Re: [PATCH v5 2/5] arm64: dts: qcom: sm8450: Add opp table support to PCIe

[Konrad Dybcio]

On 7.09.2023 08:00, Krishna chaitanya chundru wrote:
> PCIe needs to choose the appropriate performance state of RPMH power
> domain based up on the PCIe gen speed.
> 
> So let's add the OPP table support to specify RPMH performance states.
> 
> Use opp-level for the PCIe gen speed for easier use.
> 
> Signed-off-by: Krishna chaitanya chundru <quic_krichai@xxxxxxxxxxx>
> ---
[...]

> +
> +			pcie1_opp_table: opp-table {
> +				compatible = "operating-points-v2";
> +
> +				opp-1 {
> +					opp-level = <1>;
> +					required-opps = <&rpmhpd_opp_low_svs>;
> +				};
> +
> +				opp-2 {
> +					opp-level = <2>;
> +					required-opps = <&rpmhpd_opp_low_svs>;
> +				};
> +
> +				opp-3 {
> +					opp-level = <3>;
> +					required-opps = <&rpmhpd_opp_low_svs>;
Is gen3 not supposed to require nom like on pcie0?

Also, can all non-maximum OPPs run at just low_svs?

Konrad