diff options
| -rw-r--r-- | Documentation/devicetree/bindings/arm/arch_timer.txt | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/Documentation/devicetree/bindings/arm/arch_timer.txt b/Documentation/devicetree/bindings/arm/arch_timer.txt index 256b4d8bab7b..e774128935d5 100644 --- a/Documentation/devicetree/bindings/arm/arch_timer.txt +++ b/Documentation/devicetree/bindings/arm/arch_timer.txt | |||
| @@ -17,7 +17,10 @@ to deliver its interrupts via SPIs. | |||
| 17 | - interrupts : Interrupt list for secure, non-secure, virtual and | 17 | - interrupts : Interrupt list for secure, non-secure, virtual and |
| 18 | hypervisor timers, in that order. | 18 | hypervisor timers, in that order. |
| 19 | 19 | ||
| 20 | - clock-frequency : The frequency of the main counter, in Hz. Optional. | 20 | - clock-frequency : The frequency of the main counter, in Hz. Should be present |
| 21 | only where necessary to work around broken firmware which does not configure | ||
| 22 | CNTFRQ on all CPUs to a uniform correct value. Use of this property is | ||
| 23 | strongly discouraged; fix your firmware unless absolutely impossible. | ||
| 21 | 24 | ||
| 22 | - always-on : a boolean property. If present, the timer is powered through an | 25 | - always-on : a boolean property. If present, the timer is powered through an |
| 23 | always-on power domain, therefore it never loses context. | 26 | always-on power domain, therefore it never loses context. |
| @@ -46,7 +49,8 @@ Example: | |||
| 46 | 49 | ||
| 47 | - compatible : Should at least contain "arm,armv7-timer-mem". | 50 | - compatible : Should at least contain "arm,armv7-timer-mem". |
| 48 | 51 | ||
| 49 | - clock-frequency : The frequency of the main counter, in Hz. Optional. | 52 | - clock-frequency : The frequency of the main counter, in Hz. Should be present |
| 53 | only when firmware has not configured the MMIO CNTFRQ registers. | ||
| 50 | 54 | ||
| 51 | - reg : The control frame base address. | 55 | - reg : The control frame base address. |
| 52 | 56 | ||