linux-kernel - Re: Fwd: [PATCH v3 0/3] mailbox: zynqmp: Enable Bufferless IPIs for Versal based SOCs

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Message-ID: <1ce0b581-4613-4899-ada1-5d322f006890@amd.com>
Date: Thu, 25 Apr 2024 07:40:46 -0700
From: Ben Levinsky <ben.levinsky@....com>
To: Tanmay Shah <tanmay.shah@....com>, Michal Simek <michal.simek@....com>,
 shubhrajyoti.datta@....com, jassisinghbrar@...il.com,
 linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
 gregkh@...uxfoundation.org, ben.levinsky@....com
Subject: Re: Fwd: [PATCH v3 0/3] mailbox: zynqmp: Enable Bufferless IPIs for
 Versal based SOCs

Ping For Review
> -------- Forwarded Message --------
> Subject: [PATCH v3 0/3] mailbox: zynqmp: Enable Bufferless IPIs for Versal based SOCs
> Date: Wed, 10 Apr 2024 10:08:22 -0700
> From: Ben Levinsky <ben.levinsky@....com>
> To: jassisinghbrar@...il.com, michal.simek@....com, shubhrajyoti.datta@....com, tanmay.shah@....com, linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org
>
> For Xilinx-AMD Versal and Versal NET SOC's there exist also
> inter-processor-interrupts (IPIs) without IPI Message Buffers. For these
> enable use of IPI Mailbox driver for send/receive as well.
>
> This is enabled with new compatible string: "xlnx,versal-ipi-mailbox"
>
> Original, buffered usage for ZynqMP based SOC is still supported.
>
> Note that Versal bindings are already present in xlnx,zynqmp-ipi-mailbox.yaml
>
> v2:
> - formatting in 2/3 patch
> - remove extra handling in 3/3 versal_ipi_setup()
> v3:
> 1/3 - removed additional newline to avoid
> ./scripts/checkpatch.pl --strict -f drivers/mailbox/zynqmp-ipi-mailbox.c
> CHECK: Please don't use multiple blank lines
> #434: FILE: drivers/mailbox/zynqmp-ipi-mailbox.c:434:
> +
> +
> 2/3 - remove unused variable dev
> drivers/mailbox/zynqmp-ipi-mailbox.c:565:24: warning: variable 'dev' set but not 
> used [-Wunused-but-set-variable]
>          struct device *mdev, *dev;
> 3/3 - remove unused variable dev
>                                ^
> drivers/mailbox/zynqmp-ipi-mailbox.c:666:24: warning: variable 'dev' set but not 
> used [-Wunused-but-set-variable]
>          struct device *mdev, *dev;
>                                ^
>
> Ben Levinsky (3):
>   mailbox: zynqmp: Move of_match structure closer to usage
>   mailbox: zynqmp: Move buffered IPI setup to of_match selected routine
>   mailbox: zynqmp: Enable Bufferless IPI usage on Versal-based SOC's
>
>  drivers/mailbox/zynqmp-ipi-mailbox.c | 257 ++++++++++++++++++++++-----
>  1 file changed, 212 insertions(+), 45 deletions(-)
>