Patrick Rudolph has submitted this change and it was merged. ( https://review.coreboot.org/c/coreboot/+/32317 )
Change subject: mb/lenovo/t520: Fix devicetree ......................................................................
mb/lenovo/t520: Fix devicetree
Disable unused PCI devices. Reduces idle power by around 0.5Watt.
Tested on Lenovo T520.
Change-Id: I6990dc5810084261b75d2a327b6a103be44fd4cc Signed-off-by: Patrick Rudolph patrick.rudolph@9elements.com Reviewed-on: https://review.coreboot.org/c/coreboot/+/32317 Tested-by: build bot (Jenkins) no-reply@coreboot.org Reviewed-by: Arthur Heymans arthur@aheymans.xyz --- M src/mainboard/lenovo/t520/variants/t520/devicetree.cb 1 file changed, 4 insertions(+), 0 deletions(-)
Approvals: build bot (Jenkins): Verified Arthur Heymans: Looks good to me, approved
diff --git a/src/mainboard/lenovo/t520/variants/t520/devicetree.cb b/src/mainboard/lenovo/t520/variants/t520/devicetree.cb index 5f1bc60..eff2d69 100644 --- a/src/mainboard/lenovo/t520/variants/t520/devicetree.cb +++ b/src/mainboard/lenovo/t520/variants/t520/devicetree.cb @@ -88,6 +88,8 @@ device pci 1c.6 off end # PCIe Port #7 USB 3.0 only W520 device pci 1c.7 off end # PCIe Port #8 device pci 1d.0 on end # USB2 EHCI #1 + device pci 1e.0 off end # PCI-2-PCI bridge + device pci 1f.0 on #LPC bridge chip ec/lenovo/pmh7 device pnp ff.1 on # dummy @@ -167,6 +169,8 @@ device i2c 5f on end end end # SMBus + device pci 1f.5 off end # IDE controller + device pci 1f.6 off end # Thermal controller end end end