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dt-bindings: opp: opp-v2-kryo-cpu: Document named opp-microvolt property

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Document named opp-microvolt property for opp-v2-kryo-cpu schema.
This property is used to declare multiple voltage ranges selected on the
different values read from efuses. The selection is done based on the
speed pvs values and the named opp-microvolt property is selected by the
qcom-cpufreq-nvmem driver.

Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
This commit is contained in:
Christian Marangi 2023-10-13 19:38:52 +02:00 committed by Viresh Kumar
parent 5ea4911359
commit 35e0964e48
1 changed files with 22 additions and 0 deletions
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Documentation/devicetree/bindings/opp/opp-v2-kryo-cpu.yaml
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@ -68,6 +68,12 @@ patternProperties:
6: MSM8996SG, speedbin 2
7-31: unused
Bitmap for IPQ806x SoC:
0: IPQ8062
1: IPQ8064/IPQ8066/IPQ8068
2: IPQ8065/IPQ8069
3-31: unused
Other platforms use bits directly corresponding to speedbin index.
clock-latency-ns: true
@ -262,6 +268,22 @@ examples:
};
};
/* Dummy opp table to give example for named opp-microvolt */
opp-table-2 {
compatible = "operating-points-v2-krait-cpu";
nvmem-cells = <&speedbin_efuse>;
opp-384000000 {
opp-hz = /bits/ 64 <384000000>;
opp-microvolt-speed0-pvs0 = <1000000 950000 1050000>;
opp-microvolt-speed0-pvs1 = <925000 878750 971250>;
opp-microvolt-speed0-pvs2 = <875000 831250 918750>;
opp-microvolt-speed0-pvs3 = <800000 760000 840000>;
opp-supported-hw = <0x7>;
clock-latency-ns = <100000>;
};
};
smem {
compatible = "qcom,smem";
memory-region = <&smem_mem>;