Merge "dt-bindings: Add documentation for rpm master stats"

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 */
+	}
+}

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>;
+	};
+

qcom/holi.dtsi

@@ -482,6 +482,13 @@
 		qcom,wakeup-enable;
 	};
 
+	rpm_bus: qcom,rpm-smd {
+		compatible = "qcom,rpm-smd";
+		rpm-channel-name = "rpm_requests";
+		interrupts = <GIC_SPI 194 IRQ_TYPE_EDGE_RISING>;
+		rpm-channel-type = <15>; /* SMD_APPS_RPM */
+	};
+
 	ipcc_mproc: qcom,ipcc@208000 {
 		compatible = "qcom,ipcc";
 		reg = <0x208000 0x1000>;