Add new binding for OMAP PRM (Power and Reset Manager) instances. Each
of these will act as a power domain controller and potentially as a reset
provider.
Signed-off-by: Tero Kristo <t-kristo@xxxxxx>
---
v4:
- renamed nodes as power-controller
- added documentation about hierarchy
.../devicetree/bindings/arm/omap/prm-inst.txt | 31 +++++++++++++++++++
1 file changed, 31 insertions(+)
create mode 100644 Documentation/devicetree/bindings/arm/omap/prm-inst.txt
diff --git a/Documentation/devicetree/bindings/arm/omap/prm-inst.txt b/Documentation/devicetree/bindings/arm/omap/prm-inst.txt
new file mode 100644
index 000000000000..7c7527c37734
--- /dev/null
+++ b/Documentation/devicetree/bindings/arm/omap/prm-inst.txt
@@ -0,0 +1,35 @@
+OMAP PRM instance bindings
+
+Power and Reset Manager is an IP block on OMAP family of devices which
+handle the power domains and their current state, and provide reset
+handling for the domains and/or separate IP blocks under the power domain
+hierarchy. A PRM instance node must be a child of a PRM node [1].
+
+[1] Documentation/devicetree/bindings/arm/omap/prcm.txt
+
+Required properties:
+- compatible: Must be one of:
+ "ti,am3-prm-inst"
+ "ti,am4-prm-inst"
+ "ti,omap4-prm-inst"
+ "ti,omap5-prm-inst"
+ "ti,dra7-prm-inst"
+- reg: Contains PRM instance register address range
+ (base address and length)
+
+Optional properties:
+- #reset-cells: Should be 1 if the PRM instance in question supports resets.
+- clocks: Associated clocks for the reset signals if any. Certain reset
+ signals can't be toggled properly without functional clock
+ being active for them.
+
+Example:
+
+&prm {
+ prm_dsp2: power-controller@1b00 {
+ compatible = "ti,dra7-prm-inst";
+ reg = <0x1b00 0x40>;
+ #reset-cells = <1>;
+ clocks = <&dsp2_clkctrl DRA7_DSP2_MMU0_DSP2_CLKCTRL 0>;
+ };
+};
--
2.17.1
--
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