[PATCH] apple: Fix debug uart clock rate

Mark Kettenis mark.kettenis at xs4all.nl
Sun Feb 6 13:22:58 CET 2022


> From: Sean Anderson <seanga2 at gmail.com>
> Date: Sat, 5 Feb 2022 23:04:07 -0500
> 
> On 2/5/22 6:14 PM, Mark Kettenis wrote:
> > The clock rate for the serial console on Apple M1 systems is 24 MHz
> > instead of 240 Hz.
> 
> nit: kHz?

Ah yes.  Brain slightly misfired when writing that commit message.
Thanks!  I've sent a v2 with that fixed.  And also fixed Simon's email
address on the CC.

> > Signed-off-by: Mark Kettenis <kettenis at openbsd.org>
> > ---
> >   configs/apple_m1_defconfig | 2 +-
> >   1 file changed, 1 insertion(+), 1 deletion(-)
> > 
> > diff --git a/configs/apple_m1_defconfig b/configs/apple_m1_defconfig
> > index cb235e4e7d..71ffbc6ec4 100644
> > --- a/configs/apple_m1_defconfig
> > +++ b/configs/apple_m1_defconfig
> > @@ -2,7 +2,7 @@ CONFIG_ARM=y
> >   CONFIG_ARCH_APPLE=y
> >   CONFIG_DEFAULT_DEVICE_TREE="t8103-j274"
> >   CONFIG_DEBUG_UART_BASE=0x235200000
> > -CONFIG_DEBUG_UART_CLOCK=240000
> > +CONFIG_DEBUG_UART_CLOCK=24000000
> >   CONFIG_DEBUG_UART=y
> >   CONFIG_SYS_LOAD_ADDR=0x880000000
> >   CONFIG_USE_PREBOOT=y
> > 
> 
> 


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