zephyrproject-rtos · joelguittet · Dec 22, 2025 · Dec 22, 2025 · Feb 25, 2026 · Jan 8, 2026
diff --git a/boards/espressif/esp32_devkitc/esp32_devkitc-pinctrl.dtsi b/boards/espressif/esp32_devkitc/esp32_devkitc-pinctrl.dtsi
@@ -120,4 +120,14 @@
 				 <I2S1_I_SD_GPIO11>;
 		};
 	};
+
+	rmt_default: rmt_default {
+		group1 {
+			pinmux = <RMT_OUT0_GPIO13>;
+		};
+
+		group2 {
+			pinmux = <RMT_IN1_GPIO12>;
+		};
+	};
 };
diff --git a/boards/espressif/esp32_devkitc/esp32_devkitc_procpu.yaml b/boards/espressif/esp32_devkitc/esp32_devkitc_procpu.yaml
@@ -20,4 +20,5 @@ supported:
   - input
   - crypto
   - retained_mem
+  - rmt
 vendor: espressif
diff --git a/boards/espressif/esp32_ethernet_kit/esp32_ethernet_kit-pinctrl.dtsi b/boards/espressif/esp32_ethernet_kit/esp32_ethernet_kit-pinctrl.dtsi
@@ -58,4 +58,14 @@
 				 <I2S1_I_SD_GPIO12>;
 		};
 	};
+
+	rmt_default: rmt_default {
+		group1 {
+			pinmux = <RMT_OUT0_GPIO13>;
+		};
+
+		group2 {
+			pinmux = <RMT_IN1_GPIO12>;
+		};
+	};
 };
diff --git a/boards/espressif/esp32_ethernet_kit/esp32_ethernet_kit_procpu.yaml b/boards/espressif/esp32_ethernet_kit/esp32_ethernet_kit_procpu.yaml
@@ -13,4 +13,5 @@ supported:
   - i2s
   - crypto
   - retained_mem
+  - rmt
 vendor: espressif
diff --git a/boards/espressif/esp32c3_devkitc/esp32c3_devkitc-pinctrl.dtsi b/boards/espressif/esp32c3_devkitc/esp32c3_devkitc-pinctrl.dtsi
@@ -68,4 +68,14 @@
 				 <TWAI_RX_GPIO5>;
 		};
 	};
+
+	rmt_default: rmt_default {
+		group1 {
+			pinmux = <RMT_OUT0_GPIO13>;
+		};
+
+		group2 {
+			pinmux = <RMT_IN0_GPIO12>;
+		};
+	};
 };
diff --git a/boards/espressif/esp32c3_devkitc/esp32c3_devkitc.yaml b/boards/espressif/esp32c3_devkitc/esp32c3_devkitc.yaml
@@ -18,4 +18,5 @@ supported:
   - entropy
   - crypto
   - retained_mem
+  - rmt
 vendor: espressif
diff --git a/boards/espressif/esp32c3_devkitm/esp32c3_devkitm-pinctrl.dtsi b/boards/espressif/esp32c3_devkitm/esp32c3_devkitm-pinctrl.dtsi
@@ -68,4 +68,14 @@
 				 <TWAI_RX_GPIO5>;
 		};
 	};
+
+	rmt_default: rmt_default {
+		group1 {
+			pinmux = <RMT_OUT0_GPIO13>;
+		};
+
+		group2 {
+			pinmux = <RMT_IN0_GPIO12>;
+		};
+	};
 };
diff --git a/boards/espressif/esp32c3_devkitm/esp32c3_devkitm.yaml b/boards/espressif/esp32c3_devkitm/esp32c3_devkitm.yaml
@@ -18,4 +18,5 @@ supported:
   - entropy
   - crypto
   - retained_mem
+  - rmt
 vendor: espressif
diff --git a/boards/espressif/esp32c3_rust/esp32c3_rust-pinctrl.dtsi b/boards/espressif/esp32c3_rust/esp32c3_rust-pinctrl.dtsi
@@ -43,4 +43,14 @@
 			output-high;
 		};
 	};
+
+	rmt_default: rmt_default {
+		group1 {
+			pinmux = <RMT_OUT0_GPIO13>;
+		};
+
+		group2 {
+			pinmux = <RMT_IN0_GPIO12>;
+		};
+	};
 };
diff --git a/boards/espressif/esp32c3_rust/esp32c3_rust.yaml b/boards/espressif/esp32c3_rust/esp32c3_rust.yaml
@@ -20,4 +20,5 @@ supported:
   - entropy
   - crypto
   - retained_mem
+  - rmt
 vendor: espressif
diff --git a/boards/espressif/esp32c6_devkitc/esp32c6_devkitc_hpcore-pinctrl.dtsi b/boards/espressif/esp32c6_devkitc/esp32c6_devkitc_hpcore-pinctrl.dtsi
@@ -61,4 +61,14 @@
 				 <I2S_I_SD_GPIO23>;
 		};
 	};
+
+	rmt_default: rmt_default {
+		group1 {
+			pinmux = <RMT_OUT0_GPIO13>;
+		};
+
+		group2 {
+			pinmux = <RMT_IN0_GPIO12>;
+		};
+	};
 };
diff --git a/boards/espressif/esp32c6_devkitc/esp32c6_devkitc_hpcore.yaml b/boards/espressif/esp32c6_devkitc/esp32c6_devkitc_hpcore.yaml
@@ -20,7 +20,7 @@ supported:
   - netif:openthread
   - crypto
   - retained_mem
-
+  - rmt
 testing:
   ignore_tags:
     - bluetooth
diff --git a/boards/espressif/esp32h2_devkitm/esp32h2_devkitm-pinctrl.dtsi b/boards/espressif/esp32h2_devkitm/esp32h2_devkitm-pinctrl.dtsi
@@ -78,4 +78,14 @@
 				 <TWAI_RX_GPIO27>;
 		};
 	};
+
+	rmt_default: rmt_default {
+		group1 {
+			pinmux = <RMT_OUT0_GPIO13>;
+		};
+
+		group2 {
+			pinmux = <RMT_IN0_GPIO12>;
+		};
+	};
 };
diff --git a/boards/espressif/esp32h2_devkitm/esp32h2_devkitm.yaml b/boards/espressif/esp32h2_devkitm/esp32h2_devkitm.yaml
@@ -20,3 +20,4 @@ supported:
   - netif:openthread
   - crypto
   - retained_mem
+  - rmt
diff --git a/boards/espressif/esp32s2_devkitc/esp32s2_devkitc-pinctrl.dtsi b/boards/espressif/esp32s2_devkitc/esp32s2_devkitc-pinctrl.dtsi
@@ -84,4 +84,14 @@
 				 <I2S0_I_SD_GPIO17>;
 		};
 	};
+
+	rmt_default: rmt_default {
+		group1 {
+			pinmux = <RMT_OUT0_GPIO13>;
+		};
+
+		group2 {
+			pinmux = <RMT_IN1_GPIO12>;
+		};
+	};
 };
diff --git a/boards/espressif/esp32s2_devkitc/esp32s2_devkitc.yaml b/boards/espressif/esp32s2_devkitc/esp32s2_devkitc.yaml
@@ -22,6 +22,7 @@ supported:
   - dma
   - crypto
   - retained_mem
+  - rmt
 testing:
   ignore_tags:
     - bluetooth

diff --git a/boards/espressif/esp32s2_saola/esp32s2_saola-pinctrl.dtsi b/boards/espressif/esp32s2_saola/esp32s2_saola-pinctrl.dtsi
@@ -84,4 +84,14 @@
 				 <I2S0_I_SD_GPIO17>;
 		};
 	};
+
+	rmt_default: rmt_default {
+		group1 {
+			pinmux = <RMT_OUT0_GPIO13>;
+		};
+
+		group2 {
+			pinmux = <RMT_IN1_GPIO12>;
+		};
+	};
 };
diff --git a/boards/espressif/esp32s2_saola/esp32s2_saola.yaml b/boards/espressif/esp32s2_saola/esp32s2_saola.yaml
@@ -20,6 +20,7 @@ supported:
   - input
   - crypto
   - retained_mem
+  - rmt
 testing:
   ignore_tags:
     - bluetooth

diff --git a/boards/espressif/esp32s3_devkitc/esp32s3_devkitc-pinctrl.dtsi b/boards/espressif/esp32s3_devkitc/esp32s3_devkitc-pinctrl.dtsi
@@ -113,4 +113,14 @@
 				 <TWAI_RX_GPIO6>;
 		};
 	};
+
+	rmt_default: rmt_default {
+		group1 {
+			pinmux = <RMT_OUT3_GPIO13>;
+		};
+
+		group2 {
+			pinmux = <RMT_IN3_GPIO12>;
+		};
+	};
 };
diff --git a/boards/espressif/esp32s3_devkitc/esp32s3_devkitc_procpu.yaml b/boards/espressif/esp32s3_devkitc/esp32s3_devkitc_procpu.yaml
@@ -20,4 +20,5 @@ supported:
   - video
   - crypto
   - retained_mem
+  - rmt
 vendor: espressif
diff --git a/boards/espressif/esp32s3_eye/esp32s3_eye-pinctrl.dtsi b/boards/espressif/esp32s3_eye/esp32s3_eye-pinctrl.dtsi
@@ -63,4 +63,14 @@
 			output-high;
 		};
 	};
+
+	rmt_default: rmt_default {
+		group1 {
+			pinmux = <RMT_OUT3_GPIO13>;
+		};
+
+		group2 {
+			pinmux = <RMT_IN3_GPIO12>;
+		};
+	};
 };
diff --git a/boards/espressif/esp32s3_eye/esp32s3_eye_procpu.yaml b/boards/espressif/esp32s3_eye/esp32s3_eye_procpu.yaml
@@ -20,4 +20,5 @@ supported:
   - video
   - crypto
   - retained_mem
+  - rmt
 vendor: espressif
diff --git a/boards/espressif/esp_wrover_kit/esp_wrover_kit-pinctrl.dtsi b/boards/espressif/esp_wrover_kit/esp_wrover_kit-pinctrl.dtsi
@@ -85,4 +85,14 @@
 			output-high;
 		};
 	};
+
+	rmt_default: rmt_default {
+		group1 {
+			pinmux = <RMT_OUT0_GPIO13>;
+		};
+
+		group2 {
+			pinmux = <RMT_IN0_GPIO12>;
+		};
+	};
 };
diff --git a/boards/espressif/esp_wrover_kit/esp_wrover_kit_procpu.yaml b/boards/espressif/esp_wrover_kit/esp_wrover_kit_procpu.yaml
@@ -19,4 +19,5 @@ supported:
   - entropy
   - crypto
   - retained_mem
+  - rmt
 vendor: espressif
diff --git a/drivers/misc/CMakeLists.txt b/drivers/misc/CMakeLists.txt
@@ -2,6 +2,7 @@
 
 # zephyr-keep-sorted-start
 add_subdirectory_ifdef(CONFIG_DEVMUX devmux)
+add_subdirectory_ifdef(CONFIG_ESPRESSIF_RMT espressif_rmt)
 add_subdirectory_ifdef(CONFIG_ETHOS_U ethos_u)
 add_subdirectory_ifdef(CONFIG_FT800 ft8xx)
 add_subdirectory_ifdef(CONFIG_GROVE_LCD_RGB grove_lcd_rgb)

diff --git a/drivers/misc/Kconfig b/drivers/misc/Kconfig
@@ -7,6 +7,7 @@ menu "Miscellaneous drivers"
 
 # zephyr-keep-sorted-start
 source "drivers/misc/devmux/Kconfig"
+source "drivers/misc/espressif_rmt/Kconfig"
 source "drivers/misc/ethos_u/Kconfig"
 source "drivers/misc/ft8xx/Kconfig"
 source "drivers/misc/grove_lcd_rgb/Kconfig"

diff --git a/drivers/misc/espressif_rmt/CMakeLists.txt b/drivers/misc/espressif_rmt/CMakeLists.txt
@@ -0,0 +1,5 @@
+# SPDX-FileCopyrightText: Copyright The Zephyr Project Contributors
+# SPDX-License-Identifier: Apache-2.0
+
+zephyr_library()
+zephyr_library_sources(rmt.c rmt_common.c rmt_encoder_bytes.c rmt_encoder_copy.c rmt_encoder_simple.c rmt_encoder.c rmt_rx.c rmt_tx.c)
diff --git a/drivers/misc/espressif_rmt/Kconfig b/drivers/misc/espressif_rmt/Kconfig
@@ -0,0 +1,41 @@
+# SPDX-FileCopyrightText: Copyright The Zephyr Project Contributors
+# SPDX-License-Identifier: Apache-2.0
+
+menuconfig ESPRESSIF_RMT
+	bool "ESP32 RMT driver"
+	default y
+	depends on DT_HAS_ESPRESSIF_ESP32_RMT_ENABLED
+	select DMA if DT_HAS_ESPRESSIF_ESP32_GDMA_ENABLED && SOC_SERIES_ESP32S3
+	help
+	  Enables the ESP32 Remote Control Transceiver driver.
+
+if ESPRESSIF_RMT
+
+config ESPRESSIF_RMT_INIT_PRIORITY
+	int "ESP32 RMT driver init priority"
+	default KERNEL_INIT_PRIORITY_DEVICE
+	help
+	  ESP32 RMT driver initialization priority in POST_KERNEL.
+
+config ESPRESSIF_RMT_TX_ISR_CACHE_SAFE
+	bool "RMT TX ISR Cache Safe"
+	help
+	  Ensure the RMT interrupt is Cache-Safe by allowing the interrupt handler to be
+	  executable when the cache is disabled (e.g. SPI Flash write).
+
+config ESPRESSIF_RMT_RX_ISR_CACHE_SAFE
+	bool "RMT RX ISR Cache Safe"
+	help
+	  Ensure the RMT interrupt is Cache-Safe by allowing the interrupt handler to be
+	  executable when the cache is disabled (e.g. SPI Flash write).
+
+config ESPRESSIF_RMT_PM
+	bool "Support for power management"
+	help
+	  If enabled, RMT driver is compiled with support for power management.
+
+module = ESPRESSIF_RMT
+module-str = espressif_rmt
+source "subsys/logging/Kconfig.template.log_config"
+
+endif
-Original file line number
+Diff line change
@@ Expand Up / @@ -20,4 +20,5 @@ supported: @@
       - input
       - crypto
       - retained_mem
+      - rmt
     vendor: espressif