linux-kernel - Re: [PATCH v3 8/8] coresight-tpdm: Add msr register support for CMB

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Date: Fri, 15 Dec 2023 11:24:16 +0000
From: James Clark <james.clark@....com>
To: Tao Zhang <quic_taozha@...cinc.com>,
 Suzuki K Poulose <suzuki.poulose@....com>
Cc: Jinlong Mao <quic_jinlmao@...cinc.com>,
 Greg Kroah-Hartman <gregkh@...uxfoundation.org>, coresight@...ts.linaro.org,
 linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
 devicetree@...r.kernel.org, Tingwei Zhang <quic_tingweiz@...cinc.com>,
 Yuanfang Zhang <quic_yuanfang@...cinc.com>,
 Trilok Soni <quic_tsoni@...cinc.com>, Song Chai <quic_songchai@...cinc.com>,
 linux-arm-msm@...r.kernel.org, andersson@...nel.org,
 Mathieu Poirier <mathieu.poirier@...aro.org>,
 Suzuki K Poulose <suzuki.poulose@....com>,
 Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
 Konrad Dybcio <konradybcio@...il.com>, Mike Leach <mike.leach@...aro.org>,
 Rob Herring <robh+dt@...nel.org>,
 Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>
Subject: Re: [PATCH v3 8/8] coresight-tpdm: Add msr register support for CMB



On 21/11/2023 02:24, Tao Zhang wrote:
> Add the nodes for CMB subunit MSR(mux select register) support.
> CMB MSRs(mux select registers) is to separate mux,arbitration,
> ,interleaving,data packing control from stream filtering control.
> 
> Reviewed-by: James Clark <james.clark@....com>
> Signed-off-by: Tao Zhang <quic_taozha@...cinc.com>
> Signed-off-by: Mao Jinlong <quic_jinlmao@...cinc.com>
> ---
>  .../testing/sysfs-bus-coresight-devices-tpdm  |  8 ++
>  drivers/hwtracing/coresight/coresight-tpdm.c  | 86 +++++++++++++++++++
>  drivers/hwtracing/coresight/coresight-tpdm.h  | 16 +++-
>  3 files changed, 109 insertions(+), 1 deletion(-)
> 
> diff --git a/Documentation/ABI/testing/sysfs-bus-coresight-devices-tpdm b/Documentation/ABI/testing/sysfs-bus-coresight-devices-tpdm
> index e0b77107be13..914f3fd81525 100644
> --- a/Documentation/ABI/testing/sysfs-bus-coresight-devices-tpdm
> +++ b/Documentation/ABI/testing/sysfs-bus-coresight-devices-tpdm
> @@ -249,3 +249,11 @@ Description:
>  		Accepts only one of the 2 values -  0 or 1.
>  		0 : Disable the timestamp of all trace packets.
>  		1 : Enable the timestamp of all trace packets.
> +
> +What:		/sys/bus/coresight/devices/<tpdm-name>/cmb_msr/msr[0:31]
> +Date:		September 2023
> +KernelVersion	6.7

This probably needs bumping now. Maybe 6.9?