linux-kernel - Re: [PATCH v6 06/10] mailbox: add CIX mailbox driver

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Message-ID: <Z_8CKa0SwPI8-MEY@nchen-desktop>
Date: Wed, 16 Apr 2025 09:04:41 +0800
From: Peter Chen <peter.chen@...tech.com>
To: Sudeep Holla <sudeep.holla@....com>
Cc: <soc@...nel.org>, <robh@...nel.org>, <krzk+dt@...nel.org>,
	<conor+dt@...nel.org>, <catalin.marinas@....com>, <will@...nel.org>,
	<arnd@...db.de>, <jassisinghbrar@...il.com>,
	<linux-arm-kernel@...ts.infradead.org>,
	<devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
	<cix-kernel-upstream@...tech.com>, <maz@...nel.org>,
	<kajetan.puchalski@....com>, Guomin Chen <Guomin.Chen@...tech.com>,
	Gary Yang <gary.yang@...tech.com>,
	Lihua Liu <Lihua.Liu@...tech.com>
Subject: Re: [PATCH v6 06/10] mailbox: add CIX mailbox driver

On 25-04-15 19:39:21, Sudeep Holla wrote:
> EXTERNAL EMAIL
> 
> On Tue, Apr 15, 2025 at 03:27:20PM +0800, Peter Chen wrote:
> > From: Guomin Chen <Guomin.Chen@...tech.com>
> >
> > The CIX mailbox controller, used in the Cix SoCs, like sky1.
> > facilitates message transmission between multiple processors
> > within the SoC, such as the AP, PM, audio DSP, SensorHub MCU,
> > and others.
> >
> 
> Do you have a specification for this mailbox ?

Our TRM is on the road.

> I see lot of resemblance with Arm MHUv3. Is this a variant of it ?
> I just don't want to see a separate driver for a small tweak of MHU v3 IP
> itself.

Not from the Arm, it is our self-design.

-- 

Best regards,
Peter