linux-kernel - Re: [PATCH 07/27] irqchip: Declare cortex-a7's irqchip to initialize gic from dt

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Date:	Thu, 10 Apr 2014 11:04:59 +0100
From:	Marc Zyngier <marc.zyngier@....com>
To:	Chanwoo Choi <cw00.choi@...sung.com>
Cc:	"kgene.kim\@samsung.com" <kgene.kim@...sung.com>,
	"t.figa\@samsung.com" <t.figa@...sung.com>,
	"linux-samsung-soc\@vger.kernel.org" 
	<linux-samsung-soc@...r.kernel.org>,
	"hyunhee.kim\@samsung.com" <hyunhee.kim@...sung.com>,
	"sw0312.kim\@samsung.com" <sw0312.kim@...sung.com>,
	"linux-kernel\@vger.kernel.org" <linux-kernel@...r.kernel.org>,
	"yj44.cho\@samsung.com" <yj44.cho@...sung.com>,
	"inki.dae\@samsung.com" <inki.dae@...sung.com>,
	"kyungmin.park\@samsung.com" <kyungmin.park@...sung.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	"linux-arm-kernel\@lists.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>, mark.rutland@....com
Subject: Re: [PATCH 07/27] irqchip: Declare cortex-a7's irqchip to initialize gic from dt

On Thu, Apr 10 2014 at 10:28:24 am BST, Chanwoo Choi <cw00.choi@...sung.com> wrote:
> This patch declare coretex-a7's irqchip to initialze gic from dt
> with "arm,cortex-a7-gic" data.
>
> Cc: Thomas Gleixner <tglx@...utronix.de>
> Signed-off-by: Chanwoo Choi <cw00.choi@...sung.com>
> Signed-off-by: Kyungmin Park <kyungmin.park@...sung.com>
> ---
>  drivers/irqchip/irq-gic.c | 1 +
>  1 file changed, 1 insertion(+)
>
> diff --git a/drivers/irqchip/irq-gic.c b/drivers/irqchip/irq-gic.c
> index 4300b66..8e906e4 100644
> --- a/drivers/irqchip/irq-gic.c
> +++ b/drivers/irqchip/irq-gic.c
> @@ -1069,6 +1069,7 @@ gic_of_init(struct device_node *node, struct device_node *parent)
>  }
>  IRQCHIP_DECLARE(cortex_a15_gic, "arm,cortex-a15-gic", gic_of_init);
>  IRQCHIP_DECLARE(cortex_a9_gic, "arm,cortex-a9-gic", gic_of_init);
> +IRQCHIP_DECLARE(cortex_a7_gic, "arm,cortex-a7-gic", gic_of_init);
>  IRQCHIP_DECLARE(msm_8660_qgic, "qcom,msm-8660-qgic", gic_of_init);
>  IRQCHIP_DECLARE(msm_qgic2, "qcom,msm-qgic2", gic_of_init);

Frankly, this patch adds no value. Are we going to add
"arm,cortex-a12-gic", "arm,cortex-a17-gic", "arm,cortex-a53-gic",
"arm,cortex-a57-gic"? And that's just to mention the ARM Ltd cores...

Instead, how about defining a generic "arm,gic" property, and mandate
that new DT files are using that? We can always use a more precise
compatible for quirks.

Mark, what do you think? I think this has been discussed in the past
already.

	M.
-- 
Jazz is not dead. It just smells funny.
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