On 22/01/20 5:09 PM, Peter Ujfalusi wrote:
>
>
> On 22/01/2020 13.03, Lokesh Vutla wrote:
>>
>>
>> On 22/01/20 1:56 PM, Peter Ujfalusi wrote:
>>> NAVSS is a subsystem containing different IPs, it is not really a bus.
>>> Change the compatible from "simple-bus" to "simple-mfd" to reflect that.
>>>
>>> Signed-off-by: Peter Ujfalusi <peter.ujfalusi@xxxxxx>
>>> ---
>>> arch/arm64/boot/dts/ti/k3-am65-main.dtsi | 4 ++--
>>> 1 file changed, 2 insertions(+), 2 deletions(-)
>>>
>>> diff --git a/arch/arm64/boot/dts/ti/k3-am65-main.dtsi b/arch/arm64/boot/dts/ti/k3-am65-main.dtsi
>>> index efb24579922c..e40f7acbec42 100644
>>> --- a/arch/arm64/boot/dts/ti/k3-am65-main.dtsi
>>> +++ b/arch/arm64/boot/dts/ti/k3-am65-main.dtsi
>>> @@ -385,8 +385,8 @@ intr_main_gpio: interrupt-controller0 {
>>> ti,sci-rm-range-girq = <0x1>;
>>> };
>>>
>>> - cbass_main_navss: interconnect0 {
>>> - compatible = "simple-bus";
>>> + cbass_main_navss: navss@30800000 {
>>
>> This introduces below dtc warning when built with W=1
>>
>> arch/arm64/boot/dts/ti/k3-am65-main.dtsi:388.35-530.4: Warning
>> (unit_address_vs_reg): /interconnect@100000/navss@30800000: node has a unit
>> name, but no reg property
>
> Interesting, the example in
> Documentation/devicetree/bindings/dma/ti/k3-udma.yaml
>
> is basically the same and dt_binding_check is happy about it:
> DTC Documentation/devicetree/bindings/dma/ti/k3-udma.example.dt.yaml
> CHECK Documentation/devicetree/bindings/dma/ti/k3-udma.example.dt.yaml
>
> but it screamed when I had the simple-bus in there (copied from the
> existing dtsi file).
>
> The node name for simple-bus _must_ be
> '^(bus|soc|axi|ahb|apb)(@[0-9a-f]+)?$'
>
> I would not use any of these to NAVSS node...
>
>> this is representing cbass inside main_navss, just like cbass_main. You can drop
>> this patch and the similar mcu version.
>
> According to Documentation/devicetree/bindings/mfd/mfd.txt:
> - compatible : "simple-mfd" - this signifies that the operating system
> should consider all subnodes of the MFD device as separate devices
> akin to how "simple-bus" indicates when to see subnodes as children
> for a simple memory-mapped bus.
>
> NAVSS is falling into simple-mfd as the devices under it are independent
> devices.
okay, may be rename cbass_main_navss to main_navss.
Thanks and regards,
Lokesh
>
>>
>> Thanks and regards,
>> Lokesh
>>
>>> + compatible = "simple-mfd";
>>> #address-cells = <2>;
>>> #size-cells = <2>;
>>> ranges;
>>>
>
> - Péter
>
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>
