From: Chen Wang <unicorn_wang@xxxxxxxxxxx> Add binding for Sophgo SG2042 MSI controller. Signed-off-by: Chen Wang <unicorn_wang@xxxxxxxxxxx> --- .../sophgo,sg2042-msi.yaml | 78 +++++++++++++++++++ 1 file changed, 78 insertions(+) create mode 100644 Documentation/devicetree/bindings/interrupt-controller/sophgo,sg2042-msi.yaml diff --git a/Documentation/devicetree/bindings/interrupt-controller/sophgo,sg2042-msi.yaml b/Documentation/devicetree/bindings/interrupt-controller/sophgo,sg2042-msi.yaml new file mode 100644 index 000000000000..9fe99b74c211 --- /dev/null +++ b/Documentation/devicetree/bindings/interrupt-controller/sophgo,sg2042-msi.yaml @@ -0,0 +1,78 @@ +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/interrupt-controller/sophgo,sg2042-msi.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Sophgo SG2042 MSI Controller + +maintainers: + - Chen Wang <unicorn_wang@xxxxxxxxxxx> + +description: + This interrupt controller is in Sophgo SG2042 for transforming interrupts from + PCIe MSI to PLIC interrupts. + +allOf: + - $ref: /schemas/interrupts.yaml# + - $ref: /schemas/interrupt-controller/msi-controller.yaml# + +properties: + compatible: + const: sophgo,sg2042-msi + + reg: + items: + - description: clear register + + reg-names: + items: + - const: clr + + sophgo,msi-doorbell-addr: + description: + u64 value of the MSI doorbell address + $ref: /schemas/types.yaml#/definitions/uint64 + + sophgo,msi-base-vec: + description: + u32 value of the base of parent PLIC vector allocated + to MSI. + $ref: /schemas/types.yaml#/definitions/uint32 + minimum: 64 + maximum: 95 + + sophgo,msi-num-vecs: + description: + u32 value of the number of parent PLIC vectors allocated + to MSI. + $ref: /schemas/types.yaml#/definitions/uint32 + minimum: 1 + maximum: 32 + + msi-controller: true + +required: + - compatible + - reg + - reg-names + - msi-controller + - sophgo,msi-doorbell-addr + - sophgo,msi-base-vec + - sophgo,msi-num-vecs + +additionalProperties: true + +examples: + - | + #include <dt-bindings/interrupt-controller/irq.h> + msi: msi-controller@30000000 { + compatible = "sophgo,sg2042-msi"; + reg = <0x30000000 0x4>; + reg-names = "clr"; + msi-controller; + sophgo,msi-doorbell-addr = <0x00000070 0x30010300>; + sophgo,msi-base-vec = <64>; + sophgo,msi-num-vecs = <32>; + interrupt-parent = <&plic>; + }; -- 2.34.1
