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Date: Thu, 14 May 2026 15:25:34 +0200
From: Greg KH <gregkh@linuxfoundation.org>
To: Catalin Marinas <catalin.marinas@arm.com>
Cc: Suzuki K Poulose <suzuki.poulose@arm.com>,
	"Aneesh Kumar K.V (Arm)" <aneesh.kumar@kernel.org>,
	linux-coco@lists.linux.dev, linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org, Jeremy Linton <jeremy.linton@arm.com>,
	Jonathan Cameron <jic23@kernel.org>,
	Lorenzo Pieralisi <lpieralisi@kernel.org>,
	Mark Rutland <mark.rutland@arm.com>,
	Sudeep Holla <sudeep.holla@arm.com>, Will Deacon <will@kernel.org>,
	Steven Price <steven.price@arm.com>
Subject: Re: [PATCH v5 1/3] firmware: smccc: coco: Manage arm-smccc platform
 device and CCA auxiliary drivers
Message-ID: <2026051445-magician-coffee-962f@gregkh>
References: <20260514094030.42495-1-aneesh.kumar@kernel.org>
 <20260514094030.42495-2-aneesh.kumar@kernel.org>
 <0c88bcee-65b5-4328-87e6-e1c714c3d1ca@arm.com>
 <2026051420-amusement-drove-73e6@gregkh>
 <agXL12bNh4gGyK1K@arm.com>
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In-Reply-To: <agXL12bNh4gGyK1K@arm.com>

On Thu, May 14, 2026 at 02:19:19PM +0100, Catalin Marinas wrote:
> On Thu, May 14, 2026 at 02:55:48PM +0200, Greg Kroah-Hartman wrote:
> > On Thu, May 14, 2026 at 12:04:13PM +0100, Suzuki K Poulose wrote:
> > > On 14/05/2026 10:40, Aneesh Kumar K.V (Arm) wrote:
> > > > Make the SMCCC driver responsible for registering the arm-smccc platform
> > > > device and after confirming the relevant SMCCC function IDs, create
> > > > the arm_cca_guest auxiliary device.
> > > > 
> > > 
> > > There are a few changes squashed in to this patch. Please could we
> > > split the patch in the following order ?
> > > 
> > > 1. Add platform device for arm-smccc
> > 
> > Do not make any more "fake" platform devices please.
> > 
> > > 2. Move TRNG to Auxilliary Device - (Even though it is a later patch, move
> > > it before the RSI changes)
> > 
> > No, move it to the faux api please.
> 
> So should we end up with:
> 
>   /sys/devices/faux/arm-smccc/
>     smccc_trng/
>     arm-rsi-dev/

What types are these child devices?  Also faux ones?

If so, great.

thanks,

greg k-h