From: Florian Fainelli <f.fainelli@gmail.com>
To: Peng Fan <peng.fan@nxp.com>,
"robh+dt@kernel.org" <robh+dt@kernel.org>,
"mark.rutland@arm.com" <mark.rutland@arm.com>,
"jassisinghbrar@gmail.com" <jassisinghbrar@gmail.com>,
"sudeep.holla@arm.com" <sudeep.holla@arm.com>,
"andre.przywara@arm.com" <andre.przywara@arm.com>
Cc: "devicetree@vger.kernel.org" <devicetree@vger.kernel.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"linux-arm-kernel@lists.infradead.org"
<linux-arm-kernel@lists.infradead.org>,
dl-linux-imx <linux-imx@nxp.com>
Subject: Re: [PATCH V9 2/2] mailbox: introduce ARM SMC based mailbox
Date: Thu, 26 Sep 2019 19:39:26 -0700 [thread overview]
Message-ID: <9dff720e-2e81-a7b8-ff52-1f2c3d257368@gmail.com> (raw)
In-Reply-To: <1569377224-5755-3-git-send-email-peng.fan@nxp.com>
On 9/24/2019 7:09 PM, Peng Fan wrote:
> From: Peng Fan <peng.fan@nxp.com>
>
> This mailbox driver implements a mailbox which signals transmitted data
> via an ARM smc (secure monitor call) instruction. The mailbox receiver
> is implemented in firmware and can synchronously return data when it
> returns execution to the non-secure world again.
> An asynchronous receive path is not implemented.
> This allows the usage of a mailbox to trigger firmware actions on SoCs
> which either don't have a separate management processor or on which such
> a core is not available. A user of this mailbox could be the SCP
> interface.
>
> Modified from Andre Przywara's v2 patch
> https://lore.kernel.org/patchwork/patch/812999/
>
> Cc: Andre Przywara <andre.przywara@arm.com>
> Signed-off-by: Peng Fan <peng.fan@nxp.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Thanks for your persistence working on this!
--
Florian
prev parent reply other threads:[~2019-09-27 2:39 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-09-25 2:09 [PATCH V9 0/2] mailbox: arm: introduce smc triggered mailbox Peng Fan
2019-09-25 2:09 ` [PATCH V9 1/2] dt-bindings: mailbox: add binding doc for the ARM SMC/HVC mailbox Peng Fan
2019-09-25 17:09 ` Andre Przywara
2019-09-26 9:15 ` Peng Fan
2019-09-27 14:46 ` Rob Herring
2019-09-25 2:09 ` [PATCH V9 2/2] mailbox: introduce ARM SMC based mailbox Peng Fan
2019-09-25 17:09 ` Andre Przywara
2019-09-27 2:39 ` Florian Fainelli [this message]
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