samples/boards/esp32/flash_encryption/boards/esp32.overlay - third_party/github/zephyrproject-rtos/zephyr - Git at Google

 /*
  * Copyright (c) 2022 Espressif Systems (Shanghai) Co., Ltd.
  *
  * SPDX-License-Identifier: Apache-2.0
  */

 &flash0 {
 	write-block-size = <32>;
 };
	/*
	* Copyright (c) 2022 Espressif Systems (Shanghai) Co., Ltd.
	*
	* SPDX-License-Identifier: Apache-2.0
	*/

	&flash0 {
	write-block-size = <32>;
	};