From: Konrad Dybcio <konrad.dybcio@linaro.org>
To: "Krishna chaitanya chundru" <quic_krichai@quicinc.com>,
"Bjorn Andersson" <andersson@kernel.org>,
"Lorenzo Pieralisi" <lpieralisi@kernel.org>,
"Krzysztof Wilczyński" <kw@linux.com>,
"Rob Herring" <robh@kernel.org>,
"Bjorn Helgaas" <bhelgaas@google.com>,
"Krzysztof Kozlowski" <krzysztof.kozlowski+dt@linaro.org>,
"Conor Dooley" <conor+dt@kernel.org>,
"Manivannan Sadhasivam" <manivannan.sadhasivam@linaro.org>,
"Rob Herring" <robh+dt@kernel.org>,
"Johan Hovold" <johan+linaro@kernel.org>,
"Brian Masney" <bmasney@redhat.com>,
"Georgi Djakov" <djakov@kernel.org>
Cc: linux-arm-msm@vger.kernel.org, linux-pci@vger.kernel.org,
devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
vireshk@kernel.org, quic_vbadigan@quicinc.com,
quic_skananth@quicinc.com, quic_nitegupt@quicinc.com,
quic_parass@quicinc.com,
Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Subject: Re: [PATCH v7 3/7] PCI: qcom: Add ICC bandwidth vote for CPU to PCIe path
Date: Sat, 24 Feb 2024 01:02:03 +0100 [thread overview]
Message-ID: <53f486d1-94c7-4dd9-89fc-d80a92301700@linaro.org> (raw)
In-Reply-To: <20240223-opp_support-v7-3-10b4363d7e71@quicinc.com>
On 23.02.2024 15:48, Krishna chaitanya chundru wrote:
> To access PCIe registers, PCIe BAR space, config space the CPU-PCIe
> ICC(interconnect consumers) path should be voted otherwise it may
> lead to NoC(Network on chip) timeout. We are surviving because of
> other driver vote for this path.
> As there is less access on this path compared to PCIe to mem path
> add minimum vote i.e 1KBps bandwidth always.
>
> In suspend remove the disable this path after register space access
> is done.
>
> Reviewed-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
> Signed-off-by: Krishna chaitanya chundru <quic_krichai@quicinc.com>
> ---
[...]
>
> + /* Remove cpu path vote after all the register access is done */
> + ret = icc_disable(pcie->icc_cpu);
> + if (ret) {
> + dev_err(dev, "failed to disable icc path of cpu-pcie: %d\n", ret);
> + if (pcie->suspended) {
> + qcom_pcie_host_init(&pcie->pci->pp);
> + pcie->suspended = false;
> + }
> + qcom_pcie_icc_opp_update(pcie);
This doesn't compile (you rename it in patch 6, this is patch 3)
Konrad
next prev parent reply other threads:[~2024-02-24 0:02 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-02-23 14:47 [PATCH v7 0/7] PCI: qcom: Add support for OPP Krishna chaitanya chundru
2024-02-23 14:47 ` [PATCH v7 1/7] dt-bindings: PCI: qcom: Add interconnects path as required property Krishna chaitanya chundru
2024-02-23 14:47 ` [PATCH v7 2/7] arm64: dts: qcom: sm8450: Add interconnect path to PCIe node Krishna chaitanya chundru
2024-02-23 14:48 ` [PATCH v7 3/7] PCI: qcom: Add ICC bandwidth vote for CPU to PCIe path Krishna chaitanya chundru
2024-02-24 0:02 ` Konrad Dybcio [this message]
2024-02-27 3:14 ` Krishna Chaitanya Chundru
2024-02-27 23:22 ` Bjorn Helgaas
2024-02-28 6:38 ` Krishna Chaitanya Chundru
2024-02-28 13:39 ` Johan Hovold
2024-02-28 15:13 ` Krishna Chaitanya Chundru
2024-02-28 15:33 ` Bjorn Helgaas
2024-02-28 14:50 ` Bjorn Helgaas
2024-02-28 15:11 ` Krishna Chaitanya Chundru
2024-02-23 14:48 ` [PATCH v7 4/7] dt-bindings: pci: qcom: Add opp table Krishna chaitanya chundru
2024-02-23 14:48 ` [PATCH v7 5/7] arm64: dts: qcom: sm8450: Add opp table support to PCIe Krishna chaitanya chundru
2024-02-23 14:48 ` [PATCH v7 6/7] PCI: Bring out the pcie link speed to MBps logic to new function Krishna chaitanya chundru
2024-02-28 0:25 ` Bjorn Helgaas
2024-02-28 6:47 ` Krishna Chaitanya Chundru
2024-02-23 14:48 ` [PATCH v7 7/7] PCI: qcom: Add OPP support to scale performance state of power domain Krishna chaitanya chundru
2024-02-27 23:36 ` Bjorn Helgaas
2024-02-27 23:45 ` Bjorn Helgaas
2024-02-28 6:48 ` Krishna Chaitanya Chundru
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