On Wed, Nov 27, 2024 at 03:54:52PM +0000, Jon Hunter wrote: > On the Tegra Jetson boards we have a 40-pin expansion header similar to what > is found on boards like Raspberry Pi and allows users to connect various > cards to. By having a pseudo device we can interact with different SPI > devices. > Yes by default nothing is connected and so there is nothing to talk to. > However, this does enable us to do SPI loopback testing for example. > So I am wondering if it would be acceptable to having some generic dummy > device-tree compatible string for this? I guess it does not need to be Tegra > specific. I understand what he's trying to accomplish, it's the same thing as what everyone who wants to put a raw spidev compatible in their DT is trying to do. The way to do this would be something like a DT overlay that describes whatever is actually connected, or just customise the DT locally.
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