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intel_idle: add Emerald Rapids Xeon support 

commit 74528edfbc upstream.

Emerald Rapids (EMR) is the next Intel Xeon processor after Sapphire
Rapids (SPR).

EMR C-states are the same as SPR C-states, and we expect that EMR
C-state characteristics (latency and target residency) will be the
same as in SPR. Therefore, add EMR support by using SPR C-states table.

Intel-SIG: commit 74528edfbc intel_idle: add Emerald Rapids Xeon support
Backport for intel idle EMR support

Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
[ yingbao jia: amend commit log ]
Signed-off-by: yingbao jia <yingbao.jia@intel.com>
This commit is contained in:
Artem Bityutskiy 2023-01-20 11:15:28 +02:00 committed by Jianping Liu
parent d8487f51aa
commit 8a2d0e964a
1 changed files with 2 additions and 0 deletions
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2
drivers/idle/intel_idle.c
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@ -1236,6 +1236,7 @@ static const struct x86_cpu_id intel_idle_ids[] __initconst = {
INTEL_CPU_FAM6(ICELAKE_X, idle_cpu_icx),
INTEL_CPU_FAM6(ICELAKE_D, idle_cpu_icx),
INTEL_CPU_FAM6(SAPPHIRERAPIDS_X, idle_cpu_spr),
INTEL_CPU_FAM6(EMERALDRAPIDS_X, idle_cpu_spr),
INTEL_CPU_FAM6(XEON_PHI_KNL, idle_cpu_knl),
INTEL_CPU_FAM6(XEON_PHI_KNM, idle_cpu_knl),
INTEL_CPU_FAM6(ATOM_GOLDMONT, idle_cpu_bxt),
@ -1652,6 +1653,7 @@ static void __init intel_idle_init_cstates_icpu(struct cpuidle_driver *drv)
skx_idle_state_table_update();
break;
case INTEL_FAM6_SAPPHIRERAPIDS_X:
case INTEL_FAM6_EMERALDRAPIDS_X:
spr_idle_state_table_update();
break;
}