From: Nikita Travkin <nikitos.tr@xxxxxxxxx> Add DT bindings for memshare: QMI service that allocates memory per remote processor request. Signed-off-by: Nikita Travkin <nikitos.tr@xxxxxxxxx> --- .../bindings/soc/qcom/qcom,memshare.yaml | 109 ++++++++++++++++++ include/dt-bindings/soc/qcom,memshare.h | 10 ++ 2 files changed, 119 insertions(+) create mode 100644 Documentation/devicetree/bindings/soc/qcom/qcom,memshare.yaml create mode 100644 include/dt-bindings/soc/qcom,memshare.h diff --git a/Documentation/devicetree/bindings/soc/qcom/qcom,memshare.yaml b/Documentation/devicetree/bindings/soc/qcom/qcom,memshare.yaml new file mode 100644 index 000000000000..ebdf128b066c --- /dev/null +++ b/Documentation/devicetree/bindings/soc/qcom/qcom,memshare.yaml @@ -0,0 +1,109 @@ +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) +%YAML 1.2 +--- +$id: "http://devicetree.org/schemas/soc/qcom/qcom,memshare.yaml#"; +$schema: "http://devicetree.org/meta-schemas/core.yaml#"; + +title: Qualcomm QMI Shared Memory Service + +description: | + This driver provides a QMI service that allows remote processors (like modem) + to request additional memory. It is used for applications like GPS in modem. + +maintainers: + - Nikita Travkin <nikitos.tr@xxxxxxxxx> + +properties: + compatible: + const: qcom,memshare + + qcom,legacy-client: + $ref: /schemas/types.yaml#/definitions/phandle + description: Phandle to a memshare client node used for legacy requests. + + "#address-cells": + const: 1 + + "#size-cells": + const: 0 + +patternProperties: + "^.*@[0-9]+$": + type: object + + properties: + reg: + description: Proc-ID for clients in this node. + + qcom,qrtr-node: + $ref: /schemas/types.yaml#/definitions/uint32 + description: Node from which the requests are expected. + + "#address-cells": + const: 1 + + "#size-cells": + const: 0 + + patternProperties: + "^.*@[0-9]+$": + type: object + + properties: + reg: + description: ID of this client. + + memory-region: + $ref: /schemas/types.yaml#/definitions/phandle + description: | + Reserved memory region that should be used for allocation. + + required: + - reg + + required: + - reg + - qcom,qrtr-node + +required: + - compatible + +additionalProperties: false + +examples: + - | + #include <dt-bindings/soc/qcom,memshare.h> + + reserved-memory { + + #address-cells = <2>; + #size-cells = <2>; + + gps_mem: gps@93c00000 { + reg = <0x0 0x93c00000 0x0 0x200000>; + no-map; + }; + }; + + memshare { + compatible = "qcom,memshare"; + qcom,legacy-client = <&memshare_gps>; + + #address-cells = <1>; + #size-cells = <0>; + + mpss@0 { + reg = <MEMSHARE_PROC_MPSS_V01>; + qcom,qrtr-node = <0>; + + #address-cells = <1>; + #size-cells = <0>; + + memshare_gps: gps@0 { + reg = <0>; + memory-region = <&gps_mem>; + }; + }; + }; + +... diff --git a/include/dt-bindings/soc/qcom,memshare.h b/include/dt-bindings/soc/qcom,memshare.h new file mode 100644 index 000000000000..4cef1ef75d09 --- /dev/null +++ b/include/dt-bindings/soc/qcom,memshare.h @@ -0,0 +1,10 @@ +/* SPDX-License-Identifier: GPL-2.0 */ + +#ifndef __DT_QCOM_MEMSHARE_H__ +#define __DT_QCOM_MEMSHARE_H__ + +#define MEMSHARE_PROC_MPSS_V01 0 +#define MEMSHARE_PROC_ADSP_V01 1 +#define MEMSHARE_PROC_WCNSS_V01 2 + +#endif /* __DT_QCOM_MEMSHARE_H__ */ -- 2.27.0
