linux-kernel - Re: [PATCH 2/7] mailbox: keembay-scmi-mailbox: Add support for Keem Bay mailbox

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Message-ID: <20200708203428.GB31671@bogus>
Date:   Wed, 8 Jul 2020 21:34:28 +0100
From:   Sudeep Holla <sudeep.holla@....com>
To:     Daniele Alessandrelli <daniele.alessandrelli@...ux.intel.com>
Cc:     linux-arm-kernel@...ts.infradead.org,
        Rob Herring <robh+dt@...nel.org>,
        Jassi Brar <jassisinghbrar@...il.com>,
        Arnd Bergmann <arnd@...db.de>, Olof Johansson <olof@...om.net>,
        Paul Murphy <paul.j.murphy@...el.com>,
        Daniele Alessandrelli <daniele.alessandrelli@...el.com>,
        Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will@...nel.org>,
        Dinh Nguyen <dinguyen@...nel.org>,
        Sudeep Holla <sudeep.holla@....com>,
        linux-kernel@...r.kernel.org, devicetree@...r.kernel.org
Subject: Re: [PATCH 2/7] mailbox: keembay-scmi-mailbox: Add support for Keem
 Bay mailbox

On Tue, Jun 16, 2020 at 04:56:08PM +0100, Daniele Alessandrelli wrote:
> From: Paul Murphy <paul.j.murphy@...el.com>
> 
> Keem Bay SoC has a ARM trusted firmware-based secure monitor which acts
> as the SCP for the purposes of power management over SCMI.
> 
> This driver implements the transport layer for SCMI to function.
>

Please use the smc transport support in driver/firmware/arm_scmi/smc.c
for this. You don't need mailbox support for SMC/HVC. Basically you
don't need this driver at all and you have everything you need to support
what you want.

Let me know if you face issues.

-- 
Regards,
Sudeep