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From: Rob Herring <robh@kernel.org>
To: Sibi Sankar <sibis@codeaurora.org>
Cc: bjorn.andersson@linaro.org, srinivas.kandagatla@linaro.org,
	tsoni@codeaurora.org, agross@kernel.org, mark.rutland@arm.com,
	linux-arm-msm@vger.kernel.org, linux-remoteproc@vger.kernel.org,
	linux-kernel@vger.kernel.org, devicetree@vger.kernel.org
Subject: Re: [PATCH v3 2/3] dt-bindings: soc: qcom: apr: Add protection domain bindings
Date: Fri, 31 Jan 2020 08:34:36 -0600
Message-ID: <20200131143436.GA14822@bogus> (raw)
In-Reply-To: <20191230050008.8143-3-sibis@codeaurora.org>

On Mon, Dec 30, 2019 at 10:30:07AM +0530, Sibi Sankar wrote:
> Add optional "qcom,protection-domain" bindings for APR services. This
> helps to capture the dependencies between APR services and the PD on
> which each apr service run.

This is meaningless to me...

> Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
> Reviewed-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
> Signed-off-by: Sibi Sankar <sibis@codeaurora.org>
> ---
>  .../devicetree/bindings/soc/qcom/qcom,apr.txt | 59 +++++++++++++++++++
>  1 file changed, 59 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/soc/qcom/qcom,apr.txt b/Documentation/devicetree/bindings/soc/qcom/qcom,apr.txt
> index db501269f47b8..f87c0b2a48de4 100644
> --- a/Documentation/devicetree/bindings/soc/qcom/qcom,apr.txt
> +++ b/Documentation/devicetree/bindings/soc/qcom/qcom,apr.txt
> @@ -45,6 +45,12 @@ by the individual bindings for the specific service
>  			12 - Ultrasound stream manager.
>  			13 - Listen stream manager.
>  
> +- qcom,protection-domain
> +	Usage: optional
> +	Value type: <stringlist>
> +	Definition: Must list the protection domain service name and path
> +		    that the particular apr service has a dependency on.

How many strings can there be and can you enumerate the possible 
strings?

> +
>  = EXAMPLE
>  The following example represents a QDSP based sound card on a MSM8996 device
>  which uses apr as communication between Apps and QDSP.
> @@ -82,3 +88,56 @@ which uses apr as communication between Apps and QDSP.
>  			...
>  		};
>  	};
> +
> += EXAMPLE 2
> +The following example represents a QDSP based sound card on SDM845 device.
> +Here the apr services are dependent on "avs/audio" service running on AUDIO
> +Protection Domain hosted on ADSP remote processor.
> +
> +	apr {
> +		compatible = "qcom,apr-v2";
> +		qcom,glink-channels = "apr_audio_svc";
> +		qcom,apr-domain = <APR_DOMAIN_ADSP>;
> +
> +		q6core {
> +			compatible = "qcom,q6core";
> +			reg = <APR_SVC_ADSP_CORE>;
> +			qcom,protection-domain = "avs/audio", "msm/adsp/audio_pd";
> +		};
> +
> +		q6afe: q6afe {
> +			compatible = "qcom,q6afe";
> +			reg = <APR_SVC_AFE>;
> +			qcom,protection-domain = "avs/audio", "msm/adsp/audio_pd";
> +			q6afedai: dais {
> +				compatible = "qcom,q6afe-dais";
> +				#sound-dai-cells = <1>;
> +
> +				qi2s@22 {
> +					reg = <22>;
> +					qcom,sd-lines = <3>;
> +				};
> +			};
> +		};
> +
> +		q6asm: q6asm {
> +			compatible = "qcom,q6asm";
> +			reg = <APR_SVC_ASM>;
> +			qcom,protection-domain = "avs/audio", "msm/adsp/audio_pd";
> +			q6asmdai: dais {
> +				compatible = "qcom,q6asm-dais";
> +				#sound-dai-cells = <1>;
> +				iommus = <&apps_smmu 0x1821 0x0>;
> +			};
> +		};
> +
> +		q6adm: q6adm {
> +			compatible = "qcom,q6adm";
> +			reg = <APR_SVC_ADM>;
> +			qcom,protection-domain = "avs/audio", "msm/adsp/audio_pd";

Perhaps an example where not everything is the same. The example shows 
me this isn't needed in DT.

> +			q6routing: routing {
> +				compatible = "qcom,q6adm-routing";
> +				#sound-dai-cells = <0>;
> +			};
> +		};
> +	};
> -- 
> The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
> a Linux Foundation Collaborative Project
> 

  reply index

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-12-30  5:00 [PATCH v3 0/3] Introduce Protection Domain Restart (PDR) Helpers Sibi Sankar
2019-12-30  5:00 ` [PATCH v3 1/3] soc: qcom: Introduce Protection Domain Restart helpers Sibi Sankar
2020-01-02 20:45   ` Bjorn Andersson
2020-01-03 12:36     ` Sibi Sankar
2019-12-30  5:00 ` [PATCH v3 2/3] dt-bindings: soc: qcom: apr: Add protection domain bindings Sibi Sankar
2020-01-31 14:34   ` Rob Herring [this message]
2020-02-01 13:44     ` Sibi Sankar
2019-12-30  5:00 ` [PATCH v3 3/3] soc: qcom: apr: Add avs/audio tracking functionality Sibi Sankar
2020-01-02 20:57   ` Bjorn Andersson
2020-01-03 12:47     ` Sibi Sankar

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