linux-kernel - Re: [linux-sunxi] [PATCH 02/11] arm64: allwinner: a64: add NMI controller on A64

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Message-ID: <CAGb2v672Z2JedGF3n+8Hi78QG_hAxz0ZYXaCkw0GAkA3xEdKrA@mail.gmail.com>
Date:   Wed, 5 Apr 2017 14:20:31 +0800
From:   Chen-Yu Tsai <wens@...e.org>
To:     Maxime Ripard <maxime.ripard@...e-electrons.com>
Cc:     Chen-Yu Tsai <wens@...e.org>, Icenowy Zheng <icenowy@...c.io>,
        Lee Jones <lee.jones@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        Liam Girdwood <lgirdwood@...il.com>,
        devicetree <devicetree@...r.kernel.org>,
        linux-sunxi <linux-sunxi@...glegroups.com>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>
Subject: Re: [linux-sunxi] [PATCH 02/11] arm64: allwinner: a64: add NMI
 controller on A64

On Wed, Apr 5, 2017 at 2:11 PM, Maxime Ripard
<maxime.ripard@...e-electrons.com> wrote:
> On Wed, Apr 05, 2017 at 11:51:45AM +0800, Chen-Yu Tsai wrote:
>> On Wed, Apr 5, 2017 at 2:01 AM, Icenowy Zheng <icenowy@...c.io> wrote:
>> > Allwinner A64 SoC features a NMI controller, which is usually connected
>> > to the AXP PMIC.
>> >
>> > Add support for it.
>> >
>> > Signed-off-by: Icenowy Zheng <icenowy@...c.io>
>>
>> This might not be the best representation of the R_INTC block. Though
>> we'd need to change it for all SoCs if we want to be accurate. For now,
>
> What do you think would be a good representation?

My gut feeling is that this is the old INTC from sun4/5i. It's supposed
to be the interrupt controller for the embedded low power core. I've not
done a thorough comparison though.

ChenYu