[PATCH] arm: apple: Disable debug UART

[Mark Kettenis]

> From: Simon Glass <sjg at chromium.org>
> Date: Fri, 11 Feb 2022 13:29:15 -0700
> 
> Hi Mark,
> 
> On Fri, 11 Feb 2022 at 13:00, Mark Kettenis <kettenis at openbsd.org> wrote:
> >
> > The address of the debug UART varies differs between the M1 and
> > the M1 Pro/Max SoCs.  So we have to disable it to make a single
> > U-Boot binary that works on all SoC generations.  Leave the
> > settings for the base address and clock rate of the M1 in place
> > to make it easier to re-enable the debug UART when needed.
> 
> How about adding some docs about how to, and what the addresses are?

Yes I can do that.  A section at the end of doc/board/apple/m1.rst?
Is it ok if I provide a single update to that file for the M1 Pro/Max
support?

> > Signed-off-by: Mark Kettenis <kettenis at openbsd.org>
> > ---
> >  configs/apple_m1_defconfig | 1 -
> >  1 file changed, 1 deletion(-)
> >
> > diff --git a/configs/apple_m1_defconfig b/configs/apple_m1_defconfig
> > index ef5b7ffd1a..396fe63114 100644
> > --- a/configs/apple_m1_defconfig
> > +++ b/configs/apple_m1_defconfig
> > @@ -3,7 +3,6 @@ CONFIG_ARCH_APPLE=y
> >  CONFIG_DEFAULT_DEVICE_TREE="t8103-j274"
> >  CONFIG_DEBUG_UART_BASE=0x235200000
> >  CONFIG_DEBUG_UART_CLOCK=24000000
> > -CONFIG_DEBUG_UART=y
> >  CONFIG_SYS_LOAD_ADDR=0x0
> >  CONFIG_USE_PREBOOT=y
> >  # CONFIG_DISPLAY_CPUINFO is not set
> > --
> > 2.35.1
> >
> 
> Regards,
> SImon
>