netdev - Re: [PATCH] ath10k: do not enforce interrupt trigger type

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Date:   Wed, 18 May 2022 10:18:50 +0300
From:   Kalle Valo <kvalo@...nel.org>
To:     Steev Klimaszewski <steev@...i.org>
Cc:     Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
        "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

Steev Klimaszewski <steev@...i.org> writes:

> On 5/14/22 12:05 AM, Steev Klimaszewski wrote:
>>
>> On 5/13/22 10:57 AM, Kalle Valo wrote:
>>> 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.
>>>
>> Hello Krzystof, Kalle,
>>
>> I have seen this issue as well on a Lenovo Flex 5G, which has a WCN3990:
>>
>> wcn3990 hw1.0 target 0x00000008 chip_id 0x00000000 sub 0000:0000
>> kconfig debug 0 debugfs 0 tracing 0 dfs 0 testmode 0
>> firmware ver  api 5 features wowlan,mgmt-tx-by-reference,non-bmi
>> crc32 b3d4b790
>> htt-ver 3.86 wmi-op 4 htt-op 3 cal file max-sta 32 raw 0 hwcrypto 1
>>
>> With this patch applied, I no longer see the error message in the
>> commit message, when I unbind/bind when wifi stops working.
>>
>> Tested-by: Steev Klimaszewski <steev@...i.org>
>>
>> -- Steev
>>
> Apologies for the second email - I've tested this now on both the
> Lenovo Flex 5G, as I have seen the issue on it as well, as well as on
> the Lenovo Yoga C630, where I did not but I did have issues with
> attempting to rebind the device, prior to this patch.
>
> Firmware version for the Flex 5G is
>
> qmi chip_id 0x30224 chip_family 0x4001 board_id 0xff soc_id 0x40060000
> qmi fw_version 0x32080009 fw_build_timestamp 2020-11-16 14:44
> fw_build_id
> QC_IMAGE_VERSION_STRING=WLAN.HL.3.2.0.c8-00009-QCAHLSWSC8180XMTPLZ-1
>
> Firmware version on the Yoga C630 is
>
> qmi chip_id 0x30214 chip_family 0x4001 board_id 0xff soc_id 0x40030001
> qmi fw_version 0x2009856b fw_build_timestamp 2018-07-19 12:28
> fw_build_id QC_IMAGE_VERSION_STRING=WLAN.HL.2.0-01387-QCAHLSWMTPLZ-1

In the pending branch I added these to the commit log:

Tested-on: WCN3990 hw1.0 SNOC WLAN.HL.3.2.0.c8-00009-QCAHLSWSC8180XMTPLZ-1
Tested-on: WCN3990 hw1.0 SNOC WLAN.HL.2.0-01387-QCAHLSWMTPLZ-1

Thanks for testing, very much appreciated!

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