From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Sender: sibis=codeaurora.org@mg.codeaurora.org From: Sibi Sankar Subject: [PATCH v6 2/3] dt-bindings: soc: qcom: apr: Add protection domain bindings Date: Thu, 5 Mar 2020 01:39:10 +0530 Message-Id: <20200304200911.15415-3-sibis@codeaurora.org> In-Reply-To: <20200304200911.15415-1-sibis@codeaurora.org> References: <20200304200911.15415-1-sibis@codeaurora.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit To: bjorn.andersson@linaro.org, srinivas.kandagatla@linaro.org Cc: agross@kernel.org, robh+dt@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, tsoni@codeaurora.org, vnkgutta@codeaurora.org, Sibi Sankar , Rob Herring List-ID: Qualcomm SoCs (starting with MSM8998) allow for multiple protection domains (PDs) to run on the same Q6 sub-system. This allows for services like AVS AUDIO to have their own separate address space and crash/recover without disrupting the other PDs running on the same Q6 ADSP. Add "qcom,protection-domain" bindings to capture the dependencies between the APR service and the PD on which the apr service runs. Reviewed-by: Bjorn Andersson Reviewed-by: Rob Herring Signed-off-by: Sibi Sankar --- V6: * Picked up Rob's R-b V5: * Picked up Bjorn's R-b .../devicetree/bindings/soc/qcom/qcom,apr.txt | 50 +++++++++++++++++++ 1 file changed, 50 insertions(+) diff --git a/Documentation/devicetree/bindings/soc/qcom/qcom,apr.txt b/Documentation/devicetree/bindings/soc/qcom/qcom,apr.txt index db501269f47b8..f8fa71f5d84ba 100644 --- a/Documentation/devicetree/bindings/soc/qcom/qcom,apr.txt +++ b/Documentation/devicetree/bindings/soc/qcom/qcom,apr.txt @@ -45,6 +45,18 @@ by the individual bindings for the specific service 12 - Ultrasound stream manager. 13 - Listen stream manager. +- qcom,protection-domain + Usage: optional + Value type: + Definition: Must list the protection domain service name and path + that the particular apr service has a dependency on. + Possible values are : + "avs/audio", "msm/adsp/audio_pd". + "kernel/elf_loader", "msm/modem/wlan_pd". + "tms/servreg", "msm/adsp/audio_pd". + "tms/servreg", "msm/modem/wlan_pd". + "tms/servreg", "msm/slpi/sensor_pd". + = 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 +94,41 @@ which uses apr as communication between Apps and QDSP. ... }; }; + += EXAMPLE 2 +The following example represents a QDSP based sound card with protection domain +dependencies specified. Here some of the apr services are dependent on services +running on protection domain hosted on ADSP/SLPI remote processors while others +have no such dependency. + + apr { + compatible = "qcom,apr-v2"; + qcom,glink-channels = "apr_audio_svc"; + qcom,apr-domain = ; + + q6core { + compatible = "qcom,q6core"; + reg = ; + }; + + q6afe: q6afe { + compatible = "qcom,q6afe"; + reg = ; + qcom,protection-domain = "avs/audio", "msm/adsp/audio_pd"; + ... + }; + + q6asm: q6asm { + compatible = "qcom,q6asm"; + reg = ; + qcom,protection-domain = "tms/servreg", "msm/slpi/sensor_pd"; + ... + }; + + q6adm: q6adm { + compatible = "qcom,q6adm"; + reg = ; + qcom,protection-domain = "avs/audio", "msm/adsp/audio_pd"; + ... + }; + }; -- The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum, a Linux Foundation Collaborative Project