Subject: [PATCH 5/5] ARM: dts: OMAP5: Specify nonsecure PPI IRQ for arch timer

From: [email-masked] (Santosh Shilimkar)
Date: Sat, 19 Jan 2013 00:21:22 +0530

On Friday 18 January 2013 10:38 PM, Marc Zyngier wrote:
> On 18/01/13 17:00, Santosh Shilimkar wrote:
>> On Friday 18 January 2013 09:32 PM, Marc Zyngier wrote:
>>> On 18/01/13 15:32, Santosh Shilimkar wrote:
>>>> From: Rajendra Nayak <[email-masked]>
>>>>
>>>> Specify both secure as well as nonsecure PPI IRQ for arch
>>>> timer. This fixes the following errors seen on DT OMAP5 boot..
>>>>
>>>> [    0.000000] arch_timer: No interrupt available, giving up
>>>>
>>>> Cc: Benoit Cousson <[email-masked]>
>>>>
>>>> Signed-off-by: Rajendra Nayak <[email-masked]>
>>>> Signed-off-by: Santosh Shilimkar <[email-masked]>
>>>> ---
>>>>    arch/arm/boot/dts/omap5.dtsi |   16 ++++++++++++----
>>>>    1 file changed, 12 insertions(+), 4 deletions(-)
>>>>
>>>> diff --git a/arch/arm/boot/dts/omap5.dtsi b/arch/arm/boot/dts/omap5.dtsi
>>>> index 790bb2a..7a78d1b 100644
>>>> --- a/arch/arm/boot/dts/omap5.dtsi
>>>> +++ b/arch/arm/boot/dts/omap5.dtsi
>>>> @@ -35,8 +35,12 @@
>>>>    			compatible = "arm,cortex-a15";
>>>>    			timer {
>>>>    				compatible = "arm,armv7-timer";
>>>> -				/* 14th PPI IRQ, active low level-sensitive */
>>>> -				interrupts = <1 14 0x308>;
>>>> +				/*
>>>> +				 * PPI secure/nonsecure IRQ,
>>>> +				 * active low level-sensitive
>>>> +				 */
>>>> +				interrupts = <1 13 0x308>,
>>>> +					     <1 14 0x308>;
>>>
>>> Care to add the virtual and HYP timer interrupts? So KVM can get a
>>> chance to run on this HW...
>>>
>> Thanks Marc for spotting it. Will take care of it.
>
> I just realised something silly... You have one timer node *per cpu*,
> and this is not really expected.
>
This was discussed on the list here [1]
Benoit suggested to add per CPU node since arch timer is per
CPU and DT should describe the hw the way it is. Did we miss
something ?

> The driver really wants one single node. See
> arch/arm/boot/dts/vexpress-v2p-ca15_a7.dts for an example.
>
I remember adding only one node based on above file and then
updating the patch based on the comment.

> Oh, and your GIC node could do with some updating too (no VGIC regs or
> interrupt).
>
Will have a look at that as well.

Regards
Santosh,

[1] https://patchwork.kernel.org/patch/1312061/