cpu/intel/haswell: Raise PSI1 threshold to 20A
Haswell reference code version 1.9.0 uses the same value as Broadwell.
Change-Id: I979ea1b4ba2962bd0c55cfb9d0c291f32cf5fcad
Signed-off-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/46919
Reviewed-by: Nico Huber <nico.h@gmx.de>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
diff --git a/src/cpu/intel/haswell/haswell_init.c b/src/cpu/intel/haswell/haswell_init.c
index 920a7e7..369ace9 100644
--- a/src/cpu/intel/haswell/haswell_init.c
+++ b/src/cpu/intel/haswell/haswell_init.c
@@ -260,7 +260,7 @@
msr.hi &= 0xc0000000;
msr.hi |= (0x01 << (52 - 32)); /* PSI3 threshold - 1A. */
msr.hi |= (0x05 << (42 - 32)); /* PSI2 threshold - 5A. */
- msr.hi |= (0x0f << (32 - 32)); /* PSI1 threshold - 15A. */
+ msr.hi |= (0x14 << (32 - 32)); /* PSI1 threshold - 20A. */
if (haswell_is_ult())
msr.hi |= (1 << (62 - 32)); /* Enable PSI4 */