[PATCH v8 03/11] arm64: dts: ti: k3-am62a-mcu: Add R5F remote proc node

[Mendez, Judith]

Hi Daniel,

On 5/5/2025 4:55 AM, Daniel Schultz wrote:
> Hi,
> 
> I'm unable to load the latest TI firmware 
> (98efd20ec71f8c1c8f909d34ab656731) with this patch.
> 
> [    7.012889] remoteproc remoteproc1: 79000000.r5f is available
> [    7.032640] remoteproc remoteproc1: powering up 79000000.r5f
> [    7.038626] remoteproc remoteproc1: Booting fw image am62a-mcu- 
> r5f0_0-fw, size 53140
> [    7.057209] remoteproc remoteproc1: bad phdr da 0x79100000 mem 0x47ea0
> [    7.064716] remoteproc remoteproc1: Failed to load program segments: -22
> 
> I figured out that the mcu sram node disappeared in v5. Apparently 
> adding it back manually doesn't solve this problem. Any idea what's wrong?

For am62ax, there should be several items changed with this v8
series in order for remoteproc to work with the TI default firmware:

1. memory carveouts were reduced to 15MB [0] & edge-ai memory
carveouts are not included here
2. mcu_sram1 node removed [2]

If you want to catch up on the general direction for this series,
please refer to [3]. atm remoteproc can fail with the default FW,
but we are trying to move away from that firmware and this is the
first step in that direction.

[0] 
https://lore.kernel.org/linux-devicetree/0ab5c5ec-cde3-41f1-8adf-2419b31497c1@ti.com/
[1] 
https://lore.kernel.org/linux-devicetree/04e77daf-e775-44fa-82bf-8b6ebf73bcef@ti.com/
[2] 
https://lore.kernel.org/linux-devicetree/32358aa1-0c02-4f4d-9782-2d8376c0d9fc@ti.com/
[3] 
https://lore.kernel.org/linux-devicetree/e131298f-3713-482a-a740-ff89709270b4@ti.com/

~ Judith

> 
> On 5/3/25 00:03, Judith Mendez wrote:
>> From: Hari Nagalla <hnagalla at ti.com>
>>
>> AM62A SoCs have a single R5F core in the MCU voltage domain.
>> Add the R5FSS node with the child node for core0 in MCU voltage
>> domain .dtsi file.
>>
>> Signed-off-by: Hari Nagalla <hnagalla at ti.com>
>> Signed-off-by: Judith Mendez <jm at ti.com>
>> Acked-by: Andrew Davis <afd at ti.com>
>> ---
>>   arch/arm64/boot/dts/ti/k3-am62a-mcu.dtsi | 25 ++++++++++++++++++++++++
>>   1 file changed, 25 insertions(+)
>>
>> diff --git a/arch/arm64/boot/dts/ti/k3-am62a-mcu.dtsi b/arch/arm64/ 
>> boot/dts/ti/k3-am62a-mcu.dtsi
>> index 9ed9d703ff24..ee961ced7208 100644
>> --- a/arch/arm64/boot/dts/ti/k3-am62a-mcu.dtsi
>> +++ b/arch/arm64/boot/dts/ti/k3-am62a-mcu.dtsi
>> @@ -174,4 +174,29 @@ mcu_mcan1: can at 4e18000 {
>>           bosch,mram-cfg = <0x0 128 64 64 64 64 32 32>;
>>           status = "disabled";
>>       };
>> +
>> +    mcu_r5fss0: r5fss at 79000000 {
>> +        compatible = "ti,am62-r5fss";
>> +        #address-cells = <1>;
>> +        #size-cells = <1>;
>> +        ranges = <0x79000000 0x00 0x79000000 0x8000>,
>> +             <0x79020000 0x00 0x79020000 0x8000>;
>> +        power-domains = <&k3_pds 7 TI_SCI_PD_EXCLUSIVE>;
>> +        status = "disabled";
>> +
>> +        mcu_r5fss0_core0: r5f at 79000000 {
>> +            compatible = "ti,am62-r5f";
>> +            reg = <0x79000000 0x00008000>,
>> +                  <0x79020000 0x00008000>;
>> +            reg-names = "atcm", "btcm";
>> +            resets = <&k3_reset 9 1>;
>> +            firmware-name = "am62a-mcu-r5f0_0-fw";
>> +            ti,atcm-enable = <0>;
>> +            ti,btcm-enable = <1>;
>> +            ti,loczrama = <0>;
>> +            ti,sci = <&dmsc>;
>> +            ti,sci-dev-id = <9>;
>> +            ti,sci-proc-ids = <0x03 0xff>;
>> +        };
>> +    };
>>   };