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Mon, 29 Dec 2025 23:25:32 +0000 (UTC) Authentication-Results: lists.trustedfirmware.org; dkim=pass (2048-bit key; unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20201202 header.b=aY9VGVHh; dkim-atps=neutral Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by sea.source.kernel.org (Postfix) with ESMTP id 09E6A41697; Mon, 29 Dec 2025 23:25:32 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id B29ADC4CEF7; Mon, 29 Dec 2025 23:25:31 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1767050731; bh=gBic61XhRnhOC+5nNfIY22uN2UTZjrJ0gw/UGoHisUw=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=aY9VGVHhUxXe6n10yUd3Ij+dXkWLdgZUtVl2t7HHs71hCLrC6/bpMaQhij2BtIOKX 8I9pes7DADMkBv7d6XdEZdDndszB06v88ncLpH1JwJCzwgDIQiwzlEfOBK3CVDDrJ7 g6AWyiwCStbcLLy2cD90Xpf77wPXM7KUN3Ziq614OHCEYrBfIKMXAvKJ9+da00RSoa Eh9kpcEtN61/0dJ7xPJwAQ65YtSVVmkC4MX/rIBohFQKt5HUe9P7lLhDT6eM6sme6f supwRhDPB4Lf3Vpl4g88tqGjg4ygBBa7DKyXeAli3xv7pGi007KfbwA4t9pS90CUcg ZBVU67HBEptBQ== Date: Mon, 29 Dec 2025 17:25:30 -0600 To: Arnaud Pouliquen Subject: Re: [PATCH v20 1/6] dt-bindings: firmware: Add TEE remoteproc service binding Message-ID: <20251229232530.GA2753472-robh@kernel.org> References: <20251217153917.3998544-1-arnaud.pouliquen@foss.st.com> <20251217153917.3998544-2-arnaud.pouliquen@foss.st.com> MIME-Version: 1.0 Content-Type: text/plain; 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no-senders; approved; emergency; loop; banned-address; member-moderation; header-match-op-tee.lists.trustedfirmware.org-0; nonmember-moderation; administrivia; implicit-dest; max-recipients; max-size; news-moderation; no-subject; digests; suspicious-header CC: Bjorn Andersson , Mathieu Poirier , Krzysztof Kozlowski , Conor Dooley , Sumit Garg , linux-stm32@st-md-mailman.stormreply.com, linux-arm-kernel@lists.infradead.org, linux-remoteproc@vger.kernel.org, linux-kernel@vger.kernel.org, op-tee@lists.trustedfirmware.org, devicetree@vger.kernel.org X-Mailman-Version: 3.3.5 Precedence: list List-Id: Archived-At: List-Archive: List-Help: List-Owner: List-Post: List-Subscribe: List-Unsubscribe: From: Rob Herring via OP-TEE Reply-To: Rob Herring On Wed, Dec 17, 2025 at 04:39:12PM +0100, Arnaud Pouliquen wrote: > Add a device tree binding for the TEE-based remote processor control > service implemented as an OP-TEE Trusted Application identified by > UUID 80a4c275-0a47-4905-8285-1486a9771a08. > > The TEE service node is a child of the "linaro,optee-tz" firmware node and > acts as a container for remoteproc devices that are controlled via TEE. Is this generic for any remoteproc device or just ST's remoteproc. Looks like the latter to me. > In addition, the "linaro,optee-tz" binding is updated to specify the > '#address-cells' and '#size-cells' values used for child TEE service > nodes. I'm pretty sure I already rejected per service/app child nodes for OP-TEE when its binding was submitted. If we do need something in DT to define some resources, then can't we have some sort of standard/common communications channel? I don't care to see some sort of free-for-all where we have every vendor doing their own thing. OP-TEE needs to standarize this. Rob