linux-kernel - Re: [PATCH v8 1/7] dt-bindings: remoteproc: qcom: Add SC7280 ADSP support

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Date:   Tue, 27 Sep 2022 18:47:31 +0530
From:   Srinivasa Rao Mandadapu <quic_srivasam@...cinc.com>
To:     Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
        <linux-remoteproc@...r.kernel.org>, <agross@...nel.org>,
        <andersson@...nel.org>, <lgirdwood@...il.com>,
        <broonie@...nel.org>, <robh+dt@...nel.org>,
        <quic_plai@...cinc.com>, <bgoswami@...cinc.com>, <perex@...ex.cz>,
        <tiwai@...e.com>, <srinivas.kandagatla@...aro.org>,
        <quic_rohkumar@...cinc.com>, <linux-arm-msm@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <swboyd@...omium.org>,
        <judyhsiao@...omium.org>, <devicetree@...r.kernel.org>
Subject: Re: [PATCH v8 1/7] dt-bindings: remoteproc: qcom: Add SC7280 ADSP
 support


On 9/23/2022 10:53 PM, Krzysztof Kozlowski wrote:
Thanks for Your time Krzyszto!!!
> On 23/09/2022 15:05, Srinivasa Rao Mandadapu wrote:
>> Add ADSP PIL loading support for SC7280 SoCs.
>>
>> Signed-off-by: Srinivasa Rao Mandadapu <quic_srivasam@...cinc.com>
>> Reviewed-by: Rob Herring <robh@...nel.org>
>> Reviewed-by: Stephen Boyd <swboyd@...omium.org>
>> ---
>> Changes since V7:
>> 	-- Remove redundant clocks in dt bindings.
>> 	-- Fix dt compilation error in dt bindings.
>> Changes since V6:
>> 	-- Update glink-edge property.
>> 	-- Add qcom,qmp property.
>> Changes since V5:
>> 	-- Remove qcom,adsp-memory-regions property.
>> Changes since V4:
>> 	-- Update halt registers description in dt bindings.
>>
>>   .../bindings/remoteproc/qcom,sc7280-adsp-pil.yaml  | 207 +++++++++++++++++++++
>>   1 file changed, 207 insertions(+)
>>   create mode 100644 Documentation/devicetree/bindings/remoteproc/qcom,sc7280-adsp-pil.yaml
>>
>> diff --git a/Documentation/devicetree/bindings/remoteproc/qcom,sc7280-adsp-pil.yaml b/Documentation/devicetree/bindings/remoteproc/qcom,sc7280-adsp-pil.yaml
>> new file mode 100644
>> index 0000000..79ef3c0
>> --- /dev/null
>> +++ b/Documentation/devicetree/bindings/remoteproc/qcom,sc7280-adsp-pil.yaml
>> @@ -0,0 +1,207 @@
>> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
>> +%YAML 1.2
>> +---
>> +$id: http://devicetree.org/schemas/remoteproc/qcom,sc7280-adsp-pil.yaml#
>> +$schema: http://devicetree.org/meta-schemas/core.yaml#
>> +
>> +title: Qualcomm SC7280 ADSP Peripheral Image Loader
>> +
>> +maintainers:
>> +  - Srinivasa Rao Mandadapu <quic_srivasam@...cinc.com>
>> +
>> +description:
>> +  This document describes the hardware for a component that loads and boots firmware
>> +  on the Qualcomm Technology Inc. ADSP.
>> +
>> +properties:
>> +  compatible:
>> +    enum:
>> +      - qcom,sc7280-adsp-pil
>> +
>> +  reg:
>> +    minItems: 1
>> +    items:
>> +      - description: qdsp6ss register
>> +      - description: efuse q6ss register
> Why second IO address space is optional?
Yeah, both are required for SC7280. will remove minItems.
>
>> +
>> +  interrupts:
>> +    items:
>> +      - description: Watchdog interrupt
>> +      - description: Fatal interrupt
>> +      - description: Ready interrupt
>> +      - description: Handover interrupt
>> +      - description: Stop acknowledge interrupt
>> +      - description: Shutdown acknowledge interrupt
>> +
>> +  interrupt-names:
>> +    items:
>> +      - const: wdog
>> +      - const: fatal
>> +      - const: ready
>> +      - const: handover
>> +      - const: stop-ack
>> +      - const: shutdown-ack
>> +
>> +  clocks:
>> +    items:
>> +      - description: XO clock
>> +      - description: GCC CFG NOC LPASS clock
>> +
>> +  clock-names:
>> +    items:
>> +      - const: xo
>> +      - const: gcc_cfg_noc_lpass
>> +
>> +  power-domains:
>> +    items:
>> +      - description: LCX power domain
>> +
>> +  resets:
>> +    items:
>> +      - description: PDC AUDIO SYNC RESET
>> +      - description: CC LPASS restart
>> +
>> +  reset-names:
>> +    items:
>> +      - const: pdc_sync
>> +      - const: cc_lpass
>> +
>> +  memory-region:
>> +    maxItems: 1
>> +    description: Reference to the reserved-memory for the Hexagon core
>> +
>> +  qcom,halt-regs:
>> +    $ref: /schemas/types.yaml#/definitions/phandle-array
>> +    description:
>> +      Phandle reference to a syscon representing TCSR followed by the
>> +      four offsets within syscon for q6, CE, AXI and qv6 halt registers.
>> +    items:
>> +      items:
> This has to be strictly defined, IOW, the second items must be already
> an item of previous list. Look at the other mss-pil.
Okay. Will modify as per mss-pil.
>
>> +        - description: phandle to TCSR MUTEX
>> +        - description: offset to q6 halt registers
>> +        - description: offset to CE halt registers
>> +        - description: offset to AXI halt registers
>> +        - description: offset to qv6 halt registers
>> +
>> +  qcom,smem-states:
>> +    $ref: /schemas/types.yaml#/definitions/phandle-array
>> +    description: States used by the AP to signal the Hexagon core
>> +    items:
>> +      - description: Stop the modem
>> +
>> +  qcom,smem-state-names:
>> +    description: The names of the state bits used for SMP2P output
>> +    const: stop
>> +
>> +  qcom,qmp:
>> +    $ref: /schemas/types.yaml#/definitions/phandle
>> +    description: Reference to the AOSS side-channel message RAM.
>> +
>> +  glink-edge:
>> +    type: object
> Missing ref to glink-edge and unevaluatedProperties:false. Please take a
> look at recent
> Documentation/devicetree/bindings/remoteproc/qcom,sc7180-mss-pil.yaml
Okay. Will add reference to glink-edge.
>
>> +    description: |
>> +      Qualcomm G-Link subnode which represents communication edge, channels
>> +      and devices related to the ADSP.
>> +
>> +    properties:
>> +      interrupts:
>> +        items:
>> +          - description: IRQ from ADSP to GLINK
> Skip interrupts and mboxes - both are coming from glink-edge.
Okay. Will remove it. But Same is followed in mss-pil
>
>> +
>> +      mboxes:
>> +        items:
>> +          - description: Mailbox for communication between APPS and ADSP
>> +
>> +      label:
>> +        description: The names of the state bits used for SMP2P output
> Skip description
Okay.
>
>> +        items:
>> +          - const: lpass
> No items, just const: lpass
Okay.
>
>> +
>> +      qcom,remote-pid:
>> +        $ref: /schemas/types.yaml#/definitions/uint32
>> +        description: ID of the shared memory used by GLINK for communication with ADSP
> This can be dropped.
Okay. Will remove qcom,remote-pid.
>
>> +
>> +      gpr: true
>> +      apr: false
>> +      fastrpc: false
>
> BTW, all these three do not make sense without ref to glink-edge. After
> adding ref, these seem reasonable.
Okay. will add glink-edge reference.
>
>> +
>> +    required:
>> +      - interrupts
>> +      - mboxes
>> +      - label
>> +      - qcom,remote-pid
>> +
>> +required:
>> +  - compatible
>> +  - reg
>> +  - interrupts
>> +  - interrupt-names
>> +  - clocks
>> +  - clock-names
>> +  - power-domains
>> +  - resets
>> +  - reset-names
>> +  - qcom,halt-regs
>> +  - memory-region
>> +  - qcom,smem-states
>> +  - qcom,smem-state-names
>> +  - qcom,qmp
>> +
>> +additionalProperties: false
> Best regards,
> Krzysztof
>