[PATCH v8 3/5] arm64: dts: ti: k3-am65-mcu: Add RTI watchdog entry

Tom Rini trini at konsulko.com
Sun Oct 3 20:40:43 CEST 2021


On Sat, Sep 18, 2021 at 08:17:54AM +0200, Jan Kiszka wrote:

> From: Jan Kiszka <jan.kiszka at siemens.com>
> 
> Add the DT entry for a watchdog based on RTI1. It requires additional
> firmware on the MCU R5F cores to handle the expiry, e.g.
> https://github.com/siemens/k3-rti-wdt. As this firmware will also lock
> the power domain to protect it against premature shutdown, mark it
> shared.
> 
> Aligns us to the kernel's DT in this regard.
> 
> Signed-off-by: Jan Kiszka <jan.kiszka at siemens.com>
> ---
>  arch/arm/dts/k3-am65-mcu.dtsi | 9 +++++++++
>  1 file changed, 9 insertions(+)
> 
> diff --git a/arch/arm/dts/k3-am65-mcu.dtsi b/arch/arm/dts/k3-am65-mcu.dtsi
> index 7454c8cec0..903796bf7d 100644
> --- a/arch/arm/dts/k3-am65-mcu.dtsi
> +++ b/arch/arm/dts/k3-am65-mcu.dtsi
> @@ -308,4 +308,13 @@
>  			ti,loczrama = <1>;
>  		};
>  	};
> +
> +	mcu_rti1: rti at 40610000 {
> +		compatible = "ti,j7-rti-wdt";
> +		reg = <0x0 0x40610000 0x0 0x100>;
> +		clocks = <&k3_clks 135 0>;
> +		power-domains = <&k3_pds 135 TI_SCI_PD_SHARED>;
> +		assigned-clocks = <&k3_clks 135 0>;
> +		assigned-clock-parents = <&k3_clks 135 4>;
> +	};
>  };

So, in applying
https://patchwork.ozlabs.org/project/uboot/patch/20210910213743.30793-1-trini@konsulko.com/
to bring us fully to v5.14 for K3 platforms, this patch is no longer
needed, and I'm deferring it.  The only difference is the node name is
"watchdog at 40610000" not "rti at 40610000" but should not matter (and
doesn't look to from a quick read of the rest of the series.

-- 
Tom
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