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Date: Tue, 8 Nov 2022 10:05:25 +0100
From: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To: Srinivasa Rao Mandadapu <quic_srivasam@...cinc.com>,
vkoul@...nel.org, agross@...nel.org, andersson@...nel.org,
robh+dt@...nel.org, broonie@...nel.org,
krzysztof.kozlowski+dt@...aro.org, linux-arm-msm@...r.kernel.org,
devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
quic_rohkumar@...cinc.com, srinivas.kandagatla@...aro.org,
dianders@...omium.org, swboyd@...omium.org, judyhsiao@...omium.org,
alsa-devel@...a-project.org, quic_rjendra@...cinc.com,
konrad.dybcio@...ainline.org, mka@...omium.org
Cc: Ratna Deepthi Kudaravalli <quic_rkudarav@...cinc.com>
Subject: Re: [PATCH v4 3/3] dt-bindings: soundwire: Convert text bindings to
DT Schema
On 08/11/2022 07:42, Srinivasa Rao Mandadapu wrote:
>
> On 11/7/2022 8:41 PM, Krzysztof Kozlowski wrote:
> Thanks for Your time Krzysztof!!!
>> On 07/11/2022 15:20, Srinivasa Rao Mandadapu wrote:
>>> Convert soundwire text bindings to DT Schema format.
>>>
>>> Update interrupt property items as per device tree,
>>> as it is not appropriately described in text file.
>>>
>>> Signed-off-by: Srinivasa Rao Mandadapu <quic_srivasam@...cinc.com>
>>> Co-developed-by: Ratna Deepthi Kudaravalli <quic_rkudarav@...cinc.com>
>>> Signed-off-by: Ratna Deepthi Kudaravalli <quic_rkudarav@...cinc.com>
>>> ---
>>> This patch depends on:
>>> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=42801e6185290d63691bd39cf8a3bba6cd5fe520
>> Hi,
>>
>> This is a bit surprising. You pointed to Linus' repo, so what does this
>> dependency mean? The Linus' repo is the mainline, there is nothing else,
>> so all its commits are already in every tree... unless this is an RC
>> fix? If so, you should rather say which RC is needed.
>
> Yeah. Will remove it. Actually in initial version, when used different
> repo, got bot errors.
>
> So to fix that, mentioned this dependency and continued the same in next
> versions.
>
>>
>>> Changes since V3:
>>> -- Remove subnode description and add appropriate pattern properties.
>>> -- Add interrput names in example.
>>> -- update some properties description.
>>> -- Revert minIteams change in previous version.
>>> -- Rebase to latest code base.
>>> Changes since V2:
>>> -- Update commit message.
>>> -- Add child node property.
>>> -- Change file name.
>>> -- Remove minIteams for few properties.
>>> -- Remove redundant required properties.
>>> -- Remove redundant description for wakeup-source property.
>>> -- Update interrupt property items.
>>> Changes since V1:
>>> -- Remove the status field in example.
>>> -- Remove interrupt-names property in the required list.
>>> -- Add the wakeup-source property.
>>>
>>> .../devicetree/bindings/soundwire/qcom,sdw.txt | 215 ------------------
>>> .../bindings/soundwire/qcom,soundwire.yaml | 241 +++++++++++++++++++++
>>> 2 files changed, 241 insertions(+), 215 deletions(-)
>>> delete mode 100644 Documentation/devicetree/bindings/soundwire/qcom,sdw.txt
>>> create mode 100644 Documentation/devicetree/bindings/soundwire/qcom,soundwire.yaml
>>>
>>> diff --git a/Documentation/devicetree/bindings/soundwire/qcom,sdw.txt b/Documentation/devicetree/bindings/soundwire/qcom,sdw.txt
>>> deleted file mode 100644
>>> index e0faed8..0000000
>>> --- a/Documentation/devicetree/bindings/soundwire/qcom,sdw.txt
>>> +++ /dev/null
>>> @@ -1,215 +0,0 @@
>>> -Qualcomm SoundWire Controller Bindings
>>> -
>>> -
>>> -This binding describes the Qualcomm SoundWire Controller along with its
>>> -board specific bus parameters.
>>> -
>>> -- compatible:
>>> - Usage: required
>>> - Value type: <stringlist>
>>> - Definition: must be "qcom,soundwire-v<MAJOR>.<MINOR>.<STEP>",
>>> - Example:
>>> - "qcom,soundwire-v1.3.0"
>>> - "qcom,soundwire-v1.5.0"
>>> - "qcom,soundwire-v1.5.1"
>>> - "qcom,soundwire-v1.6.0"
>>> - "qcom,soundwire-v1.7.0"
>>> -- reg:
>>> - Usage: required
>>> - Value type: <prop-encoded-array>
>>> - Definition: the base address and size of SoundWire controller
>>> - address space.
>>> -
>>> -- interrupts:
>>> - Usage: required
>>> - Value type: <prop-encoded-array>
>>> - Definition: should specify the SoundWire Controller core and optional
>>> - wake IRQ
>>> -
>>> -- interrupt-names:
>>> - Usage: Optional
>>> - Value type: boolean
>>> - Value type: <stringlist>
>>> - Definition: should be "core" for core and "wakeup" for wake interrupt.
>>> -
>>> -- wakeup-source:
>>> - Usage: Optional
>>> - Value type: boolean
>>> - Definition: should specify if SoundWire Controller is wake up capable.
>>> -
>>> -- clock-names:
>>> - Usage: required
>>> - Value type: <stringlist>
>>> - Definition: should be "iface" for SoundWire Controller interface clock
>>> -
>>> -- clocks:
>>> - Usage: required
>>> - Value type: <prop-encoded-array>
>>> - Definition: should specify the SoundWire Controller interface clock
>>> -
>>> -- #sound-dai-cells:
>>> - Usage: required
>>> - Value type: <u32>
>>> - Definition: must be 1 for digital audio interfaces on the controller.
>>> -
>>> -- qcom,dout-ports:
>>> - Usage: required
>>> - Value type: <u32>
>>> - Definition: must be count of data out ports
>>> -
>>> -- qcom,din-ports:
>>> - Usage: required
>>> - Value type: <u32>
>>> - Definition: must be count of data in ports
>>> -
>>> -- qcom,ports-offset1:
>>> - Usage: required
>>> - Value type: <prop-encoded-array>
>>> - Definition: should specify payload transport window offset1 of each
>>> - data port. Out ports followed by In ports.
>>> - Value of 0xFF indicates that this option is not implemented
>>> - or applicable for the respective data port.
>>> - More info in MIPI Alliance SoundWire 1.0 Specifications.
>>> -
>>> -- qcom,ports-offset2:
>>> - Usage: required
>>> - Value type: <prop-encoded-array>
>>> - Definition: should specify payload transport window offset2 of each
>>> - data port. Out ports followed by In ports.
>>> - Value of 0xFF indicates that this option is not implemented
>>> - or applicable for the respective data port.
>>> - More info in MIPI Alliance SoundWire 1.0 Specifications.
>>> -
>>> -- qcom,ports-sinterval-low:
>>> - Usage: required
>>> - Value type: <prop-encoded-array>
>>> - Definition: should be sample interval low of each data port.
>>> - Out ports followed by In ports. Used for Sample Interval
>>> - calculation.
>>> - Value of 0xFF indicates that this option is not implemented
>>> - or applicable for the respective data port.
>>> - More info in MIPI Alliance SoundWire 1.0 Specifications.
>>> -
>>> -- qcom,ports-word-length:
>>> - Usage: optional
>>> - Value type: <prop-encoded-array>
>>> - Definition: should be size of payload channel sample.
>>> - Value of 0xFF indicates that this option is not implemented
>>> - or applicable for the respective data port.
>>> - More info in MIPI Alliance SoundWire 1.0 Specifications.
>>> -
>>> -- qcom,ports-block-pack-mode:
>>> - Usage: optional
>>> - Value type: <prop-encoded-array>
>>> - Definition: should be 0 or 1 to indicate the block packing mode.
>>> - 0 to indicate Blocks are per Channel
>>> - 1 to indicate Blocks are per Port.
>>> - Out ports followed by In ports.
>>> - Value of 0xFF indicates that this option is not implemented
>>> - or applicable for the respective data port.
>>> - More info in MIPI Alliance SoundWire 1.0 Specifications.
>>> -
>>> -- qcom,ports-block-group-count:
>>> - Usage: optional
>>> - Value type: <prop-encoded-array>
>>> - Definition: should be in range 1 to 4 to indicate how many sample
>>> - intervals are combined into a payload.
>>> - Out ports followed by In ports.
>>> - Value of 0xFF indicates that this option is not implemented
>>> - or applicable for the respective data port.
>>> - More info in MIPI Alliance SoundWire 1.0 Specifications.
>>> -
>>> -- qcom,ports-lane-control:
>>> - Usage: optional
>>> - Value type: <prop-encoded-array>
>>> - Definition: should be in range 0 to 7 to identify which data lane
>>> - the data port uses.
>>> - Out ports followed by In ports.
>>> - Value of 0xFF indicates that this option is not implemented
>>> - or applicable for the respective data port.
>>> - More info in MIPI Alliance SoundWire 1.0 Specifications.
>>> -
>>> -- qcom,ports-hstart:
>>> - Usage: optional
>>> - Value type: <prop-encoded-array>
>>> - Definition: should be number identifying lowerst numbered coloum in
>>> - SoundWire Frame, i.e. left edge of the Transport sub-frame
>>> - for each port. Values between 0 and 15 are valid.
>>> - Out ports followed by In ports.
>>> - Value of 0xFF indicates that this option is not implemented
>>> - or applicable for the respective data port.
>>> - More info in MIPI Alliance SoundWire 1.0 Specifications.
>>> -
>>> -- qcom,ports-hstop:
>>> - Usage: optional
>>> - Value type: <prop-encoded-array>
>>> - Definition: should be number identifying highest numbered coloum in
>>> - SoundWire Frame, i.e. the right edge of the Transport
>>> - sub-frame for each port. Values between 0 and 15 are valid.
>>> - Out ports followed by In ports.
>>> - Value of 0xFF indicates that this option is not implemented
>>> - or applicable for the respective data port.
>>> - More info in MIPI Alliance SoundWire 1.0 Specifications.
>>> -
>>> -- qcom,dports-type:
>>> - Usage: optional
>>> - Value type: <prop-encoded-array>
>>> - Definition: should be one of the following types
>>> - 0 for reduced port
>>> - 1 for simple ports
>>> - 2 for full port
>>> - Out ports followed by In ports.
>>> - Value of 0xFF indicates that this option is not implemented
>>> - or applicable for the respective data port.
>>> - More info in MIPI Alliance SoundWire 1.0 Specifications.
>>> -
>>> -- reset:
>>> - Usage: optional
>>> - Value type: <prop-encoded-array>
>>> - Definition: Should specify the SoundWire audio CSR reset controller interface,
>>> - which is required for SoundWire version 1.6.0 and above.
>>> -
>>> -- reset-names:
>>> - Usage: optional
>>> - Value type: <stringlist>
>>> - Definition: should be "swr_audio_cgcr" for SoundWire audio CSR reset
>>> - controller interface.
>>> -
>>> -Note:
>>> - More Information on detail of encoding of these fields can be
>>> -found in MIPI Alliance SoundWire 1.0 Specifications.
>>> -
>>> -= SoundWire devices
>>> -Each subnode of the bus represents SoundWire device attached to it.
>>> -The properties of these nodes are defined by the individual bindings.
>>> -
>>> -= EXAMPLE
>>> -The following example represents a SoundWire controller on DB845c board
>>> -which has controller integrated inside WCD934x codec on SDM845 SoC.
>>> -
>>> -soundwire: soundwire@c85 {
>>> - compatible = "qcom,soundwire-v1.3.0";
>>> - reg = <0xc85 0x20>;
>>> - interrupts = <20 IRQ_TYPE_EDGE_RISING>;
>>> - clocks = <&wcc>;
>>> - clock-names = "iface";
>>> - resets = <&lpass_audiocc LPASS_AUDIO_SWR_TX_CGCR>;
>>> - reset-names = "swr_audio_cgcr";
>>> - #sound-dai-cells = <1>;
>>> - qcom,dports-type = <0>;
>>> - qcom,dout-ports = <6>;
>>> - qcom,din-ports = <2>;
>>> - qcom,ports-sinterval-low = /bits/ 8 <0x07 0x1F 0x3F 0x7 0x1F 0x3F 0x0F 0x0F>;
>>> - qcom,ports-offset1 = /bits/ 8 <0x01 0x02 0x0C 0x6 0x12 0x0D 0x07 0x0A >;
>>> - qcom,ports-offset2 = /bits/ 8 <0x00 0x00 0x1F 0x00 0x00 0x1F 0x00 0x00>;
>>> -
>>> - /* Left Speaker */
>>> - left{
>>> - ....
>>> - };
>>> -
>>> - /* Right Speaker */
>>> - right{
>>> - ....
>>> - };
>>> -};
>>> diff --git a/Documentation/devicetree/bindings/soundwire/qcom,soundwire.yaml b/Documentation/devicetree/bindings/soundwire/qcom,soundwire.yaml
>>> new file mode 100644
>>> index 0000000..b0590cb
>>> --- /dev/null
>>> +++ b/Documentation/devicetree/bindings/soundwire/qcom,soundwire.yaml
>>> @@ -0,0 +1,241 @@
>>> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
>>> +%YAML 1.2
>>> +---
>>> +$id: http://devicetree.org/schemas/soundwire/qcom,soundwire.yaml#
>>> +$schema: http://devicetree.org/meta-schemas/core.yaml#
>>> +
>>> +title: Qualcomm SoundWire Controller
>>> +
>>> +maintainers:
>>> + - Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
>>> + - Srinivasa Rao Mandadapu <quic_srivasam@...cinc.com>
>>> +
>>> +description:
>>> + The Qualcomm SoundWire controller along with its board specific bus parameters.
>>> +
>>> +properties:
>>> + compatible:
>>> + enum:
>>> + - qcom,soundwire-v1.3.0
>>> + - qcom,soundwire-v1.5.0
>>> + - qcom,soundwire-v1.5.1
>>> + - qcom,soundwire-v1.6.0
>>> + - qcom,soundwire-v1.7.0
>> Missing blank line.
> Okay. will add it.
>>> + reg:
>>> + maxItems: 1
>>> +
>>> + interrupts:
>>> + minItems: 1
>>> + items:
>>> + - description: specify the SoundWire controller core.
>>> + - description: specify the Soundwire controller wake IRQ.
>>> +
>>> + interrupt-names:
>>> + minItems: 1
>>> + items:
>>> + - const: core
>>> + - const: wakeup
>>> +
>>> + clocks:
>>> + items:
>>> + - description: iface clock
>>> +
>>> + clock-names:
>>> + items:
>>> + - const: iface
>>> +
>>> + resets:
>>> + items:
>>> + - description: SWR_AUDIO_CGCR RESET
>>> +
>>> + reset-names:
>>> + items:
>>> + - const: swr_audio_cgcr
>>> +
>>> + '#sound-dai-cells':
>>> + const: 1
>>> +
>>> + '#address-cells':
>>> + const: 2
>>> +
>>> + '#size-cells':
>>> + const: 0
>>> +
>>> + wakeup-source: true
>>> +
>>> + qcom,din-ports:
>>> + $ref: /schemas/types.yaml#/definitions/uint32
>>> + description: count of data in ports
>>> +
>>> + qcom,dout-ports:
>>> + $ref: /schemas/types.yaml#/definitions/uint32
>>> + description: count of data out ports
>>> +
>>> + qcom,ports-word-length:
>>> + $ref: /schemas/types.yaml#/definitions/uint8-array
>>> + description: Size of payload channel sample.
>>> + Value of 0xFF indicates that this option is not implemented
>>> + or applicable for the respective data port.
>>> + More info in MIPI Alliance SoundWire 1.0 Specifications.
>>> + minItems: 3
>>> + maxItems: 5
>>> +
>>> + qcom,ports-sinterval-low:
>>> + $ref: /schemas/types.yaml#/definitions/uint8-array
>>> + description: Sample interval low of each data port.
>>> + Out ports followed by In ports. Used for Sample Interval
>>> + calculation.
>>> + Value of 0xFF indicates that this option is not implemented
>>> + or applicable for the respective data port.
>>> + More info in MIPI Alliance SoundWire 1.0 Specifications.
>>> + minItems: 3
>>> + maxItems: 8
>>> +
>>> + qcom,ports-offset1:
>>> + $ref: /schemas/types.yaml#/definitions/uint8-array
>>> + description: Payload transport window offset1 of each
>>> + data port. Out ports followed by In ports.
>>> + Value of 0xFF indicates that this option is not implemented
>>> + or applicable for the respective data port.
>>> + More info in MIPI Alliance SoundWire 1.0 Specifications.
>>> + minItems: 3
>>> + maxItems: 8
>>> +
>>> + qcom,ports-offset2:
>>> + $ref: /schemas/types.yaml#/definitions/uint8-array
>>> + description: Payload transport window offset2 of each
>>> + data port. Out ports followed by In ports.
>>> + Value of 0xFF indicates that this option is not implemented
>>> + or applicable for the respective data port.
>>> + More info in MIPI Alliance SoundWire 1.0 Specifications.
>>> + minItems: 3
>>> + maxItems: 8
>>> +
>>> + qcom,ports-lane-control:
>>> + $ref: /schemas/types.yaml#/definitions/uint8-array
>>> + description: Identify which data lane the data port uses.
>>> + Out ports followed by In ports.
>>> + Value of 0xFF indicates that this option is not implemented
>>> + or applicable for the respective data port.
>>> + More info in MIPI Alliance SoundWire 1.0 Specifications.
>>> + minItems: 3
>>> + maxItems: 5
>>> +
>>> + qcom,ports-block-pack-mode:
>>> + $ref: /schemas/types.yaml#/definitions/uint8-array
>>> + description: Indicate the block packing mode.
>>> + 0 to indicate Blocks are per Channel
>>> + 1 to indicate Blocks are per Port.
>>> + Out ports followed by In ports.
>>> + Value of 0xFF indicates that this option is not implemented
>>> + or applicable for the respective data port.
>>> + More info in MIPI Alliance SoundWire 1.0 Specifications.
>>> + minItems: 3
>>> + maxItems: 8
>>> +
>>> + qcom,ports-hstart:
>>> + $ref: /schemas/types.yaml#/definitions/uint8-array
>>> + description: Identifying lowerst numbered coloum in
>>> + SoundWire Frame, i.e. left edge of the Transport sub-frame
>>> + for each port. Values between 0 and 15 are valid.
>>> + Out ports followed by In ports.
>>> + Value of 0xFF indicates that this option is not implemented
>>> + or applicable for the respective data port.
>>> + More info in MIPI Alliance SoundWire 1.0 Specifications.
>>> + minItems: 3
>>> + maxItems: 5
>>> +
>>> + qcom,ports-hstop:
>>> + $ref: /schemas/types.yaml#/definitions/uint8-array
>>> + description: Identifying highest numbered coloum in
>>> + SoundWire Frame, i.e. the right edge of the Transport
>>> + sub-frame for each port. Values between 0 and 15 are valid.
>>> + Out ports followed by In ports.
>>> + Value of 0xFF indicates that this option is not implemented
>>> + or applicable for the respective data port.
>>> + More info in MIPI Alliance SoundWire 1.0 Specifications.
>>> + minItems: 3
>>> + maxItems: 5
>>> +
>>> + qcom,ports-block-group-count:
>>> + $ref: /schemas/types.yaml#/definitions/uint8-array
>>> + description: In range 1 to 4 to indicate how many sample
>>> + intervals are combined into a payload.
>>> + Out ports followed by In ports.
>>> + Value of 0xFF indicates that this option is not implemented
>>> + or applicable for the respective data port.
>>> + More info in MIPI Alliance SoundWire 1.0 Specifications.
>>> + minItems: 3
>>> + maxItems: 5
>>> +
>>> + label:
>>> + maxItems: 1
>>> +
>>> +patternProperties:
>>> + "^.*@[0-9a-f],[0-9a-f]$":
>>> + type: object
>> You should have here a description.
>
> Bit confusion Here. In any of examples there is no description for
> patternProperties.
That's interesting, let's check:
$ git grep -C 4 patternProperties -- Documentation/devicetree/bindings/
First has description, second does not have, third has, 4th has, 5th
has, 6th has, 7th has, 8th has.
So from all first 8 entries, only one did not have. When the objects are
obvious or are a standard properties, the description could be skipped,
but in regular cases description is expected. Just like for every custom
property.
> You mean, description for below compatible property?
No, description on the level of type: object.
>
>>
>>> + properties:
>>> + compatible:
>>> + pattern: "^sdw[0-9a-f]{1}[0-9a-f]{4}[0-9a-f]{4}[0-9a-f]{2}$"
>>> +
>>> +required:
>>> + - compatible
>>> + - reg
>>> + - interrupts
>>> + - clocks
>>> + - clock-names
>>> + - '#sound-dai-cells'
>>> + - '#address-cells'
>>> + - '#size-cells'
>>> + - qcom,dout-ports
>>> + - qcom,din-ports
>>> + - qcom,ports-sinterval-low
>>> + - qcom,ports-offset1
>>> + - qcom,ports-offset2
>>> +
>>> +additionalProperties: false
>>> +
>>> +examples:
>>> + - |
>>> + #include <dt-bindings/interrupt-controller/arm-gic.h>
>>> + #include <dt-bindings/interrupt-controller/irq.h>
>>> + #include <dt-bindings/clock/qcom,lpassaudiocc-sc7280.h>
>>> +
>>> + soundwire@...0000 {
>>> + compatible = "qcom,soundwire-v1.6.0";
>>> + reg = <0x03210000 0x2000>;
>>> +
>>> + interrupts = <GIC_SPI 155 IRQ_TYPE_LEVEL_HIGH>,
>>> + <&pdc 130 IRQ_TYPE_LEVEL_HIGH>;
>>> +
>>> + interrupt-names = "core";
>> Does not look like you tested the bindings. Please run `make
>> dt_binding_check` (see
>> Documentation/devicetree/bindings/writing-schema.rst for instructions).
> Tested bindings and didn't see any issues on my setup. will do cross check.
You have two interrupts but only one name.
Best regards,
Krzysztof
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