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 86623AD51; Sat, 26 Oct 2024 18:06:44 +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=1729966004; cv=none; b=cmQb1998KZS/7wAU7Td/E5GApXMX2tMLBqxI3JN/2xj577dvd+5SLBuGD43dNOKpx6t91Lbs4gg+AK7Wpedi2WYslq531aPkEj7v1k5F+v/9UMkYTrsXuPyoQains926z4oiUm7RI8FicZEZbIie28vKZ3uZI3K+ZLLmCELhVgY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1729966004; c=relaxed/simple; bh=aM+t48EQyebBuPwGnQByy87XIh9KI53o5EMfmD3AuEE=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=BwsEYMXFvuppBiVJd18m+GiPf9Rv+R+0gdn+xXxARfI/bx9yurOPVZDCawXxVRmZhaS0i0vOMZMkON6ahSqMvH0mx8eiUb8BV4kEEF/uSbyUPIMtaoN9fYkJSzRevtYIBQk3JG9Sf+tIzu9SjI+JNj1Y9ojPO4P3Vqe7nJ5xg2w= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=JuiKDAOo; 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="JuiKDAOo" Received: by smtp.kernel.org (Postfix) with ESMTPSA id E45D7C4CEC6; Sat, 26 Oct 2024 18:06:39 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1729966004; bh=aM+t48EQyebBuPwGnQByy87XIh9KI53o5EMfmD3AuEE=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=JuiKDAOoO+xs9sxWE4TH73oV+bATFS0iaU/LkQ+CaVLZSScSTgDCHQ60gNHFqOieO RxzlHFo2Fhf4MqBNVOYygliBDTs739wHkmYM2sLamo7uBTcbkDJkXnPItKblqTD0mE QRV4cfBjayX63nWQHtODCeW8gpMViGIUWU3nL9KMcWr/12vV5PXtyU/cPKNO2VXatM ecIv1z+xd0HK9RgK67lGJKLOEPO0RI0uD1ZPARq4XjtY2aYhpx9fVNccXkXKDlmAnX FcR/YrCu8xTT/U803f0pDycsndgyRqdCHdOgMCxkeyyfZ201hgFMIy+CXEpkgRI4Du fSHcEhRqlx0Qw== Message-ID: <91a8d0ab-a6a6-4dfa-8613-8d4dbafeda40@kernel.org> Date: Sat, 26 Oct 2024 20:06:37 +0200 Precedence: bulk X-Mailing-List: linux-gpio@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v2] dt-bindings: pinctrl: convert pinctrl-mcp23s08.txt to yaml format To: Tarang Raval , Himanshu Bhavani Cc: "linus.walleij@linaro.org" , "robh@kernel.org" , "krzk+dt@kernel.org" , Conor Dooley , "linux-gpio@vger.kernel.org" , "devicetree@vger.kernel.org" , "linux-kernel@vger.kernel.org" References: <20241024124654.26775-1-himanshu.bhavani@siliconsignals.io> From: Krzysztof Kozlowski Content-Language: en-US Autocrypt: addr=krzk@kernel.org; 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charset=UTF-8 Content-Transfer-Encoding: 8bit On 26/10/2024 17:02, Tarang Raval wrote: > Hi Krzysztof , Himanshu > >>>> + >>>> +    i2c { >>> >>> Keep one complete example for i2c and one for spi. This was not in >>> previous patch and change log does not explain why you need three >>> examples. >> >> Okay, I will drop one example of I2C > > In ex1: use when you only need basic GPIO and interrupt capabilities > without additional pin control and in ex2: use when you need pull-up > resistors on specific GPIO pins or a reset line. > > Original bindings state that this node can be implemented in two > different ways, so we should maintain both examples for reference. Example is not the binding. If you claim conversion is incomplete, it must be done through the binding, not example. > > But it's up to you, I trust your expertise on this, Krzysztof > >>>> +        #address-cells = <1>; >>>> +        #size-cells = <0>; >>>> + >>>> +        mcp23017: gpio@21 { >>> >>> Drop unused label >>   >> May I know how its unused, AFAIK, Since it's an I/O expanded, it’s referenced elsewhere, so keeping it is necessary for >functionality. > > I agree with Himanshu. > It's definitely used for reset GPIOs, LED pins, or something similar. So point to the specific line in this file. Really, it's no different than every other binding. If it is different, provide some arguments why this is different. Best regards, Krzysztof