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Re: [PATCH v3 4/9] ARM: dts: sun8i-h3: Add dt node for the syscon control module

Started byMaxime Ripard <maxime.ripard@free-electrons.com>
First post2016-09-12 09:30 +0200
Last post2016-09-13 15:40 +0200
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  Re: [PATCH v3 4/9] ARM: dts: sun8i-h3: Add dt node for the syscon  control module Maxime Ripard <maxime.ripard@free-electrons.com> - 2016-09-12 09:30 +0200
    Re: [PATCH v3 4/9] ARM: dts: sun8i-h3: Add dt node for the syscon  control module LABBE Corentin <clabbe.montjoie@gmail.com> - 2016-09-13 15:40 +0200

#1480966 — Re: [PATCH v3 4/9] ARM: dts: sun8i-h3: Add dt node for the syscon control module

FromMaxime Ripard <maxime.ripard@free-electrons.com>
Date2016-09-12 09:30 +0200
SubjectRe: [PATCH v3 4/9] ARM: dts: sun8i-h3: Add dt node for the syscon control module
Message-ID<sgtQJ-ct-3@gated-at.bofh.it>

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On Fri, Sep 09, 2016 at 02:45:12PM +0200, Corentin Labbe wrote:
> This patch add the dt node for the syscon register present on the
> Allwinner H3.
> 
> Only two register are present in this syscon and the only one useful is
> the one dedicated to EMAC clock.
> 
> Signed-off-by: Corentin Labbe <clabbe.montjoie@gmail.com>
> ---
>  arch/arm/boot/dts/sun8i-h3.dtsi | 5 +++++
>  1 file changed, 5 insertions(+)
> 
> diff --git a/arch/arm/boot/dts/sun8i-h3.dtsi b/arch/arm/boot/dts/sun8i-h3.dtsi
> index fdf9fdb..a39da6f 100644
> --- a/arch/arm/boot/dts/sun8i-h3.dtsi
> +++ b/arch/arm/boot/dts/sun8i-h3.dtsi
> @@ -140,6 +140,11 @@
>  		#size-cells = <1>;
>  		ranges;
>  
> +		syscon: syscon@01c00000 {
> +			compatible = "syscon";

Having our compatible would be nice here. syscon doesn't mean anything
by itself.

> +			reg = <0x01c00000 0x34>;

And the size of our system controller is 0x1000

Maxime

-- 
Maxime Ripard, Free Electrons
Embedded Linux and Kernel engineering
http://free-electrons.com

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#1482487

FromLABBE Corentin <clabbe.montjoie@gmail.com>
Date2016-09-13 15:40 +0200
Message-ID<sgW6m-2yc-15@gated-at.bofh.it>
In reply to#1480966
On Mon, Sep 12, 2016 at 09:28:12AM +0200, Maxime Ripard wrote:
> On Fri, Sep 09, 2016 at 02:45:12PM +0200, Corentin Labbe wrote:
> > This patch add the dt node for the syscon register present on the
> > Allwinner H3.
> > 
> > Only two register are present in this syscon and the only one useful is
> > the one dedicated to EMAC clock.
> > 
> > Signed-off-by: Corentin Labbe <clabbe.montjoie@gmail.com>
> > ---
> >  arch/arm/boot/dts/sun8i-h3.dtsi | 5 +++++
> >  1 file changed, 5 insertions(+)
> > 
> > diff --git a/arch/arm/boot/dts/sun8i-h3.dtsi b/arch/arm/boot/dts/sun8i-h3.dtsi
> > index fdf9fdb..a39da6f 100644
> > --- a/arch/arm/boot/dts/sun8i-h3.dtsi
> > +++ b/arch/arm/boot/dts/sun8i-h3.dtsi
> > @@ -140,6 +140,11 @@
> >  		#size-cells = <1>;
> >  		ranges;
> >  
> > +		syscon: syscon@01c00000 {
> > +			compatible = "syscon";
> 
> Having our compatible would be nice here. syscon doesn't mean anything
> by itself.
> 

Since no driver handle it, I follow what I saw in other DT.
At your choice, I can add a sun8i-syscon, but it will be unused.

> > +			reg = <0x01c00000 0x34>;
> 
> And the size of our system controller is 0x1000
> 

I put the real size used, but I can put what datasheet said.

Regards

Corentin Labbe

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