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Message-ID: <3a4171ee-997c-4ff6-a550-31f66c1882f3@quicinc.com>
Date: Tue, 30 Apr 2024 07:40:16 -0700
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Subject: Re: [PATCH v3 3/3] arm64: dts: qcom: msm8998: set
 qcom,no-msa-ready-indicator for wifi
Content-Language: en-US
To: Marc Gonzalez <mgonzalez@freebox.fr>, Kalle Valo <kvalo@kernel.org>,
        ath10k <ath10k@lists.infradead.org>
CC: wireless <linux-wireless@vger.kernel.org>,
        DT
	<devicetree@vger.kernel.org>, MSM <linux-arm-msm@vger.kernel.org>,
        "Rob
 Herring" <robh+dt@kernel.org>,
        Krzysztof Kozlowski
	<krzysztof.kozlowski+dt@linaro.org>,
        Conor Dooley <conor+dt@kernel.org>,
        Pierre-Hugues Husson <phhusson@freebox.fr>,
        Arnaud Vrac <avrac@freebox.fr>, Bjorn Andersson <andersson@kernel.org>,
        Konrad Dybcio
	<konrad.dybcio@linaro.org>,
        Jami Kettunen <jamipkettunen@gmail.com>,
        "Jeffrey
 Hugo" <quic_jhugo@quicinc.com>,
        Dmitry Baryshkov
	<dmitry.baryshkov@linaro.org>,
        Alexey Minnekhanov
	<alexeymin@postmarketos.org>
References: <ebbda69c-63c1-4003-bf97-c3adf3ccb9e3@freebox.fr>
 <0914f96e-fcfd-4088-924a-fc1991bce75f@freebox.fr>
From: Jeff Johnson <quic_jjohnson@quicinc.com>
In-Reply-To: <0914f96e-fcfd-4088-924a-fc1991bce75f@freebox.fr>
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On 4/29/2024 7:07 AM, Marc Gonzalez wrote:
> The ath10k driver waits for an "MSA_READY" indicator
> to complete initialization. If the indicator is not
> received, then the device remains unusable.
> 
> cf. ath10k_qmi_driver_event_work()
> 
> Several msm8998-based devices are affected by this issue.
> Oddly, it seems safe to NOT wait for the indicator, and
> proceed immediately when QMI_EVENT_SERVER_ARRIVE.
> 
> Jeff Johnson wrote:
> 
>   The feedback I received was "it might be ok to change all ath10k qmi
>   to skip waiting for msa_ready", and it was pointed out that ath11k
>   (and ath12k) do not wait for it.
> 
>   However with so many deployed devices, "might be ok" isn't a strong
>   argument for changing the default behavior.
> 
> cf. also
> https://wiki.postmarketos.org/wiki/Qualcomm_Snapdragon_835_(MSM8998)#WLAN
> 
> Signed-off-by: Marc Gonzalez <mgonzalez@freebox.fr>
Acked-by: Jeff Johnson <quic_jjohnson@quicinc.com>