[PATCH v2 05/25] dt-bindings: timer: arm, arch_timer: Add interrupt-names support

Hector Martin
2021-02-15T12:19:39Z

Not all platforms provide the same set of timers/interrupts, and Linux
only needs one (plus kvm/guest ones); some platforms are working around
this by using dummy fake interrupts. Implementing interrupt-names allows
the devicetree to specify an arbitrary set of available interrupts, so
the timer code can pick the right one.

This also adds the hyp-virt timer/interrupt, which was previously not
expressed in the fixed 4-interrupt form.

Signed-off-by: Hector Martin <marcan@marcan.st>
---
.../devicetree/bindings/timer/arm,arch_timer.yaml | 14 ++++++++++++++
1 file changed, 14 insertions(+)

diff --git a/Documentation/devicetree/bindings/timer/arm,arch_timer.yaml b/Documentation/devicetree/bindings/timer/arm,arch_timer.yaml
index 2c75105c1398..ebe9b0bebe41 100644
--- a/Documentation/devicetree/bindings/timer/arm,arch_timer.yaml
+++ b/Documentation/devicetree/bindings/timer/arm,arch_timer.yaml
@@ -34,11 +34,25 @@ properties:
- arm,armv8-timer

interrupts:
+ minItems: 1
+ maxItems: 5
items:
- description: secure timer irq
- description: non-secure timer irq
- description: virtual timer irq
- description: hypervisor timer irq
+ - description: hypervisor virtual timer irq
+
+ interrupt-names:
+ minItems: 1
+ maxItems: 5
+ items:
+ enum:
+ - phys-secure
+ - phys
+ - virt
+ - hyp-phys
+ - hyp-virt

clock-frequency:
description: The frequency of the main counter, in Hz. Should be present
--
2.30.0