Documentation/devicetree/bindings/powerpc/fsl/mpic-timer.txt

Source file repositories/reference/linux-study-clean/Documentation/devicetree/bindings/powerpc/fsl/mpic-timer.txt

File Facts

System
Linux kernel
Corpus path
Documentation/devicetree/bindings/powerpc/fsl/mpic-timer.txt
Extension
.txt
Size
1166 bytes
Lines
39
Domain
Support Tooling And Documentation
Bucket
Documentation
Inferred role
Support Tooling And Documentation: documentation
Status
atlas-only

Why This File Exists

Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.

Dependency Surface

Detected Declarations

Annotated Snippet

Required properties:
- compatible: "fsl,mpic-global-timer"

- reg : Contains two regions.  The first is the main timer register bank
  (GTCCRxx, GTBCRxx, GTVPRxx, GTDRxx).  The second is the timer control
  register (TCRx) for the group.

- fsl,available-ranges: use <start count> style section to define which
  timer interrupts can be used.  This property is optional; without this,
  all timers within the group can be used.

- interrupts: one interrupt per timer in the group, in order, starting
  with timer zero.  If timer-available-ranges is present, only the
  interrupts that correspond to available timers shall be present.

Example:
	/* Note that this requires #interrupt-cells to be 4 */
	timer0: timer@41100 {
		compatible = "fsl,mpic-global-timer";
		reg = <0x41100 0x100 0x41300 4>;

		/* Another AMP partition is using timers 0 and 1 */
		fsl,available-ranges = <2 2>;

		interrupts = <2 0 3 0
		              3 0 3 0>;
	};

	timer1: timer@42100 {
		compatible = "fsl,mpic-global-timer";
		reg = <0x42100 0x100 0x42300 4>;
		interrupts = <4 0 3 0
		              5 0 3 0
		              6 0 3 0
		              7 0 3 0>;
	};

Annotation

Implementation Notes