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Message-ID: <3cda9005-d7a5-56f0-d1d2-fd6c1cb36fc3@linaro.org>
Date: Thu, 24 Nov 2022 12:13:30 +0100
From: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To: Sibi Sankar <quic_sibis@...cinc.com>, andersson@...nel.org
Cc: agross@...nel.org, linux-arm-msm@...r.kernel.org,
devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
krzysztof.kozlowski+dt@...aro.org, robh+dt@...nel.org,
konrad.dybcio@...ainline.org, robimarko@...il.com,
quic_gurus@...cinc.com, quic_rjendra@...cinc.com
Subject: Re: [PATCH V5 1/2] dt-bindings: firmware: qcom-scm: Add optional
interrupt
On 23/11/2022 21:46, Sibi Sankar wrote:
> From: Guru Das Srinagesh <quic_gurus@...cinc.com>
>
> Add an interrupt specification to the bindings to support the wait-queue
> feature.
Subject - this is qcom,scm, not qcom-scm.
>
> Signed-off-by: Guru Das Srinagesh <quic_gurus@...cinc.com>
> Signed-off-by: Sibi Sankar <quic_sibis@...cinc.com>
> Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
> ---
>
> v5:
> - Pick up R-b
>
> v4:
> - Qualify bindings [Krzysztoff]
>
> Documentation/devicetree/bindings/firmware/qcom,scm.yaml | 6 ++++++
> 1 file changed, 6 insertions(+)
>
> diff --git a/Documentation/devicetree/bindings/firmware/qcom,scm.yaml b/Documentation/devicetree/bindings/firmware/qcom,scm.yaml
> index 25688571ee7c..aea6e0c86a89 100644
> --- a/Documentation/devicetree/bindings/firmware/qcom,scm.yaml
> +++ b/Documentation/devicetree/bindings/firmware/qcom,scm.yaml
> @@ -73,6 +73,12 @@ properties:
> '#reset-cells':
> const: 1
>
> + interrupts:
> + description:
> + The wait-queue interrupt that firmware raises as part of handshake
> + protocol to handle sleeping SCM calls.
> + maxItems: 1
Which devices have interrupts?
We talked about it here:
https://lore.kernel.org/all/2464d90f-64e9-5e3c-404b-10394c3bc302@quicinc.com/
and here:
https://lore.kernel.org/all/c20edd0d-7613-5683-60e7-54317cac6e0b@linaro.org/
But I still don't get which devices support it and which do not.
BTW:
https://lore.kernel.org/all/20221122092345.44369-2-krzysztof.kozlowski@linaro.org/
Best regards,
Krzysztof
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