lkml.org 
[lkml]   [2019]   [May]   [7]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH 2/2] serial: 8250: Add support for 8250/16550 as MFD function
On Tue, 07 May 2019, Esben Haabendal wrote:

> Lee Jones <lee.jones@linaro.org> writes:
>
> > On Fri, 26 Apr 2019, Esben Haabendal wrote:
> >
> >> The serial8250-mfd driver is for adding 8250/16550 UART ports as functions
> >> to an MFD driver.
> >>
> >> When calling mfd_add_device(), platform_data should be a pointer to a
> >> struct plat_serial8250_port, with proper settings like .flags, .type,
> >> .iotype, .regshift and .uartclk. Memory (or ioport) and IRQ should be
> >> passed as cell resources.
> >
> > What? No, please!
> >
> > If you *must* create a whole driver just to be able to use
> > platform_*() helpers (which I don't think you should), then please
> > call it something else. This doesn't have anything to do with MFD.
>
> True.
>
> I really don't think it is a good idea to create a whole driver just to
> be able to use platform_get_*() helpers. And if I am forced to do this,
> because I am unable to convince Andy to improve the standard serial8250
> driver to support that, it should be called MFD. The driver would be

I assume you mean "shouldn't"?

> generally usable for all usecases where platform_get_*() works.
>
> I don't have any idea what to call such a driver. It really would just
> be a fork of the current serial8250 driver, just allowing use of
> platform_get_*(), supporting exactly the same hardware.
>
> I am still hoping that we can find a way to improve serial8250 to be
> usable in these cases.

Me too.

--
Lee Jones [李琼斯]
Linaro Services Technical Lead
Linaro.org │ Open source software for ARM SoCs
Follow Linaro: Facebook | Twitter | Blog

\
 
 \ /
  Last update: 2019-05-07 15:39    [W:0.070 / U:3.464 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site