sb/intel/{bd82x6x|ibexpeak}: Drop p_cnt_throttling_supported
The processor P_BLK doesn't support throttling. This behaviour could be
emulated with SMM, but instead just update the FADT to indicate no support
for legacy I/O based throttling using P_CNT.
We have _PTC defined in SSDT, which should be used in favour of P_CNT by
ACPI aware OS, so this change has no effect on modern OS.
Drop all occurences of p_cnt_throttling_supported and update autoport
to not generate it any more.
Change-Id: Iaf82518d5114d6de7cef01dca2d3087eea8ff927
Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/34351
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Nico Huber <nico.h@gmx.de>
diff --git a/src/southbridge/intel/bd82x6x/lpc.c b/src/southbridge/intel/bd82x6x/lpc.c
index 8794602..bd3c993 100644
--- a/src/southbridge/intel/bd82x6x/lpc.c
+++ b/src/southbridge/intel/bd82x6x/lpc.c
@@ -768,12 +768,10 @@
fadt->p_lvl3_lat = 87;
fadt->flush_size = 1024;
fadt->flush_stride = 16;
- fadt->duty_offset = 1;
- if (chip->p_cnt_throttling_supported) {
- fadt->duty_width = 3;
- } else {
- fadt->duty_width = 0;
- }
+ /* P_CNT not supported */
+ fadt->duty_offset = 0;
+ fadt->duty_width = 0;
+
fadt->day_alrm = 0xd;
fadt->mon_alrm = 0x00;
fadt->century = 0x00;