schemas: wakeup-source: Possibility for power states #150
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wakeup-source in its current form ignores power states. But with modern SoCs there are many powerstates that have a different set of devices enabled. Also there are more complex wakeup mechanisms available. As an example TI's am62 SoC has a power state called 'Partial-IO' in which most of the SoC is powered off and only a small device logic is present for a few select devices that can still wakeup the SoC. But most devices that are usually able to wakeup the SoC are not capable to do it in Partial-IO. In order to properly describe the wakeup-source property depending on the power state, this patch extends the definition to be either boolean or a list of power state names in which this device is capable of wakeup. Signed-off-by: Markus Schneider-Pargmann <[email protected]>
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wakeup-source in its current form ignores power states. But with modern SoCs there are many powerstates that have a different set of devices enabled. Also there are more complex wakeup mechanisms available.
As an example TI's am62 SoC has a power state called 'Partial-IO' in which most of the SoC is powered off and only a small device logic is present for a few select devices that can still wakeup the SoC. But most devices that are usually able to wakeup the SoC are not capable to do it in Partial-IO.
In order to properly describe the wakeup-source property depending on the power state, this patch extends the definition to be either boolean or a list of power state names in which this device is capable of wakeup.
This is the Linux Kernel series that adds support for Partial-IO:
https://lore.kernel.org/all/20241219-topic-am62-partialio-v6-12-b4-v4-0-1cb8eabd407e@baylibre.com/
This is was my previous patch adding this binding before realizing the wakeup-source property is defined in this schema repository:
https://lore.kernel.org/all/20241219-topic-mcan-wakeup-source-v6-12-v6-1-1356c7f7cfda@baylibre.com/