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[213.36.7.13]) by smtp.gmail.com with ESMTPSA id o10-20020a05600c510a00b004148a5e3188sm6066643wms.25.2024.03.28.10.39.37 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 28 Mar 2024 10:39:37 -0700 (PDT) Message-ID: <84f20fb5-5d48-419c-8eff-d7044afb81c0@freebox.fr> Date: Thu, 28 Mar 2024 18:36:48 +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: [PATCH v2 1/3] dt-bindings: net: wireless: ath10k: add qcom,no-msa-ready-indicator prop Content-Language: en-US From: Marc Gonzalez To: Kalle Valo , Jeff Johnson , ath10k Cc: wireless , DT , MSM , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Pierre-Hugues Husson , Arnaud Vrac , Bjorn Andersson , Konrad Dybcio , Jami Kettunen , Jeffrey Hugo References: In-Reply-To: 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. Signed-off-by: Pierre-Hugues Husson Signed-off-by: Marc Gonzalez --- Documentation/devicetree/bindings/net/wireless/qcom,ath10k.yaml | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/Documentation/devicetree/bindings/net/wireless/qcom,ath10k.yaml b/Documentation/devicetree/bindings/net/wireless/qcom,ath10k.yaml index 9b3ef4bc37325..1680604cd1b7e 100644 --- a/Documentation/devicetree/bindings/net/wireless/qcom,ath10k.yaml +++ b/Documentation/devicetree/bindings/net/wireless/qcom,ath10k.yaml @@ -122,6 +122,13 @@ properties: Whether to skip executing an SCM call that reassigns the memory region ownership. + qcom,no-msa-ready-indicator: + type: boolean + description: + The driver waits for an MSA_READY indicator to complete init. + If the indicator is not received, interface remains unusable. + Pretending we received the indicator works around the issue. + qcom,smem-states: $ref: /schemas/types.yaml#/definitions/phandle-array description: State bits used by the AP to signal the WLAN Q6.