linux-kernel - Re: [PATCH 16/35] ARM: davinci: aintc: move timer-specific irq_set

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Date:   Thu, 7 Feb 2019 17:51:39 +0530
From:   Sekhar Nori <nsekhar@...com>
To:     Bartosz Golaszewski <brgl@...ev.pl>,
        Kevin Hilman <khilman@...nel.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Jason Cooper <jason@...edaemon.net>,
        Marc Zyngier <marc.zyngier@....com>
CC:     <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>,
        Bartosz Golaszewski <bgolaszewski@...libre.com>
Subject: Re: [PATCH 16/35] ARM: davinci: aintc: move timer-specific
 irq_set_handler() out of irq.c

On 31/01/19 7:09 PM, Bartosz Golaszewski wrote:
> From: Bartosz Golaszewski <bgolaszewski@...libre.com>
> 
> I've been unable to figure out exactly why, but it seems that the
> IRQ_TINT1_TINT34 interrupt for timer 1 needs to be handled as a
> level irq, not edge like all others.

Not sure of the history myself. This has been this way since beginning
of DaVinci support in kernel.

> 
> This timer is used by the dsp on dm64* boards only.

This would be T1_TOP in code, which is actually marked as unused. T1_BOT
is the one used for DSPs.

> 
> Let's move the handler setup out of the aintc driver where it's lived
> since the beginning and into the dm64* SoC-specific files where it
> belongs.
> 
> Signed-off-by: Bartosz Golaszewski <bgolaszewski@...libre.com>
> ---
>  arch/arm/mach-davinci/dm644x.c | 4 ++++
>  arch/arm/mach-davinci/dm646x.c | 4 ++++
>  arch/arm/mach-davinci/irq.c    | 1 -

I think this should be done for DM355 too?

Thanks,
Sekhar