From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 77BC119B59D; Thu, 19 Sep 2024 14:57:54 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=217.140.110.172 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1726757876; cv=none; b=E1xSUDPM+yjRlGOYLfD8TxaQv6G9QIrjm2riPUL057M3wEDA81rTeKZGudTGlPeNaK0LvlyeSS9WacVm/jCys38xnvpc+3nPx3OkN1ep6TTIeoLg+yTayjgocWho5hRybpxsy14s28C8cmViRba8rpt4DGMpv/wTzRDmCHq7d60= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1726757876; c=relaxed/simple; bh=W3Ku+a7f0Dz6ceI3TMqFraG7tkSnVcQJQJyuQe1NDQM=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=KB41DyQBQ1n5v6it6j7I85E+Lyb0tKE6Ot5k/Pa6CowS3oSCNjPsi7NpgONT/9/lXby7SnsNXBuf6VCq+lyJ5CNgBPDfc1wociU1mt9EUxXjp9bKPUqky6TSiIWD4AUYXnGu5UbIpQksO/QAs/gBoDcHPlYgmU0iL426z4ljcyE= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=arm.com; spf=pass smtp.mailfrom=arm.com; arc=none smtp.client-ip=217.140.110.172 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=arm.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=arm.com Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 57155FEC; Thu, 19 Sep 2024 07:58:23 -0700 (PDT) Received: from e130802.arm.com (e130802.arm.com [10.1.31.57]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 508033F71A; Thu, 19 Sep 2024 07:57:50 -0700 (PDT) Date: Thu, 19 Sep 2024 15:57:41 +0100 From: Abdellatif El Khlifi To: Krzysztof Kozlowski Cc: mathieu.poirier@linaro.org, Adam.Johnston@arm.com, Hugues.KambaMpiana@arm.com, Drew.Reed@arm.com, andersson@kernel.org, conor+dt@kernel.org, devicetree@vger.kernel.org, krzysztof.kozlowski+dt@linaro.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-remoteproc@vger.kernel.org, liviu.dudau@arm.com, lpieralisi@kernel.org, robh@kernel.org, sudeep.holla@arm.com, robin.murphy@arm.com Subject: Re: [PATCH v2 1/5] dt-bindings: remoteproc: sse710: Add the External Systems remote processors Message-ID: <20240919145741.GA7940@e130802.arm.com> References: <20240822170951.339492-1-abdellatif.elkhlifi@arm.com> <20240822170951.339492-2-abdellatif.elkhlifi@arm.com> <20240919093517.GA43740@e130802.arm.com> <222b3b11-151a-4ad0-91ea-54ae8f280bcb@kernel.org> Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <222b3b11-151a-4ad0-91ea-54ae8f280bcb@kernel.org> Hi Krzysztof, > >>> + '#extsys-id': > >> > >> '#' is not correct for sure, that's not a cell specifier. > >> > >> But anyway, we do not accept in general instance IDs. > > > > I'm happy to replace the instance ID with another solution. > > In our case the remoteproc instance does not have a base address > > to use. So, we can't put remoteproc@address > > > > What do you recommend in this case please ? > > Waiting one month to respond is a great way to drop all context from my > memory. The emails are not even available for me - gone from inbox. > > Bus addressing could note it. Or you have different devices, so > different compatibles. Tricky to say, because you did not describe the > hardware really and it's one month later... > Sorry for waiting. I was in holidays. I'll add more documentation about the external system for more clarity [1]. Basically, Linux runs on the Cortex-A35. The External system is a Cortex-M core. The Cortex-A35 can not access the memory of the Cortex-M. It can only control Cortex-M core using the reset control and status registers mapped in the memory space of the Cortex-A35. I'll make sure this explanation is added to the binding and commit log for more clarity. Thanks for the suggestion regarding supporting multiple instances of the External system. I will send a new version shortly addressing all comments. [1]: paragraph 2.3, https://developer.arm.com/documentation/dai0550/D/?lang=en Kind regards Abdellatif