[PATCHv4 01/10] dt-bindings: omap: add new binding for PRM instances

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



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

--
Texas Instruments Finland Oy, Porkkalankatu 22, 00180 Helsinki. Y-tunnus/Business ID: 0615521-4. Kotipaikka/Domicile: Helsinki



[Index of Archives]     [Linux Arm (vger)]     [ARM Kernel]     [ARM MSM]     [Linux Tegra]     [Linux WPAN Networking]     [Linux Wireless Networking]     [Maemo Users]     [Linux USB Devel]     [Video for Linux]     [Linux Audio Users]     [Yosemite Trails]     [Linux Kernel]     [Linux SCSI]

  Powered by Linux