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Date:   Fri, 13 May 2022 18:57:22 +0300
From:   Kalle Valo <kvalo@...nel.org>
To:     Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Cc:     "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Govind Singh <govinds@...eaurora.org>,
        ath10k@...ts.infradead.org, linux-wireless@...r.kernel.org,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        linux-arm-msm@...r.kernel.org
Subject: Re: [PATCH] ath10k: do not enforce interrupt trigger type

Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org> writes:

> Interrupt line can be configured on different hardware in different way,
> even inverted.  Therefore driver should not enforce specific trigger
> type - edge rising - but instead rely on Devicetree to configure it.
>
> All Qualcomm DTSI with WCN3990 define the interrupt type as level high,
> so the mismatch between DTSI and driver causes rebind issues:
>
>   $ echo 18800000.wifi > /sys/bus/platform/drivers/ath10k_snoc/unbind
>   $ echo 18800000.wifi > /sys/bus/platform/drivers/ath10k_snoc/bind
>   [   44.763114] irq: type mismatch, failed to map hwirq-446 for interrupt-controller@...00000!
>   [   44.763130] ath10k_snoc 18800000.wifi: error -ENXIO: IRQ index 0 not found
>   [   44.763140] ath10k_snoc 18800000.wifi: failed to initialize resource: -6

So you tested on WCN3990? On what firmware version? I can add the
Tested-on tag if you provide that.

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