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)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Sat, 23 Jan 2021 15:04:00 +0000 (16:04 +0100)
commit82f72e41b797e94810b471a89c3d299ed90c9485
tree116aa50f48420dd5ccfdebfa6b03af3b395894fe
parentd2bfbfcc550554ab72ac7bf6d27f376baa947844
mlxsw: core: Increase critical threshold for ASIC thermal zone

[ Upstream commit b06ca3d5a43ca2dd806f7688a17e8e7e0619a80a ]

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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/net/ethernet/mellanox/mlxsw/core_thermal.c