[PATCH 2/2] arm64: dts: ti: k3-j7200-main: Add main domain watchdog entries

[Gowtham A Tammana]

Nishanth Menon wrote:
> On 18:07-20201216, Gowtham Tammana wrote:
> > Add DT entries for main domain watchdog instances.
> 
> Please add a note to indicate that these are the only watchdogs that
> are visible to Linux and ARMv8 systems.

Will update in v2.
> 
> You may need to repost the dts patch once you have the 
> > 
> > Signed-off-by: Gowtham Tammana <g-tammana at ti.com>
> > ---
> >  arch/arm64/boot/dts/ti/k3-j7200-main.dtsi | 18 ++++++++++++++++++
> >  1 file changed, 18 insertions(+)
> > 
> > diff --git a/arch/arm64/boot/dts/ti/k3-j7200-main.dtsi b/arch/arm64/boot/dts/ti/k3-j7200-main.dtsi
> > index 72d6496e88dd..de430d44c2a6 100644
> > --- a/arch/arm64/boot/dts/ti/k3-j7200-main.dtsi
> > +++ b/arch/arm64/boot/dts/ti/k3-j7200-main.dtsi
> > @@ -303,6 +303,24 @@ main_uart9: serial at 2890000 {
> >  		clock-names = "fclk";
> >  	};
> >  
> > +	watchdog0: watchdog at 2200000 {
> 
> If you are going to strengthen the node-names up (recommend we
> do that), you might want to use a regex and lock things down.
> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/Documentation//devicetree/bindings/watchdog/ti,rti-wdt.yaml#n26
> 
> That is much better option that expecting people to read the example and
> follow the convention.

there's one defined in [1] which is listed as included schema.

[1]:
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/Documentation/devicetree/bindings/watchdog/watchdog.yaml#19

> 
> > +		compatible = "ti,j7-rti-wdt";
> > +		reg = <0x0 0x2200000 0x0 0x100>;
> we try and keep 0x00 instead of 0x0 -> see other places in the dtsi

Do see them now, will fix them in v2.

Thanks for the review,
Gowtham

> > +		clocks = <&k3_clks 252 1>;
> > +		power-domains = <&k3_pds 252 TI_SCI_PD_EXCLUSIVE>;
> > +		assigned-clocks = <&k3_clks 252 1>;
> > +		assigned-clock-parents = <&k3_clks 252 5>;
> > +	};
> > +
> > +	watchdog1: watchdog at 2210000 {
> > +		compatible = "ti,j7-rti-wdt";
> > +		reg = <0x0 0x2210000 0x0 0x100>;
> > +		clocks = <&k3_clks 253 1>;
> > +		power-domains = <&k3_pds 253 TI_SCI_PD_EXCLUSIVE>;
> > +		assigned-clocks = <&k3_clks 253 1>;
> > +		assigned-clock-parents = <&k3_clks 253 5>;
> > +	};
> > +
> >  	main_i2c0: i2c at 2000000 {
> >  		compatible = "ti,j721e-i2c", "ti,omap4-i2c";
> >  		reg = <0x00 0x2000000 0x00 0x100>;
> 
> -- 
> Regards,
> Nishanth Menon
> Key (0xDDB5849D1736249D) / Fingerprint: F8A2 8693 54EB 8232 17A3  1A34 DDB5 849D 1736 249D