1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) 2%YAML 1.2 3--- 4$id: "http://devicetree.org/schemas/arm/amlogic/amlogic,meson-mx-secbus2.yaml#" 5$schema: "http://devicetree.org/meta-schemas/core.yaml#" 6 7title: Amlogic Meson8/Meson8b/Meson8m2 SECBUS2 register interface 8 9maintainers: 10 - Martin Blumenstingl <martin.blumenstingl@googlemail.com> 11 12description: | 13 The Meson8/Meson8b/Meson8m2 SoCs have a register bank called SECBUS2 which 14 contains registers for various IP blocks such as pin-controller bits for 15 the BSD_EN and TEST_N GPIOs as well as some AO ARC core control bits. 16 The registers can be accessed directly when not running in "secure mode". 17 When "secure mode" is enabled then these registers have to be accessed 18 through secure monitor calls. 19 20properties: 21 compatible: 22 items: 23 - enum: 24 - amlogic,meson8-secbus2 25 - amlogic,meson8b-secbus2 26 - const: syscon 27 28 reg: 29 maxItems: 1 30 31required: 32 - compatible 33 - reg 34 35additionalProperties: false 36 37examples: 38 - | 39 secbus2: system-controller@4000 { 40 compatible = "amlogic,meson8-secbus2", "syscon"; 41 reg = <0x4000 0x2000>; 42 }; 43