh=WFcw8A8Ji+3hvjrwQDEX1jrqB1IOTmzd2JMOWPjY+PI=; b=D3MwPbGnieb2VNgHhJG/dUygHen6mfqY1OQSgLfZFC/9RJsjKGxyin84N/EnXPql99 McWYrPugx8pEhpvI0ziJ+OceTXyZgBoKNymfss3Vp9rq9LuyKXxtTACKlO/miRrPst4M VmszrjpZNVq/u5tJ4j/+Kk2Wc6zNDfokvpQGU= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1692654832; x=1693259632; h=mime-version:references:in-reply-to:message-id:date:subject:cc:to :from:x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=WFcw8A8Ji+3hvjrwQDEX1jrqB1IOTmzd2JMOWPjY+PI=; b=chqV1cuHHq2vEhVEQ/9lx1EOUvy83xSmbdV3WNQFS4W546bGaO0F6L5YVZ9kCy5tkj kaTuzfxYQ3ZZdXFt+lPWHHfQo11soYcVGObl3iqMF2JrkDmqHpxAcauv1Me5BWWb+Jct fy+o+XGlNlpOqIJdxjXbCLMlo36jIEGuNdbRIo72eu9YoogCmiD0T1Pgdrh4rOVPw3Pq YfmOuBiaP+FEtUqY/9pRXnIbmHZc4pQwzFnMFdJuiDjjt1HHlQWNJwjNvYO0LYYZ/rnm OfB0IMc46YiuiltLRSmCsadeAkt90Z0Opm0yhRekJV83WuiNht+8ud0mE8I/Wna2Bv8R DwpQ== X-Gm-Message-State: AOJu0YxT/2x/MY+wW97KE5tH4zoCQS6uoe7hR6SBt1UrrD3kcNtgAtlm msO/54wrU+l9E1i58ARfZD/8wtaH/EWEUhqOy9tFH9DTUuK5jZsRi3s+NT97HOr81gcnD8oUZ+U tfmLN0wHVmrWMK0SJqOzEAYPbhwF2TiUaxc3LWHF2UO6Kn2oTb2KLDWdmxdhynak0ZjNTYJHf+x Iddfe2ANeqXA== X-Google-Smtp-Source: AGHT+IFF9NQu4s+2wsWcjkY9usJ/s1YOa8+RxH/KvQiBxc/agIr/sKP5Kxc0TbplCHnaWFiECp54Lg== X-Received: by 2002:a05:6a00:234a:b0:689:eed5:609b with SMTP id j10-20020a056a00234a00b00689eed5609bmr6584215pfj.27.1692654831582; Mon, 21 Aug 2023 14:53:51 -0700 (PDT) Received: from fainelli-desktop.igp.broadcom.net ([192.19.223.252]) by smtp.gmail.com with ESMTPSA id d5-20020aa78685000000b00689f8dc26c2sm1698956pfo.133.2023.08.21.14.53.50 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 21 Aug 2023 14:53:51 -0700 (PDT) From: Florian Fainelli To: stable@vger.kernel.org Cc: Justin Chen , Florian Fainelli , Jakub Kicinski , Broadcom internal kernel review list , Andrew Lunn , Heiner Kallweit , Russell King , "David S. Miller" , Eric Dumazet , Paolo Abeni , netdev@vger.kernel.org (open list:BROADCOM ETHERNET PHY DRIVERS), linux-kernel@vger.kernel.org (open list), Greg Kroah-Hartman , Sasha Levin Subject: [PATCH stable 4.19] net: phy: broadcom: stub c45 read/write for 54810 Date: Mon, 21 Aug 2023 14:53:47 -0700 Message-Id: <20230821215348.3123487-1-florian.fainelli@broadcom.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <2023082133-mashing-flick-3a50@gregkh> References: <2023082133-mashing-flick-3a50@gregkh> MIME-Version: 1.0 Content-Type: multipart/signed; protocol="application/pkcs7-signature"; micalg=sha-256; boundary="000000000000fe3306060375e9ec" Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org --000000000000fe3306060375e9ec Content-Transfer-Encoding: 8bit From: Justin Chen commit 096516d092d54604d590827d05b1022c8f326639 upstream The 54810 does not support c45. The mmd_phy_indirect accesses return arbirtary values leading to odd behavior like saying it supports EEE when it doesn't. We also see that reading/writing these non-existent MMD registers leads to phy instability in some cases. Fixes: b14995ac2527 ("net: phy: broadcom: Add BCM54810 PHY entry") Signed-off-by: Justin Chen Reviewed-by: Florian Fainelli Link: https://lore.kernel.org/r/1691901708-28650-1-git-send-email-justin.chen@broadcom.com Signed-off-by: Jakub Kicinski [florian: resolved conflicts in 4.19] Signed-off-by: Florian Fainelli --- drivers/net/phy/broadcom.c | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/drivers/net/phy/broadcom.c b/drivers/net/phy/broadcom.c index 94622d119abc..49fb62d02a76 100644 --- a/drivers/net/phy/broadcom.c +++ b/drivers/net/phy/broadcom.c @@ -421,6 +421,17 @@ static int bcm5482_read_status(struct phy_device *phydev) return err; } +static int bcm54810_read_mmd(struct phy_device *phydev, int devnum, u16 regnum) +{ + return -EOPNOTSUPP; +} + +static int bcm54810_write_mmd(struct phy_device *phydev, int devnum, u16 regnum, + u16 val) +{ + return -EOPNOTSUPP; +} + static int bcm5481_config_aneg(struct phy_device *phydev) { struct device_node *np = phydev->mdio.dev.of_node; @@ -684,6 +695,8 @@ static struct phy_driver broadcom_drivers[] = { .name = "Broadcom BCM54810", .features = PHY_GBIT_FEATURES, .flags = PHY_HAS_INTERRUPT, + .read_mmd = bcm54810_read_mmd, + .write_mmd = bcm54810_write_mmd, .config_init = bcm54xx_config_init, .config_aneg = bcm5481_config_aneg, .ack_interrupt = bcm_phy_ack_intr, -- 2.34.1 --000000000000fe3306060375e9ec Content-Type: application/pkcs7-signature; name="smime.p7s" Content-Transfer-Encoding: base64 Content-Disposition: attachment; filename="smime.p7s" Content-Description: S/MIME Cryptographic Signature MIIQeQYJKoZIhvcNAQcCoIIQajCCEGYCAQExDzANBglghkgBZQMEAgEFADALBgkqhkiG9w0BBwGg gg3QMIIFDTCCA/WgAwIBAgIQeEqpED+lv77edQixNJMdADANBgkqhkiG9w0BAQsFADBMMSAwHgYD VQQLExdHbG9iYWxTaWduIFJvb3QgQ0EgLSBSMzETMBEGA1UEChMKR2xvYmFsU2lnbjETMBEGA1UE AxMKR2xvYmFsU2lnbjAeFw0yMDA5MTYwMDAwMDBaFw0yODA5MTYwMDAwMDBaMFsxCzAJBgNVBAYT AkJFMRkwFwYDVQQKExBHbG9iYWxTaWduIG52LXNhMTEwLwYDVQQDEyhHbG9iYWxTaWduIEdDQyBS 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