linux-kernel - Re: [PATCH 1/3] dt-bindings: clock: Add Qualcomm SM6115 LPASS clock controller

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Date:   Sat, 26 Aug 2023 11:46:13 +0200
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Konrad Dybcio <konrad.dybcio@...aro.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Andy Gross <agross@...nel.org>,
        Michael Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
Cc:     Marijn Suijten <marijn.suijten@...ainline.org>,
        linux-arm-msm@...r.kernel.org, linux-clk@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/3] dt-bindings: clock: Add Qualcomm SM6115 LPASS clock
 controller

On 26/08/2023 11:39, Konrad Dybcio wrote:
> On 26.08.2023 11:28, Krzysztof Kozlowski wrote:
>> On 25/08/2023 20:13, Konrad Dybcio wrote:
>>> SM6115 (and its derivatives or similar SoCs) have a LPASS clock
>>> controller block which provides audio-related resets.
>>>
>>> Add bindings for it.
>>>
>>> Signed-off-by: Konrad Dybcio <konrad.dybcio@...aro.org>
>>> ---
>>>  .../bindings/clock/qcom,sm6115-lpasscc.yaml        | 53 ++++++++++++++++++++++
>>>  include/dt-bindings/clock/qcom,sm6115-lpasscc.h    | 15 ++++++
>>>  2 files changed, 68 insertions(+)
>>>
>>> diff --git a/Documentation/devicetree/bindings/clock/qcom,sm6115-lpasscc.yaml b/Documentation/devicetree/bindings/clock/qcom,sm6115-lpasscc.yaml
>>> new file mode 100644
>>> index 000000000000..58ee84aed073
>>> --- /dev/null
>>> +++ b/Documentation/devicetree/bindings/clock/qcom,sm6115-lpasscc.yaml
>>> @@ -0,0 +1,53 @@
>>> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
>>> +%YAML 1.2
>>> +---
>>> +$id: http://devicetree.org/schemas/clock/qcom,sm6115-lpasscc.yaml#
>>> +$schema: http://devicetree.org/meta-schemas/core.yaml#
>>> +
>>> +title: Qualcomm LPASS Core & Audio Clock Controller on SM6115
>>
>> Everything here looks the same as sc8280xp, so this could be just added
>> there as enum. The overall LPASS block version is different, but the
>> resets/clock controller look similar, doesn't it?
> I think the 6115 cc block is a bit different, 8280 has more swr
> hosts. Maybe Srini would know more.

Indeed, looking at downstream DTS this is closer to SM8250 and SM8350
than SC8280xp, with some interesting differences. But if you bring it
up, you also might fix SM8350, to which I looked a bit but then gave up.

Anyway, with the example staying or removed:

Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>

Best regards,
Krzysztof