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

Jan Kiszka jan.kiszka at siemens.com
Mon Oct 4 09:44:10 CEST 2021


On 03.10.21 20:40, Tom Rini wrote:
> 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.
> 

Ack, this is now obsolete.

Jan

-- 
Siemens AG, T RDA IOT
Corporate Competence Center Embedded Linux


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