--- /dev/null
+[
+   {
+           "BriefDescription": "ddr cycles event",
+           "EventCode": "0x00",
+           "EventName": "imx8mm_ddr.cycles",
+           "Unit": "imx8_ddr",
+           "Compat": "i.MX8MM"
+   },
+   {
+           "BriefDescription": "ddr read-cycles event",
+           "EventCode": "0x2a",
+           "EventName": "imx8mm_ddr.read_cycles",
+           "Unit": "imx8_ddr",
+           "Compat": "i.MX8MM"
+   },
+   {
+           "BriefDescription": "ddr write-cycles event",
+           "EventCode": "0x2b",
+           "EventName": "imx8mm_ddr.write_cycles",
+           "Unit": "imx8_ddr",
+           "Compat": "i.MX8MM"
+   },
+   {
+           "BriefDescription": "ddr read event",
+           "EventCode": "0x35",
+           "EventName": "imx8mm_ddr.read",
+           "Unit": "imx8_ddr",
+           "Compat": "i.MX8MM"
+   },
+   {
+           "BriefDescription": "ddr write event",
+           "EventCode": "0x38",
+           "EventName": "imx8mm_ddr.write",
+           "Unit": "imx8_ddr",
+           "Compat": "i.MX8MM"
+   }
+]
+
+
 
--- /dev/null
+[
+   {
+           "BriefDescription": "bytes all masters read from ddr based on read-cycles event",
+           "MetricName": "imx8mm_ddr_read.all",
+           "MetricExpr": "imx8mm_ddr.read_cycles * 4 * 4",
+           "ScaleUnit": "9.765625e-4KB",
+           "Unit": "imx8_ddr",
+           "Compat": "i.MX8MM"
+    },
+   {
+           "BriefDescription": "bytes all masters write to ddr based on write-cycles event",
+           "MetricName": "imx8mm_ddr_write.all",
+           "MetricExpr": "imx8mm_ddr.write_cycles * 4 * 4",
+           "ScaleUnit": "9.765625e-4KB",
+           "Unit": "imx8_ddr",
+           "Compat": "i.MX8MM"
+    }
+]
 
        { "hisi_sccl,ddrc", "hisi_sccl,ddrc" },
        { "hisi_sccl,hha", "hisi_sccl,hha" },
        { "hisi_sccl,l3c", "hisi_sccl,l3c" },
+       /* it's not realistic to keep adding these, we need something more scalable ... */
+       { "imx8_ddr", "imx8_ddr" },
        { "L3PMC", "amd_l3" },
        { "DFPMC", "amd_df" },
        {}