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 0C820223DE7; Tue, 7 Oct 2025 06:35:34 +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=1759818935; cv=none; b=oeISjioq0J7eXdPHBkpW+H7UoTYSg0jNkaFQ6npMHqERoWvMTsXsNkyt4c3XyEkU5kpcFFKDwhrq6mJChDmF8BZryAKAvkzbgVW3xkuQ8L0fcLuwBe97fl6C3NwXy5EbCKeAX/yDmmTbLE9yjEwsCqCj8ycfs1SqU4vNRra2k+0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1759818935; c=relaxed/simple; bh=+rs4B8RYkOruOw+0klo7abhTG1Z6c0No+NhmE2DC0ak=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=FCMZkdkoGFlvx/VOWzaNjSdJdX1WAq1CpfvER98NFLGIhoE9L7AFVByZkCTmb30HZThrxPWQdPw5rW7jwqRh5FeQjni3xuUKh2Yz+RDjTBTbFpa8nxMPJtYJc39TdrVXfeTm6OCI2UC6cQovh6oQUyez+6P0iJw5ieUyKqrwb7s= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=kpDUhvjH; 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="kpDUhvjH" Received: by smtp.kernel.org (Postfix) with ESMTPSA id E6BDBC4CEF1; Tue, 7 Oct 2025 06:35:30 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1759818934; bh=+rs4B8RYkOruOw+0klo7abhTG1Z6c0No+NhmE2DC0ak=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=kpDUhvjHumwQsb767/AQ/+7r6OdbuAcSWH1zwrrMsopcu6gYjJ43z2I45JeEOvHcv 2IrGXYHvRiEuggzZtxtQm9VzMfEXsFR2Ykh16Zf8uZJz4D3+DjXGc+nRnpl80uF6ke OYUEJPz07RcvdbQZct8G6TtqmYPfN4CCK0FBanDiKxUsdXNBbEyx+vMUW42T3D6pV7 lslCSrVUIC3tYkq3Z/4mEHRchrtr+JwZeDcYeChjcs9zl4ey1GODPXxEBoZMF2Y+fJ S2+SrKpMRN8clRTrT/fKbYvUru2Y/mySuCDUpcRxCC+jD7MgmX4JTuOiSrS32Mx1DC Q5pkyAEe3pUfQ== Message-ID: <30101fb9-e2eb-4050-896a-7be629ced44d@kernel.org> Date: Tue, 7 Oct 2025 15:35:28 +0900 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 1/2] dt-bindings: counter: Add new ti,omap-dmtimer-cap compatible To: Gokul Praveen , j-keerthy@ti.com, vigneshr@ti.com, wbg@kernel.org, linux-kernel@vger.kernel.org, robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org, devicetree@vger.kernel.org Cc: u-kumar1@ti.com, n-francis@ti.com References: <20250909080042.36127-1-g-praveen@ti.com> <20250909080042.36127-2-g-praveen@ti.com> <6faff5b1-65b1-41ee-aba8-8c06a2bc6f58@kernel.org> <9653740a-44fe-46bb-92c8-f7fc26cbe5ee@ti.com> From: Krzysztof Kozlowski Content-Language: en-US Autocrypt: addr=krzk@kernel.org; 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charset=UTF-8 Content-Transfer-Encoding: 7bit On 26/09/2025 18:06, Gokul Praveen wrote: >> >>> + >>> + ti,timers: >>> + description: Timer instance phandle for the Capture >> >> So the only resource is phandle? That's completely fake device then. NAK. >> > > > The OMAP Timer IP can operate in 3 modes: Timer, PWM mode or capture > (mutually exclusive). > The timer/ti,timer-dm.yaml file describes the timer mode of operation. > It encapsulates base IP block and reg property is also part the same > binding. > > This node represents the capture mode with phandle reference to the > timer DT node. This is modeled all the same lines as how PWM > functionality is implemented in pwm/ti,omap-dmtimer-pwm.yaml Different modes do not have their own device nodes. It is still one device, so one device node. > > Now, if this needs to change, please suggest alternate. > > One solution is perhaps to add a new property to ti,timer-dm.yaml itself > to indicate the mode of IP? Not sure, depends what this really is and how it is used. I can also imagine that consumer defines the mod of operation. Or mode of operation could be even configured runtime, thus not suitable for DT at all. Best regards, Krzysztof