| # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) |
| %YAML 1.2 |
| --- |
| $id: http://devicetree.org/schemas/bus/st,stm32-etzpc.yaml# |
| $schema: http://devicetree.org/meta-schemas/core.yaml# |
| |
| title: STM32 Extended TrustZone protection controller |
| |
| description: | |
| The ETZPC configures TrustZone security in a SoC having bus masters and |
| devices with programmable-security attributes (securable resources). |
| |
| maintainers: |
| - Gatien Chevallier <gatien.chevallier@foss.st.com> |
| |
| select: |
| properties: |
| compatible: |
| contains: |
| const: st,stm32-etzpc |
| required: |
| - compatible |
| |
| properties: |
| compatible: |
| items: |
| - const: st,stm32-etzpc |
| - const: simple-bus |
| |
| reg: |
| maxItems: 1 |
| |
| "#address-cells": |
| const: 1 |
| |
| "#size-cells": |
| const: 1 |
| |
| ranges: true |
| |
| "#access-controller-cells": |
| const: 1 |
| description: |
| Contains the firewall ID associated to the peripheral. |
| |
| patternProperties: |
| "^.*@[0-9a-f]+$": |
| description: Peripherals |
| type: object |
| |
| additionalProperties: true |
| |
| required: |
| - access-controllers |
| |
| required: |
| - compatible |
| - reg |
| - "#address-cells" |
| - "#size-cells" |
| - "#access-controller-cells" |
| - ranges |
| |
| additionalProperties: false |
| |
| examples: |
| - | |
| // In this example, the usart2 device refers to rifsc as its access |
| // controller. |
| // Access rights are verified before creating devices. |
| |
| #include <dt-bindings/interrupt-controller/arm-gic.h> |
| #include <dt-bindings/clock/stm32mp13-clks.h> |
| #include <dt-bindings/reset/stm32mp13-resets.h> |
| |
| etzpc: bus@5c007000 { |
| compatible = "st,stm32-etzpc", "simple-bus"; |
| reg = <0x5c007000 0x400>; |
| #address-cells = <1>; |
| #size-cells = <1>; |
| #access-controller-cells = <1>; |
| ranges; |
| |
| usart2: serial@4c001000 { |
| compatible = "st,stm32h7-uart"; |
| reg = <0x4c001000 0x400>; |
| interrupts-extended = <&exti 27 IRQ_TYPE_LEVEL_HIGH>; |
| clocks = <&rcc USART2_K>; |
| resets = <&rcc USART2_R>; |
| wakeup-source; |
| dmas = <&dmamux1 43 0x400 0x5>, |
| <&dmamux1 44 0x400 0x1>; |
| dma-names = "rx", "tx"; |
| access-controllers = <&etzpc 17>; |
| }; |
| }; |
