diff mbox

[2/5] arm64: dts: allwinner: a64: Add watchdog

Message ID 20180312161050.7647-3-harald@ccbib.org (mailing list archive)
State New, archived
Headers show

Commit Message

Harald Geyer March 12, 2018, 4:10 p.m. UTC
Add a watchdog node for the A64, automatically enabled on all boards.
Tested on Olimex Teres I.

Signed-off-by: Harald Geyer <harald@ccbib.org>
---
 arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi | 6 ++++++
 1 file changed, 6 insertions(+)

Comments

Andre Przywara March 13, 2018, 1:39 a.m. UTC | #1
On 12/03/18 16:10, Harald Geyer wrote:

Hi,

> Add a watchdog node for the A64, automatically enabled on all boards.
> Tested on Olimex Teres I.
> 
> Signed-off-by: Harald Geyer <harald@ccbib.org>
> ---
>  arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi | 6 ++++++
>  1 file changed, 6 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi b/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi
> index 64e452a758fa..ca1b365bc722 100644
> --- a/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi
> +++ b/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi
> @@ -665,5 +665,11 @@
>  			#address-cells = <1>;
>  			#size-cells = <0>;
>  		};
> +
> +		wdt0: watchdog@1c20ca0 {
> +			compatible = "allwinner,sun6i-a31-wdt";

Please use the recommended way, adding a specific compatible first:

			compatible = "allwinner,sun50i-a64-wdt",
				     "allwinner,sun6i-a31-wdt";

The rest looks correct.

I am just a bit puzzled what's the use of a watchdog on a laptop? I
would expect it being more used in embedded systems? Or is that patch
here actually independent from the Teres I?

Cheers,
Andre.

> +			reg = <0x01c20ca0 0x20>;
> +			interrupts = <GIC_SPI 25 IRQ_TYPE_LEVEL_HIGH>;
> +		};
>  	};
>  };
>
Harald Geyer March 13, 2018, 10:03 a.m. UTC | #2
Hi,

André Przywara writes:
> On 12/03/18 16:10, Harald Geyer wrote:
> > Add a watchdog node for the A64, automatically enabled on all boards.
> > Tested on Olimex Teres I.
> > 
> > Signed-off-by: Harald Geyer <harald@ccbib.org>
> > ---
> >  arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi | 6 ++++++
> >  1 file changed, 6 insertions(+)
> > 
> > diff --git a/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi b/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi
> > index 64e452a758fa..ca1b365bc722 100644
> > --- a/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi
> > +++ b/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi
> > @@ -665,5 +665,11 @@
> >  			#address-cells = <1>;
> >  			#size-cells = <0>;
> >  		};
> > +
> > +		wdt0: watchdog@1c20ca0 {
> > +			compatible = "allwinner,sun6i-a31-wdt";
> 
> Please use the recommended way, adding a specific compatible first:
> 
> 			compatible = "allwinner,sun50i-a64-wdt",
> 				     "allwinner,sun6i-a31-wdt";

I tried to follow the style most commonly used in the rest of the file,
but I can add the new string to the binding documentation and use it here.

> The rest looks correct.
> 
> I am just a bit puzzled what's the use of a watchdog on a laptop?

I guess the same as the watchdog on my x86 PC - debugging/testing software
using watchdogs. ;)

> I
> would expect it being more used in embedded systems? Or is that patch
> here actually independent from the Teres I?

Yes, I could have sent it as independent patch, but I figured merging
is easier if there aren't independent patches touching the same file at
the same time.

I mostly added support for the watchdog because it was listed in the
wiki as untested and it cost me virtually no time to run a few tests while
working on the teres.

Thanks,
Harald

> Cheers,
> Andre.
> 
> > +			reg = <0x01c20ca0 0x20>;
> > +			interrupts = <GIC_SPI 25 IRQ_TYPE_LEVEL_HIGH>;
> > +		};
> >  	};
> >  };
> > 
>
diff mbox

Patch

diff --git a/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi b/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi
index 64e452a758fa..ca1b365bc722 100644
--- a/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi
+++ b/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi
@@ -665,5 +665,11 @@ 
 			#address-cells = <1>;
 			#size-cells = <0>;
 		};
+
+		wdt0: watchdog@1c20ca0 {
+			compatible = "allwinner,sun6i-a31-wdt";
+			reg = <0x01c20ca0 0x20>;
+			interrupts = <GIC_SPI 25 IRQ_TYPE_LEVEL_HIGH>;
+		};
 	};
 };