From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id A39C238DD3; Fri, 20 Sep 2024 12:42:13 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1726836133; cv=none; b=XbQnPAZ7H8U9qK1+dvp0+eGePT7yUV3xciQ/b84H6islC6GC/FzrjBJVDKn9QTM8mlFBV0rv+Tc4Y9vevM1geGzdkuUMPp37ACG/YwaSxhdsQ9wpwG/xUh64HZdRq1vzzXJ+p3sVeN6pr8bzkbjOB6vncPJfThGKZbSVyNILoPc= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1726836133; c=relaxed/simple; bh=rM3zf1xWpimtTUOp6jfcPic1anecVTQCmw8fhG2IIPc=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=ORSc5M5bh9ItqIIPoMM2explU04Yjt9aQq48N8xlA0N+ecgmxbt9tynNXcYqhufXMNTL8XpCp/xv1UlaBD8HOQsleawioil86zqm17vepvis3oemdDvDD7emWw6gpEkkfi8x8lg9GwJdOD4OHhL52rjZhTZOlPoFMM4oPQXfFbE= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=KY3qdbBY; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="KY3qdbBY" 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 Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: 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 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