DT

kernel DT:
&m4_rproc{
	memory-region = <&retram>, <&mcuram>, <&mcuram2>, <&vdev0vring0>,
			<&vdev0vring1>, <&vdev0buffer>;
	mboxes = <&ipcc 0>, <&ipcc 1>, <&ipcc 2>;
	mbox-names = "vq0", "vq1", "shutdown";
	interrupt-parent = <&exti>;
	interrupts = <68 1>;
	st,auto-boot=<1>;
	status = "okay";

	m4_system_resources{
		status = "okay";
	};
};

…

&m4_adc {
	pinctrl-names = "default";
	pinctrl-0 = <&m4_adc_pins_mx>;
	vdda-supply = <&vdd>;
	vref-supply = <&vdd>;
	status = "okay";
};

&m4_dma2{
	status = "okay";
};

&m4_i2c1 {
	pinctrl-names = "default";
	pinctrl-0 = <&m4_i2c1_pins>;
	status = "okay";
};

&m4_spi3 {
	pinctrl-names = "default";
	pinctrl-0 = <&m4_spi3_pins>;
	status = "okay";
};

&m4_timers1{
	pinctrl-names = "default";
	pinctrl-0 = <&m4_tim1_pwm_pins_mx>;
	status = "okay";
};

&m4_timers3{
	pinctrl-names = "default";
	pinctrl-0 = <&m4_tim3_pwm_pins_mx>;
	status = "okay";
};

&m4_timers4{
	pinctrl-names = "default";
	pinctrl-0 = <&m4_tim4_pwm_pins_mx>;
	status = "okay";
};

&m4_timers5{
	pinctrl-names = "default";
	pinctrl-0 = <&m4_tim5_pwm_pins_mx>;
	status = "okay";
};

&m4_timers8{
	pinctrl-names = "default";
	pinctrl-0 = <&m4_tim8_pwm_pins_mx>;
	status = "okay";
};

….
&timers1{
	status = "disabled";
};

&timers3{
	status = "disabled";
};

&timers4{
	status = "disabled";
};

&timers5{
	status = "disabled";
};

&timers8{
	status = "disabled";
};

&dma2{
	status = "disabled";
};

&adc {
	status = "disabled";
};

&i2c1 {
	status = "disabled";
};

&spi3 {
	status = "disabled";
};




U-BOOT:
&m4_dma2{
	status = "okay";
};

&i2c1{
	status = "disabled";
};

&adc{
	status = "disabled";
};

&spi3{
	status = "disabled";
};

&timers1{
	status = "disabled";
};

&timers3{
	status = "disabled";
};

&timers4{
	status = "disabled";
};

&timers5{
	status = "disabled";
};

&timers8{
	status = "disabled";
};

&m4_i2c1{
	status = "okay";
};

&m4_adc{
	status = "okay";
};

&m4_spi3{
	status = "okay";
};

&m4_timers1{
	status = "okay";
};

&m4_timers3{
	status = "okay";
};

&m4_timers4{
	status = "okay";
};

&m4_timers5{
	status = "okay";
};

&m4_timers8{
	status = "okay";
};

&mdma1{
	status = "okay";
};
&m4_rproc{
	memory-region = <&retram>, <&mcuram>, <&mcuram2>, <&vdev0vring0>,
			<&vdev0vring1>, <&vdev0buffer>;
	mboxes = <&ipcc 0>, <&ipcc 1>, <&ipcc 2>;
	mbox-names = "vq0", "vq1", "shutdown";
	interrupt-parent = <&exti>;
	interrupts = <68 1>;
	status = "okay";
	
	m4_system_resources{
		status = "okay";
	};
};





OPTEE-OS:
&etzpc{
	st,decprot = <
	/*"Non Secured" peripherals*/
	DECPROT(STM32MP1_ETZPC_DMA1_ID, DECPROT_NS_RW, DECPROT_UNLOCK)
	DECPROT(STM32MP1_ETZPC_DMAMUX_ID, DECPROT_NS_RW, DECPROT_UNLOCK)
	DECPROT(STM32MP1_ETZPC_HASH1_ID, DECPROT_NS_RW, DECPROT_UNLOCK)
	DECPROT(STM32MP1_ETZPC_USART1_ID, DECPROT_NS_RW, DECPROT_UNLOCK)
	DECPROT(STM32MP1_ETZPC_UART5_ID, DECPROT_NS_RW, DECPROT_UNLOCK)
	DECPROT(STM32MP1_ETZPC_UART7_ID, DECPROT_NS_RW, DECPROT_UNLOCK)
	DECPROT(STM32MP1_ETZPC_OTG_ID, DECPROT_NS_RW, DECPROT_UNLOCK)
	DECPROT(STM32MP1_ETZPC_UART8_ID, DECPROT_NS_RW, DECPROT_UNLOCK)
	DECPROT(STM32MP1_ETZPC_SPI1_ID, DECPROT_NS_RW, DECPROT_UNLOCK)
    DECPROT(STM32MP1_ETZPC_SPI5_ID, DECPROT_NS_RW, DECPROT_UNLOCK)
	/*"Secured" peripherals*/
	DECPROT(STM32MP1_ETZPC_DDRCTRL_ID, DECPROT_NS_R_S_W, DECPROT_LOCK)
	DECPROT(STM32MP1_ETZPC_DDRPHYC_ID, DECPROT_NS_R_S_W, DECPROT_LOCK)
	DECPROT(STM32MP1_ETZPC_STGENC_ID, DECPROT_S_RW, DECPROT_UNLOCK)
	DECPROT(STM32MP1_ETZPC_RNG1_ID, DECPROT_S_RW, DECPROT_UNLOCK)
	/*"Mcu Isolation" peripherals*/
	DECPROT(STM32MP1_ETZPC_ADC_ID, DECPROT_MCU_ISOLATION, DECPROT_UNLOCK)
	DECPROT(STM32MP1_ETZPC_I2C1_ID, DECPROT_MCU_ISOLATION, DECPROT_UNLOCK)
	DECPROT(STM32MP1_ETZPC_DMA2_ID, DECPROT_MCU_ISOLATION, DECPROT_UNLOCK)
	DECPROT(STM32MP1_ETZPC_TIM1_ID, DECPROT_MCU_ISOLATION, DECPROT_UNLOCK)
	DECPROT(STM32MP1_ETZPC_TIM2_ID, DECPROT_MCU_ISOLATION, DECPROT_UNLOCK)
	DECPROT(STM32MP1_ETZPC_TIM3_ID, DECPROT_MCU_ISOLATION, DECPROT_UNLOCK)
	DECPROT(STM32MP1_ETZPC_TIM4_ID, DECPROT_MCU_ISOLATION, DECPROT_UNLOCK)
	DECPROT(STM32MP1_ETZPC_TIM5_ID, DECPROT_MCU_ISOLATION, DECPROT_UNLOCK)
	DECPROT(STM32MP1_ETZPC_TIM8_ID, DECPROT_MCU_ISOLATION, DECPROT_UNLOCK)
	DECPROT(STM32MP1_ETZPC_SPI3_ID, DECPROT_MCU_ISOLATION, DECPROT_UNLOCK)
	//DECPROT(STM32MP1_ETZPC_SPI1_ID, DECPROT_MCU_ISOLATION, DECPROT_UNLOCK)

	/*Restriction: following IDs are not managed  - please to use User-Section if needed:
		STM32MP1_ETZPC_SRAMx_ID, STM32MP1_ETZPC_RETRAM_ID, STM32MP1_ETZPC_BKPSRAM_ID*/

	/* USER CODE BEGIN etzpc_decprot */
		/*STM32CubeMX generates a basic and standard configuration for ETZPC.
		Additional device configurations can be added here if needed.
		"etzpc" node could be also overloaded in "addons" User-Section.*/
	/* USER CODE END etzpc_decprot */
	>;