Roy Mingi Park has uploaded this change for review. ( https://review.coreboot.org/22240
Change subject: md/google/poppy: enable 8254 Static Clock Gating for XTAL shutdown ......................................................................
md/google/poppy: enable 8254 Static Clock Gating for XTAL shutdown
8254 Static Clock Gating should be enabled for XTAL OSC shutdown which has a power impact. And this patch should apply with https://review.coreboot.org/c/22236.
BUG=None BRANCH=None TEST=Build for kabylake board with the clock_gate_8254 policy in devicetree set to 1. iotools mmio_read32 0xfdc43300 should return 0x1f
Change-Id: Iaa37f97b5395c637fde293f48cf4589e1fe8f3fa Signed-off-by: Roy Mingi Park roy.mingi.park@intel.com --- M src/mainboard/google/poppy/variants/soraka/devicetree.cb 1 file changed, 1 insertion(+), 0 deletions(-)
git pull ssh://review.coreboot.org:29418/coreboot refs/changes/40/22240/1
diff --git a/src/mainboard/google/poppy/variants/soraka/devicetree.cb b/src/mainboard/google/poppy/variants/soraka/devicetree.cb index 1c342a4..40f0f0f 100644 --- a/src/mainboard/google/poppy/variants/soraka/devicetree.cb +++ b/src/mainboard/google/poppy/variants/soraka/devicetree.cb @@ -60,6 +60,7 @@ register "PmConfigSlpSusMinAssert" = "1" # 500ms register "PmConfigSlpAMinAssert" = "3" # 2s register "PmTimerDisabled" = "1" + register "clock_gate_8254" = "1" # CGE for 8254 PIT
register "pirqa_routing" = "PCH_IRQ11" register "pirqb_routing" = "PCH_IRQ10"