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authorPatrick Rudolph <patrick.rudolph@9elements.com>2019-07-15 18:04:23 +0200
committerPatrick Rudolph <siro@das-labor.org>2019-07-19 15:06:23 +0000
commitb30a47b841f1c7d55d9cf207e1cc89f1b7f7fa51 (patch)
tree26768bd5cafaf5615c4e2e80cee0835308d882d2 /src/mainboard/google/butterfly
parentfa0ef81d155a913b857055c6ce81e628ff866742 (diff)
downloadcoreboot-b30a47b841f1c7d55d9cf207e1cc89f1b7f7fa51.tar.xz
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>
Diffstat (limited to 'src/mainboard/google/butterfly')
-rw-r--r--src/mainboard/google/butterfly/devicetree.cb1
1 files changed, 0 insertions, 1 deletions
diff --git a/src/mainboard/google/butterfly/devicetree.cb b/src/mainboard/google/butterfly/devicetree.cb
index d8a0ee1c31..3c08b8bb60 100644
--- a/src/mainboard/google/butterfly/devicetree.cb
+++ b/src/mainboard/google/butterfly/devicetree.cb
@@ -66,7 +66,6 @@ chip northbridge/intel/sandybridge
register "pcie_port_coalesce" = "1"
register "c2_latency" = "101" # c2 not supported
- register "p_cnt_throttling_supported" = "1"
device pci 14.0 on end # USB 3.0 Controller
device pci 16.0 on end # Management Engine Interface 1