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peppy: Disable unused clocks

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CLKOUT for PCIE ports 2-5 and CLKOUT_XDP are not used
and can be disabled.

This change was modled after the change made in Falco:
Falco-Change-Id: I0f996e90f0ae42780de3a0c8dc5db00ec600748b

The only difference per schematic for Peppy was PCIe 1 supports
a NGFF interface. PCIe 0 is connected to WLAN.

BUG=chrome-os-partner:21780
BRANCH=peppy
TEST=manual

Change-Id: Ib4871cb2655316cb260ab33ada6b9d81f271377f
Signed-off-by: Steven Sherk <steven.sherk@se-eng.com>
Reviewed-on: https://gerrit.chromium.org/gerrit/66693
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Tested-by: Shawn Nematbakhsh <shawnn@chromium.org>
Commit-Queue: Shawn Nematbakhsh <shawnn@chromium.org>
This commit is contained in:
Steven Sherk 2013-08-22 14:30:48 -06:00 • committed by ChromeBot
commit 8f12335013
1 changed files with 3 additions and 0 deletions
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3
src/mainboard/google/peppy/devicetree.cb
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@ -81,6 +81,9 @@ chip northbridge/intel/haswell
# Force enable ASPM for PCIe Port1
register "pcie_port_force_aspm" = "0x01"
# Disable PCIe CLKOUT 2-5 and CLKOUT_XDP
register "icc_clock_disable" = "0x013c0000"
device pci 13.0 off end # Smart Sound Audio DSP
device pci 14.0 on end # USB3 XHCI
device pci 15.0 on end # Serial I/O DMA