On Tue, Apr 04, 2023 at 03:00:09PM +0900, Jaewon Kim wrote: > This patch adds new 'samsung,spi-polling' property to support polling mode. > In some environments, polling mode is required even if DMA is supported. > Changed it to support not only with quick but also optinally with > devicetree. Why would this be required if we can use DMA? If this is a performance optimisation for small messages the driver should just work out when to choose PIO over DMA like other drivers do. It is hard to see this as a hardware property which should be configured via DT.
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