[PATCH 2/3] arm64: dts: qcom: sa8775p: Add interconnect to PCIe SMMU

[Krzysztof Kozlowski]

On 09/06/2023 07:41, Parikshit Pareek wrote:
> Introduce the interconnect, connecting PCIe SMMU to the memory. This
> is accessed during memory mapped IO access of smmu registers, and
> during page table walks.
> 
> Reported-by: Eric Chanudet <echanude at redhat.com>
> Signed-off-by: Parikshit Pareek <quic_ppareek at quicinc.com>
> ---
>  arch/arm64/boot/dts/qcom/sa8775p.dtsi | 4 ++++
>  1 file changed, 4 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/qcom/sa8775p.dtsi b/arch/arm64/boot/dts/qcom/sa8775p.dtsi
> index b130136acffe..ea3c37019c46 100644
> --- a/arch/arm64/boot/dts/qcom/sa8775p.dtsi
> +++ b/arch/arm64/boot/dts/qcom/sa8775p.dtsi
> @@ -2137,6 +2137,10 @@
>  				     <GIC_SPI 639 IRQ_TYPE_LEVEL_HIGH>,
>  				     <GIC_SPI 79 IRQ_TYPE_LEVEL_HIGH>,
>  				     <GIC_SPI 640 IRQ_TYPE_LEVEL_HIGH>;
> +			interconnects = <&pcie_anoc MASTER_PCIE_0 QCOM_ICC_TAG_ALWAYS
> +					&mc_virt SLAVE_EBI1 QCOM_ICC_TAG_ALWAYS>;
> +			interconnect-names = "tbu_mc";
> +			icc_bw = <250>;

Why 250? Why it cannot change during system run depending on the needs?


Best regards,
Krzysztof