linux-kernel - Re: [PATCH v8 2/7] arm64: dts: qcom: sm8450: Add interconnect path to PCIe node

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Date: Wed, 6 Mar 2024 17:04:54 +0100
From: Konrad Dybcio <konrad.dybcio@...aro.org>
To: Krishna chaitanya chundru <quic_krichai@...cinc.com>,
 Bjorn Andersson <andersson@...nel.org>,
 Lorenzo Pieralisi <lpieralisi@...nel.org>,
 Krzysztof Wilczyński <kw@...ux.com>,
 Rob Herring <robh@...nel.org>, Bjorn Helgaas <bhelgaas@...gle.com>,
 Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
 Conor Dooley <conor+dt@...nel.org>,
 Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>,
 Rob Herring <robh+dt@...nel.org>, Johan Hovold <johan+linaro@...nel.org>,
 Brian Masney <bmasney@...hat.com>, Georgi Djakov <djakov@...nel.org>
Cc: linux-arm-msm@...r.kernel.org, linux-pci@...r.kernel.org,
 devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
 vireshk@...nel.org, quic_vbadigan@...cinc.com, quic_skananth@...cinc.com,
 quic_nitegupt@...cinc.com, quic_parass@...cinc.com
Subject: Re: [PATCH v8 2/7] arm64: dts: qcom: sm8450: Add interconnect path to
 PCIe node



On 3/2/24 04:59, Krishna chaitanya chundru wrote:
> Add pcie-mem & cpu-pcie interconnect path to the PCIe nodes.
> 
> Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
> Signed-off-by: Krishna chaitanya chundru <quic_krichai@...cinc.com>
> ---
>   arch/arm64/boot/dts/qcom/sm8450.dtsi | 8 ++++++++
>   1 file changed, 8 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/qcom/sm8450.dtsi b/arch/arm64/boot/dts/qcom/sm8450.dtsi
> index 01e4dfc4babd..6b1d2e0d9d14 100644
> --- a/arch/arm64/boot/dts/qcom/sm8450.dtsi
> +++ b/arch/arm64/boot/dts/qcom/sm8450.dtsi
> @@ -1781,6 +1781,10 @@ pcie0: pcie@...0000 {
>   					<0 0 0 3 &intc 0 0 0 151 IRQ_TYPE_LEVEL_HIGH>, /* int_c */
>   					<0 0 0 4 &intc 0 0 0 152 IRQ_TYPE_LEVEL_HIGH>; /* int_d */
>   
> +			interconnects = <&pcie_noc MASTER_PCIE_0 0 &mc_virt SLAVE_EBI1 0>,

Please use QCOM_ICC_TAG_ALWAYS.

> +					<&gem_noc MASTER_APPSS_PROC 0 &config_noc SLAVE_PCIE_0 0>;

And this path could presumably be demoted to QCOM_ICC_TAG_ACTIVE_ONLY?

Konrad