| Tom Rini | 762f85b | 2024-07-20 11:15:10 -0600 | [diff] [blame] | 1 | # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) |
| 2 | %YAML 1.2 |
| 3 | --- |
| 4 | $id: http://devicetree.org/schemas/bus/st,stm32-etzpc.yaml# |
| 5 | $schema: http://devicetree.org/meta-schemas/core.yaml# |
| 6 | |
| 7 | title: STM32 Extended TrustZone protection controller |
| 8 | |
| 9 | description: | |
| 10 | The ETZPC configures TrustZone security in a SoC having bus masters and |
| 11 | devices with programmable-security attributes (securable resources). |
| 12 | |
| 13 | maintainers: |
| 14 | - Gatien Chevallier <gatien.chevallier@foss.st.com> |
| 15 | |
| 16 | select: |
| 17 | properties: |
| 18 | compatible: |
| 19 | contains: |
| 20 | const: st,stm32-etzpc |
| 21 | required: |
| 22 | - compatible |
| 23 | |
| 24 | properties: |
| 25 | compatible: |
| 26 | items: |
| 27 | - const: st,stm32-etzpc |
| 28 | - const: simple-bus |
| 29 | |
| 30 | reg: |
| 31 | maxItems: 1 |
| 32 | |
| 33 | "#address-cells": |
| 34 | const: 1 |
| 35 | |
| 36 | "#size-cells": |
| 37 | const: 1 |
| 38 | |
| 39 | ranges: true |
| 40 | |
| 41 | "#access-controller-cells": |
| 42 | const: 1 |
| 43 | description: |
| 44 | Contains the firewall ID associated to the peripheral. |
| 45 | |
| 46 | patternProperties: |
| 47 | "^.*@[0-9a-f]+$": |
| 48 | description: Peripherals |
| 49 | type: object |
| 50 | |
| 51 | additionalProperties: true |
| 52 | |
| 53 | required: |
| 54 | - access-controllers |
| 55 | |
| 56 | required: |
| 57 | - compatible |
| 58 | - reg |
| 59 | - "#address-cells" |
| 60 | - "#size-cells" |
| 61 | - "#access-controller-cells" |
| 62 | - ranges |
| 63 | |
| 64 | additionalProperties: false |
| 65 | |
| 66 | examples: |
| 67 | - | |
| 68 | // In this example, the usart2 device refers to rifsc as its access |
| 69 | // controller. |
| 70 | // Access rights are verified before creating devices. |
| 71 | |
| 72 | #include <dt-bindings/interrupt-controller/arm-gic.h> |
| 73 | #include <dt-bindings/clock/stm32mp13-clks.h> |
| 74 | #include <dt-bindings/reset/stm32mp13-resets.h> |
| 75 | |
| 76 | etzpc: bus@5c007000 { |
| 77 | compatible = "st,stm32-etzpc", "simple-bus"; |
| 78 | reg = <0x5c007000 0x400>; |
| 79 | #address-cells = <1>; |
| 80 | #size-cells = <1>; |
| 81 | #access-controller-cells = <1>; |
| 82 | ranges; |
| 83 | |
| 84 | usart2: serial@4c001000 { |
| 85 | compatible = "st,stm32h7-uart"; |
| 86 | reg = <0x4c001000 0x400>; |
| 87 | interrupts-extended = <&exti 27 IRQ_TYPE_LEVEL_HIGH>; |
| 88 | clocks = <&rcc USART2_K>; |
| 89 | resets = <&rcc USART2_R>; |
| 90 | wakeup-source; |
| 91 | dmas = <&dmamux1 43 0x400 0x5>, |
| 92 | <&dmamux1 44 0x400 0x1>; |
| 93 | dma-names = "rx", "tx"; |
| 94 | access-controllers = <&etzpc 17>; |
| 95 | }; |
| 96 | }; |