From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (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 D7DD049D596; Mon, 28 Sep 2026 11:02:12 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1790593334; cv=none; b=Bcd6sFaEYOujQhVbQ8eDugZq3obgTxjqEf2YraKdUPnnJHF2LlShVXaYRlgfR9dJQinI5iQZcWTBIVryLI1LNLlOTcTN3bcxaObhudVjqwcx6mzcd29VWhh/Fy/RXymCyv5oq+cmSFNRoFBqdfoVjko9L189MEab9m/oONXMtFw= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1790593334; c=relaxed/simple; bh=NGisOX6xzRlIMDWd73gZ/6yVhZXRtE9zwAVYv+XhHbo=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=ORNs3saReDcRQbY7Ds4Zeu+GiCprpLn+av/O/ywiRJlFGubNZb/2al2kkheXb32eu2SI5e6YGRx//ppWkcbv6WNcIchHHpxjlemgHJNpU/LNAHqNjOz51k5a/vNRr6uWoIhscvkoB3TcnViFFkWgcMKTqWGVE+kKG658S2b5+a4= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=QlrsSpvO; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="QlrsSpvO" Received: by smtp.kernel.org (Postfix) with ESMTPSA id F250D1F000FF; Mon, 28 Sep 2026 11:02:06 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1790593332; bh=bAjb4nAXPR9/i3eiS24x+8vRetpGX2MA10w/UyvWNyA=; h=Date:Subject:To:Cc:References:From:In-Reply-To; b=QlrsSpvOI4SMJ6JD2IAaBKWwcUNmIuETBE+3QZ3occy7QhrVeBgXKG/n6V+oM4102 FNAOHP5q6IxYSKpFioZEM/ivKwA13o8vlf4eeCYKm8sYejjvfj12YYH+94GD+pOB4X aWi9own6vBuIKF159LGkwN76xrneol8U0o65wYnNY9ZgwyT1wdnVWiUrQivyFuprVQ iIAWVhipUhzm9Pb+gTxv0GY+5Au3nxHJ+bfJcVyDga22r5DsFxHAf0hu7v+1kjSfkj H51Zgsx/4vdWffNPd+sQVQZLJyQUaSYN+/twnZ0MriOtoOjfHHvfdZY194HVA8JcEq dVFP7m7oVAm6g== Message-ID: Date: Mon, 28 Sep 2026 13:02:04 +0200 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 1/3] dt-bindings: phy: qcom,sa8775p-dwmac-sgmii-phy: add Nord compatible To: Mohd Ayaan Anwar Cc: Vinod Koul , Neil Armstrong , Manivannan Sadhasivam , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Bartosz Golaszewski , linux-arm-msm@vger.kernel.org, linux-phy@lists.infradead.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Lorenzo Bianconi , Shawn Guo , Zhangfei Gao References: <20260923-nord_ethernet_serdes-v1-0-f8ac1c487882@oss.qualcomm.com> <20260923-nord_ethernet_serdes-v1-1-f8ac1c487882@oss.qualcomm.com> <20260928-gregarious-deft-boar-e776ae@quoll> From: Krzysztof Kozlowski Content-Language: en-US Autocrypt: addr=krzk@kernel.org; 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charset=UTF-8 Content-Transfer-Encoding: 7bit On 28/09/2026 12:56, Mohd Ayaan Anwar wrote: > On Mon, Sep 28, 2026 at 12:16:45PM +0200, Krzysztof Kozlowski wrote: >> On Wed, Sep 23, 2026 at 05:34:17AM +0530, Mohd Ayaan Anwar wrote: >>> Add the qcom,nord-dwmac-sgmii-phy compatible to the Qualcomm DWMAC >>> SGMII PHY binding. >> >> Why random order? Why not enum with existing part? > > You are right. I will group the stanalone compatibles into a single enum > and sort them alphabetically in v2. > >> Why not even compatible with existing device? > > Nord uses the QMP v7 SerDes register layout, whereas sa8775p uses the > v5 layout. The offsets differ, so Nord cannot use > qcom,sa8775p-dwmac-sgmii-phy as a fallback compatible. This is useful to be mentioned in the commit msg. Commit msg does not have to be long. It also does not have to repeat the obvious parts. Usually it is enough "Add foo bar, not compatible with existing baz baz because of different register offsets". Best regards, Krzysztof