Add compatible string "fsl,imx-rproc-psci" for i.MX Cortex-A Core's remoteproc support.
Signed-off-by: Jiafei Pan <[email protected]> --- .../remoteproc/fsl,imx-rproc-psci.yaml | 64 +++++++++++++++++++ 1 file changed, 64 insertions(+) create mode 100644 Documentation/devicetree/bindings/remoteproc/fsl,imx-rproc-psci.yaml diff --git a/Documentation/devicetree/bindings/remoteproc/fsl,imx-rproc-psci.yaml b/Documentation/devicetree/bindings/remoteproc/fsl,imx-rproc-psci.yaml new file mode 100644 index 000000000000..cdab9566e588 --- /dev/null +++ b/Documentation/devicetree/bindings/remoteproc/fsl,imx-rproc-psci.yaml @@ -0,0 +1,64 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/remoteproc/fsl,imx-rproc-psci.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: NXP i.MX Cortex-A Core Remote Processor via PSCI + +maintainers: + - Jiafei Pan <[email protected]> + +description: + This binding provides support for managing Cortex-A cores as remote + processors on i.MX platforms using the PSCI (Power State Coordination + Interface) for CPU power management operations. This allows single + Cortex-A core or multiple Cortex-A cores to be controlled by Linux as + a remote processor, enabling them to run RTOS or bare-metal applications. + +properties: + compatible: + const: fsl,imx-rproc-psci + + fsl,cpus-bits: + $ref: /schemas/types.yaml#/definitions/uint32 + description: + Bitmask indicating which CPU cores are assigned to this remote + processor instance. Each bit represents a CPU core, where bit N + corresponds to CPU N. For example, 0x2 (0b10) assigns CPU core 1, + while 0x6 (0b110) assigns CPU cores 1 and 2. + + memory-region: + maxItems: 1 + description: + Phandle to a reserved memory region to be used for the remote + processor's code and data. + +required: + - compatible + - fsl,cpus-bits + - memory-region + +additionalProperties: false + +examples: + - | + / { + reserved-memory { + #address-cells = <2>; + #size-cells = <2>; + ranges; + + rtos_ca55_reserved: rtos-ca55@d0000000 { + reg = <0 0xd0000000 0 0x10000000>; + no-map; + }; + }; + + remoteproc-ca55-1 { + compatible = "fsl,imx-rproc-psci"; + /* bitmask: 0b10, assign A55 Core 1 */ + fsl,cpus-bits = <0x2>; + memory-region = <&rtos_ca55_reserved>; + }; + }; -- 2.43.0
