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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

  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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