Re: [PATCH] dt-bindings: rtc: zynqmp: Describe power-domains property

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On 2/19/24 14:19, Krzysztof Kozlowski wrote:
On 19/02/2024 14:11, Michal Simek wrote:


On 2/17/24 09:26, Krzysztof Kozlowski wrote:
On 16/02/2024 10:42, Michal Simek wrote:


On 2/16/24 10:19, Krzysztof Kozlowski wrote:
On 16/02/2024 09:51, Michal Simek wrote:
RTC has its own power domain on Xilinx Versal SOC that's why describe it as
optional property.

Signed-off-by: Michal Simek <michal.simek@xxxxxxx>
---

    Documentation/devicetree/bindings/rtc/xlnx,zynqmp-rtc.yaml | 3 +++
    1 file changed, 3 insertions(+)


But Versal is not described in this binding, is it? I see only one
compatible.

It is the same IP only as is on zynqmp with own power rail.

Then you should have separate compatible, because they are not
identical. It would also allow you to narrow the domains to versal and
also require it (on versal).

I can double check with HW guys but I am quite sure IP itself is exactly the
same. What it is different is that there is own power domain to it (not shared
one as is in zynqmp case).

What does it mean shared one? If several devices share power domain,
then they all should have power-domains property.

Shared one means that the same power domain is shared with other IPs or simply enabled by default without any option to disable it.

Thanks,
Michal





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