dts: esp32s3: add TRNG support

Add True Random Number Generator support on esp32s3 Signed-off-by: Lucas Tamborrino <[email protected]>
maxpark · Mar 23, 2023 · 7486fe7 · 7486fe7
1 parent d5672c9
commit 7486fe7
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diff --git a/boards/xtensa/esp32s3_devkitm/Kconfig.defconfig b/boards/xtensa/esp32s3_devkitm/Kconfig.defconfig
@@ -6,3 +6,6 @@
 config BOARD
 	default "esp32s3_devkitm"
 	depends on BOARD_ESP32S3_DEVKITM
+
+config ENTROPY_GENERATOR
+	default y
diff --git a/boards/xtensa/esp32s3_devkitm/doc/index.rst b/boards/xtensa/esp32s3_devkitm/doc/index.rst
@@ -96,6 +96,8 @@ Current Zephyr's ESP32-S3-DevKitM board supports the following features:
 +------------+------------+-------------------------------------+
 | Watchdog   | on-chip    | watchdog                            |
 +------------+------------+-------------------------------------+
+| TRNG       | on-chip    | entropy                             |
++------------+------------+-------------------------------------+
 
 Prerequisites
 -------------

diff --git a/boards/xtensa/esp32s3_devkitm/esp32s3_devkitm.dts b/boards/xtensa/esp32s3_devkitm/esp32s3_devkitm.dts
@@ -109,6 +109,10 @@
 	status = "okay";
 };
 
+&trng0 {
+	status = "okay";
+};
+
 &flash0 {
 	status = "okay";
 	partitions {

diff --git a/boards/xtensa/esp32s3_devkitm/esp32s3_devkitm.yaml b/boards/xtensa/esp32s3_devkitm/esp32s3_devkitm.yaml
@@ -11,6 +11,7 @@ supported:
   - spi
   - counter
   - watchdog
+  - entropy
 testing:
   ignore_tags:
     - net

diff --git a/dts/xtensa/espressif/esp32s3.dtsi b/dts/xtensa/espressif/esp32s3.dtsi
@@ -13,6 +13,7 @@
 
 / {
 	chosen {
+		zephyr,entropy = &trng0;
 		zephyr,flash-controller = &flash;
 	};
 
@@ -251,5 +252,11 @@
 			clocks = <&rtc ESP32_TIMG1_MODULE>;
 			status = "disabled";
 		};
+
+		trng0: trng@6003507c {
+			compatible = "espressif,esp32-trng";
+			reg = <0x6003507c 0x4>;
+			status = "disabled";
+		};
 	};
 };
-Original file line number
+Diff line change
@@ Expand Up @@
     +------------+------------+-------------------------------------+
     | Watchdog   | on-chip    | watchdog                            |
     +------------+------------+-------------------------------------+
+    | TRNG       | on-chip    | entropy                             |
+    +------------+------------+-------------------------------------+
     Prerequisites
     -------------
@@ Expand Down @@