Re: [PATCH v3 0/3] Work around missing MSA_READY indicator for msm8998 devices

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On Tue, Apr 30, 2024 at 12:24:40AM +0100, Bryan O'Donoghue wrote:
> On 29/04/2024 15:01, Marc Gonzalez wrote:
> > Work around missing MSA_READY indicator in ath10k driver
> > (apply work-around for all msm8998 devices)
> > 
> > CHANGELOG v3
> > - Add a paragraph in binding commit to explain why we use
> >    a DT property instead of a firmware feature bit.
> > - Warn if the "no_msa_ready_indicator" property is true,
> >    but we actually receive the indicator.
> > 
> > Marc Gonzalez (3):
> >    dt-bindings: net: wireless: ath10k: add qcom,no-msa-ready-indicator prop
> >    wifi: ath10k: do not always wait for MSA_READY indicator
> >    arm64: dts: qcom: msm8998: set qcom,no-msa-ready-indicator for wifi
> > 
> >   Documentation/devicetree/bindings/net/wireless/qcom,ath10k.yaml |  5 +++++
> >   arch/arm64/boot/dts/qcom/msm8998.dtsi                           |  1 +
> >   drivers/net/wireless/ath/ath10k/qmi.c                           | 11 +++++++++++
> >   drivers/net/wireless/ath/ath10k/qmi.h                           |  1 +
> >   4 files changed, 18 insertions(+)
> > 
> 
> I wonder if you could infer the workaround based on firmware version,
> instead of kernel passed flag ?
> 

It's been a while, but I attempted this for the similar workaround for
SDM845 RB3 et al. I vaguely remember concluding that the different
devices I worked on, had firmware from different branches without any
suitable version scheme to use for such comparison - which is why we
have "qcom,snoc-host-cap-8bit-quirk;" in those nodes (which apparently
is not documented in the yaml).

I'd also rather see us ask Marc spending time on some more fruitful
exercise...

Regards,
Bjorn




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