linux-kernel - Re: [PATCH 1/4] arm64: dts: ti: k3-am62-wakeup: Add wakeup r5f node

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Message-ID: <6d896633-0545-4e2c-ac7d-a05686a0df49@ti.com>
Date: Tue, 28 Jan 2025 10:27:11 -0600
From: Judith Mendez <jm@...com>
To: Andrew Davis <afd@...com>, Nishanth Menon <nm@...com>,
        Vignesh Raghavendra
	<vigneshr@...com>
CC: Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>,
        Conor Dooley <conor+dt@...nel.org>,
        <linux-arm-kernel@...ts.infradead.org>, <devicetree@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, Devarsh Thakkar
	<devarsht@...com>,
        Hari Nagalla <hnagalla@...com>
Subject: Re: [PATCH 1/4] arm64: dts: ti: k3-am62-wakeup: Add wakeup r5f node

Hi Andrew,

On 1/28/25 10:22 AM, Andrew Davis wrote:
> On 1/27/25 4:16 PM, Judith Mendez wrote:
>> From: Hari Nagalla <hnagalla@...com>
>>
>> AM62 SoC devices have a single core R5F processor in wakeup domain.
>> The R5F processor in wakeup domain is used as a device manager
>> for the SoC.
>>
>> Co-authored-by: Devarsh Thakkar <devarsht@...com>
>> Signed-off-by: Hari Nagalla <hnagalla@...com>
>> [Judith: Fix commit message header]
>> Signed-off-by: Judith Mendez <jm@...com>
>> ---
>>   arch/arm64/boot/dts/ti/k3-am62-wakeup.dtsi | 24 ++++++++++++++++++++++
>>   1 file changed, 24 insertions(+)
>>
>> diff --git a/arch/arm64/boot/dts/ti/k3-am62-wakeup.dtsi 
>> b/arch/arm64/boot/dts/ti/k3-am62-wakeup.dtsi
>> index 9b8a1f85aa15c..79708c1c214f8 100644
>> --- a/arch/arm64/boot/dts/ti/k3-am62-wakeup.dtsi
>> +++ b/arch/arm64/boot/dts/ti/k3-am62-wakeup.dtsi
>> @@ -106,6 +106,30 @@ wkup_rti0: watchdog@...00000 {
>>           status = "reserved";
>>       };
>> +    wkup_r5fss0: r5fss@...00000 {
>> +        compatible = "ti,am62-r5fss";
>> +        #address-cells = <1>;
>> +        #size-cells = <1>;
>> +        ranges = <0x78000000 0x00 0x78000000 0x8000>,
>> +                 <0x78100000 0x00 0x78100000 0x8000>;
>> +        power-domains = <&k3_pds 119 TI_SCI_PD_EXCLUSIVE>;
>> +
>> +        wkup_r5fss0_core0: r5f@...00000 {
>> +            compatible = "ti,am62-r5f";
>> +            reg = <0x78000000 0x00008000>,
>> +                  <0x78100000 0x00008000>;
>> +            reg-names = "atcm", "btcm";
>> +            ti,sci = <&dmsc>;
>> +            ti,sci-dev-id = <121>;
>> +            ti,sci-proc-ids = <0x01 0xff>;
>> +            resets = <&k3_reset 121 1>;
>> +            firmware-name = 
>> "ti-sysfw/ti-fs-stub-firmware-am62x-gp-signed.bin";
> 
> What is this firmware name? This doesn't exist in linux-firmware,
> should use the normal name like "am62-wkup-r5f0_0-fw", then we
> can use symlinks in our userspace to map to whatever firmware we
> want to run.

Understood, will respin with fixed name, thanks.

~ Judith

> 
> Andrew
> 
>> +            ti,atcm-enable = <1>;
>> +            ti,btcm-enable = <1>;
>> +            ti,loczrama = <1>;
>> +        };
>> +    };
>> +
>>       wkup_vtm0: temperature-sensor@...000 {
>>           compatible = "ti,j7200-vtm";
>>           reg = <0x00 0xb00000 0x00 0x400>,