linux-kernel - Re: [PATCH 5/5] i2c: geni: sdm845: dont perform DMA for OnePlus 6 devices

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Date:   Wed, 2 Dec 2020 16:39:49 +0100
From:   Wolfram Sang <wsa@...nel.org>
To:     Caleb Connolly <caleb@...nolly.tech>
Cc:     Bjorn Andersson <bjorn.andersson@...aro.org>,
        linux-arm-msm@...r.kernel.org, Andy Gross <agross@...nel.org>,
        Akash Asthana <akashast@...eaurora.org>,
        Mukesh Savaliya <msavaliy@...eaurora.org>,
        phone-devel@...r.kernel.org, ~postmarketos/upstreaming@...ts.sr.ht,
        linux-i2c@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 5/5] i2c: geni: sdm845: dont perform DMA for OnePlus 6
 devices


> >> -	if (!of_machine_is_compatible("lenovo,yoga-c630"))
> >> +	if (!of_machine_is_compatible("lenovo,yoga-c630") &&
> >> +	    !of_machine_is_compatible("oneplus,oneplus6"))
> > This hack seems to have been working around two separate issues. First
> > with iommu active the GENI wrappers needs to have their stream mapping
> > configured. Secondly there was a bug in the transaction setup that was
> > recently fixed by Doug Anderson.
> >
> > So can you please give the following patch a go? I've yet to test it on
> > the Lenovo machine, but I think it allows us to remove the quirk.
> >
> > https://lore.kernel.org/lkml/20201122034149.626045-1-bjorn.andersson@linaro.org/T/#u

Please don't top-post. I fixed it this time.

> It looks like I still have the same issue even with this patch applied.

So we still need your patch, am I reading correctly?


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