diff options
| author | Oleksij Rempel <o.rempel@pengutronix.de> | 2021-08-11 08:37:12 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2021-08-12 10:51:45 +0100 |
| commit | e0ba60509d64a7e91d13d28c247db59bf39d9837 (patch) | |
| tree | ce71f901f2c07ebb15e68ea236a5f1734c0aa7df | |
| parent | 445af0d25992a92f2caf9c0e089cc7030d6b4eec (diff) | |
net: phy: nxp-tja11xx: log critical health state
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 <o.rempel@pengutronix.de>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | drivers/net/phy/nxp-tja11xx.c | 13 |
1 files 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; |