On 15/08/2023 14:26, Krishna chaitanya chundru wrote:
> PCIe needs to choose the appropriate performance state of RPMH power
> domain based upon the PCIe gen speed.
This explanation should be also in bindings patch, otherwise why would
we consider the bindings patch?
>
> So, let's add the OPP table support to specify RPMH performance states.
>
> Signed-off-by: Krishna chaitanya chundru <quic_krichai@xxxxxxxxxxx>
> ---
> arch/arm64/boot/dts/qcom/sm8450.dtsi | 47 ++++++++++++++++++++++++++++++++++++
> 1 file changed, 47 insertions(+)
>
> diff --git a/arch/arm64/boot/dts/qcom/sm8450.dtsi b/arch/arm64/boot/dts/qcom/sm8450.dtsi
> index 595533a..681ea9c 100644
> --- a/arch/arm64/boot/dts/qcom/sm8450.dtsi
> +++ b/arch/arm64/boot/dts/qcom/sm8450.dtsi
> @@ -381,6 +381,49 @@
> };
> };
>
> + pcie0_opp_table: opp-table-pcie0 {
> + compatible = "operating-points-v2";
> +
> + opp-2500000 {
> + opp-hz = /bits/ 64 <2500000>;
> + opp-level = <RPMH_REGULATOR_LEVEL_LOW_SVS>;
> + };
> +
> + opp-5000000 {
> + opp-hz = /bits/ 64 <5000000>;
> + opp-level = <RPMH_REGULATOR_LEVEL_LOW_SVS>;
> + };
> +
> + opp-8000000 {
> + opp-hz = /bits/ 64 <8000000>;
> + opp-level = <RPMH_REGULATOR_LEVEL_LOW_SVS>;
> + };
> + };
> +
> + pcie1_opp_table: opp-table-pcie1 {
> + compatible = "operating-points-v2";
> +
> + opp-2500000 {
> + opp-hz = /bits/ 64 <2500000>;
> + opp-level = <RPMH_REGULATOR_LEVEL_LOW_SVS>;
> + };
> +
> + opp-5000000 {
> + opp-hz = /bits/ 64 <5000000>;
> + opp-level = <RPMH_REGULATOR_LEVEL_LOW_SVS>;
> + };
> +
> + opp-8000000 {
> + opp-hz = /bits/ 64 <8000000>;
> + opp-level = <RPMH_REGULATOR_LEVEL_LOW_SVS>;
> + };
> +
> + opp-16000000 {
> + opp-hz = /bits/ 64 <16000000>;
> + opp-level = <RPMH_REGULATOR_LEVEL_NOM>;
> + };
> + };
> +
> reserved_memory: reserved-memory {
> #address-cells = <2>;
> #size-cells = <2>;
> @@ -1803,6 +1846,8 @@
> pinctrl-names = "default";
> pinctrl-0 = <&pcie0_default_state>;
>
> + operating-points-v2 = <&pcie0_opp_table>;
Why the table is not here? Is it shared with multiple devices?
Best regards,
Krzysztof
