From: Sudeep Holla <sudeep.holla@arm.com>
To: Cristian Marussi <cristian.marussi@arm.com>
Cc: linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org, james.quinlan@broadcom.com,
Jonathan.Cameron@Huawei.com, f.fainelli@gmail.com,
etienne.carriere@linaro.org, vincent.guittot@linaro.org,
daniel.lezcano@linaro.org, tarek.el-sherbiny@arm.com,
adrian.slatineanu@arm.com, souvik.chakravarty@arm.com,
wleavitt@marvell.com, wbartczak@marvell.com
Subject: Re: [PATCH v3 5/9] firmware: arm_scmi: Make use of FastChannels configurable
Date: Fri, 1 Jul 2022 15:03:07 +0100 [thread overview]
Message-ID: <20220701140307.upgfn4qpxhl63syg@bogus> (raw)
In-Reply-To: <20220627123038.1427067-6-cristian.marussi@arm.com>
On Mon, Jun 27, 2022 at 01:30:34PM +0100, Cristian Marussi wrote:
> Add a Kernel configuration entry used to optionally disable, globally, the
> usage of SCMI FastChannels even on platforms where they are available.
>
> Make such option default-no to preserve the original SCMI system behaviour
> of using any available FC.
>
> Signed-off-by: Cristian Marussi <cristian.marussi@arm.com>
> ---
> v2 --> v3
> - fixed wording in Kconfig
> - reverted Kconfig logic _USE_ -> _AVOID_
> ---
> drivers/firmware/arm_scmi/Kconfig | 13 +++++++++++++
> drivers/firmware/arm_scmi/driver.c | 6 ++++++
> 2 files changed, 19 insertions(+)
>
> diff --git a/drivers/firmware/arm_scmi/Kconfig b/drivers/firmware/arm_scmi/Kconfig
> index 1e7b7fec97d9..3fb34db01014 100644
> --- a/drivers/firmware/arm_scmi/Kconfig
> +++ b/drivers/firmware/arm_scmi/Kconfig
> @@ -42,6 +42,19 @@ config ARM_SCMI_HAVE_MSG
> This declares whether a message passing based transport for SCMI is
> available.
>
> +config ARM_SCMI_AVOID_FASTCHANNELS
> + bool "Avoid using SCMI FastChannels even when available"
Without default, won't this prompt user now ? I would have explicit default n
if we are adding this. But why do we need this is my question ? This would
be a quirk IMO on systems where FC is broken. I don't want people to enable
this during testing and ship f/w with FC broken(or not developed yet).
We can add this if some platforms really need this as a quirk in the future.
Thoughts ?
--
Regards,
Sudeep
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next prev parent reply other threads:[~2022-07-01 14:04 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-06-27 12:30 [PATCH v3 0/9] SCMIv3.1 Powercap protocol and driver Cristian Marussi
2022-06-27 12:30 ` [PATCH v3 1/9] dt-bindings: firmware: arm,scmi: Add powercap protocol Cristian Marussi
2022-06-27 12:30 ` [PATCH v3 2/9] firmware: arm_scmi: Add SCMIv3.1 Powercap protocol basic support Cristian Marussi
2022-06-27 12:30 ` [PATCH v3 3/9] firmware: arm_scmi: Generalize FastChannel support Cristian Marussi
2022-06-27 12:30 ` [PATCH v3 4/9] firmware: arm_scmi: Add SCMIv3.1 Powercap FastChannels support Cristian Marussi
2022-06-27 12:30 ` [PATCH v3 5/9] firmware: arm_scmi: Make use of FastChannels configurable Cristian Marussi
2022-07-01 14:03 ` Sudeep Holla [this message]
2022-07-01 14:47 ` Cristian Marussi
2022-07-01 14:55 ` Sudeep Holla
2022-07-01 15:05 ` Cristian Marussi
2022-06-27 12:30 ` [PATCH v3 6/9] include: trace: Add SCMI FastChannel tracing Cristian Marussi
2022-06-27 12:30 ` [PATCH v3 7/9] firmware: arm_scmi: Use " Cristian Marussi
2022-06-27 12:30 ` [PATCH v3 8/9] firmware: arm_scmi: Add scmi_driver optional setup/teardown callbacks Cristian Marussi
2022-07-01 14:09 ` Sudeep Holla
2022-07-01 15:09 ` Cristian Marussi
2022-07-01 15:18 ` Sudeep Holla
2022-07-01 15:21 ` Cristian Marussi
2022-06-27 12:30 ` [PATCH v3 9/9] powercap: arm_scmi: Add SCMI Powercap based driver Cristian Marussi
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