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Index: sys/dev/acpica/acpi_resource.c
===================================================================
--- sys/dev/acpica/acpi_resource.c
+++ sys/dev/acpica/acpi_resource.c
@@ -496,6 +496,13 @@
acpi_MatchHid(handle, "ARMHC9FF") != ACPI_MATCHHID_NOMATCH)
arc.ignore_producer_flag = true;
+ /*
+ * The DesignWare I2C Controller on Ampere Altra sets ResourceProducer on
+ * memory resources.
+ */
+ if (acpi_MatchHid(handle, "APMC0D0F") != ACPI_MATCHHID_NOMATCH)
+ arc.ignore_producer_flag = true;
+
status = AcpiWalkResources(handle, "_CRS", acpi_parse_resource, &arc);
if (ACPI_FAILURE(status) && status != AE_NOT_FOUND) {
printf("can't fetch resources for %s - %s\n",

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