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From: Guenter Roeck <guenter.roeck@ericsson.com>
To: lm-sensors@lm-sensors.org
Cc: linux-kernel@vger.kernel.org
Subject: [lm-sensors] Adding critical/fault limits to hwmon sysfs API
Date: Sun, 20 Jun 2010 16:37:59 +0000	[thread overview]
Message-ID: <20100620163759.GA7077@ericsson.com> (raw)

Hi,

the current hwmon sysfs API does not specify critical or fault limits for voltage
and current readings.

Many recent power controller/monitoring chips have support for such limits in addition
to alarm limits. Typical action, when a the critical or fault limit is reached,
may be a board reset or power shutdown, or to report the fault condition.

Examples for chips supporting critical/fault limits are SMM665 and variants as well
as many PMBus devices, such as MAX8688, MAX16064, LTC2978, and others.

I think it would make sense to add critical/fault limits to the hwmon sysfs API,
to be able to report those limits if supported by a chip.

Any thoughts on this ?

Thanks,
Guenter


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WARNING: multiple messages have this Message-ID (diff)
From: Guenter Roeck <guenter.roeck@ericsson.com>
To: lm-sensors@lm-sensors.org
Cc: linux-kernel@vger.kernel.org
Subject: Adding critical/fault limits to hwmon sysfs API
Date: Sun, 20 Jun 2010 09:37:59 -0700	[thread overview]
Message-ID: <20100620163759.GA7077@ericsson.com> (raw)

Hi,

the current hwmon sysfs API does not specify critical or fault limits for voltage
and current readings.

Many recent power controller/monitoring chips have support for such limits in addition
to alarm limits. Typical action, when a the critical or fault limit is reached,
may be a board reset or power shutdown, or to report the fault condition.

Examples for chips supporting critical/fault limits are SMM665 and variants as well
as many PMBus devices, such as MAX8688, MAX16064, LTC2978, and others.

I think it would make sense to add critical/fault limits to the hwmon sysfs API,
to be able to report those limits if supported by a chip.

Any thoughts on this ?

Thanks,
Guenter


             reply	other threads:[~2010-06-20 16:37 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-06-20 16:37 Guenter Roeck [this message]
2010-06-20 16:37 ` Adding critical/fault limits to hwmon sysfs API Guenter Roeck
2010-06-23 12:43 ` [lm-sensors] " Jean Delvare
2010-06-23 12:43   ` Jean Delvare
2010-06-23 13:31   ` Guenter Roeck
2010-06-23 13:31     ` Guenter Roeck
2010-06-23 14:29     ` Jean Delvare
2010-06-23 14:29       ` Jean Delvare
2010-06-23 15:03       ` Guenter Roeck
2010-06-23 15:03         ` Guenter Roeck
2010-06-23 16:34         ` Jean Delvare
2010-06-23 16:34           ` Jean Delvare
2010-06-23 17:21           ` Guenter Roeck
2010-06-23 17:21             ` Guenter Roeck
2010-06-24  0:09   ` Mark Brown
2010-06-24  0:09     ` Mark Brown
2010-06-24  6:34     ` Jean Delvare
2010-06-24  6:34       ` Jean Delvare

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