diff options
| author | Patrick Delaunay <patrick.delaunay@st.com> | 2019-07-30 19:16:18 +0200 |
|---|---|---|
| committer | Patrice Chotard <patrice.chotard@st.com> | 2019-08-27 09:36:56 +0200 |
| commit | 7acda7eae544992147850f1f9cbb903aaa3af34d (patch) | |
| tree | 0c7c3350e00ad156b6c1aaf9a2440daab561096b /arch | |
| parent | 9c2214b489d142b75359956453bffd7992d84b93 (diff) | |
ARM: dts: stm32mp1: add pull-up on serial rx of console connected to STLINK
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.delaunay@st.com>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/dts/stm32mp157a-dk1-u-boot.dtsi | 2 | ||||
| -rw-r--r-- | arch/arm/dts/stm32mp157c-ed1-u-boot.dtsi | 2 |
2 files changed, 4 insertions, 0 deletions
diff --git a/arch/arm/dts/stm32mp157a-dk1-u-boot.dtsi b/arch/arm/dts/stm32mp157a-dk1-u-boot.dtsi index 2a1cfd37e9..dcaab3eef2 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 200601edff..21c89c1ea2 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; }; }; |