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Doc: driver-api: ipmi: Add description of alerts_broken module param

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Add description about alerts_broken module parameter of ipmi_ssif driver
which skips enabling SMBus alert during setup.

Signed-off-by: Misono Tomohiro <misono.tomohiro@jp.fujitsu.com>
Message-Id: <20200624065405.17653-3-misono.tomohiro@jp.fujitsu.com>
Signed-off-by: Corey Minyard <cminyard@mvista.com>
This commit is contained in:
Misono Tomohiro 2020-06-24 15:54:05 +09:00 committed by Corey Minyard
parent a5dc8300df
commit c8e0506f88
1 changed files with 4 additions and 0 deletions
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4
Documentation/driver-api/ipmi.rst
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@ -516,6 +516,7 @@ at module load time (for a module) with::
slave_addrs=<addr1>,<addr2>,...
tryacpi=[0|1] trydmi=[0|1]
[dbg_probe=1]
alerts_broken
The addresses are normal I2C addresses. The adapter is the string
name of the adapter, as shown in /sys/class/i2c-adapter/i2c-<n>/name.
@ -537,6 +538,9 @@ The slave_addrs specifies the IPMI address of the local BMC. This is
usually 0x20 and the driver defaults to that, but in case it's not, it
can be specified when the driver starts up.
alerts_broken does not enable SMBus alert for SSIF. Otherwise SMBus
alert will be enabled on supported hardware.
Discovering the IPMI compliant BMC on the SMBus can cause devices on
the I2C bus to fail. The SMBus driver writes a "Get Device ID" IPMI
message as a block write to the I2C bus and waits for a response.