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linux-next/drivers/platform
David E. Box d1635448f1 platform/x86: intel_pmc_core: Ignore GBE LTR on Tiger Lake platforms
Due to a HW limitation, the Latency Tolerance Reporting (LTR) value
programmed in the Tiger Lake GBE controller is not large enough to allow
the platform to enter Package C10, which in turn prevents the platform from
achieving its low power target during suspend-to-idle.  Ignore the GBE LTR
value on Tiger Lake. LTR ignore functionality is currently performed solely
by a debugfs write call. Split out the LTR code into its own function that
can be called by both the debugfs writer and by this work around.

Signed-off-by: David E. Box <david.e.box@linux.intel.com>
Reviewed-by: Sasha Neftin <sasha.neftin@intel.com>
Cc: intel-wired-lan@lists.osuosl.org
Reviewed-by: Rajneesh Bhardwaj <irenic.rajneesh@gmail.com>
Link: https://lore.kernel.org/r/20210319201844.3305399-2-david.e.box@linux.intel.com
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
2021-03-23 21:50:14 +01:00
..
chrome chrome platform changes for 5.12 2021-02-22 09:36:23 -08:00
goldfish platform/goldfish: Convert pipe tasklet to threaded irq 2021-01-27 14:57:06 +01:00
mellanox platform/mellanox: mlxbf-pmc: Add Mellanox BlueField PMC driver 2020-10-28 12:00:24 +01:00
mips MIPS: Loongson: Fix boot warning about hwmon_device_register() 2020-07-16 10:49:55 +02:00
olpc Platform: OLPC: Constify static struct regulator_ops 2021-02-08 16:59:21 +01:00
surface platform/surface: aggregator: Fix access of unaligned value 2021-02-11 16:47:50 +01:00
x86 platform/x86: intel_pmc_core: Ignore GBE LTR on Tiger Lake platforms 2021-03-23 21:50:14 +01:00
Kconfig platform: Add Surface platform directory 2020-10-27 12:51:03 +01:00
Makefile platform: Add Surface platform directory 2020-10-27 12:51:03 +01:00