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charset="utf-8" From: Peng Fan Enable uart1 for BT usage Configure the clock to source from IMX8MN_SYS_PLL1_80M, because the uart could only support max 1.5M buadrate if using OSC_24M as clock source. Signed-off-by: Peng Fan --- arch/arm64/boot/dts/freescale/imx8mn-evk.dtsi | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) diff --git a/arch/arm64/boot/dts/freescale/imx8mn-evk.dtsi b/arch/arm64/boo= t/dts/freescale/imx8mn-evk.dtsi index 1971f095e4c2..12dc5d398a03 100644 --- a/arch/arm64/boot/dts/freescale/imx8mn-evk.dtsi +++ b/arch/arm64/boot/dts/freescale/imx8mn-evk.dtsi @@ -247,6 +247,15 @@ &spdif1 { status =3D "okay"; }; =20 +&uart1 { /* BT */ + pinctrl-names =3D "default"; + pinctrl-0 =3D <&pinctrl_uart1>; + assigned-clocks =3D <&clk IMX8MN_CLK_UART1>; + assigned-clock-parents =3D <&clk IMX8MN_SYS_PLL1_80M>; + fsl,uart-has-rtscts; + status =3D "okay"; +}; + &uart2 { /* console */ pinctrl-names =3D "default"; pinctrl-0 =3D <&pinctrl_uart2>; @@ -440,6 +449,15 @@ MX8MN_IOMUXC_SD1_STROBE_GPIO2_IO11 0x159 >; }; =20 + pinctrl_uart1: uart1grp { + fsl,pins =3D < + MX8MN_IOMUXC_UART1_RXD_UART1_DCE_RX 0x140 + MX8MN_IOMUXC_UART1_TXD_UART1_DCE_TX 0x140 + MX8MN_IOMUXC_UART3_RXD_UART1_DCE_CTS_B 0x140 + MX8MN_IOMUXC_UART3_TXD_UART1_DCE_RTS_B 0x140 + >; + }; + pinctrl_uart2: uart2grp { fsl,pins =3D < MX8MN_IOMUXC_UART2_RXD_UART2_DCE_RX 0x140 --=20 2.37.1