Avoid U-Boot auto-boot interruption for line break detection on console when the RX line connected to STLINK is floating (-IO error in getc cause by framing error and testc return 1) Same workaround is applied on all the STMicroelectonics board.
Signed-off-by: Patrick Delaunay <patrick.delau...@st.com> --- arch/arm/dts/stm32mp157a-dk1-u-boot.dtsi | 2 ++ arch/arm/dts/stm32mp157c-ed1-u-boot.dtsi | 2 ++ 2 files changed, 4 insertions(+) diff --git a/arch/arm/dts/stm32mp157a-dk1-u-boot.dtsi b/arch/arm/dts/stm32mp157a-dk1-u-boot.dtsi index 2a1cfd3..dcaab3e 100644 --- a/arch/arm/dts/stm32mp157a-dk1-u-boot.dtsi +++ b/arch/arm/dts/stm32mp157a-dk1-u-boot.dtsi @@ -189,6 +189,8 @@ }; pins2 { u-boot,dm-pre-reloc; + /* pull-up on rx to avoid floating level */ + bias-pull-up; }; }; diff --git a/arch/arm/dts/stm32mp157c-ed1-u-boot.dtsi b/arch/arm/dts/stm32mp157c-ed1-u-boot.dtsi index 200601e..21c89c1 100644 --- a/arch/arm/dts/stm32mp157c-ed1-u-boot.dtsi +++ b/arch/arm/dts/stm32mp157c-ed1-u-boot.dtsi @@ -206,5 +206,7 @@ }; pins2 { u-boot,dm-pre-reloc; + /* pull-up on rx to avoid floating level */ + bias-pull-up; }; }; -- 2.7.4 _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de https://lists.denx.de/listinfo/u-boot