From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 14535C44501 for ; Thu, 9 Jul 2026 08:12:55 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:In-Reply-To:Content-Type: MIME-Version:References:Message-ID:Subject:Cc:To:From:Date:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=UXqUN5fCLyZCbN7uBG3JtTUMvasjG9uxSeitMnaL8+k=; b=XNIcnJARV4gBcUD1YuA42jb+IA Zy98T6ArbUBSteO0/2cY+1DHT0YcHfC7uFoWBMsPXWqFIZmsdxDH/SfCmEAtI2KUeMtENT5VHOMd+ pAVWegxqzaZnZo/GWcwpcZj5eQzUrlFAeWurD6Sy2lyKqODV2p11O9koxKvpq9xR0tZ0p9A4zgWHR wrdZo9jyZpf6xpVY1rQ+XSQ8EPZ2Xo6jUAPPCfJO9QfdmE65erpuaGE0BR2NNL2c2bwgnRkeexC3m H86GL8IVYy3rAGWqXyng7tOddE5/gsaCU4KtAkZnayC3r/ZhTTm90gIn78yNjAB0EHCGXb5o/A14h fa4jwz+g==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1whjsG-00000001O5Y-27DW; Thu, 09 Jul 2026 08:12:48 +0000 Received: from tor.source.kernel.org ([2600:3c04:e001:324:0:1991:8:25]) by bombadil.infradead.org with esmtps (Exim 4.99.1 #2 (Red Hat Linux)) id 1whjsF-00000001O5O-0BJU for linux-arm-kernel@lists.infradead.org; Thu, 09 Jul 2026 08:12:47 +0000 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) by tor.source.kernel.org (Postfix) with ESMTP id 74AA26001A; Thu, 9 Jul 2026 08:12:46 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id A4A6B1F00ACA; Thu, 9 Jul 2026 08:12:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1783584766; bh=UXqUN5fCLyZCbN7uBG3JtTUMvasjG9uxSeitMnaL8+k=; h=Date:From:To:Cc:Subject:References:In-Reply-To; b=hrD8WIf3qzu0F+NJBla2ORd0jSfnJE21w4csBd2BoRKkRnlvPYCzn382brDiLHOj6 87oqQ616n/DJfrnhSBmlb3oG60ugLTh5j1mzNkHmhY6Z8YJpIQASmRLUWTF7A/IodW 8nFE30Vmw2Cvzzswm97tz4XI45zKyEi7OXV1OM/bE5sxo33NSZDycJ2dVfiClRdRAX wUQOovmWzLjGgAMNypKyzT6h0W0oBzDFNcjm6xfSbmI40CLXFMgLPj6X3jo8KsO+vW B4wYjrBOf90XL69uOA4QkbnSax4KvdQ1OWVqiyWUMtlH7+Ah+1F2j0EAHYY3lFIYXc B5PWKjlbCSvtw== Date: Thu, 9 Jul 2026 09:12:37 +0100 From: Sudeep Holla To: "Aneesh Kumar K.V (Arm)" Cc: linux-coco@lists.linux.dev, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Sudeep Holla , Catalin Marinas , Greg KH , Jeremy Linton , Jonathan Cameron , Lorenzo Pieralisi , Mark Rutland , Will Deacon , Steven Price , Suzuki K Poulose , Andre Przywara Subject: Re: [PATCH v8 1/6] firmware: smccc: Add an Arm SMCCC bus Message-ID: <20260708-precise-prudent-firefly-17c1ce@sudeepholla> References: <20260707081351.1680209-1-aneesh.kumar@kernel.org> <20260707081351.1680209-2-aneesh.kumar@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20260707081351.1680209-2-aneesh.kumar@kernel.org> X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Tue, Jul 07, 2026 at 01:43:45PM +0530, Aneesh Kumar K.V (Arm) wrote: > SMCCC-discovered firmware services are currently represented by separate > platform devices, such as smccc_trng and arm-cca-dev. Those devices do not > represent independent DT/ACPI-described platform resources; they are > features of the SMCCC firmware interface. > > Add an Arm SMCCC bus for services discovered through the SMCCC firmware > interface. The bus provides SMCCC device and driver registration helpers, > name-based matching, modalias generation, and a sysfs modalias attribute so > SMCCC service drivers can bind to discovered firmware services and autoload > as modules. > > Follow-up changes can then register SMCCC firmware services as arm-smccc > devices instead of creating independent per-feature platform devices. > > Based on arm_ffa code > Reviewed-by: Sudeep Holla -- Regards, Sudeep