From: Bjorn Andersson <bjorn.andersson@linaro.org>
To: Rajendra Nayak <quic_rjendra@quicinc.com>
Cc: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>,
Andy Gross <agross@kernel.org>, Georgi Djakov <djakov@kernel.org>,
Rob Herring <robh+dt@kernel.org>,
Catalin Marinas <catalin.marinas@arm.com>,
Will Deacon <will@kernel.org>,
linux-arm-msm@vger.kernel.org, linux-pm@vger.kernel.org,
devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
Rob Herring <robh@kernel.org>
Subject: Re: [PATCH v5 1/4] dt-bindings: interconnect: qcom,msm8998-cpu-bwmon: add BWMON device
Date: Thu, 30 Jun 2022 09:26:19 -0500 [thread overview]
Message-ID: <Yr2yi+Zl6m+JD69j@builder.lan> (raw)
In-Reply-To: <7d1fe567-6dd7-a6e0-08bf-225e8d515931@quicinc.com>
On Wed 29 Jun 06:21 CDT 2022, Rajendra Nayak wrote:
>
> > This BWMON device sits between
> > CPU and Last Level Cache Controller.
>
> []...
>
> > +properties:
> > + compatible:
> > + oneOf:
> > + - items:
> > + - enum:
> > + - qcom,sdm845-cpu-bwmon
>
> should this be qcom,sdm845-llcc-bwmon instead since it actually
> tells us the llcc bw values?
> That way perhaps the other one between llcc and DDR can be
> qcom,sdm845-ddr-bwmon.
>
My understanding is that this bwmon instance measures the data
throughput on the CPU subsystem-ports and that the bwmon5 instance
measures the traffic from the memnoc towards LLCC and DDR.
Which matches the downstream naming of bwmon4 == cpu, bwmon5 == llcc.
Regards,
Bjorn
next prev parent reply other threads:[~2022-06-30 14:36 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-06-29 7:52 [PATCH v5 0/4] soc/arm64: qcom: Add initial version of bwmon Krzysztof Kozlowski
2022-06-29 7:52 ` [PATCH v5 1/4] dt-bindings: interconnect: qcom,msm8998-cpu-bwmon: add BWMON device Krzysztof Kozlowski
2022-06-29 11:21 ` Rajendra Nayak
2022-06-29 11:22 ` Krzysztof Kozlowski
2022-06-30 14:26 ` Bjorn Andersson [this message]
2022-06-29 7:52 ` [PATCH v5 2/4] soc: qcom: icc-bwmon: Add bandwidth monitoring driver Krzysztof Kozlowski
2022-06-29 7:52 ` [PATCH v5 3/4] arm64: defconfig: enable Qualcomm Bandwidth Monitor Krzysztof Kozlowski
2022-06-29 7:52 ` [PATCH v5 4/4] arm64: dts: qcom: sdm845: Add CPU BWMON Krzysztof Kozlowski
2022-06-29 11:22 ` Rajendra Nayak
2022-06-29 11:32 ` Krzysztof Kozlowski
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