linux-kernel - Re: [PATCH] irqchip/irq-mst: Use ARCH_MSTARV7 as default value for MST

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Date:   Wed, 9 Jun 2021 01:52:37 +0800
From:   Mark-PK Tsai <mark-pk.tsai@...iatek.com>
To:     <matthias.bgg@...il.com>
CC:     <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>,
        <linux-mediatek@...ts.infradead.org>, <mark-pk.tsai@...iatek.com>,
        <maz@...nel.org>, <tglx@...utronix.de>, <yj.chiang@...iatek.com>
Subject: Re: [PATCH] irqchip/irq-mst: Use ARCH_MSTARV7 as default value for MST_IRQ



> On 07/06/2021 05:59, Mark-PK Tsai wrote:
> > Only TV SoCs of Mediatek products have this controller
> > which inherit from MStar TV SoCs.
> > Don't enable it by default if ARCH_MEDIATEK is selected.
> > Instead, use ARCH_MSTARV7 as default value.
> > 
> > Signed-off-by: Mark-PK Tsai <mark-pk.tsai@...iatek.com>
> > ---
> >  drivers/irqchip/Kconfig | 2 +-
> >  1 file changed, 1 insertion(+), 1 deletion(-)
> > 
> > diff --git a/drivers/irqchip/Kconfig b/drivers/irqchip/Kconfig
> > index 62543a4eccc0..30f578e18a11 100644
> > --- a/drivers/irqchip/Kconfig
> > +++ b/drivers/irqchip/Kconfig
> > @@ -576,7 +576,7 @@ config LOONGSON_PCH_MSI
> >  config MST_IRQ
> >  	bool "MStar Interrupt Controller"
> >  	depends on ARCH_MEDIATEK || ARCH_MSTARV7 || COMPILE_TEST
> 
> We should also delete ARCH_MEDIATEK dependency.

Actually what I want to do is decouple the MST_IRQ from
ARCH_MEDIATEK, because there are only TV SoCs have this.
But if I remove the ARCH_MEDIATEK dependency, then all the
Mediatek TV SoCs kernel have to select ARCH_MSTARV7 too.
It's kind of weird.

Though it may ask some Mediatek users about MST_IRQ,
I just change the default config to prevent that all
the Mediatek kernel include this driver by default.

What would you suggest for this?

> 
> Regards,
> Matthias
> 
> > -	default ARCH_MEDIATEK
> > +	default ARCH_MSTARV7
> >  	select IRQ_DOMAIN
> >  	select IRQ_DOMAIN_HIERARCHY
> >  	help
> > 
>