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Date:   Sat, 16 May 2020 15:34:48 +0530
From:   Sai Prakash Ranjan <>
To:     Mike Leach <>,
        Suzuki K Poulose <>,
        Mathieu Poirier <>
Cc:     Stephen Boyd <>,
        Linux Kernel Mailing List <>,,
        linux-arm-kernel <>,
        Russell King <>
Subject: Re: [PATCH] coresight: dynamic-replicator: Fix handling of multiple

Hi Mike, Suzuki


>> Please look at the CoreSight components specification 3.0 (ARM IHI
>> 0029E) Section B2.1.2 which describes the Unique Component Identifier
>> (UCI).
>> As mentioned above this consists of a combination of bits from
>> multiple registers, including PIDR4.
> Ok got it now, thanks for clearing the doubt. I will go ahead with
> this method to identify QCOM impl and post a patch.

Looking some more into this, since we have this limitation only on
specific replicator on very few QCOM SoCs, rather than having a blanket
workaround for all QCOM, we were thinking it would be better to have
this workaround based on a firmware property something like
"qcom,replicator-loses-context" for those replicators with this
limitation and then set the drvdata->check_idfilter_val based on
this property.


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