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 CF4B1C78834 for ; Fri, 20 Sep 2024 12:43:38 +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:Content-Transfer-Encoding: Content-Type:In-Reply-To:From:References:Cc:To:Subject:MIME-Version:Date: Message-ID:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=YFJAqd7Pic/TiyNqU8peMu0OoSNTWHw1Cjvc2PLi4oE=; b=LFUe5Hn4QcqaBeDVTs8tjtnAt6 T66KmYu85kvR92Z58dFsUn8uAa3Kzk9rMPUWpwskLkC/Kr/YY3fHnh88bIgw3I5KzSsNVem1+vhEM assNVg3NPiLTblSeHQrQo1AZFbzdHFlARhLxposLSryuEo3XccwlD6oSpLNkzHJZguKSMDz/2R1+i XbNKDTBh2/EaMPOoYAbZ6fRC9znZzIBjZMIOUlsNrq+lmFBhQykeJClkng7+S+yWa5+095bNGI7gJ VplKezufpIzBnJuZR2td2Jtf+YTI5CvEco+KrQFwhtq39VwgmQpEGlcFdD7kTNFthEE62mX5HhNJh AFnUFWoQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98 #2 (Red Hat Linux)) id 1srcyt-0000000CBO7-0R5p; Fri, 20 Sep 2024 12:43:27 +0000 Received: from nyc.source.kernel.org ([2604:1380:45d1:ec00::3]) by bombadil.infradead.org with esmtps (Exim 4.98 #2 (Red Hat Linux)) id 1srcxi-0000000CBDa-3Djy for linux-arm-kernel@lists.infradead.org; Fri, 20 Sep 2024 12:42:16 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by nyc.source.kernel.org (Postfix) with ESMTP id DC993A435EA; Fri, 20 Sep 2024 12:42:05 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 14E92C4CEC3; Fri, 20 Sep 2024 12:42:08 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1726836133; bh=rM3zf1xWpimtTUOp6jfcPic1anecVTQCmw8fhG2IIPc=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=KY3qdbBYj8P8jO3uVcsxoGFUqjDzaYJkwdea58IYeRK5ZAMSbt8SHAnYuJrA/o34s ZAj/jhIpjZMceO+aNgIz5PuqY4o2E63zDXwrviV2pzEGE5W2lwjYLdqRZHrnP5+VSH IINlQj82C8AghUsVQAHZKfvsuxGtfYtaom0Jcjm8QGdLxsFRhYR24x4sz1vOEuYw/+ 7A12CZG6BgccXyYsPAHwv2mnb7gs45p6mmd51KfEBA08f3ZD1F3wDxyF88JmUK4oqK EOmb6q896c0GPwitIR8DYuORc58l9KJc1qESNx5fDN6A/xVm9KjuJzmRSVUDs1ou9P pZ9uUZELTc5Uw== Message-ID: <85a223e9-05a4-4034-87a5-57d3eb9409b7@kernel.org> Date: Fri, 20 Sep 2024 14:42:07 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v2 1/5] dt-bindings: remoteproc: sse710: Add the External Systems remote processors To: Abdellatif El Khlifi 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 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> <20240919145741.GA7940@e130802.arm.com> From: Krzysztof Kozlowski Content-Language: en-US Autocrypt: addr=krzk@kernel.org; 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charset=UTF-8 Content-Transfer-Encoding: 7bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240920_054214_968531_AA30A92E X-CRM114-Status: GOOD ( 14.82 ) 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 19/09/2024 16:57, Abdellatif El Khlifi wrote: > 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. That's pretty standard. It does not explain me why bus addressing or different compatible are not sufficient here. Best regards, Krzysztof