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[213.36.7.13]) by smtp.gmail.com with ESMTPSA id w14-20020a05600c474e00b004131310a29fsm1366528wmo.15.2024.03.07.07.29.27 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 07 Mar 2024 07:29:27 -0800 (PST) Message-ID: <2f588948-0261-4985-91e8-d5060e673cd9@freebox.fr> Date: Thu, 7 Mar 2024 16:29:27 +0100 Precedence: bulk X-Mailing-List: linux-wireless@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 1/2] dt-bindings: net: wireless: ath10k: add qcom,no-msa-ready-indicator prop Content-Language: en-US To: Jeff Johnson , Conor Dooley , Kalle Valo Cc: ath10k , wireless , DT , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Pierre-Hugues Husson , Jami Kettunen , Jeffrey Hugo References: <14daa98e-7fd3-4ebb-87bb-5d2c1fba679f@freebox.fr> <871q8wk7o3.fsf@kernel.org> <3392f356-7b19-483d-b9f8-3bd84068fa52@freebox.fr> <87wmqoilzf.fsf@kernel.org> <20240229-ageless-primal-7a0544420949@spud> From: Marc Gonzalez In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit On 29/02/2024 20:46, Jeff Johnson wrote: > On 2/29/2024 10:40 AM, Conor Dooley wrote: > >> On Wed, Feb 28, 2024 at 06:37:08PM +0200, Kalle Valo wrote: >> >>> Marc Gonzalez writes: >> >>>> As mentioned in my other reply, there are several msm8998-based >>>> devices affected by this issue. Is it not appropriate to consider >>>> a kernel-based work-around? >>> >>> Sorry, not following you here. But I'll try to answer anyway: >>> >>> I have understood that Device Tree is supposed to describe hardware, not >>> software. This is why having this property in DT does not look right >>> place for this. For example, if the ath10k firmware is fixed then DT >>> would have to be changed even though nothing changed in hardware. But of >>> course DT maintainers have the final say. >> >> I dunno, if the firmware affects the functionality of the hardware in a >> way that cannot be detected from the operating system at runtime how >> else is it supposed to deal with that? >> The devicetree is supposed to describe hardware, yes, but at a certain >> point the line between firmware and hardware is invisible :) >> Not describing software is mostly about not using it to determine >> software policy in the operating system. > > FWIW I've compared ath10k to the out-of-tree Android driver and there > are discrepancies in this area. I've asked the development team that > supports ath10k to provide a recommendation. Hello Jeff, Have you heard back from the dev team? Do they confirm that an issue involving missing MSA_READY notifications was ever noticed? What devices were affected? (All msm8998? A subset of msm8998?) Was the issue eventually fixed? (Probably fixed, otherwise newer devices would be affected) -- Regards.