Re: [PATCH 2/3] arm64: dts: qcom: ipq6018: add ipq6000 CPU OPP tables

Dmitry Baryshkov
2024-01-31T12:27:00Z

On Wed, 31 Jan 2024 at 12:23, Chukun Pan <amadeus@jmu.edu.cn> wrote:
>
> Some IPQ6000 SoCs don't have pmic chips, and fused 1.2GHz.
> Add a separate CPU OPP tables for these SoCs.
>
> Signed-off-by: Chukun Pan <amadeus@jmu.edu.cn>
> ---
> arch/arm64/boot/dts/qcom/ipq6000-opp.dtsi | 49 +++++++++++++++++++++++
> 1 file changed, 49 insertions(+)
> create mode 100644 arch/arm64/boot/dts/qcom/ipq6000-opp.dtsi
>
> diff --git a/arch/arm64/boot/dts/qcom/ipq6000-opp.dtsi b/arch/arm64/boot/dts/qcom/ipq6000-opp.dtsi
> new file mode 100644
> index 000000000000..acb4774da33e
> --- /dev/null
> +++ b/arch/arm64/boot/dts/qcom/ipq6000-opp.dtsi
> @@ -0,0 +1,49 @@
> +// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
> +/*
> + * IPQ6000 without PMIC (MP5496) CPU OPP tables
> + */
> +
> +/ {
> + cpu_opp_table: opp-table-cpu {
> + compatible = "operating-points-v2-kryo-cpu";
> + nvmem-cells = <&cpu_speed_bin>;
> + opp-shared;
> +
> + opp-864000000 {
> + opp-hz = /bits/ 64 <864000000>;
> + opp-microvolt = <725000>;
> + opp-supported-hw = <0xf>;
> + clock-latency-ns = <200000>;
> + };
> +
> + opp-1056000000 {
> + opp-hz = /bits/ 64 <1056000000>;
> + opp-microvolt = <787500>;
> + opp-supported-hw = <0xf>;
> + clock-latency-ns = <200000>;
> + };
> +
> + opp-1200000000 {
> + opp-hz = /bits/ 64 <1200000000>;
> + opp-microvolt = <850000>;
> + opp-supported-hw = <0x4>;
> + clock-latency-ns = <200000>;
> + };

I don't see this OPP entry in the existing table. If it is supported
by the SoC, please add it to that table instead.

> + };
> +};
> +
> +&CPU0 {
> + operating-points-v2 = <&cpu_opp_table>;
> +};
> +
> +&CPU1 {
> + operating-points-v2 = <&cpu_opp_table>;
> +};
> +
> +&CPU2 {
> + operating-points-v2 = <&cpu_opp_table>;
> +};
> +
> +&CPU3 {
> + operating-points-v2 = <&cpu_opp_table>;
> +};
> --
> 2.25.1
>
>

--
With best wishes
Dmitry