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authorPatrick Delaunay <patrick.delaunay@st.com>2019-07-30 19:16:18 +0200
committerPatrice Chotard <patrice.chotard@st.com>2019-08-27 09:36:56 +0200
commit7acda7eae544992147850f1f9cbb903aaa3af34d (patch)
tree0c7c3350e00ad156b6c1aaf9a2440daab561096b /arch/arm/dts/stm32mp157a-dk1-u-boot.dtsi
parent9c2214b489d142b75359956453bffd7992d84b93 (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/arm/dts/stm32mp157a-dk1-u-boot.dtsi')
-rw-r--r--arch/arm/dts/stm32mp157a-dk1-u-boot.dtsi2
1 files changed, 2 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;
};
};