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-rw-r--r--src/soc/intel/skylake/acpi.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/src/soc/intel/skylake/acpi.c b/src/soc/intel/skylake/acpi.c
index c3757b0bd3..d67b502ac8 100644
--- a/src/soc/intel/skylake/acpi.c
+++ b/src/soc/intel/skylake/acpi.c
@@ -760,6 +760,10 @@ const char *soc_acpi_name(const struct device *dev)
if (dev->path.type != DEVICE_PATH_PCI)
return NULL;
+ /* Only match devices on the root bus */
+ if (dev->bus && dev->bus->secondary > 0)
+ return NULL;
+
switch (dev->path.pci.devfn) {
case SA_DEVFN_ROOT: return "MCHC";
case SA_DEVFN_IGD: return "GFX0";