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author | Chanh Nguyen <chanh@os.amperecomputing.com> | 2021-06-11 13:05:38 +0300 |
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committer | Thang Q. Nguyen <thang@os.amperecomputing.com> | 2021-06-13 16:39:28 +0300 |
commit | cf71ae0b18d0526b54d167139d6ea092655d2dd4 (patch) | |
tree | c509ecea50fc60f163ed6c9e1b4ea6e5e0b9b49d /meta-ampere/meta-jade/conf | |
parent | 6d81c0777fa6230bbec25cea0c4144345c740f2d (diff) | |
download | openbmc-cf71ae0b18d0526b54d167139d6ea092655d2dd4.tar.xz |
meta-ampere: Support software workaround for PSU redundancy issue
When system only uses single PSU ( ex : PSU1 ) to power ON normal 12V,
HSC2 will be trigged Fault event (FET health).
At this time, plugging in PSU2 in system, the PSU2 won't deliver power to
+12V_MB because HSC2 is protected by Fault event.
Due to HSC2 protected, the PSU redundancy mechanism can't be created.
Once PSU1 is plugged out at this moment, system will crash ( reset )
because +12V_MB dropped.
Support detecting PSU plug event and reset the Hot-Swap feature by
disabling and then enabling again it through PMBUS command to clear the
event.
Tested:
1. Plug only PSU1 to power ON system (12V)
2. Wait until host is booted, check POUT:
$ ipmitool sdr | grep "POUT"
PSU1_POUT | 112 Watts | ok
PSU2_POUT | 0 Watts | ok
3. Plug in PSU2 in system, check POUT:
$ ipmitool sdr | grep "POUT"
PSU1_POUT | 64 Watts | ok
PSU2_POUT | 48 Watts | ok
4. Unplug AC power PSU1, check POUT:
$ ipmitool sdr | grep "POUT"
PSU1_POUT | 0 Watts | ok
PSU2_POUT | 128 Watts | ok
5. Plug in AC power PSU1, check POUT:
$ ipmitool sdr | grep "POUT"
PSU1_POUT | 80 Watts | ok
PSU2_POUT | 64 Watts | ok
6. Repeat 1. to 5. with PSU2.
Signed-off-by: Chanh Nguyen <chanh@os.amperecomputing.com>
Change-Id: Ia6e00cd7b08de48059f2450e7eaf108418d0a026
Diffstat (limited to 'meta-ampere/meta-jade/conf')
0 files changed, 0 insertions, 0 deletions