From: Konrad Dybcio <konrad.dybcio@linaro.org>
To: Nikunj Kela <quic_nkela@quicinc.com>,
Sudeep Holla <sudeep.holla@arm.com>
Cc: cristian.marussi@arm.com, robh+dt@kernel.org,
krzysztof.kozlowski+dt@linaro.org, conor+dt@kernel.org,
andersson@kernel.org, linux-arm-kernel@lists.infradead.org,
devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-arm-msm@vger.kernel.org
Subject: Re: [PATCH v5 1/2] dt-bindings: arm: Add new compatible for smc/hvc transport for SCMI
Date: Mon, 9 Oct 2023 23:03:45 +0200 [thread overview]
Message-ID: <0a039a5a-46c8-4f63-a9e4-fd5b197340ab@linaro.org> (raw)
In-Reply-To: <b1c9ad08-5aad-ccbd-247c-a5b2aaa42b5b@quicinc.com>
On 10/9/23 16:52, Nikunj Kela wrote:
>
> On 10/9/2023 7:41 AM, Sudeep Holla wrote:
>> On Fri, Oct 06, 2023 at 09:42:05AM -0700, Nikunj Kela wrote:
>>> Introduce compatible "qcom,scmi-smc" for SCMI smc/hvc transport
>>> channel for
>>> Qualcomm virtual platforms.
>>>
>>> This compatible mandates populating an additional parameter
>>> 'capability-id'
>>> from the last 8 bytes of the shmem channel.
>>>
>> While I am happy with the simplification here, I am also bit nervous how
>> long before Qualcomm abandons this. I hope this is adopted as is in all
>> internal and downstream code without any modifications and this is not
>> just a push for upstreaming some change to minimise delta with internal/
>> downstream code.
>>
>> --
>> Regards,
>> Sudeep
>
> Qualcomm is using patch on all the virtual auto platforms using
> shmem/doorbell as scmi channel. This is already being used without any
> modifications in our downstream code. No delta for this patch series.
> Thanks!
AFAICT Sudeep is looking for a solid guarantee that it will continue to
be used as-is, on more than one platform and on more than one BSP version.
There have been cases where such firmware interfaces had silent ABI
breaks (or were replaced altogether) between qc downstream branches and
this would be unacceptable. Understandably, having a unified means of
communication for *all* Qualcomm chips (i.e. not only auto) going
forward would likely be expected..
Konrad
WARNING: multiple messages have this Message-ID (diff)
From: Konrad Dybcio <konrad.dybcio@linaro.org>
To: Nikunj Kela <quic_nkela@quicinc.com>,
Sudeep Holla <sudeep.holla@arm.com>
Cc: cristian.marussi@arm.com, robh+dt@kernel.org,
krzysztof.kozlowski+dt@linaro.org, conor+dt@kernel.org,
andersson@kernel.org, linux-arm-kernel@lists.infradead.org,
devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-arm-msm@vger.kernel.org
Subject: Re: [PATCH v5 1/2] dt-bindings: arm: Add new compatible for smc/hvc transport for SCMI
Date: Mon, 9 Oct 2023 23:03:45 +0200 [thread overview]
Message-ID: <0a039a5a-46c8-4f63-a9e4-fd5b197340ab@linaro.org> (raw)
In-Reply-To: <b1c9ad08-5aad-ccbd-247c-a5b2aaa42b5b@quicinc.com>
On 10/9/23 16:52, Nikunj Kela wrote:
>
> On 10/9/2023 7:41 AM, Sudeep Holla wrote:
>> On Fri, Oct 06, 2023 at 09:42:05AM -0700, Nikunj Kela wrote:
>>> Introduce compatible "qcom,scmi-smc" for SCMI smc/hvc transport
>>> channel for
>>> Qualcomm virtual platforms.
>>>
>>> This compatible mandates populating an additional parameter
>>> 'capability-id'
>>> from the last 8 bytes of the shmem channel.
>>>
>> While I am happy with the simplification here, I am also bit nervous how
>> long before Qualcomm abandons this. I hope this is adopted as is in all
>> internal and downstream code without any modifications and this is not
>> just a push for upstreaming some change to minimise delta with internal/
>> downstream code.
>>
>> --
>> Regards,
>> Sudeep
>
> Qualcomm is using patch on all the virtual auto platforms using
> shmem/doorbell as scmi channel. This is already being used without any
> modifications in our downstream code. No delta for this patch series.
> Thanks!
AFAICT Sudeep is looking for a solid guarantee that it will continue to
be used as-is, on more than one platform and on more than one BSP version.
There have been cases where such firmware interfaces had silent ABI
breaks (or were replaced altogether) between qc downstream branches and
this would be unacceptable. Understandably, having a unified means of
communication for *all* Qualcomm chips (i.e. not only auto) going
forward would likely be expected..
Konrad
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next prev parent reply other threads:[~2023-10-09 21:04 UTC|newest]
Thread overview: 186+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-07-18 16:08 [PATCH 0/2] Add qcom hvc/shmem transport Nikunj Kela
2023-07-18 16:08 ` Nikunj Kela
2023-07-18 16:08 ` [PATCH 1/2] dt-bindings: arm: Add qcom specific hvc transport for SCMI Nikunj Kela
2023-07-18 16:08 ` Nikunj Kela
2023-07-18 17:21 ` Rob Herring
2023-07-18 17:21 ` Rob Herring
2023-07-18 18:12 ` Krzysztof Kozlowski
2023-07-18 18:12 ` Krzysztof Kozlowski
2023-07-18 18:18 ` Nikunj Kela
2023-07-18 18:18 ` Nikunj Kela
2023-07-19 10:39 ` Sudeep Holla
2023-07-19 10:39 ` Sudeep Holla
2023-07-19 13:58 ` Nikunj Kela
2023-07-19 13:58 ` Nikunj Kela
2023-07-18 16:08 ` [PATCH 2/2] firmware: arm_scmi: Add qcom hvc/shmem transport Nikunj Kela
2023-07-18 16:08 ` Nikunj Kela
2023-07-18 18:17 ` Krzysztof Kozlowski
2023-07-18 18:17 ` Krzysztof Kozlowski
2023-07-18 18:25 ` Nikunj Kela
2023-07-18 18:25 ` Nikunj Kela
2023-07-18 18:42 ` Krzysztof Kozlowski
2023-07-18 18:42 ` Krzysztof Kozlowski
2023-07-18 21:16 ` Nikunj Kela
2023-07-18 21:16 ` Nikunj Kela
2023-07-19 6:15 ` Krzysztof Kozlowski
2023-07-19 6:15 ` Krzysztof Kozlowski
2023-07-18 18:29 ` Bjorn Andersson
2023-07-18 18:29 ` Bjorn Andersson
2023-07-18 18:53 ` Nikunj Kela
2023-07-18 18:53 ` Nikunj Kela
2023-07-18 19:07 ` Bjorn Andersson
2023-07-18 19:07 ` Bjorn Andersson
2023-07-18 19:10 ` Nikunj Kela
2023-07-18 19:10 ` Nikunj Kela
2023-07-18 19:30 ` Bjorn Andersson
2023-07-18 19:30 ` Bjorn Andersson
2023-07-18 22:05 ` Nikunj Kela
2023-07-18 22:05 ` Nikunj Kela
2023-07-19 10:55 ` Cristian Marussi
2023-07-19 10:55 ` Cristian Marussi
2023-07-19 14:02 ` Nikunj Kela
2023-07-19 14:02 ` Nikunj Kela
2023-07-23 2:15 ` kernel test robot
2023-07-23 2:15 ` kernel test robot
2023-07-24 16:44 ` [PATCH v2 0/3] " Nikunj Kela
2023-07-24 16:44 ` [PATCH v2 1/3] dt-bindings: arm: convert nested if-else construct to allOf Nikunj Kela
2023-07-25 6:01 ` Krzysztof Kozlowski
2023-07-24 16:44 ` [PATCH v2 2/3] dt-bindings: arm: Add qcom specific hvc transport for SCMI Nikunj Kela
2023-07-25 6:06 ` Krzysztof Kozlowski
2023-07-24 16:44 ` [PATCH v2 3/3] firmware: arm_scmi: Add qcom hvc/shmem transport Nikunj Kela
2023-07-25 17:03 ` Cristian Marussi
2023-07-25 17:12 ` Nikunj Kela
2023-07-31 14:04 ` Nikunj Kela
2023-07-31 14:04 ` Nikunj Kela
2023-08-01 7:27 ` kernel test robot
2023-08-01 7:27 ` kernel test robot
2023-08-11 17:57 ` [PATCH v3 0/3] " Nikunj Kela
2023-08-11 17:57 ` Nikunj Kela
2023-08-11 17:57 ` [PATCH v3 1/3] dt-bindings: arm: convert nested if-else construct to allOf Nikunj Kela
2023-08-11 17:57 ` Nikunj Kela
2023-08-11 17:57 ` [PATCH v3 2/3] dt-bindings: arm: Add qcom specific hvc transport for SCMI Nikunj Kela
2023-08-11 17:57 ` Nikunj Kela
2023-08-11 17:57 ` [PATCH v3 3/3] firmware: arm_scmi: Add qcom hvc/shmem transport Nikunj Kela
2023-08-11 17:57 ` Nikunj Kela
2023-09-05 16:06 ` [PATCH v3 0/3] " Nikunj Kela
2023-09-05 16:06 ` Nikunj Kela
2023-09-05 16:37 ` Krzysztof Kozlowski
2023-09-05 16:37 ` Krzysztof Kozlowski
2023-09-07 10:36 ` Sudeep Holla
2023-09-07 10:36 ` Sudeep Holla
2023-09-07 14:20 ` Nikunj Kela
2023-09-07 14:20 ` Nikunj Kela
2023-09-07 16:16 ` [PATCH 0/2] " Konrad Dybcio
2023-09-07 16:16 ` Konrad Dybcio
2023-09-07 22:32 ` Nikunj Kela
2023-09-07 22:32 ` Nikunj Kela
2023-09-11 19:43 ` [PATCH v4 0/4] Add qcom hvc/shmem transport support Nikunj Kela
2023-09-11 19:43 ` Nikunj Kela
2023-09-11 19:43 ` [PATCH v4 1/4] firmware: arm_scmi: Add polling support for completion in smc Nikunj Kela
2023-09-11 19:43 ` Nikunj Kela
2023-10-02 18:18 ` Brian Masney
2023-10-02 18:18 ` Brian Masney
2023-10-02 18:36 ` Nikunj Kela
2023-10-02 18:36 ` Nikunj Kela
2023-10-03 10:33 ` Sudeep Holla
2023-10-03 10:33 ` Sudeep Holla
2023-10-03 10:50 ` Cristian Marussi
2023-10-03 10:50 ` Cristian Marussi
2023-10-03 15:53 ` Nikunj Kela
2023-10-03 15:53 ` Nikunj Kela
2023-10-04 16:11 ` Sudeep Holla
2023-10-04 16:11 ` Sudeep Holla
2023-10-05 3:25 ` Nikunj Kela
2023-10-05 3:25 ` Nikunj Kela
2023-09-11 19:43 ` [PATCH v4 2/4] dt-bindings: arm: convert nested if-else construct to allOf Nikunj Kela
2023-09-11 19:43 ` Nikunj Kela
2023-09-11 19:43 ` [PATCH v4 3/4] dt-bindings: arm: Add new compatible for smc/hvc transport for SCMI Nikunj Kela
2023-09-11 19:43 ` Nikunj Kela
2023-10-03 10:44 ` Sudeep Holla
2023-10-03 10:44 ` Sudeep Holla
2023-10-03 15:59 ` Nikunj Kela
2023-10-03 15:59 ` Nikunj Kela
2023-10-04 15:53 ` Sudeep Holla
2023-10-04 15:53 ` Sudeep Holla
2023-10-05 21:51 ` Nikunj Kela
2023-10-05 21:51 ` Nikunj Kela
2023-09-11 19:43 ` [PATCH v4 4/4] firmware: arm_scmi: Add qcom hvc/shmem transport support Nikunj Kela
2023-09-11 19:43 ` Nikunj Kela
2023-10-02 18:34 ` Brian Masney
2023-10-02 18:34 ` Brian Masney
2023-10-02 18:39 ` Brian Masney
2023-10-02 18:39 ` Brian Masney
2023-10-02 18:45 ` Nikunj Kela
2023-10-02 18:45 ` Nikunj Kela
2023-10-02 18:42 ` Nikunj Kela
2023-10-02 18:42 ` Nikunj Kela
2023-10-03 10:48 ` Sudeep Holla
2023-10-03 10:48 ` Sudeep Holla
2023-10-03 11:19 ` Sudeep Holla
2023-10-03 11:19 ` Sudeep Holla
2023-10-03 16:16 ` Nikunj Kela
2023-10-03 16:16 ` Nikunj Kela
2023-10-04 16:06 ` Sudeep Holla
2023-10-04 16:06 ` Sudeep Holla
2023-10-04 17:48 ` Nikunj Kela
2023-10-04 17:48 ` Nikunj Kela
2023-10-05 22:20 ` Bjorn Andersson
2023-10-05 22:20 ` Bjorn Andersson
2023-10-05 22:33 ` Nikunj Kela
2023-10-05 22:33 ` Nikunj Kela
2023-10-06 7:26 ` Sudeep Holla
2023-10-06 7:26 ` Sudeep Holla
2023-09-18 15:01 ` [PATCH v4 0/4] " Nikunj Kela
2023-09-18 15:01 ` Nikunj Kela
2023-09-18 15:15 ` Sudeep Holla
2023-09-18 15:15 ` Sudeep Holla
2023-09-18 15:54 ` Brian Masney
2023-09-18 15:54 ` Brian Masney
2023-09-19 8:56 ` Sudeep Holla
2023-09-19 8:56 ` Sudeep Holla
2023-10-02 17:31 ` Nikunj Kela
2023-10-02 17:31 ` Nikunj Kela
2023-10-02 17:58 ` Cristian Marussi
2023-10-02 17:58 ` Cristian Marussi
2023-10-03 10:34 ` Sudeep Holla
2023-10-03 10:34 ` Sudeep Holla
2023-09-18 20:32 ` Krzysztof Kozlowski
2023-09-18 20:32 ` Krzysztof Kozlowski
2023-10-06 16:42 ` [PATCH v5 0/2] Add qcom smc/hvc " Nikunj Kela
2023-10-06 16:42 ` Nikunj Kela
2023-10-06 16:42 ` [PATCH v5 1/2] dt-bindings: arm: Add new compatible for smc/hvc transport for SCMI Nikunj Kela
2023-10-06 16:42 ` Nikunj Kela
2023-10-06 20:08 ` Brian Masney
2023-10-06 20:08 ` Brian Masney
2023-10-09 14:41 ` Sudeep Holla
2023-10-09 14:41 ` Sudeep Holla
2023-10-09 14:52 ` Nikunj Kela
2023-10-09 14:52 ` Nikunj Kela
2023-10-09 21:03 ` Konrad Dybcio [this message]
2023-10-09 21:03 ` Konrad Dybcio
2023-10-06 16:42 ` [PATCH v5 2/2] firmware: arm_scmi: Add qcom smc/hvc transport support Nikunj Kela
2023-10-06 16:42 ` Nikunj Kela
2023-10-06 20:17 ` Brian Masney
2023-10-06 20:17 ` Brian Masney
2023-10-09 14:47 ` Sudeep Holla
2023-10-09 14:47 ` Sudeep Holla
2023-10-09 14:59 ` Nikunj Kela
2023-10-09 14:59 ` Nikunj Kela
2023-10-09 15:29 ` Sudeep Holla
2023-10-09 15:29 ` Sudeep Holla
2023-10-09 17:49 ` Nikunj Kela
2023-10-09 17:49 ` Nikunj Kela
2023-10-09 19:08 ` Sudeep Holla
2023-10-09 19:08 ` Sudeep Holla
2023-10-09 19:16 ` Nikunj Kela
2023-10-09 19:16 ` Nikunj Kela
2023-10-09 19:14 ` [PATCH v6 0/2] " Nikunj Kela
2023-10-09 19:14 ` Nikunj Kela
2023-10-09 19:14 ` [PATCH v6 1/2] dt-bindings: arm: Add new compatible for smc/hvc transport for SCMI Nikunj Kela
2023-10-09 19:14 ` Nikunj Kela
2023-10-09 19:14 ` [PATCH v6 2/2] firmware: arm_scmi: Add qcom smc/hvc transport support Nikunj Kela
2023-10-09 19:14 ` Nikunj Kela
2023-10-10 10:42 ` Sudeep Holla
2023-10-10 10:42 ` Sudeep Holla
2023-10-10 10:21 ` [PATCH v6 0/2] " Sudeep Holla
2023-10-10 10:21 ` Sudeep Holla
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