Re: [PATCH 5/5] arm64: dts: qcom: sc8280xp: Add OPP table for CCI hosts

Bryan O'Donoghue
2025-09-04T14:56:39Z

On 04/09/2025 15:31, Konrad Dybcio wrote:
> From: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
>
> The CCI hosts have both frequency and voltage requirements (which
> happen to be common across instances on a given SoC, at least so far).
>
> Express them by introducing an OPP table and linking it to the hosts.
>
> Signed-off-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
> ---
> arch/arm64/boot/dts/qcom/sc8280xp.dtsi | 14 ++++++++++++++
> 1 file changed, 14 insertions(+)
>
> diff --git a/arch/arm64/boot/dts/qcom/sc8280xp.dtsi b/arch/arm64/boot/dts/qcom/sc8280xp.dtsi
> index 18b5cb441f955f7a91204376e05536b203f3e28b..c396186317d49f411d7162771a358563329a02a4 100644
> --- a/arch/arm64/boot/dts/qcom/sc8280xp.dtsi
> +++ b/arch/arm64/boot/dts/qcom/sc8280xp.dtsi
> @@ -391,6 +391,15 @@ memory@80000000 {
> reg = <0x0 0x80000000 0x0 0x0>;
> };
>
> + cci_opp_table: opp-table-cci {
> + compatible = "operating-points-v2";
> +
> + opp-37500000 {
> + opp-hz = /bits/ 64 <37500000>;
> + required-opps = <&rpmhpd_opp_low_svs>;
> + };
> + };
> +
> cpu0_opp_table: opp-table-cpu0 {
> compatible = "operating-points-v2";
> opp-shared;
> @@ -4181,6 +4190,7 @@ cci0: cci@ac4a000 {
> "cpas_ahb",
> "cci";
>
> + operating-points-v2 = <&cci_opp_table>;
> power-domains = <&camcc TITAN_TOP_GDSC>;
>
> pinctrl-0 = <&cci0_default>;
> @@ -4222,6 +4232,7 @@ cci1: cci@ac4b000 {
> "cpas_ahb",
> "cci";
>
> + operating-points-v2 = <&cci_opp_table>;
> power-domains = <&camcc TITAN_TOP_GDSC>;
>
> pinctrl-0 = <&cci1_default>;
> @@ -4262,6 +4273,8 @@ cci2: cci@ac4c000 {
> "slow_ahb_src",
> "cpas_ahb",
> "cci";
> +
> + operating-points-v2 = <&cci_opp_table>;
> power-domains = <&camcc TITAN_TOP_GDSC>;
>
> pinctrl-0 = <&cci2_default>;
> @@ -4303,6 +4316,7 @@ cci3: cci@ac4d000 {
> "cpas_ahb",
> "cci";
>
> + operating-points-v2 = <&cci_opp_table>;
> power-domains = <&camcc TITAN_TOP_GDSC>;
>
> pinctrl-0 = <&cci3_default>;
>
Reviewed-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>