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 D0DE02E7186; Fri, 19 Dec 2025 09:53:31 +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=1766138011; cv=none; b=o2hawAbOzty9kjTXtImuBf8yL76IAsRIpud43teuozacb3gfsXXnr4YL0HlTyvQeooODVvpmBjklZe1s0Qq5GgMIzxRo5I7g1+KLlIDS72D7uEtK8RtS/0Pbop1JN1O/VFGdUOB0onJ3o2wTfeF96SE9z+Czuzwn5aHpV/TlGIc= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1766138011; c=relaxed/simple; bh=sl0ToJdj8GtY2WKfJtUDvAjMTXApJ1WA925UTLERc+0=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=hBehHClpAjYK/zcs/rDGBRRPZDBuVXO0tVddK5j/UpVBe1yvUi1WsEfhCz95fx+5Yd+DuGubAWzUxkinbUHMGPb0Q9AYrAbUP6p35w94nwYesLAtfgWopRHKHqPYrePr/Nr8IIiaaK/+MD99oDv0qK6k0H1YIv0mRBjM6r7BDDA= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=qAlUgOY2; 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="qAlUgOY2" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 3D6E0C4CEF1; Fri, 19 Dec 2025 09:53:25 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1766138011; bh=sl0ToJdj8GtY2WKfJtUDvAjMTXApJ1WA925UTLERc+0=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=qAlUgOY2vxgJpx/AXLk17UkZ0pVIiYuRAg4S6R5WQY1oXyYOLvM/SIE99bqpT01it dnt04FuRlps70Cbt24VyWckXVPrbQJjuELRBimp+SnTfIvtwoZHkP5dP1TIjna9uR1 tghyz8i1lz51LjSwmV25PArwtrZvkHww39oWVv5zRK5wdHmIKPgpEdHFk30xrAtoGh 0f4eBRD73iX5dj26UynZ0LPj5V6DNx9w23grJSdhwSP/3X/Kqs9sd3NHQanQtpAWxt R/fCm/KjBnJ7Ni+nos4ScQYZ0Jzc1BwtQ4t8Nc5tBC5C7tWXfIuhBlnIvkbHlpQ0zU DtMqsYNaNPIgg== Message-ID: <57772b40-e4d9-4152-9709-04ba897608d0@kernel.org> Date: Fri, 19 Dec 2025 10:53:23 +0100 Precedence: bulk X-Mailing-List: linux-doc@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 10/12] dt-bindings: ras: document estatus provider To: Ahmed Tiba , linux-acpi@vger.kernel.org, devicetree@vger.kernel.org Cc: tony.luck@intel.com, bp@alien8.de, robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org, catalin.marinas@arm.com, will@kernel.org, linux-arm-kernel@lists.infradead.org, rafael@kernel.org, linux-doc@vger.kernel.org, Dmitry.Lamerov@arm.com, Michael.Zhao2@arm.com References: <2a2baef6-c294-4c31-bec2-10fbaa3f7941@kernel.org> <20251218103139.2238844-1-ahmed.tiba@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 18/12/2025 11:31, Ahmed Tiba wrote: > On 17/12/2025 12:41, Krzysztof Kozlowski wrote: >>> +properties: >>> + compatible: >>> + const: arm,ras-ffh >> >> Again ras - what's that? Your patch or binding must explain that. > > That updated description will explicitly expand the Arm RAS acronym so the > compatible string is self-explanatory. > >>> + >>> + reg: >>> + minItems: 1 >> >> Why is this flexible? > > I'll keep `reg` describing the CPER status buffer, cap it at two entries, and > document the second entry as the optional doorbell register that some firmware > requires before reusing the buffer. I still do not understand why this is flexible or in other words - why second address space appears and disappears. > >>> + items: >>> + - description: CPER status block exposed by firmware >>> + - description: >>> + Optional 32- or 64-bit acknowledgment register. Firmware watches this >>> + register and expects bit 0 to be written to 1 once the OS consumes the >>> + status buffer so it can reuse the record. >>> + Best regards, Krzysztof