In order to make the console pins more robust to noise, activate the pullups and increase its drive strength.
Signed-off-by: Otavio Salvador otavio@ossystems.com.br ---
arch/arm/dts/rv1108-elgin-r1.dts | 11 +++++++++++ 1 file changed, 11 insertions(+)
diff --git a/arch/arm/dts/rv1108-elgin-r1.dts b/arch/arm/dts/rv1108-elgin-r1.dts index 32b95940b0..83e8b31838 100644 --- a/arch/arm/dts/rv1108-elgin-r1.dts +++ b/arch/arm/dts/rv1108-elgin-r1.dts @@ -40,9 +40,20 @@ };
&uart2 { + pinctrl-names = "default"; + pinctrl-0 = <&uart2m0_xfer_pullup>; status = "okay"; };
&usb20_otg { status = "okay"; }; + +&pinctrl { + uart2m0 { + uart2m0_xfer_pullup: uart2m0-xfer-pullup { + rockchip,pins = <2 RK_PD2 RK_FUNC_1 &pcfg_pull_up_drv_8ma>, + <2 RK_PD1 RK_FUNC_1 &pcfg_pull_up_drv_8ma>; + }; + }; +};