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 DBC38155C88; Fri, 31 Jan 2025 07:26:50 +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=1738308411; cv=none; b=G+tw3sI40WuoIX159zr4eJDTZkHXSu9SxSRAjF4lBSF+CNncR0RzljMEBiKFIbRiKv6vhy/pZaMVSk//Iji4fIYJrkjDw3eRGixvCb88znr1SvvpLLcOBA97xkXIzrHvLwENlpWa5O+PjYDQxyufDdU2xVsBOrKRmPwDFpRJHYU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1738308411; c=relaxed/simple; bh=Q2e7UALnZghKuCGZEzriVZeAWWaFg32d8OizcQKQJh0=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=lcCUguxvPvlqonRXtWQfhiV+ZCcvqJZ5PJUjUjyhYo9uZVoEEFGQ6H3uNIStt3IpdvwQI6ba4EdvZjVPHBthth5+b/xBUyPbsj05f6r4cBQM/Anl85qAfV8tMzOJnYTJKeR2pK6L+2b+ef9gWlxhlFkVI+Cb26oMtUcHpu8giXQ= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=Hajy3JfK; 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="Hajy3JfK" Received: by smtp.kernel.org (Postfix) with ESMTPSA id B62F5C4CED1; Fri, 31 Jan 2025 07:26:44 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1738308410; bh=Q2e7UALnZghKuCGZEzriVZeAWWaFg32d8OizcQKQJh0=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=Hajy3JfKR7x9BURH9yzp3wI29pfSM8ktf5VzU73hgiA+MiQ/TBigT+jT6AG3kIlnX bvdysWvyp1wxcp49pQIfhiva0KLf8MlabSUgPjDfOo4Sw+eac6qGg00aik53VHkeed qLMslTRJMm+Xw+6ZzVl0JL6Syo2JuLsyTJYWfbLq3gs7OmUDfx6wzUEJ/XPnyEjVd4 a8BDD6rKgDElsxltFeJ+Kh0/X3BBWUo8HIotbADc3I/lFRK0RKvseWbgw05p4Npqou u9aIbKbSwNZOVu489THEMc2KeSqf4dyvph2funwT2/FL1HUivxAfkss6jlP9VRkP0d mn3jk1jrcjDcQ== Message-ID: <3e020ca6-025e-4a88-9aaa-a432d8aa668d@kernel.org> Date: Fri, 31 Jan 2025 08:26:41 +0100 Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v4 2/4] dt-bindings: mfd: Add MDIO interface to rtl9301-switch To: Chris Packham Cc: "lee@kernel.org" , "robh@kernel.org" , "krzk+dt@kernel.org" , "conor+dt@kernel.org" , "andrew+netdev@lunn.ch" , "davem@davemloft.net" , "edumazet@google.com" , "kuba@kernel.org" , "pabeni@redhat.com" , "tsbogend@alpha.franken.de" , "hkallweit1@gmail.com" , "linux@armlinux.org.uk" , "sander@svanheule.net" , "markus.stockhausen@gmx.de" , "devicetree@vger.kernel.org" , "linux-kernel@vger.kernel.org" , "netdev@vger.kernel.org" , "linux-mips@vger.kernel.org" References: <20250120040214.2538839-1-chris.packham@alliedtelesis.co.nz> <20250120040214.2538839-3-chris.packham@alliedtelesis.co.nz> <20250122-macho-flat-sawfly-7ca93d@krzk-bin> From: Krzysztof Kozlowski Content-Language: en-US Autocrypt: addr=krzk@kernel.org; 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charset=UTF-8 Content-Transfer-Encoding: 7bit On 22/01/2025 21:53, Chris Packham wrote: >>> }; >>> + >>> + mdio-controller { >> No, no resources here, no unit address. Look at other nodes - they have >> the resource, the address. Mixing such nodes is clear indication this is >> not correct hardware description and you do this only for Linux. >> >> Fold child device into parent. > > In this particular case all the mdio stuff is actually contained to a > range starting at offset 0xca00. I dropped it because it was simpler in > the driver to use the full 16-bit address rather than trying to use > offsets from the base address that didn't correspond to the datasheet. > As you've highlighted that's making the dt-binding impose driver > specifics so would adding back `mdio-controller@ca00` and `reg = <0xca00 > 0x200>;` be OK even if the driver doesn't actually use them? If this matches the hardware, then yes. Best regards, Krzysztof