Messages in this thread | | | Subject | Re: [RFC PATCH 0/2] serial: 8250_dw: IO space + polling mode support | From | Andy Shevchenko <> | Date | Fri, 23 Feb 2018 12:30:01 +0200 |
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On Fri, 2018-02-23 at 02:42 +0800, John Garry wrote: > There is a requirement
Where?
> for supporting an 8250-compatible UART with > the following profile/features: > - platform device > - polling mode (i.e. no interrupt support)
> - ACPI FW
Elaborate this one, please.
> - IO port iotype > - 16550-compatible > > For OF, we have 8250_of.c, and for PNP device we have 8250_pnp.c > drivers. However there does not seem to any driver satisfying > the above requirements. So this RFC is to find opinion on > modifying the Synopsys DW 8250_dw.c driver to support these > generic features.
Synopsys 8250 is a particular case of platform drivers. It doesn't satisfy "8250-compatible UART" requirement.
> With patch 2/2, we're relaxing the interrupt support requirement. > As I mentioned in the commit log, the 8250_of.c driver seems to > ignore the dt bindings, and I do the same.
-- Andy Shevchenko <andriy.shevchenko@linux.intel.com> Intel Finland Oy
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