diff options
| author | Marek Vasut <marex@denx.de> | 2020-08-22 22:45:36 +0200 |
|---|---|---|
| committer | Patrick Delaunay <patrick.delaunay@st.com> | 2020-09-09 15:01:53 +0200 |
| commit | 43e2d1dd47a7e9b126659dc17a10f351e49bc53b (patch) | |
| tree | 2a32a4b6fe25d511c4f53c7393a615c18b6e4b9b | |
| parent | cf8df34015fcbd6b85a8ebadd22382d68c57f4e5 (diff) | |
ARM: dts: stm32: Pull UART4 RX high on AV96
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 <marex@denx.de>
Cc: Patrick Delaunay <patrick.delaunay@st.com>
Cc: Patrice Chotard <patrice.chotard@st.com>
Reviewed-by: Patrick Delaunay <patrick.delaunay@st.com>
| -rw-r--r-- | arch/arm/dts/stm32mp15xx-dhcor-avenger96-u-boot.dtsi | 2 |
1 files changed, 2 insertions, 0 deletions
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; }; }; |