From: Sai Prakash Ranjan <saiprakash.ranjan@codeaurora.org>
To: Mike Leach <mike.leach@linaro.org>,
Suzuki K Poulose <suzuki.poulose@arm.com>,
Mathieu Poirier <mathieu.poirier@linaro.org>
Cc: Russell King <linux@armlinux.org.uk>,
linux-arm-msm@vger.kernel.org,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
linux-arm-kernel <linux-arm-kernel@lists.infradead.org>,
Stephen Boyd <swboyd@chromium.org>
Subject: Re: [PATCH] coresight: dynamic-replicator: Fix handling of multiple connections
Date: Tue, 19 May 2020 14:34:03 +0530 [thread overview]
Message-ID: <825b922dab9821fa46f321d600648e10@codeaurora.org> (raw)
In-Reply-To: <4bd741e342f8e2743197ed6105dacffa@codeaurora.org>
Hi Mike, Suzuki,
On 2020-05-16 15:34, Sai Prakash Ranjan wrote:
> 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.
>
Sorry for going back and forth on this one, but I think having a
firmware
property will clearly help us identify the issue on specific SoCs rather
than
wholesale workaround for all QCOM SoCs. For now, I will post a patch
based on
the property "qcom,replicator-loses-context", please feel free to yell
at me
if this is completely wrong and we can discuss it further in that patch.
Thanks,
Sai
--
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member
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next prev parent reply other threads:[~2020-05-19 9:04 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-04-26 14:37 [PATCH] coresight: dynamic-replicator: Fix handling of multiple connections Sai Prakash Ranjan
2020-04-27 9:20 ` Suzuki K Poulose
2020-04-27 9:45 ` Mike Leach
2020-04-27 13:53 ` Suzuki K Poulose
2020-04-28 12:23 ` Sai Prakash Ranjan
2020-04-29 11:47 ` Sai Prakash Ranjan
2020-04-29 13:49 ` Suzuki K Poulose
2020-04-29 13:59 ` Sai Prakash Ranjan
2020-04-29 14:27 ` Mike Leach
2020-04-29 14:48 ` Sai Prakash Ranjan
2020-04-29 16:58 ` Mike Leach
2020-04-29 17:11 ` Sai Prakash Ranjan
2020-05-06 7:35 ` Sai Prakash Ranjan
2020-05-08 8:53 ` Sai Prakash Ranjan
2020-05-11 11:14 ` Mike Leach
2020-05-11 14:16 ` Sai Prakash Ranjan
2020-05-11 14:30 ` Suzuki K Poulose
2020-05-11 14:41 ` Sai Prakash Ranjan
2020-05-12 11:49 ` Mike Leach
2020-05-12 17:45 ` Mathieu Poirier
2020-05-12 17:46 ` Sai Prakash Ranjan
2020-05-12 21:52 ` Mike Leach
2020-05-13 1:49 ` Stephen Boyd
2020-05-13 15:45 ` Sai Prakash Ranjan
2020-05-13 15:33 ` Sai Prakash Ranjan
2020-05-16 10:04 ` Sai Prakash Ranjan
2020-05-19 9:04 ` Sai Prakash Ranjan [this message]
2020-05-11 14:34 ` Sai Prakash Ranjan
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