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So remove it to fix below CHECK_DTBS warnings: arch/arm/boot/dts/nxp/imx/imx7ulp-evk.dtb: pinctrl@40ac0000 (fsl,imx7ulp-= iomuxc1): lpuart4grp: 'bias-pull-up' does not match any of the regexes: '^p= inctrl-[0-9]+$' Signed-off-by: Frank Li --- arch/arm/boot/dts/nxp/imx/imx7ulp-evk.dts | 1 - 1 file changed, 1 deletion(-) diff --git a/arch/arm/boot/dts/nxp/imx/imx7ulp-evk.dts b/arch/arm/boot/dts/= nxp/imx/imx7ulp-evk.dts index eff51e113db4f947b7532e2e1fca538da6d74f6c..88d7dc005fa0ea1d91fa561c0c3= e4963c1459481 100644 --- a/arch/arm/boot/dts/nxp/imx/imx7ulp-evk.dts +++ b/arch/arm/boot/dts/nxp/imx/imx7ulp-evk.dts @@ -92,7 +92,6 @@ pinctrl_lpuart4: lpuart4grp { IMX7ULP_PAD_PTC3__LPUART4_RX 0x3 IMX7ULP_PAD_PTC2__LPUART4_TX 0x3 >; - bias-pull-up; }; =20 pinctrl_pwm0: pwm0grp { --=20 2.34.1