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Date: Fri, 26 Nov 2021 10:24:10 +0530
From: jeyr@...eaurora.org
To: Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
Cc: linux-arm-msm@...r.kernel.org, gregkh@...uxfoundation.org,
linux-kernel@...r.kernel.org, fastrpc.upstream@....qualcomm.com
Subject: Re: [PATCH 1/5] dt-bindings: misc: convert fastrpc bindings to yaml
and add property
On 2021-11-25 20:11, Srinivas Kandagatla wrote:
> Hi Jeya,
>
> You should retain the original patch ownership while sending the
> patches.
Sure Srini, will add new property as dependent to yaml conversion patch.
>
> On 25/11/2021 14:15, Jeya R wrote:
>> Convert Qualcomm FastRPC bindings to yaml format and add a property
>> to set dsp domain as non-secure.
>>
>> Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
>> Signed-off-by: Jeya R <jeyr@...eaurora.org>
>> ---
>> .../devicetree/bindings/misc/qcom,fastrpc.txt | 78
>> -----------------
>> .../devicetree/bindings/misc/qcom,fastrpc.yaml | 97
>> ++++++++++++++++++++++
>> 2 files changed, 97 insertions(+), 78 deletions(-)
>> delete mode 100644
>> Documentation/devicetree/bindings/misc/qcom,fastrpc.txt
>> create mode 100644
>> Documentation/devicetree/bindings/misc/qcom,fastrpc.yaml
>>
>> diff --git a/Documentation/devicetree/bindings/misc/qcom,fastrpc.txt
>> b/Documentation/devicetree/bindings/misc/qcom,fastrpc.txt
>> deleted file mode 100644
>> index 2a1827a..0000000
>> --- a/Documentation/devicetree/bindings/misc/qcom,fastrpc.txt
>> +++ /dev/null
>> @@ -1,78 +0,0 @@
>> -Qualcomm Technologies, Inc. FastRPC Driver
>> -
>> -The FastRPC 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.
>> -
>> -- compatible:
>> - Usage: required
>> - Value type: <stringlist>
>> - Definition: must be "qcom,fastrpc"
>> -
>> -- label
>> - Usage: required
>> - Value type: <string>
>> - Definition: should specify the dsp domain name this fastrpc
>> - corresponds to. must be one of this: "adsp", "mdsp", "sdsp", "cdsp"
>> -
>> -- #address-cells
>> - Usage: required
>> - Value type: <u32>
>> - Definition: Must be 1
>> -
>> -- #size-cells
>> - Usage: required
>> - Value type: <u32>
>> - Definition: Must be 0
>> -
>> -= COMPUTE BANKS
>> -Each subnode of the Fastrpc represents compute context banks
>> available
>> -on the dsp.
>> -- All Compute context banks MUST contain the following properties:
>> -
>> -- compatible:
>> - Usage: required
>> - Value type: <stringlist>
>> - Definition: must be "qcom,fastrpc-compute-cb"
>> -
>> -- reg
>> - Usage: required
>> - Value type: <u32>
>> - Definition: Context Bank ID.
>> -
>> -- qcom,nsessions:
>> - Usage: Optional
>> - Value type: <u32>
>> - Defination: A value indicating how many sessions can share this
>> - context bank. Defaults to 1 when this property
>> - is not specified.
>> -
>> -Example:
>> -
>> -adsp-pil {
>> - compatible = "qcom,msm8996-adsp-pil";
>> - ...
>> - smd-edge {
>> - label = "lpass";
>> - fastrpc {
>> - compatible = "qcom,fastrpc";
>> - qcom,smd-channels = "fastrpcsmd-apps-dsp";
>> - label = "adsp";
>> - #address-cells = <1>;
>> - #size-cells = <0>;
>> -
>> - cb@1 {
>> - compatible = "qcom,fastrpc-compute-cb";
>> - reg = <1>;
>> - };
>> -
>> - cb@2 {
>> - compatible = "qcom,fastrpc-compute-cb";
>> - reg = <2>;
>> - };
>> - ...
>> - };
>> - };
>> -};
>> diff --git a/Documentation/devicetree/bindings/misc/qcom,fastrpc.yaml
>> b/Documentation/devicetree/bindings/misc/qcom,fastrpc.yaml
>> new file mode 100644
>> index 0000000..c3fe39b2
>> --- /dev/null
>> +++ b/Documentation/devicetree/bindings/misc/qcom,fastrpc.yaml
>> @@ -0,0 +1,97 @@
>> +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
>> +%YAML 1.2
>> +---
>> +$id: "http://devicetree.org/schemas/misc/qcom,fastrpc.yaml#"
>> +$schema: "http://devicetree.org/meta-schemas/core.yaml#"
>> +
>> +title: Qualcomm Technologies, Inc. FastRPC Driver
>> +
>> +maintainers:
>> + - Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
>> +
>> +description: |
>> + This binding describes Qualcomm FastRPC 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.
>> +
>> +properties:
>> + compatible:
>> + const: qcom,fastrpc
>> +
>> + label:
>> + enum:
>> + - adsp
>> + - mdsp
>> + - sdsp
>> + - cdsp
>> +
>> + qcom,non-secure-domain: true
>> + # Specify that dsp domain is non-secure.
>> +
>
> This change was not there in the original patch that I shared, you
> should add this change in a separate patch, as first patch converts to
> yaml and next one adds new bindings.
>
> This is also not following yaml style bindings.
> Please take some time to look at
> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/Documentation/devicetree/bindings/example-schema.yaml?h=v5.16-rc2
> to add new binding.
>
>
>
> --srini
This will be corrected as a new patch. Thanks.
>
>> + "#address-cells":
>> + const: 1
>> +
>> + "#size-cells":
>> + const: 0
>> +
>> +patternProperties:
>> + "^cb@[0-9a-f]$":
>> + type: object
>> + description: |
>> + Compute context bank
>> +
>> + properties:
>> + compatible:
>> + const: qcom,fastrpc-compute-cb
>> +
>> + reg:
>> + maxItems: 1
>> + description: Context Bank ID
>> +
>> + qcom,nsessions:
>> + $ref: /schemas/types.yaml#/definitions/uint32
>> + description: How many sessions can share this context bank.
>> + Defaults to 1 when this property is not
>> specified.
>> +
>> + required:
>> + - compatible
>> + - reg
>> +
>> + additionalProperties: false
>> +
>> +required:
>> + - compatible
>> + - label
>> +
>> +additionalProperties: false
>> +
>> +examples:
>> + - |
>> + adsp-pil {
>> + compatible = "qqcom,msm8996-adsp-pil";
>> +
>> + smd-edge {
>> + label = "lpass";
>> +
>> + fastrpc {
>> + compatible = "qcom,fastrpc";
>> + label = "adsp";
>> + #address-cells = <1>;
>> + #size-cells = <0>;
>> +
>> + cb@1 {
>> + compatible = "qcom,fastrpc-compute-cb";
>> + reg = <1>;
>> + };
>> +
>> + cb@2 {
>> + compatible = "qcom,fastrpc-compute-cb";
>> + reg = <2>;
>> + };
>> + };
>> + };
>> + };
>> +
>> +
>>
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