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Commit e96fc4f7 authored by Linux Build Service Account's avatar Linux Build Service Account Committed by Gerrit - the friendly Code Review server
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Merge "defconfig: Enable ADSP RPC driver"

parents 034d5c65 a59d10c6

Documentation/devicetree/bindings/qdsp/msm-fastrpc.txt

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Qualcomm Technologies, Inc. FastRPC Driver



The MSM FastRPC driver implements an IPC (Inter-Processor Communication)

mechanism that allows for clients to transparently make remote method

invocations across DSP and APPS boundaries. This enables developers

to offload tasks to the DSP and free up the application processor for

other tasks.



Required properties:

- compatible :	Must be one of "qcom,msm-fastrpc-adsp" or

		"qcom,msm-fastrpc-compute"



Optional properties:

- qcom,rpc-latency-us:	FastRPC QoS latency vote

- qcom,adsp-remoteheap-vmid:  FastRPC remote heap VMID list



Optional subnodes:

- qcom,msm_fastrpc_compute_cb :	Child nodes representing the compute context

				banks

- qcom,msm-fastrpc-rpmsg      :	Child node for rpmsg instead of glink for IPC



Subnode Required properties:

- compatible :		Must be "qcom,msm-fastrpc-compute-cb"

- label:		Label describing the channel this context bank belongs to

- iommus : 		A list of phandle and IOMMU specifier pairs that describe the

			IOMMU master interfaces of the device



Example:

	qcom,msm_fastrpc {

		compatible = "qcom,msm-fastrpc-compute";

		qcom,fastrpc-rpmsg;

		qcom,rpc-latency-us = <2343>;

		qcom,adsp-remoteheap-vmid = <22 37>;



		qcom,msm_fastrpc_rpmsg {

			compatible = "qcom,msm-fastrpc-rpmsg";

			qcom,glink-channels = "fastrpcglink-apps-dsp";

			intents = <0x64 64>;

		};



		qcom,msm_fastrpc_compute_cb_1 {

			compatible = "qcom,msm-fastrpc-compute-cb";

			label = "adsprpc-smd";

			iommus = <&apps_smmu 0x1401 0x0>,

		};

		qcom,msm_fastrpc_compute_cb_2 {

			compatible = "qcom,msm-fastrpc-compute-cb";

			label = "adsprpc-smd";

			iommus = <&apps_smmu 0x1402 0x0>,

		};

	};



Legacy SMMU v1/v2:



Required properties:

- compatible : Must be "qcom,msm-fastprc-legacy-compute-cb"



Required subnode:

- qcom,msm_fastrpc_compute_cb : Child nodes representing the compute context

                                banks



Required subnode properties:

- qcom,adsp-shared-phandle: phandle that describe the context bank handle

- qcom,adsp-shared-sids : A list of SID associated with the context bank

- qcom,virtual-addr-pool : Virtual address range that the context bank

                           will be using



Example:

        qcom,adsprpc_domains {

                compatible = "qcom,msm-fastrpc-legacy-compute-cb";

                qcom,msm_fastrpc_compute_cb {

                       qcom,adsp-shared-phandle = <&adsp_shared>;

                       qcom,adsp-shared-sids = <0x8 0x9>;

                       qcom,virtual-addr-pool = <0x80000000 0x7FFFFFFF>;

                };

        };



Remote Heap:



Required properties:

- compatible : Must be "qcom,msm-adsprpc-mem-region"

- memory-region : CMA region which is owned by this device



Example:

       qcom,adsprpc-mem {

               compatible = "qcom,msm-adsprpc-mem-region";

               memory-region = <&adsp_mem>;

       };

arch/arm64/configs/sdm855-perf_defconfig

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@@ -266,6 +266,7 @@ CONFIG_INPUT_UINPUT=y 
CONFIG_SERIAL_MSM_GENI=y

CONFIG_HW_RANDOM=y

CONFIG_DIAG_CHAR=y

CONFIG_MSM_ADSPRPC=y

CONFIG_I2C_CHARDEV=y

CONFIG_I2C_QCOM_GENI=y

CONFIG_SPI=y

arch/arm64/configs/sdm855_defconfig

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@@ -275,6 +275,7 @@ CONFIG_SERIAL_DEV_BUS=y 
CONFIG_TTY_PRINTK=y

CONFIG_HW_RANDOM=y

CONFIG_DIAG_CHAR=y

CONFIG_MSM_ADSPRPC=y

CONFIG_I2C_CHARDEV=y

CONFIG_I2C_QCOM_GENI=y

CONFIG_SPI=y

drivers/char/Kconfig

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@@ -589,5 +589,14 @@ config TILE_SROM 
source "drivers/char/xillybus/Kconfig"

source "drivers/char/diag/Kconfig"



config MSM_ADSPRPC

        tristate "QTI ADSP RPC driver"

        depends on QCOM_GLINK

        help

          Provides a communication mechanism that allows for clients to

          make remote method invocations across processor boundary to

          applications DSP processor. Say M if you want to enable this

          module.



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