diff options
Diffstat (limited to 'Documentation/devicetree')
| -rw-r--r-- | Documentation/devicetree/bindings/opp/opp.txt | 3 | ||||
| -rw-r--r-- | Documentation/devicetree/bindings/power/qcom,rpmpd.txt | 145 | ||||
| -rw-r--r-- | Documentation/devicetree/bindings/soc/qcom/qcom,smd-rpm.txt | 1 |
3 files changed, 149 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/opp/opp.txt b/Documentation/devicetree/bindings/opp/opp.txt index c396c4c0af92..76b6c79604a5 100644 --- a/Documentation/devicetree/bindings/opp/opp.txt +++ b/Documentation/devicetree/bindings/opp/opp.txt @@ -129,6 +129,9 @@ Optional properties: - opp-microamp-<name>: Named opp-microamp property. Similar to opp-microvolt-<name> property, but for microamp instead. +- opp-level: A value representing the performance level of the device, + expressed as a 32-bit integer. + - clock-latency-ns: Specifies the maximum possible transition latency (in nanoseconds) for switching to this OPP from any other OPP. diff --git a/Documentation/devicetree/bindings/power/qcom,rpmpd.txt b/Documentation/devicetree/bindings/power/qcom,rpmpd.txt new file mode 100644 index 000000000000..980e5413d18f --- /dev/null +++ b/Documentation/devicetree/bindings/power/qcom,rpmpd.txt @@ -0,0 +1,145 @@ +Qualcomm RPM/RPMh Power domains + +For RPM/RPMh Power domains, we communicate a performance state to RPM/RPMh +which then translates it into a corresponding voltage on a rail + +Required Properties: + - compatible: Should be one of the following + * qcom,msm8996-rpmpd: RPM Power domain for the msm8996 family of SoC + * qcom,sdm845-rpmhpd: RPMh Power domain for the sdm845 family of SoC + - #power-domain-cells: number of cells in Power domain specifier + must be 1. + - operating-points-v2: Phandle to the OPP table for the Power domain. + Refer to Documentation/devicetree/bindings/power/power_domain.txt + and Documentation/devicetree/bindings/opp/opp.txt for more details + +Refer to <dt-bindings/power/qcom-rpmpd.h> for the level values for +various OPPs for different platforms as well as Power domain indexes + +Example: rpmh power domain controller and OPP table + +#include <dt-bindings/power/qcom-rpmhpd.h> + +opp-level values specified in the OPP tables for RPMh power domains +should use the RPMH_REGULATOR_LEVEL_* constants from +<dt-bindings/power/qcom-rpmhpd.h> + + rpmhpd: power-controller { + compatible = "qcom,sdm845-rpmhpd"; + #power-domain-cells = <1>; + operating-points-v2 = <&rpmhpd_opp_table>; + + rpmhpd_opp_table: opp-table { + compatible = "operating-points-v2"; + + rpmhpd_opp_ret: opp1 { + opp-level = <RPMH_REGULATOR_LEVEL_RETENTION>; + }; + + rpmhpd_opp_min_svs: opp2 { + opp-level = <RPMH_REGULATOR_LEVEL_MIN_SVS>; + }; + + rpmhpd_opp_low_svs: opp3 { + opp-level = <RPMH_REGULATOR_LEVEL_LOW_SVS>; + }; + + rpmhpd_opp_svs: opp4 { + opp-level = <RPMH_REGULATOR_LEVEL_SVS>; + }; + + rpmhpd_opp_svs_l1: opp5 { + opp-level = <RPMH_REGULATOR_LEVEL_SVS_L1>; + }; + + rpmhpd_opp_nom: opp6 { + opp-level = <RPMH_REGULATOR_LEVEL_NOM>; + }; + + rpmhpd_opp_nom_l1: opp7 { + opp-level = <RPMH_REGULATOR_LEVEL_NOM_L1>; + }; + + rpmhpd_opp_nom_l2: opp8 { + opp-level = <RPMH_REGULATOR_LEVEL_NOM_L2>; + }; + + rpmhpd_opp_turbo: opp9 { + opp-level = <RPMH_REGULATOR_LEVEL_TURBO>; + }; + + rpmhpd_opp_turbo_l1: opp10 { + opp-level = <RPMH_REGULATOR_LEVEL_TURBO_L1>; + }; + }; + }; + +Example: rpm power domain controller and OPP table + + rpmpd: power-controller { + compatible = "qcom,msm8996-rpmpd"; + #power-domain-cells = <1>; + operating-points-v2 = <&rpmpd_opp_table>; + + rpmpd_opp_table: opp-table { + compatible = "operating-points-v2"; + + rpmpd_opp_low: opp1 { + opp-level = <1>; + }; + + rpmpd_opp_ret: opp2 { + opp-level = <2>; + }; + + rpmpd_opp_svs: opp3 { + opp-level = <3>; + }; + + rpmpd_opp_normal: opp4 { + opp-level = <4>; + }; + + rpmpd_opp_high: opp5 { + opp-level = <5>; + }; + + rpmpd_opp_turbo: opp6 { + opp-level = <6>; + }; + }; + }; + +Example: Client/Consumer device using OPP table + + leaky-device0@12350000 { + compatible = "foo,i-leak-current"; + reg = <0x12350000 0x1000>; + power-domains = <&rpmhpd SDM845_MX>; + operating-points-v2 = <&leaky_opp_table>; + }; + + + leaky_opp_table: opp-table { + compatible = "operating-points-v2"; + + opp1 { + opp-hz = /bits/ 64 <144000>; + required-opps = <&rpmhpd_opp_low>; + }; + + opp2 { + opp-hz = /bits/ 64 <400000>; + required-opps = <&rpmhpd_opp_ret>; + }; + + opp3 { + opp-hz = /bits/ 64 <20000000>; + required-opps = <&rpmpd_opp_svs>; + }; + + opp4 { + opp-hz = /bits/ 64 <25000000>; + required-opps = <&rpmpd_opp_normal>; + }; + }; diff --git a/Documentation/devicetree/bindings/soc/qcom/qcom,smd-rpm.txt b/Documentation/devicetree/bindings/soc/qcom/qcom,smd-rpm.txt index ec95705ba692..f3fa313963d5 100644 --- a/Documentation/devicetree/bindings/soc/qcom/qcom,smd-rpm.txt +++ b/Documentation/devicetree/bindings/soc/qcom/qcom,smd-rpm.txt @@ -23,6 +23,7 @@ resources. "qcom,rpm-msm8916" "qcom,rpm-msm8974" "qcom,rpm-msm8998" + "qcom,rpm-sdm660" "qcom,rpm-qcs404" - qcom,smd-channels: |