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1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)2%YAML 1.23---4$id: http://devicetree.org/schemas/bus/st,stm32-etzpc.yaml#5$schema: http://devicetree.org/meta-schemas/core.yaml#6 7title: STM32 Extended TrustZone protection controller8 9description: |10 The ETZPC configures TrustZone security in a SoC having bus masters and11 devices with programmable-security attributes (securable resources).12 13maintainers:14 - Gatien Chevallier <gatien.chevallier@foss.st.com>15 16select:17 properties:18 compatible:19 contains:20 const: st,stm32-etzpc21 required:22 - compatible23 24properties:25 compatible:26 items:27 - const: st,stm32-etzpc28 - const: simple-bus29 30 reg:31 maxItems: 132 33 "#address-cells":34 const: 135 36 "#size-cells":37 const: 138 39 ranges: true40 41 "#access-controller-cells":42 const: 143 description:44 Contains the firewall ID associated to the peripheral.45 46patternProperties:47 "^.*@[0-9a-f]+$":48 description: Peripherals49 type: object50 51 additionalProperties: true52 53 required:54 - access-controllers55 56required:57 - compatible58 - reg59 - "#address-cells"60 - "#size-cells"61 - "#access-controller-cells"62 - ranges63 64additionalProperties: false65 66examples:67 - |68 // In this example, the usart2 device refers to rifsc as its access69 // 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 };97