On 07/01/2025 09:49, Andre Werner wrote: > Dear Krzysztof, > > On Tue, 7 Jan 2025, Krzysztof Kozlowski wrote: > >> On Mon, Jan 06, 2025 at 09:50:50AM +0100, Andre Werner wrote: >>> Polling mode is enabled if the "interrupts" property is missing. >>> Thus, this commit deletes "interrupts" entry from "required" section >>> and adds a description for the fallback to polling mode at the >>> "interrupts" entry. >> >> Can the device actually operate with interrupt line disconnected? I >> skimmed through datasheet and they did not mention that as a valid >> setup. > > For polling mode the datasheet said: > > In Polled mode (IER[3:0] = 0000) the status of the receiver and transmitter can be > checked by polling the Line Status Register (LSR). This mode is an alternative to the FIFO > Interrupt mode of operation where the status of the receiver and transmitter is > automatically known by means of interrupts sent to the CPU. I guess this would mean that line can be physically disconnected. Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@xxxxxxxxxx> Best regards, Krzysztof
