On Thu, 20 Oct 2022, Helge Deller wrote:
> On 10/20/22 21:57, Mikulas Patocka wrote:
> >
> >
> > On Thu, 20 Oct 2022, Helge Deller wrote:
> >
> > > On 10/20/22 20:01, Helge Deller wrote:
> > > > On 10/20/22 15:26, Mikulas Patocka wrote:
> > > > > On Thu, 20 Oct 2022, Helge Deller wrote:
> > > > >
> > > > > > Your serial ports don't seem to be detected and thus missing...?!
> > > > >
> > > > > It seems to be so. Does it work on your C8000? - if it does, send me
> > > > > your
> > > > > config and I'll find the difference.
> > >
> > > Works for me on c8k with serial console (parameter console=ttyS0):
> > > config attached.
> >
> > Thanks. CONFIG_GSC=y fixed it for me.
>
> Good.
>
> > Maybe you should update the help text for CONFIG_GSC. It says that it is
> > "not found in B1000, C3000, J5000, A500, L1000, N4000 and upwards" - so I
> > turned it off when making my config.
>
> The help text is actually correct.
> Your C8000 does not has a GSC bus, so why does CONFIG_GSC=n disables your
> serial ports?
> Needs checking..
>
> Helge
There's drivers/tty/serial/8250/Kconfig:
config SERIAL_8250_GSC
tristate
depends on SERIAL_8250 && GSC
default SERIAL_8250
drivers/tty/serial/8250/Makefile:
obj-$(CONFIG_SERIAL_8250_GSC) += 8250_gsc.o
drivers/tty/serial/8250/8250_gsc.c contains this device table:
static const struct parisc_device_id serial_tbl[] __initconst = {
{ HPHW_FIO, HVERSION_REV_ANY_ID, HVERSION_ANY_ID, 0x00075 },
{ HPHW_FIO, HVERSION_REV_ANY_ID, HVERSION_ANY_ID, 0x0008c },
{ HPHW_FIO, HVERSION_REV_ANY_ID, HVERSION_ANY_ID, 0x0008d },
{ HPHW_FIO, HVERSION_REV_ANY_ID, HVERSION_ANY_ID, 0x000ad }, <--- this matches the serial port on C8000
{ 0 }
};
So, perhaps it should depend on CONFIG_PARISC instead of CONFIG_GSC.
Mikulas
