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 666E1249F9; Mon, 5 May 2025 09:59:45 +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=1746439186; cv=none; b=V/B1LX7g1s+G4tefscIQf/WKlGPDo/mBQuEfs6F8O5cC068Fa0yRdwzMF5qlulDUEOAaHjBb8U1/VOey3VV+EgogTDyde63+4cYtfue2h6cECH6anzrUbEuyQ4v4gaxPCJ6djMYKM6+No7jP4K1gMXUgnjPfiP7k5ur6H3Nv9wM= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1746439186; c=relaxed/simple; bh=de3l3kkB8vXxfDlYtVQYyBBmvnV8dNWzcLCceAxX9Dk=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=I9N3U7CKZoJ044x2DZtC6G09P3nXnuPqpNUIleppcvs2SC/zi0NIQE2pwRLnTy+xtx6pHT+0h11J15h85lUL/IcbI6Wvpw9ESfEVxES1fjHnRN+YeGTmFZtRpCF7NRJfjR8CPAaG7AjDEFnj+Dlj8u6wAQM9hVRgq0vJ3QQ7U70= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=DoR/UX8q; 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="DoR/UX8q" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 797DFC4CEE4; Mon, 5 May 2025 09:59:41 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1746439185; bh=de3l3kkB8vXxfDlYtVQYyBBmvnV8dNWzcLCceAxX9Dk=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=DoR/UX8qvvenyPV8SY3/uHGrLOWi0y8zR5ZZ9FapeHgGqBA0R733YJDgKA88+wOzo UvbKBp96GZImkR1ek1zAcRac+MOZBegH6XHhCTJ/tDN5z6eMoB1B1cSAORN94V7Jgs 2/IWLn3a2PYh9IRqwgexynx+Vwn45obCs27DP483n6hljWuxcPgBYnwYXeMbXkvu8r f3yv9ifXghy9cFt/Oo7frZJbkFNDZzfvlOg/OYkcl2WjFwcHYSqvCYOIPKbzpYLgOE IdygZs3L+WwsCAsi/uKYE1/icHn5qdkLAeX/inECAb6pxddSE5mokurUbmemUrmjRY ydFYGtsZVhymg== Message-ID: <1de5c0b7-7761-4d0c-bced-7e26150e995f@kernel.org> Date: Mon, 5 May 2025 11:59:39 +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 v4 1/8] dt-bindings: serial: describe SA8255p To: Praveen Talari Cc: Greg Kroah-Hartman , Jiri Slaby , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Bjorn Andersson , Konrad Dybcio , linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org, linux-serial@vger.kernel.org, devicetree@vger.kernel.org, psodagud@quicinc.com, djaggi@quicinc.com, quic_msavaliy@quicinc.com, quic_vtanuku@quicinc.com, quic_arandive@quicinc.com, quic_mnaresh@quicinc.com, quic_shazhuss@quicinc.com, Nikunj Kela References: <20250502171417.28856-1-quic_ptalari@quicinc.com> <20250502171417.28856-2-quic_ptalari@quicinc.com> <20250504-hilarious-ultra-grebe-d67e7d@kuoka> <6f97510c-eb6c-4f3b-b219-aa8d895b060b@quicinc.com> <20250505-ostrich-of-impossible-conversion-a0f8ac@kuoka> <4ebe065e-9686-4e35-bb00-a9e816fb8926@quicinc.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 05/05/2025 08:51, Praveen Talari wrote: >>>>> + serial@990000 { >>>>> + compatible = "qcom,sa8255p-geni-uart"; >>>>> + reg = <0x990000 0x4000>; >>>>> + interrupts = ; >>>> Why isn't here wakeup interrupt? Commit msg also does not help me to >>>> understand why number of interrupts varies. >>> Currently we are not using wake-irq because it is optional for our current >>> implementation. >> Great explanation. I asked why is it optional, answer because it is >> optional. > sorry. >> >> What does it mean optional? This is part of the SoC, so how given one, >> fixed SoC can have it routed or not routed in the same time? > > the serial driver doesn't enter runtime suspend mode until the port is > closed. > > therefore, there is no need for a wake IRQ when the driver is in an > active state You described current Linux driver, so if we change Linux driver or we try for example FreeBSD, then bindings are different? Again, explain how SoC can have this interrupt not routed. Best regards, Krzysztof