mainboard/google/puff: Enable net driver on pcie ep

Let coreboot know there is a NIC device on the end so
that the mac from vpd is set at early boot.

Properly configure the link-leds in devicetree s.t.
valid values are written out to the register at initialization.

BUG=b:146592075,146999042,146999043
BRANCH=none
TEST=Boot to kernel.
     Insert mac address into VPD
       vpd -s ethernet_mac=<address>
     reboot the system.
     Ensure we have ip address and corresponding mac
     address with ifconfig.
     Ensure ethernet controller shows up with lspci.

Change-Id: I76ce6d8a5a26842fcb2544ee96567fe0da8603b1
Signed-off-by: Edward O'Callaghan <quasisec@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/38003
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Daniel Kurtz <djkurtz@google.com>

1 files changed, 6 insertions, 1 deletions

diff --git a/src/mainboard/google/hatch/variants/puff/overridetree.cb b/src/mainboard/google/hatch/variants/puff/overridetree.cb
index 342994d90a..4385e981b8 100644
--- a/src/mainboard/google/hatch/variants/puff/overridetree.cb
+++ b/src/mainboard/google/hatch/variants/puff/overridetree.cb
@@ -179,7 +179,12 @@ chip soc/intel/cannonlake
 			end
 		end #I2C #4
 		device pci 1a.0 on  end # eMMC
-		device pci 1c.0 on  end # FSP requires func0 be enabled.
+		device pci 1c.0 on
+			chip drivers/net
+				register "customized_leds" = "0x05af"
+				device pci 00.0 on end
+			end
+		end # FSP requires func0 be enabled.
 		device pci 1c.6 on  end # RTL8111H Ethernet NIC (becomes RP1).
 		device pci 1e.3 off end # GSPI #1
 	end