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Date: Sat, 27 Jun 2026 22:08:46 -0500
From: Bjorn Andersson <andersson@kernel.org>
To: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Cc: george.moussalem@outlook.com, Jens Axboe <axboe@kernel.dk>, 
	Ulf Hansson <ulfh@kernel.org>, Rob Herring <robh@kernel.org>, 
	Krzysztof Kozlowski <krzk+dt@kernel.org>, Conor Dooley <conor+dt@kernel.org>, 
	Johannes Berg <johannes@sipsolutions.net>, Jeff Johnson <jjohnson@kernel.org>, 
	Bartosz Golaszewski <brgl@kernel.org>, Marcel Holtmann <marcel@holtmann.org>, 
	Luiz Augusto von Dentz <luiz.dentz@gmail.com>, Balakrishna Godavarthi <quic_bgodavar@quicinc.com>, 
	Rocky Liao <quic_rjliao@quicinc.com>, Saravana Kannan <saravanak@kernel.org>, 
	Andrew Lunn <andrew@lunn.ch>, Heiner Kallweit <hkallweit1@gmail.com>, 
	Russell King <linux@armlinux.org.uk>, "David S. Miller" <davem@davemloft.net>, 
	Eric Dumazet <edumazet@google.com>, Jakub Kicinski <kuba@kernel.org>, 
	Paolo Abeni <pabeni@redhat.com>, Simon Horman <horms@kernel.org>, 
	Konrad Dybcio <konradybcio@kernel.org>, Mathieu Poirier <mathieu.poirier@linaro.org>, 
	Philipp Zabel <p.zabel@pengutronix.de>, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, 
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	ath10k@lists.infradead.org, linux-arm-msm@vger.kernel.org, linux-bluetooth@vger.kernel.org, 
	netdev@vger.kernel.org, linux-remoteproc@vger.kernel.org
Subject: Re: [PATCH 2/6] remoteproc: qcom: Add M0 BTSS secure PIL driver
Message-ID: <akCQA-bLpp31QVGV@baldur>
References: <20260625-ipq5018-bluetooth-v1-0-d999be0e04f7@outlook.com>
 <20260625-ipq5018-bluetooth-v1-2-d999be0e04f7@outlook.com>
 <38aceb33-b28e-4994-b277-de070b6dae2b@oss.qualcomm.com>
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In-Reply-To: <38aceb33-b28e-4994-b277-de070b6dae2b@oss.qualcomm.com>

On Fri, Jun 26, 2026 at 01:20:25PM +0200, Konrad Dybcio wrote:
> On 6/25/26 4:10 PM, George Moussalem via B4 Relay wrote:
> > From: George Moussalem <george.moussalem@outlook.com>
> > 
> > Add support to bring up the M0 core of the bluetooth subsystem found in
> > the IPQ5018 SoC.
> > 
> > The signed firmware loaded is authenticated by TrustZone. If successful,
> > the M0 core boots the firmware and the peripheral is taken out of reset
> > using a Secure Channel Manager call to TrustZone.
> > 
> > Signed-off-by: George Moussalem <george.moussalem@outlook.com>
> > ---
> 
> Can this not fit inside the existing PAS driver?
> 

While the start/stop SCM calls look the same, this doesn't follow any of
the surrounding concepts. So I think this should follow the other
non-remoteproc uses of mdt_loader and scm directly instead.

Regards,
Bjorn

> Konrad