Commit 4fd07ac0 authored by Jesse Barnes's avatar Jesse Barnes Committed by Matthew Garrett
Browse files

IPS driver: apply BIOS provided CPU limit if different from default



The BIOS may hand us a lower CPU power limit than the default for a
given SKU.  We should use it in case the platform isn't designed to
dissapate the full TDP of a given part.
Signed-off-by: default avatarJesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: default avatarMatthew Garrett <mjg@redhat.com>
parent 070c0ee1
......@@ -1391,9 +1391,10 @@ static struct ips_mcp_limits *ips_detect_cpu(struct ips_driver *ips)
tdp = turbo_power & TURBO_TDP_MASK;
/* Sanity check TDP against CPU */
if (limits->mcp_power_limit != (tdp / 8) * 1000) {
dev_warn(&ips->dev->dev, "Warning: CPU TDP doesn't match expected value (found %d, expected %d)\n",
tdp / 8, limits->mcp_power_limit / 1000);
if (limits->core_power_limit != (tdp / 8) * 1000) {
dev_info(&ips->dev->dev, "CPU TDP doesn't match expected value (found %d, expected %d)\n",
tdp / 8, limits->core_power_limit / 1000);
limits->core_power_limit = (tdp / 8) * 1000;
}
out:
......
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