Messages in this thread | | | Date | Thu, 3 Aug 2023 14:40:05 +0300 | From | Andy Shevchenko <> | Subject | Re: [PATCH 1/2] dt-bindings: serial: snps-dw-apb-uart: make interrupt optional |
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On Wed, Aug 02, 2023 at 11:53:59PM +0100, Conor Dooley wrote: > On Thu, Aug 03, 2023 at 12:57:44AM +0300, Andy Shevchenko wrote: > > On Wed, Aug 02, 2023 at 04:43:48PM +0100, Conor Dooley wrote: > > > On Wed, Aug 02, 2023 at 11:05:44PM +0800, Jisheng Zhang wrote: > > > > The driver fall back to poll style when there's no irq. "poll" still > > > > looks better than no support. > > > > > > What is the user for this where the interrupt is not actually wired up > > > in the hardware? > > > > FYI: kernel console doesn't use interrupts, so for example it might be > > the debug port. Note, I have no idea of the Zhang's case, just my assumption. > > I'm less interested in what the software is doing, it's what the device > that has not connected the interrupt is that I am curious about.
As I said. The hw may be purely for debugging purposes (and yes, I have heard about such a hardware).
-- With Best Regards, Andy Shevchenko
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