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 41BFB2236EB; Thu, 19 Dec 2024 11:39:43 +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=1734608384; cv=none; b=EakiYMxHfT/uD8qkAlcCpkQ171tasnwvTrMojCloJf8Rc4f3xnTgCJFevii1K8ZDd0uUnQEmwM+hT1kWWcuIeXEXWQVG3cnYtaL4KZommuPKy8rzpMASpYG1c6SHicW3MXL8K7DnHYZaRcmMMI3jjmuoV/mA2yvi5l6Crlav0Hg= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1734608384; c=relaxed/simple; bh=s1zz9MrvmCB8Hgx+l40AvJDyfL2iozU8OjCTwAQz6oI=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=HC040UVSFan3U1LPOIVuwO2YI7totHwIPCsnfR6vXhtxSudH/89vFZGehSe8WXsvnkSzwrZN+6R3ws2kYu5Yx3QStLhlIEyUVYy3bplrP2QR9a3dKc9iA3PYnpJmzSh6Ktkl5GsAjtiwOLNxmLTeQp+QgM7X6C8MmLX41prl9Sg= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=nfCATepD; 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="nfCATepD" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 3C006C4CECE; Thu, 19 Dec 2024 11:39:39 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1734608383; bh=s1zz9MrvmCB8Hgx+l40AvJDyfL2iozU8OjCTwAQz6oI=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=nfCATepDBK8it7ra8WttTdq+mdxHrbo7P0B9wN2hoYgkbaic8lXnf6hZoVUOwCL2a LbFUkN5B/Wh7dI7hrjljy1SFPxakYogdD7Qu5Td2u53RN515kTIVi3eY+KD3wF7CLF yNClflRTH7l6GJ3cZNOJ5D7UG9FH8mT7AHtSlaAT6lgHjDeVAOSJnD+ZyGvGdKnq+T QALTt2xBi3cf0V8afwYPghgzDcoy2kztrMfifg5DlvxSbJWvcRrqJ5brV0zRHBkIIG La6bXdV978uzWxfJwdZcnCf/FI2kS3ljqHY2+mFWUjbP1QJCt8ULOKE1APDenmrOHB afPJsB0+H8byw== Message-ID: <3c09367c-808b-4414-bf6a-99e0bdaa3a27@kernel.org> Date: Thu, 19 Dec 2024 12:39:38 +0100 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 v2 1/2] dt-binding: clock: cs2600: Add support for the CS2600 To: Charles Keepax Cc: Paul Handrigan , mturquette@baylibre.com, sboyd@kernel.org, linux-clk@vger.kernel.org, robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org, devicetree@vger.kernel.org, patches@opensource.cirrus.com References: <20241219024631.3145377-1-paulha@opensource.cirrus.com> <20241219024631.3145377-2-paulha@opensource.cirrus.com> <3glyuu4yg7wbykdsfm33m5evnn7fwg4dbplrkgzcceld3cgu2s@t3xjlhryt2y6> From: Krzysztof Kozlowski Content-Language: en-US Autocrypt: addr=krzk@kernel.org; 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charset=UTF-8 Content-Transfer-Encoding: 7bit On 19/12/2024 12:02, Charles Keepax wrote: > On Thu, Dec 19, 2024 at 09:51:00AM +0100, Krzysztof Kozlowski wrote: >> On Wed, Dec 18, 2024 at 08:46:30PM -0600, Paul Handrigan wrote: >>> + clock-output-names: >>> + maxItems: 3 >>> + description: Names for CLK_OUT, BCLK_OUT and FSYNC_OUT clocks. >>> + >>> + cirrus,aux-output-source: >>> + description: >>> + Specifies the function of the auxiliary output pin >>> + $ref: /schemas/types.yaml#/definitions/uint32 >>> + enum: >>> + - 0 # CS2600_AUX_OUTPUT_FREQ_UNLOCK: Frequency unlock notification >>> + - 1 # CS2600_AUX_OUTPUT_PHASE_UNLOCK: Phase unlock notification >>> + - 2 # CS2600_AUX_OUTPUT_NO_CLKIN: CLK_IN is not available >> >> I still do not understand how "clk_in", which is required, could be not >> available. To me it contradicts itself, but maybe just description is a >> bit incomplete. > > I think yeah the description perhaps needs to make this more > clear this is setting an error output pin, ie. the pin goes high > for the linked error condition. > >>> +/* CS2600 Auxiliary Output */ >>> +#define CS2600_AUX_OUTPUT_FREQ_UNLOCK 0 >>> +#define CS2600_AUX_OUTPUT_PHASE_UNLOCK 1 >>> +#define CS2600_AUX_OUTPUT_NO_CLKIN 2 >> >> I still don't see why these three are supposed to be bindings. Drop >> them. > > In a binding one would presumably do: > > cirrus,aux-output-source = ; > > Apologies but I don't quite understand what you mean by the values > are not used in the binding? The driver reads the property and sets There is no user of these defines, so not a binding. > the pin to have the appropriate function. Admittedly one could drop It's not a proof that this is a binding. > the defines and then DTS would just have to do: > > cirrus,aux-output-source = <0>; > > But that feels a bit less helpful when reading the binding. Binding and being helpful are two different things. This to be the binding, it has to be used as a binding, so some translation layer between driver and DTS. It must have an user in DTS. I keep repeating this over and over... Best regards, Krzysztof