From patchwork Wed Aug 11 06:37:12 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Oleksij Rempel X-Patchwork-Id: 12430103 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=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable 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 DB655C4338F for ; Wed, 11 Aug 2021 06:37:31 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id BCD1760FD9 for ; Wed, 11 Aug 2021 06:37:31 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234929AbhHKGhy (ORCPT ); Wed, 11 Aug 2021 02:37:54 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58972 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234886AbhHKGhw (ORCPT ); Wed, 11 Aug 2021 02:37:52 -0400 Received: from metis.ext.pengutronix.de (metis.ext.pengutronix.de [IPv6:2001:67c:670:201:290:27ff:fe1d:cc33]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 67C13C0613D5 for ; Tue, 10 Aug 2021 23:37:29 -0700 (PDT) Received: from dude.hi.pengutronix.de ([2001:67c:670:100:1d::7]) by metis.ext.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1mDhrY-0007l8-5V; Wed, 11 Aug 2021 08:37:16 +0200 Received: from ore by dude.hi.pengutronix.de with local (Exim 4.92) (envelope-from ) id 1mDhrV-00058b-EE; Wed, 11 Aug 2021 08:37:13 +0200 From: Oleksij Rempel To: Andrew Lunn , Heiner Kallweit , "David S. Miller" , Jakub Kicinski , Jean Delvare , Guenter Roeck Cc: Oleksij Rempel , Pengutronix Kernel Team , linux-kernel@vger.kernel.org, netdev@vger.kernel.org, Marek Vasut , David Jander , linux-hwmon@vger.kernel.org Subject: [PATCH net-next v2 1/1] net: phy: nxp-tja11xx: log critical health state Date: Wed, 11 Aug 2021 08:37:12 +0200 Message-Id: <20210811063712.19695-1-o.rempel@pengutronix.de> X-Mailer: git-send-email 2.30.2 MIME-Version: 1.0 X-SA-Exim-Connect-IP: 2001:67c:670:100:1d::7 X-SA-Exim-Mail-From: ore@pengutronix.de X-SA-Exim-Scanned: No (on metis.ext.pengutronix.de); SAEximRunCond expanded to false X-PTX-Original-Recipient: linux-hwmon@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-hwmon@vger.kernel.org TJA1102 provides interrupt notification for the critical health states like overtemperature and undervoltage. The overtemperature bit is set if package temperature is beyond 155C°. This functionality was tested by heating the package up to 200C° The undervoltage bit is set if supply voltage drops beyond some critical threshold. Currently not tested. In a typical use case, both of this events should be logged and stored (or send to some remote system) for further investigations. Signed-off-by: Oleksij Rempel Reviewed-by: Andrew Lunn --- drivers/net/phy/nxp-tja11xx.c | 13 +++++++++++-- 1 file changed, 11 insertions(+), 2 deletions(-) diff --git a/drivers/net/phy/nxp-tja11xx.c b/drivers/net/phy/nxp-tja11xx.c index afd7afa1f498..9944cc501806 100644 --- a/drivers/net/phy/nxp-tja11xx.c +++ b/drivers/net/phy/nxp-tja11xx.c @@ -47,12 +47,14 @@ #define MII_INTSRC_LINK_FAIL BIT(10) #define MII_INTSRC_LINK_UP BIT(9) #define MII_INTSRC_MASK (MII_INTSRC_LINK_FAIL | MII_INTSRC_LINK_UP) -#define MII_INTSRC_TEMP_ERR BIT(1) #define MII_INTSRC_UV_ERR BIT(3) +#define MII_INTSRC_TEMP_ERR BIT(1) #define MII_INTEN 22 #define MII_INTEN_LINK_FAIL BIT(10) #define MII_INTEN_LINK_UP BIT(9) +#define MII_INTEN_UV_ERR BIT(3) +#define MII_INTEN_TEMP_ERR BIT(1) #define MII_COMMSTAT 23 #define MII_COMMSTAT_LINK_UP BIT(15) @@ -607,7 +609,8 @@ static int tja11xx_config_intr(struct phy_device *phydev) if (err) return err; - value = MII_INTEN_LINK_FAIL | MII_INTEN_LINK_UP; + value = MII_INTEN_LINK_FAIL | MII_INTEN_LINK_UP | + MII_INTEN_UV_ERR | MII_INTEN_TEMP_ERR; err = phy_write(phydev, MII_INTEN, value); } else { err = phy_write(phydev, MII_INTEN, value); @@ -622,6 +625,7 @@ static int tja11xx_config_intr(struct phy_device *phydev) static irqreturn_t tja11xx_handle_interrupt(struct phy_device *phydev) { + struct device *dev = &phydev->mdio.dev; int irq_status; irq_status = phy_read(phydev, MII_INTSRC); @@ -630,6 +634,11 @@ static irqreturn_t tja11xx_handle_interrupt(struct phy_device *phydev) return IRQ_NONE; } + if (irq_status & MII_INTSRC_TEMP_ERR) + dev_warn(dev, "Overtemperature error detected (temp > 155C°).\n"); + if (irq_status & MII_INTSRC_UV_ERR) + dev_warn(dev, "Undervoltage error detected.\n"); + if (!(irq_status & MII_INTSRC_MASK)) return IRQ_NONE;