Re: [PATCH 1/6] ARM: integrator: get the LM interrupts from DT

Re: [PATCH 1/6] ARM: integrator: get the LM interrupts from DT

[Mark Rutland]

[adding devicetree to Cc]

Hi Linus,

I missed this because I was neither Cc'd directly or through the
devicetree list. Please Cc devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org for DT patches in
future.

On Thu, Oct 03, 2013 at 05:02:57PM +0100, Linus Walleij wrote:
> The OF/DT boot path needs to get the LM (Logical Module)
> IRQs from the device tree for coherency. This augments the
> DT syscon node to contain these IRQs and alter the DT LM
> code to get them from there.
> 
> Signed-off-by: Linus Walleij <linus.walleij-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>
> ---
>  Documentation/devicetree/bindings/arm/arm-boards | 20 ++++++++++++++++++++
>  arch/arm/boot/dts/integratorap.dts               |  3 +++
>  arch/arm/mach-integrator/integrator_ap.c         |  2 +-
>  3 files changed, 24 insertions(+), 1 deletion(-)
> 
> diff --git a/Documentation/devicetree/bindings/arm/arm-boards b/Documentation/devicetree/bindings/arm/arm-boards
> index db5858e..06e5370 100644
> --- a/Documentation/devicetree/bindings/arm/arm-boards
> +++ b/Documentation/devicetree/bindings/arm/arm-boards
> @@ -9,9 +9,29 @@ Required properties (in root node):
>  
>  FPGA type interrupt controllers, see the versatile-fpga-irq binding doc.
>  
> +Required nodes:
> +
>  In the root node the Integrator/CP must have a /cpcon node pointing
>  to the CP control registers, and the Integrator/AP must have a
>  /syscon node pointing to the Integrator/AP system controller.
> +The AP syscon node must include the logical module interrupts,

s/logical/logic/ (and below)

> +example:
> +
> +/dts-v1/;
> +/include/ "integrator.dtsi"
> +
> +/ {
> +	model = "ARM Integrator/AP";
> +	compatible = "arm,integrator-ap";
> +
> +	syscon {
> +		/* AP system controller registers */
> +		reg = <0x11000000 0x100>;
> +		interrupt-parent = <&pic>;
> +		/* These are the logical module IRQs */
> +		interrupts = <9 10 11 12>;

What order are these interrupts in? I assume ascending, starting at
module 0, but it would be nice to state that.

Also, could you please bracket entries in lists individually? It makes
it easy to read lists of composite values (interrupts, clocks, dmas),
regardless of how many cells an entry takes:

		interrupts = <9>, <10>, <11>, <12>;

> +	};
> +};
>  
>  
>  ARM Versatile Application and Platform Baseboards
> diff --git a/arch/arm/boot/dts/integratorap.dts b/arch/arm/boot/dts/integratorap.dts
> index b6b82ec..7c8925f 100644
> --- a/arch/arm/boot/dts/integratorap.dts
> +++ b/arch/arm/boot/dts/integratorap.dts
> @@ -21,6 +21,9 @@
>  	syscon {
>  		/* AP system controller registers */
>  		reg = <0x11000000 0x100>;
> +		interrupt-parent = <&pic>;
> +		/* These are the logical module IRQs */
> +		interrupts = <9 10 11 12>;

Same here.

Otherwise, this looks ok to me.

Cheers,
Mark.

>  	};
>  
>  	timer0: timer@13000000 {
> diff --git a/arch/arm/mach-integrator/integrator_ap.c b/arch/arm/mach-integrator/integrator_ap.c
> index d9e95e6..f5fbd8a 100644
> --- a/arch/arm/mach-integrator/integrator_ap.c
> +++ b/arch/arm/mach-integrator/integrator_ap.c
> @@ -541,7 +541,7 @@ static void __init ap_init_of(void)
>  		lmdev->resource.start = 0xc0000000 + 0x10000000 * i;
>  		lmdev->resource.end = lmdev->resource.start + 0x0fffffff;
>  		lmdev->resource.flags = IORESOURCE_MEM;
> -		lmdev->irq = IRQ_AP_EXPINT0 + i;
> +		lmdev->irq = irq_of_parse_and_map(syscon, i);
>  		lmdev->id = i;
>  
>  		lm_device_register(lmdev);
> -- 
> 1.8.3.1
> 
> 
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> 
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