From d9e5017e993999cdf966578b4aa8655d86400f20 Mon Sep 17 00:00:00 2001
From: marif-nexthop <marif@nexthop.ai>
Date: Tue, 21 Jul 2026 10:06:02 -0700
Subject: [PATCH] [Nexthop][m4062nhp] Add embedded sensors

Add the embedded temperature sensor devices on the m4062nhp SCM (CPU
TCTL/TCCD, NVMe composite, NIC PHY/MAC) to platform_manager and
sensor_service, with thresholds from the hardware thermal spec.
---
 .../configs/m4062nhp/platform_manager.json    | 17 ++++++
 .../configs/m4062nhp/sensor_service.json      | 60 +++++++++++++++++++
 2 files changed, 77 insertions(+)

diff --git a/fboss/platform/configs/m4062nhp/platform_manager.json b/fboss/platform/configs/m4062nhp/platform_manager.json
index ca73516401ece..928900f72f5e1 100644
--- a/fboss/platform/configs/m4062nhp/platform_manager.json
+++ b/fboss/platform/configs/m4062nhp/platform_manager.json
@@ -59,6 +59,20 @@
           "isEeprom": true
         }
       ],
+      "embeddedSensorConfigs": [
+        {
+          "pmUnitScopedName": "CPU_TEMP",
+          "sysfsPath": "/sys/bus/pci/drivers/k10temp/0000:00:18.3"
+        },
+        {
+          "pmUnitScopedName": "NVME_TEMP",
+          "sysfsPath": "/sys/class/nvme/nvme0"
+        },
+        {
+          "pmUnitScopedName": "NIC_TEMP",
+          "sysfsPath": "/sys/bus/pci/devices/0000:02:00.0"
+        }
+      ],
       "outgoingSlotConfigs": {
         "SMB_SLOT@0": {
           "slotType": "SMB_SLOT"
@@ -430,6 +444,9 @@
     "/run/devmap/eeproms/PSU4_EEPROM": "/SMB_SLOT@0/[PSU4_EEPROM]",
     "/run/devmap/sensors/DPM": "/[DPM]",
     "/run/devmap/sensors/DPM_2": "/[DPM_2]",
+    "/run/devmap/sensors/CPU_TEMP": "/[CPU_TEMP]",
+    "/run/devmap/sensors/NVME_TEMP": "/[NVME_TEMP]",
+    "/run/devmap/sensors/NIC_TEMP": "/[NIC_TEMP]",
     "/run/devmap/sensors/SWITCH_CARD_TEMP_SENSOR": "/SMB_SLOT@0/[SWITCH_CARD_TEMP_SENSOR]",
     "/run/devmap/fpgas/SCM_IOB": "/[SCM_IOB]",
     "/run/devmap/i2c-busses/SCM_IOB_I2C_0": "/[SCM_IOB_I2C_0]",
diff --git a/fboss/platform/configs/m4062nhp/sensor_service.json b/fboss/platform/configs/m4062nhp/sensor_service.json
index 3c4cafb57bdbc..dd299cece4d26 100644
--- a/fboss/platform/configs/m4062nhp/sensor_service.json
+++ b/fboss/platform/configs/m4062nhp/sensor_service.json
@@ -24,6 +24,66 @@
             "lowerCriticalVal": 9
           },
           "compute": "@/1000.0"
+        },
+        {
+          "name": "CPU_TCTL_TEMP",
+          "sysfsPath": "/run/devmap/sensors/CPU_TEMP/temp1_input",
+          "type": 3,
+          "thresholds": {
+            "maxAlarmVal": 95,
+            "upperCriticalVal": 120
+          },
+          "compute": "@/1000.0"
+        },
+        {
+          "name": "CPU_TCCD1_TEMP",
+          "sysfsPath": "/run/devmap/sensors/CPU_TEMP/temp3_input",
+          "type": 3,
+          "thresholds": {
+            "maxAlarmVal": 95,
+            "upperCriticalVal": 120
+          },
+          "compute": "@/1000.0"
+        },
+        {
+          "name": "CPU_TCCD2_TEMP",
+          "sysfsPath": "/run/devmap/sensors/CPU_TEMP/temp4_input",
+          "type": 3,
+          "thresholds": {
+            "maxAlarmVal": 95,
+            "upperCriticalVal": 120
+          },
+          "compute": "@/1000.0"
+        },
+        {
+          "name": "NVME_COMPOSITE_TEMP",
+          "sysfsPath": "/run/devmap/sensors/NVME_TEMP/temp1_input",
+          "type": 3,
+          "thresholds": {
+            "maxAlarmVal": 90,
+            "upperCriticalVal": 95
+          },
+          "compute": "@/1000.0"
+        },
+        {
+          "name": "NIC_PHY_TEMP",
+          "sysfsPath": "/run/devmap/sensors/NIC_TEMP/temp1_input",
+          "type": 3,
+          "thresholds": {
+            "maxAlarmVal": 100,
+            "upperCriticalVal": 110
+          },
+          "compute": "@/1000.0"
+        },
+        {
+          "name": "NIC_MAC_TEMP",
+          "sysfsPath": "/run/devmap/sensors/NIC_TEMP/temp2_input",
+          "type": 3,
+          "thresholds": {
+            "maxAlarmVal": 100,
+            "upperCriticalVal": 110
+          },
+          "compute": "@/1000.0"
         }
       ]
     },