From patchwork Tue Aug 10 12:56:18 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Oleksij Rempel X-Patchwork-Id: 12428867 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 2B2F6C4338F for ; Tue, 10 Aug 2021 12:56:42 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 130FC60FC4 for ; Tue, 10 Aug 2021 12:56:42 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S240971AbhHJM5D (ORCPT ); Tue, 10 Aug 2021 08:57:03 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:42014 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S241003AbhHJM5D (ORCPT ); Tue, 10 Aug 2021 08:57:03 -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 103D8C0613D3 for ; Tue, 10 Aug 2021 05:56:40 -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 1mDRIs-0004SR-8w; Tue, 10 Aug 2021 14:56:22 +0200 Received: from ore by dude.hi.pengutronix.de with local (Exim 4.92) (envelope-from ) id 1mDRIp-0005Hh-Qu; Tue, 10 Aug 2021 14:56:19 +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 v1] net: phy: nxp-tja11xx: log critical health state Date: Tue, 10 Aug 2021 14:56:18 +0200 Message-Id: <20210810125618.20255-1-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. To make testing and troubleshooting more easier, other bits are exported over the ethtool phy stats interface: - level of overtemperature. There is no access to thermal sensor. - power supply line where undervoltage was detected Signed-off-by: Oleksij Rempel --- drivers/net/phy/nxp-tja11xx.c | 19 +++++++++++++++++-- 1 file changed, 17 insertions(+), 2 deletions(-) diff --git a/drivers/net/phy/nxp-tja11xx.c b/drivers/net/phy/nxp-tja11xx.c index afd7afa1f498..4c37b427a53b 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) @@ -89,6 +91,12 @@ static struct tja11xx_phy_stats tja11xx_hw_stats[] = { { "phy_polarity_detect", 25, 6, BIT(6) }, { "phy_open_detect", 25, 7, BIT(7) }, { "phy_short_detect", 25, 8, BIT(8) }, + { "phy_temp_warn (temp > 155C°)", 25, 9, BIT(9) }, + { "phy_temp_high (temp > 180C°)", 25, 10, BIT(10) }, + { "phy_uv_vddio", 25, 11, BIT(11) }, + { "phy_uv_vddd_1v8", 25, 13, BIT(13) }, + { "phy_uv_vdda_3v3", 25, 14, BIT(14) }, + { "phy_uv_vddd_3v3", 25, 15, BIT(15) }, { "phy_rem_rcvr_count", 26, 0, GENMASK(7, 0) }, { "phy_loc_rcvr_count", 26, 8, GENMASK(15, 8) }, }; @@ -607,7 +615,8 @@ 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 +631,7 @@ 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 +640,11 @@ static irqreturn_t tja11xx_handle_interrupt(struct phy_device *phydev) return IRQ_NONE; } + if (irq_status & MII_INTSRC_TEMP_ERR) + dev_err(dev, "Overtemperature error detected (temp > 155C°).\n"); + if (irq_status & MII_INTSRC_UV_ERR) + dev_err(dev, "Undervoltage error detected.\n"); + if (!(irq_status & MII_INTSRC_MASK)) return IRQ_NONE;