mlxsw: core: Increase critical threshold for ASIC thermal zone
authorVadim Pasternak <vadimp@nvidia.com>
Fri, 8 Jan 2021 14:52:10 +0000 (16:52 +0200)
committerJakub Kicinski <kuba@kernel.org>
Sun, 10 Jan 2021 00:25:10 +0000 (16:25 -0800)
commitb06ca3d5a43ca2dd806f7688a17e8e7e0619a80a
tree591f344b6d1cf6aa0ff76f0878e777db3a30f3e0
parent57726ebe2733891c9f59105eff028735f73d05fb
mlxsw: core: Increase critical threshold for ASIC thermal zone

Increase critical threshold for ASIC thermal zone from 110C to 140C
according to the system hardware requirements. All the supported ASICs
(Spectrum-1, Spectrum-2, Spectrum-3) could be still operational with ASIC
temperature below 140C. With the old critical threshold value system
can perform unjustified shutdown.

All the systems equipped with the above ASICs implement thermal
protection mechanism at firmware level and firmware could decide to
perform system thermal shutdown in case the temperature is below 140C.
So with the new threshold system will not meltdown, while thermal
operating range will be aligned with hardware abilities.

Fixes: 41e760841d26 ("mlxsw: core: Replace thermal temperature trips with defines")
Fixes: a50c1e35650b ("mlxsw: core: Implement thermal zone")
Signed-off-by: Vadim Pasternak <vadimp@nvidia.com>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
drivers/net/ethernet/mellanox/mlxsw/core_thermal.c