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 A8B401DC988; Mon, 30 Jun 2025 11:33:09 +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=1751283189; cv=none; b=a7x//4E3RUf46hxPdGrxkMSR4KGnCofAUzYyj6mJuRqwOVYVtkp1bOSd72RtVEjRzW6OTR1aeyVhPbVp559FwtovPOlEEPjPhEVFFlUX5mwWk/5GeKr//am1qeqAXBuL2GLSUqY1HfIP0T3GAN90VjywVCRRA6ovBYQZObIOydg= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1751283189; c=relaxed/simple; bh=IPMjnLBknZLh6qHuUlnriRP1h0VMQJ8k1ulWCLOWsR8=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=Ru6GkL5juzyJw198ncl6ZkzymfT9toEMvMqbvWCsTCH5lM7Sq5zlP83YZNoF8EecxVRHc/HHi7HGQyGo7W/n0TEPkM1FJWAyYD+mDGdV2423T58v8yFZqQRH3IqPeRJloZKQzBvMV0g2rhZY+Eagr+9rosaEPWRcpX2dmkU0W8w= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=fg0JUpCb; 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="fg0JUpCb" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 4448CC4CEE3; Mon, 30 Jun 2025 11:33:01 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1751283189; bh=IPMjnLBknZLh6qHuUlnriRP1h0VMQJ8k1ulWCLOWsR8=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=fg0JUpCbHIqOpclzBvOvtwLBzfPd/Qn3PaZj1HQ6JdZLf38C+kLWXzUgZo3ES5T/w sFYvUlCmilGHhmUALi+PWqXKRCuQXYngwYpUpTfcUztR10jufXhXbEz/u2IUeMM+S5 i9hLY9yvgACXDK3Dvl9KeUryJ3rEFYz9rS67h/dcc0PZoMVkjRxNJDxCGi/cVGhvdJ OOwLBi2MKgfdRXh0MZjnuiRBMZOI5EyZ/99N8MgEIwdHomNhNg92TOsXXDU/Uw+bGI eJ+JFtnb/4XECJKBx41exqgcdVtswjhnDIY0Lp4aMPVqhaxuLvpQZ5XT+yZa3LFlbd U974yi+y+lKzA== Message-ID: <3f983134-5726-4a42-b534-132f51a8154f@kernel.org> Date: Mon, 30 Jun 2025 13:32:59 +0200 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v6 7/8] serial: qcom-geni: Enable PM runtime for serial driver To: Praveen Talari , Bjorn Andersson Cc: Greg Kroah-Hartman , Jiri Slaby , Rob Herring , Krzysztof Kozlowski , Conor Dooley , 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 References: <20250606172114.6618-1-quic_ptalari@quicinc.com> <20250606172114.6618-8-quic_ptalari@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 30/06/2025 07:10, Praveen Talari wrote: > Hi Bjorn, > > Thank you for review. > > On 6/17/2025 9:23 PM, Bjorn Andersson wrote: >> On Fri, Jun 06, 2025 at 10:51:13PM +0530, Praveen Talari wrote: >>> Add Power Management (PM) runtime support to Qualcomm GENI >>> serial driver. >>> >> >> Doesn't this have impact on the behavior outside of your >> project? Or is the transition from qcom_geni_serial_pm() to explicit >> RPM merely moving code around? >> >> Seems like this deserves to not be hidden in a middle of a patch series. >> >>> Introduce necessary callbacks and updates to ensure seamless >>> transitions between power states, enhancing overall power >>> efficiency. >>> >> >> This commit message fails to state why we need runtime PM support in the >> driver. > > Introduce PM runtime support to the Qualcomm GENI serial driver to enable > better power efficiency and modularity across diverse resource control > mechanisms, including Linux and firmware-managed systems. No, not better, that's some marketing blob without saying how this power efficiency is visible/observable. Best regards, Krzysztof