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author | qctecmdr <qctecmdr@localhost> | 2019-09-16 01:36:00 -0700 |
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committer | Gerrit - the friendly Code Review server <code-review@localhost> | 2019-09-16 01:36:00 -0700 |
commit | bc34db6acc31f933735aaa02e560bc2744dfda49 (patch) | |
tree | 57e5f8fb4e66c2cda500d99230b2724fe4914fa8 /bindings/arm | |
parent | 966f576f0d2c0c6251bddd65717f8092365c88a2 (diff) | |
parent | 9f31fb0d5dfe283745c0558525fd35318bbe29a5 (diff) | |
download | devicetree-bc34db6acc31f933735aaa02e560bc2744dfda49.tar.gz |
Merge "ARM: dts: msm: Add rpm-smd node for bengal"
Diffstat (limited to 'bindings/arm')
-rw-r--r-- | bindings/arm/msm/rpm-smd.txt | 40 | ||||
-rw-r--r-- | bindings/arm/msm/rpm_master_stats.txt | 47 |
2 files changed, 87 insertions, 0 deletions
diff --git a/bindings/arm/msm/rpm-smd.txt b/bindings/arm/msm/rpm-smd.txt new file mode 100644 index 00000000..79968810 --- /dev/null +++ b/bindings/arm/msm/rpm-smd.txt @@ -0,0 +1,40 @@ +Resource Power Manager(RPM) + +RPM is a dedicated hardware engine for managing shared SoC resources, +which includes buses, clocks, power rails, etc. The goal of RPM is +to achieve the maximum power savings while satisfying the SoC's +operational and performance requirements. RPM accepts resource +requests from multiple RPM masters. It arbitrates and aggregates +the requests, and configures the shared resources. The RPM masters +are the application processor, the modem processor, as well as hardware +accelerators. The RPM driver communicates with the hardware engine using +SMD. + +The devicetree representation of the RPM block should be: + +Required properties + +- compatible: "qcom,rpm-smd" +- rpm-channel-name: The string corresponding to the channel name of the + peripheral subsystem. Required for both smd and + glink transports. +- rpm-channel-type: The interal SMD edge for this subsystem found in + <soc/qcom/smd.h> +- interrupts: The IRQ used by remote processor to inform APSS about + reception of response message packet. + +Optional properties +- rpm-standalone: Allow RPM driver to run in standalone mode irrespective of RPM + channel presence. +- reg: Contains the memory address at which rpm messaging format version is + stored. If this field is not present, the target only supports v0 format. + +Example: + + qcom,rpm-smd { + compatible = "qcom,rpm-smd"; + interrupts = <GIC_SPI 194 IRQ_TYPE_EDGE_RISING>; + qcom,rpm-channel-name = "rpm_requests"; + qcom,rpm-channel-type = 15; /* APPS_RPM_SMD */ + } +} diff --git a/bindings/arm/msm/rpm_master_stats.txt b/bindings/arm/msm/rpm_master_stats.txt new file mode 100644 index 00000000..cfc6e3ab --- /dev/null +++ b/bindings/arm/msm/rpm_master_stats.txt @@ -0,0 +1,47 @@ +* RPM Stats + +RPM maintains a counter of the masters i.e APPS, MPPS etc +number of times the SoC entered a deeper sleep mode involving +lowering or powering down the backbone rails - Cx and Mx and +the oscillator clock, XO. + +PROPERTIES + +- compatible: + Usage: required + Value type: <string> + Definition: Should be "qcom,rpm-master-stats". + +- reg: + Usage: required + Value type: <prop-encoded-array> + Definition: The address on the RPM RAM from where the stats are read + should be provided as "phys_addr_base". The offset + from which the stats are available should be provided as + "offset_addr". + +- reg-names: + Usage: required + Value type: <prop-encoded-array> + Definition: Provides labels for the reg property. + +- qcom,masters: + Usage: required + Value tye: <string list> + Defination: Provides the masters list. + +qcom,master-offset: + Usage: required + Value tye: <prop-encoded-array> + Defination: Provides the masters list + +EXAMPLE: + +qcom,rpm-master-stats@60150 { + compatible = "qcom,rpm-master-stats"; + reg = <0x45f0150 0x5000>; + qcom,masters = "APSS", "MPSS", "ADSP", "CDSP", "TZ"; + qcom,master-stats-version = <2>; + qcom,master-offset = <4096>; + }; + |