diff --git a/targets/TARGET_Silicon_Labs/TARGET_EFM32/watchdog_api.c b/targets/TARGET_Silicon_Labs/TARGET_EFM32/watchdog_api.c
index 37dbdaca59..0a3edfa773 100644
--- a/targets/TARGET_Silicon_Labs/TARGET_EFM32/watchdog_api.c
+++ b/targets/TARGET_Silicon_Labs/TARGET_EFM32/watchdog_api.c
@@ -99,7 +99,7 @@ watchdog_features_t hal_watchdog_get_platform_features(void)
     #elif defined(TARGET_EFM32GG11)
         .clock_typical_frequency = 1000,
         .clock_max_frequency = 1120
-    #elif defined(TARGET_EFM32PG) || defined(TARGET_EFM32PG12) || defined(TARGET_EFR32MG1) || defined(TARGET_EFR32MG12)
+    #elif defined(TARGET_EFR32MG1) || defined(TARGET_EFR32MG12)
         .clock_typical_frequency = 1000,
         .clock_max_frequency = 1070
     #else
diff --git a/targets/TARGET_Silicon_Labs/mbed_rtx.h b/targets/TARGET_Silicon_Labs/mbed_rtx.h
index 4e3fe32c75..3d291b522e 100644
--- a/targets/TARGET_Silicon_Labs/mbed_rtx.h
+++ b/targets/TARGET_Silicon_Labs/mbed_rtx.h
@@ -38,19 +38,13 @@
 #define INITIAL_SP              (0x20008000UL)
 #endif
 
-#elif defined(TARGET_EFM32PG)
-
-#ifndef INITIAL_SP
-#define INITIAL_SP              (0x20008000UL)
-#endif
-
 #elif defined(TARGET_EFR32MG1)
 
 #ifndef INITIAL_SP
 #define INITIAL_SP              (0x20007C00UL)
 #endif
 
-#elif defined(TARGET_EFR32MG12) || defined(TARGET_EFM32PG12)
+#elif defined(TARGET_EFR32MG12)
 
 #ifndef INITIAL_SP
 #define INITIAL_SP              (0x20040000UL)
diff --git a/targets/targets.json b/targets/targets.json
index 9586a0f4be..8375029ccd 100644
--- a/targets/targets.json
+++ b/targets/targets.json
@@ -6494,107 +6494,6 @@
             "2015"
         ]
     },
-    "EFM32PG12B500F1024GL125": {
-        "inherits": [
-            "EFM32"
-        ],
-        "extra_labels_add": [
-            "EFM32PG12",
-            "1024K",
-            "SL_CRYPTO"
-        ],
-        "core": "Cortex-M4F",
-        "macros_add": [
-            "EFM32PG12B500F1024GL125",
-            "TRANSACTION_QUEUE_SIZE_SPI=4"
-        ],
-        "supported_toolchains": [
-            "GCC_ARM",
-            "ARM",
-            "uARM",
-            "IAR"
-        ],
-        "release_versions": [
-            "2",
-            "5"
-        ],
-        "device_name": "EFM32PG12B500F1024GL125",
-        "public": false,
-        "bootloader_supported": true
-    },
-    "EFM32PG12_STK3402": {
-        "inherits": [
-            "EFM32PG12B500F1024GL125"
-        ],
-        "device_has": [
-            "ANALOGIN",
-            "CRC",
-            "I2C",
-            "I2CSLAVE",
-            "I2C_ASYNCH",
-            "INTERRUPTIN",
-            "LPTICKER",
-            "PORTIN",
-            "PORTINOUT",
-            "PORTOUT",
-            "PWMOUT",
-            "RESET_REASON",
-            "RTC",
-            "SERIAL",
-            "SERIAL_ASYNCH",
-            "SLEEP",
-            "SPI",
-            "SPISLAVE",
-            "SPI_ASYNCH",
-            "STDIO_MESSAGES",
-            "USTICKER",
-            "TRNG",
-            "FLASH",
-            "MPU",
-            "WATCHDOG"
-        ],
-        "forced_reset_timeout": 2,
-        "config": {
-            "hf_clock_src": {
-                "help": "Value: HFXO for external crystal, HFRCO for internal RC oscillator",
-                "value": "HFXO",
-                "macro_name": "CORE_CLOCK_SOURCE"
-            },
-            "hfxo_clock_freq": {
-                "help": "Value: External crystal frequency in hertz",
-                "value": "40000000",
-                "macro_name": "HFXO_FREQUENCY"
-            },
-            "lf_clock_src": {
-                "help": "Value: LFXO for external crystal, LFRCO for internal RC oscillator, ULFRCO for internal 1KHz RC oscillator",
-                "value": "LFXO",
-                "macro_name": "LOW_ENERGY_CLOCK_SOURCE"
-            },
-            "lfxo_clock_freq": {
-                "help": "Value: External crystal frequency in hertz",
-                "value": "32768",
-                "macro_name": "LFXO_FREQUENCY"
-            },
-            "hfrco_clock_freq": {
-                "help": "Value: Frequency in hertz, must correspond to setting of hfrco_band_select",
-                "value": "32000000",
-                "macro_name": "HFRCO_FREQUENCY"
-            },
-            "hfrco_band_select": {
-                "help": "Value: One of cmuHFRCOFreq_1M0Hz, cmuHFRCOFreq_2M0Hz, cmuHFRCOFreq_4M0Hz, cmuHFRCOFreq_7M0Hz, cmuHFRCOFreq_13M0Hz, cmuHFRCOFreq_16M0Hz, cmuHFRCOFreq_19M0Hz, cmuHFRCOFreq_26M0Hz, cmuHFRCOFreq_32M0Hz, cmuHFRCOFreq_38M0Hz. Be sure to set hfrco_clock_freq accordingly!",
-                "value": "cmuHFRCOFreq_32M0Hz",
-                "macro_name": "HFRCO_FREQUENCY_ENUM"
-            },
-            "board_controller_enable": {
-                "help": "Pin to pull high for enabling the USB serial port",
-                "value": "PA5",
-                "macro_name": "EFM_BC_EN"
-            }
-        },
-        "detect_code": [
-            "2040"
-        ]
-    },
     "EFR32MG12P332F1024GL125": {
         "inherits": [
             "EFM32"