48 lines · yaml
1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)2%YAML 1.23---4$id: http://devicetree.org/schemas/reserved-memory/nvidia,tegra264-bpmp-shmem.yaml#5$schema: http://devicetree.org/meta-schemas/core.yaml#6 7title: Tegra CPU-NS - BPMP IPC reserved memory8 9maintainers:10 - Peter De Schrijver <pdeschrijver@nvidia.com>11 12description: |13 Define a memory region used for communication between CPU-NS and BPMP.14 Typically this node is created by the bootloader as the physical address15 has to be known to both CPU-NS and BPMP for correct IPC operation.16 The memory region is defined using a child node under /reserved-memory.17 The sub-node is named shmem@<address>.18 19allOf:20 - $ref: reserved-memory.yaml21 22properties:23 compatible:24 const: nvidia,tegra264-bpmp-shmem25 26 reg:27 description: The physical address and size of the shared SDRAM region28 29unevaluatedProperties: false30 31required:32 - compatible33 - reg34 - no-map35 36examples:37 - |38 reserved-memory {39 #address-cells = <2>;40 #size-cells = <2>;41 dram_cpu_bpmp_mail: shmem@f1be0000 {42 compatible = "nvidia,tegra264-bpmp-shmem";43 reg = <0x0 0xf1be0000 0x0 0x2000>;44 no-map;45 };46 };47...48