diff --git a/hw/sensor/isl_pmbus_vr.c b/hw/sensor/isl_pmbus_vr.c
index e11e028884..799ea9d89e 100644
--- a/hw/sensor/isl_pmbus_vr.c
+++ b/hw/sensor/isl_pmbus_vr.c
@@ -15,6 +15,18 @@
 
 static uint8_t isl_pmbus_vr_read_byte(PMBusDevice *pmdev)
 {
+    ISLState *s = ISL69260(pmdev);
+
+    switch (pmdev->code) {
+    case PMBUS_IC_DEVICE_ID:
+        if (!s->ic_device_id_len) {
+            break;
+        }
+        pmbus_send(pmdev, s->ic_device_id, s->ic_device_id_len);
+        pmbus_idle(pmdev);
+        return 0;
+    }
+
     qemu_log_mask(LOG_GUEST_ERROR,
                   "%s: reading from unsupported register: 0x%02x\n",
                   __func__, pmdev->code);
diff --git a/include/hw/sensor/isl_pmbus_vr.h b/include/hw/sensor/isl_pmbus_vr.h
index 3e47ff7e48..aa2c2767df 100644
--- a/include/hw/sensor/isl_pmbus_vr.h
+++ b/include/hw/sensor/isl_pmbus_vr.h
@@ -12,12 +12,17 @@
 #include "hw/i2c/pmbus_device.h"
 #include "qom/object.h"
 
+#define TYPE_ISL69259   "isl69259"
 #define TYPE_ISL69260   "isl69260"
 #define TYPE_RAA228000  "raa228000"
 #define TYPE_RAA229004  "raa229004"
+#define ISL_MAX_IC_DEVICE_ID_LEN 16
 
 struct ISLState {
     PMBusDevice parent;
+
+    uint8_t ic_device_id[ISL_MAX_IC_DEVICE_ID_LEN];
+    uint8_t ic_device_id_len;
 };
 
 OBJECT_DECLARE_SIMPLE_TYPE(ISLState, ISL69260)