diff --git a/esphome/components/debug/debug_esp8266.cpp b/esphome/components/debug/debug_esp8266.cpp
index 9248436afd..1a07ec4f3a 100644
--- a/esphome/components/debug/debug_esp8266.cpp
+++ b/esphome/components/debug/debug_esp8266.cpp
@@ -34,17 +34,24 @@ PROGMEM_STRING_TABLE(ResetReasonStrings,
 );
 // clang-format on
 static_assert(REASON_DEFAULT_RST == 0, "Reset reason enum values must match table indices");
+static_assert(REASON_WDT_RST == 1, "Reset reason enum values must match table indices");
+static_assert(REASON_EXCEPTION_RST == 2, "Reset reason enum values must match table indices");
+static_assert(REASON_SOFT_WDT_RST == 3, "Reset reason enum values must match table indices");
+static_assert(REASON_SOFT_RESTART == 4, "Reset reason enum values must match table indices");
+static_assert(REASON_DEEP_SLEEP_AWAKE == 5, "Reset reason enum values must match table indices");
 static_assert(REASON_EXT_SYS_RST == 6, "Reset reason enum values must match table indices");
 
 // PROGMEM string table for flash chip modes, indexed by mode code (0-3), with "UNKNOWN" as fallback
 PROGMEM_STRING_TABLE(FlashModeStrings, "QIO", "QOUT", "DIO", "DOUT", "UNKNOWN");
 static_assert(FM_QIO == 0, "Flash mode enum values must match table indices");
+static_assert(FM_QOUT == 1, "Flash mode enum values must match table indices");
+static_assert(FM_DIO == 2, "Flash mode enum values must match table indices");
 static_assert(FM_DOUT == 3, "Flash mode enum values must match table indices");
 
 // Get reset reason string from reason code (no heap allocation)
 // Returns LogString* pointing to flash (PROGMEM) on ESP8266
 static const LogString *get_reset_reason_str(uint32_t reason) {
-  return ResetReasonStrings::get_log_str(reason, ResetReasonStrings::LAST_INDEX);
+  return ResetReasonStrings::get_log_str(static_cast<uint8_t>(reason), ResetReasonStrings::LAST_INDEX);
 }
 
 // Size for core version hex buffer
@@ -97,8 +104,9 @@ size_t DebugComponent::get_device_info_(std::span<char, DEVICE_INFO_BUFFER_SIZE>
   constexpr size_t size = DEVICE_INFO_BUFFER_SIZE;
   char *buf = buffer.data();
 
-  // NOLINTNEXTLINE(readability-static-accessed-through-instance)
-  const LogString *flash_mode = FlashModeStrings::get_log_str(ESP.getFlashChipMode(), FlashModeStrings::LAST_INDEX);
+  const LogString *flash_mode = FlashModeStrings::get_log_str(
+      static_cast<uint8_t>(ESP.getFlashChipMode()),  // NOLINT(readability-static-accessed-through-instance)
+      FlashModeStrings::LAST_INDEX);
   uint32_t flash_size = ESP.getFlashChipSize() / 1024;       // NOLINT(readability-static-accessed-through-instance)
   uint32_t flash_speed = ESP.getFlashChipSpeed() / 1000000;  // NOLINT(readability-static-accessed-through-instance)
   ESP_LOGD(TAG, "Flash Chip: Size=%" PRIu32 "kB Speed=%" PRIu32 "MHz Mode=%s", flash_size, flash_speed,
diff --git a/esphome/components/rtttl/rtttl.cpp b/esphome/components/rtttl/rtttl.cpp
index f7b89b4aee..5a64f37da4 100644
--- a/esphome/components/rtttl/rtttl.cpp
+++ b/esphome/components/rtttl/rtttl.cpp
@@ -376,7 +376,7 @@ void Rtttl::loop() {
 }
 
 #if ESPHOME_LOG_LEVEL >= ESPHOME_LOG_LEVEL_VERBOSE
-// RTTTL state strings indexed by State enum (0-4): STOPPED, INIT, STARTING, RUNNING, STOPPING
+// RTTTL state strings indexed by State enum (0-4): STOPPED, INIT, STARTING, RUNNING, STOPPING, plus UNKNOWN fallback
 PROGMEM_STRING_TABLE(RtttlStateStrings, "STATE_STOPPED", "STATE_INIT", "STATE_STARTING", "STATE_RUNNING",
                      "STATE_STOPPING", "UNKNOWN");
 
diff --git a/esphome/components/ssd1306_base/ssd1306_base.cpp b/esphome/components/ssd1306_base/ssd1306_base.cpp
index 1220f74fbc..be99bd93da 100644
--- a/esphome/components/ssd1306_base/ssd1306_base.cpp
+++ b/esphome/components/ssd1306_base/ssd1306_base.cpp
@@ -196,6 +196,7 @@ void SSD1306::setup() {
         break;
       case SH1107_MODEL_128_64:
       case SH1107_MODEL_128_128:
+      case SSD1306_MODEL_COUNT:
         // Not used, but prevents build warning
         break;
     }