Hi Marek, > From: Marek Vasut <[email protected]> > Sent: samedi 22 août 2020 22:46 > > There is no dedicated pull resistor on the AV96 UART4 (console UART) pin. In > case there is no UART adapter installed on the AV96, the line is floating and > can > trigger reception of garbage characters, which in turn can abort U-Boot > autoboot. > Add default pull up to mitigate this problem. > > Signed-off-by: Marek Vasut <[email protected]> > Cc: Patrick Delaunay <[email protected]> > Cc: Patrice Chotard <[email protected]> > --- > arch/arm/dts/stm32mp15xx-dhcor-avenger96-u-boot.dtsi | 2 ++ > 1 file changed, 2 insertions(+) > > diff --git a/arch/arm/dts/stm32mp15xx-dhcor-avenger96-u-boot.dtsi > b/arch/arm/dts/stm32mp15xx-dhcor-avenger96-u-boot.dtsi > index cb92fc9c14..1ae57e1854 100644 > --- a/arch/arm/dts/stm32mp15xx-dhcor-avenger96-u-boot.dtsi > +++ b/arch/arm/dts/stm32mp15xx-dhcor-avenger96-u-boot.dtsi > @@ -75,6 +75,8 @@ > }; > pins2 { > u-boot,dm-pre-reloc; > + /delete-property/ bias-disable; > + bias-pull-up; > }; > }; > > -- > 2.28.0
Reviewed-by: Patrick Delaunay <[email protected]> Applied to u-boot-stm/master, thanks! Thanks Patrick
