On Tue 01 May 05:07 PDT 2018, Srinivas Kandagatla wrote:
> This patch add dt bindings for Qualcomm APR (Asynchronous Packet Router)
> bus driver. This bus is used for communicating with DSP which provides
> audio and various other services to cpu.
>
> Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@xxxxxxxxxx>
> Reviewed-by: Rob Herring <robh@xxxxxxxxxx>
Reviewed-by: Bjorn Andersson <bjorn.andersson@xxxxxxxxxx>
Regards,
Bjorn
> ---
> .../devicetree/bindings/soc/qcom/qcom,apr.txt | 84 ++++++++++++++++++++++
> include/dt-bindings/soc/qcom,apr.h | 28 ++++++++
> 2 files changed, 112 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/soc/qcom/qcom,apr.txt
> create mode 100644 include/dt-bindings/soc/qcom,apr.h
>
> diff --git a/Documentation/devicetree/bindings/soc/qcom/qcom,apr.txt b/Documentation/devicetree/bindings/soc/qcom/qcom,apr.txt
> new file mode 100644
> index 000000000000..bcc612cc7423
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/soc/qcom/qcom,apr.txt
> @@ -0,0 +1,84 @@
> +Qualcomm APR (Asynchronous Packet Router) binding
> +
> +This binding describes the Qualcomm APR. APR is a IPC protocol for
> +communication between Application processor and QDSP. APR is mainly
> +used for audio/voice services on the QDSP.
> +
> +- compatible:
> + Usage: required
> + Value type: <stringlist>
> + Definition: must be "qcom,apr-v<VERSION-NUMBER>", example "qcom,apr-v2"
> +
> +- reg
> + Usage: required
> + Value type: <u32>
> + Definition: Destination processor ID.
> + Possible values are :
> + 1 - APR simulator
> + 2 - PC
> + 3 - MODEM
> + 4 - ADSP
> + 5 - APPS
> + 6 - MODEM2
> + 7 - APPS2
> +
> += APR SERVICES
> +Each subnode of the APR node represents service tied to this apr. The name
> +of the nodes are not important. The properties of these nodes are defined
> +by the individual bindings for the specific service
> +- All APR services MUST contain the following property:
> +
> +- reg
> + Usage: required
> + Value type: <u32>
> + Definition: APR Service ID
> + Possible values are :
> + 3 - DSP Core Service
> + 4 - Audio Front End Service.
> + 5 - Voice Stream Manager Service.
> + 6 - Voice processing manager.
> + 7 - Audio Stream Manager Service.
> + 8 - Audio Device Manager Service.
> + 9 - Multimode voice manager.
> + 10 - Core voice stream.
> + 11 - Core voice processor.
> + 12 - Ultrasound stream manager.
> + 13 - Listen stream manager.
> +
> += EXAMPLE
> +The following example represents a QDSP based sound card on a MSM8996 device
> +which uses apr as communication between Apps and QDSP.
> +
> + apr@4 {
> + compatible = "qcom,apr-v2";
> + reg = <APR_DOMAIN_ADSP>;
> +
> + q6core@3 {
> + compatible = "qcom,q6core";
> + reg = <APR_SVC_ADSP_CORE>;
> + };
> +
> + q6afe@4 {
> + compatible = "qcom,q6afe";
> + reg = <APR_SVC_AFE>;
> +
> + dais {
> + #sound-dai-cells = <1>;
> + hdmi@1 {
> + reg = <1>;
> + };
> + };
> + };
> +
> + q6asm@7 {
> + compatible = "qcom,q6asm";
> + reg = <APR_SVC_ASM>;
> + ...
> + };
> +
> + q6adm@8 {
> + compatible = "qcom,q6adm";
> + reg = <APR_SVC_ADM>;
> + ...
> + };
> + };
> diff --git a/include/dt-bindings/soc/qcom,apr.h b/include/dt-bindings/soc/qcom,apr.h
> new file mode 100644
> index 000000000000..006362400c0f
> --- /dev/null
> +++ b/include/dt-bindings/soc/qcom,apr.h
> @@ -0,0 +1,28 @@
> +/* SPDX-License-Identifier: GPL-2.0 */
> +#ifndef __DT_BINDINGS_QCOM_APR_H
> +#define __DT_BINDINGS_QCOM_APR_H
> +
> +/* Domain IDs */
> +#define APR_DOMAIN_SIM 0x1
> +#define APR_DOMAIN_PC 0x2
> +#define APR_DOMAIN_MODEM 0x3
> +#define APR_DOMAIN_ADSP 0x4
> +#define APR_DOMAIN_APPS 0x5
> +#define APR_DOMAIN_MAX 0x6
> +
> +/* ADSP service IDs */
> +#define APR_SVC_ADSP_CORE 0x3
> +#define APR_SVC_AFE 0x4
> +#define APR_SVC_VSM 0x5
> +#define APR_SVC_VPM 0x6
> +#define APR_SVC_ASM 0x7
> +#define APR_SVC_ADM 0x8
> +#define APR_SVC_ADSP_MVM 0x09
> +#define APR_SVC_ADSP_CVS 0x0A
> +#define APR_SVC_ADSP_CVP 0x0B
> +#define APR_SVC_USM 0x0C
> +#define APR_SVC_LSM 0x0D
> +#define APR_SVC_VIDC 0x16
> +#define APR_SVC_MAX 0x17
> +
> +#endif /* __DT_BINDINGS_QCOM_APR_H */
> --
> 2.16.2
>
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