[Accton AS7712]: Add lpmode in sfputil.py#2896
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lguohan merged 1 commit intosonic-net:masterfrom May 15, 2019
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Signed-off-by: brandon_chuang <brandon_chuang@CicadaBuildServer.accton.com.tw>
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Signed-off-by: brandon_chuang <brandon_chuang@CicadaBuildServer.accton.com.tw>
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CPU: Intel Atom® Processor C2538
MAC: Broadcom Tomahawk, 1 pcs, 3200Gbs multi-layer Ethernet switch controller
BMC: None
What I did
Add lpmode in sfputil.py for as7712-32x.
.
How I did it
Implement get_low_power_mode/set_low_power_mode in sfputil.py
How to verify it
sfputil show lpmode
sfputil lpmode off
sfputil lpmode on
Description for the changelog
Access eeprom from transceiver to get/set lpmode status
If "Power override" bit is not set, return the H/W pin status depended on H/W design.
For as7712-32x, this pin is pulled low which is High Power Mode.
If "Power override" bit is set, retrun the S/W lpmode status read from eeprom.
Below is the Power Mode Truth Table defined in sff-8436
LPMode_Pin Power_overide_Bit Power_set_Bit Module_Power_Allowed
1 0 X Low Power
0 0 X High Power
X 1 1 Low Power
X 1 0 High Power