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 6336713C695; Fri, 24 Oct 2025 12:30:56 +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=1761309056; cv=none; b=W43Ztj4ti5Jp101VctJKMZJqhrDRec6VoCUea9TuBX8ZklYB2YUfRGgLEjixaihVofiiSb/aPLBHXv6g7PrPozgsdnwHwpevfXkw2KhCYnlPLpxsGUjoklXfjlJu1vi74LahRNwvH2GjSL2xqA1p/wXqxc+XhOhcJ3o0ZzI1X3U= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1761309056; c=relaxed/simple; bh=XT/AOTXKmrxQ806Oi0c+OynPh2cfRDUjMbed7YKYidU=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=tRWg45cdhjFKoNJQCNbEa/sBYZ36FRURSLng+RCC4sTYyzlOGrfhTWR+pyIAskeXzsTBK7TXEIeGReEy2+JBbuNHZoLnfVUf5piZ/qRuRWhwBRWAxtPCLg/co0VTqEEK89PzMNEn46ezp+sBMCjO2pc1I+Wg5+NUOJNgOiNiD1Q= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=nexhUaAq; 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="nexhUaAq" Received: by smtp.kernel.org (Postfix) with ESMTPSA id EEBEAC4CEF1; Fri, 24 Oct 2025 12:30:51 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1761309055; bh=XT/AOTXKmrxQ806Oi0c+OynPh2cfRDUjMbed7YKYidU=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=nexhUaAqVhKIuBosKo+UZuRvxju8WxeK8cr4uoAXHTrdSg1J2BJel6DbS/PAm8Zdg EKYlWT2RGzaMFLoOiiPMPTfB1sWthHI4uS/TO/mdpoZ0ZfFf4DKWANm47xgHGbu0TI Ml1UrGH17gDGk4OUqdLZ3WK/PDzandoAgv4lnRiKA4UYTY1m6lDUPdBhcOWgc/RLKN 3M0pzjuKP/D3sB54dp9xUc9ZE9uIkmEnyo58JFKM7SrgpnvQzFUvSOzFQMnxGlKmDm 3+2PF7GPnAQF3nH8lo1G88vd9TUd+US2S7JEHrE3WZYspMEyjzrbOS8X/BvDG1T4rc uy/CSWhavielQ== Message-ID: <563d6efb-966e-41e7-aade-ddec2abc7568@kernel.org> Date: Fri, 24 Oct 2025 14:30:49 +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 v20 1/4] dt-bindings: i2c: Split AST2600 binding into a new YAML To: Jeremy Kerr , Ryan Chen Cc: benh@kernel.crashing.org, joel@jms.id.au, andi.shyti@kernel.org, robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org, andrew@codeconstruct.com.au, p.zabel@pengutronix.de, andriy.shevchenko@linux.intel.com, naresh.solanki@9elements.com, linux-i2c@vger.kernel.org, openbmc@lists.ozlabs.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-aspeed@lists.ozlabs.org, linux-kernel@vger.kernel.org References: <20251021013548.2375190-1-ryan_chen@aspeedtech.com> <20251021013548.2375190-2-ryan_chen@aspeedtech.com> <20251024-dark-ringtail-of-defiance-1daabd@kuoka> <2939cae6-2e8a-4528-8e27-8c932e2f82de@kernel.org> <8341a903-639b-471a-8425-a98c473f5ab0@kernel.org> <7a650d60cabcbd33b65c954b0c9c5918dfcabb09.camel@codeconstruct.com.au> From: Krzysztof Kozlowski Content-Language: en-US Autocrypt: addr=krzk@kernel.org; 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charset=UTF-8 Content-Transfer-Encoding: 7bit On 24/10/2025 10:40, Jeremy Kerr wrote: > Hi Krzysztof, > >> On 24/10/2025 09:56, Jeremy Kerr wrote: >>> Hi Krzysztof, >>> >>>> Although now I saw next patch, so clearly this commit is >>>> incomplete. >>> >>> The split that Ryan has done here - by shifting to an identical >>> separate >>> binding, then making the changes explicit - allows us to review the >>> actual changes without losing them in the move. Sounds like a >>> benefit to >>> me? >> >> Not related. I commented that rationale is incomplete. We do not move >> parts of bindings because new device is someway different. There are >> hundreds of bindings which cover different devices. We move them >> because the binding is different. > > OK, but in that case I think we're after guidance on the threshold for > "difference" here. > >> Not much different than every other soc. All of them are separate IPs. >> Look at any Samsung, NXP or Qualcomm binding. Separate IPs. > > So, something like this? > > allOf: > - $ref: /schemas/i2c/i2c-controller.yaml# > - if: > properties: > compatible: > contains: > enum: > - aspeed,ast2600-i2c-bus > then: > required: > - aspeed,global-regs else: properties: ... : false > > > I can't see how we could represent aspeed,transfer-mode though, as it's > optional on aspeed,ast2600-i2c-bus, but prohibited on others. Any hints > on that? It's shown in the example-schema, if we go that way. Best regards, Krzysztof