Hi Wolfram, On Mon, Jun 13, 2022 at 3:49 PM Wolfram Sang <wsa+renesas@xxxxxxxxxxxxxxxxxxxx> wrote: > The schematics label it as SCIF0 debug port. > > Signed-off-by: Wolfram Sang <wsa+renesas@xxxxxxxxxxxxxxxxxxxx> Thanks for your patch! > --- a/arch/arm64/boot/dts/renesas/r8a779f0-spider-cpu.dtsi > +++ b/arch/arm64/boot/dts/renesas/r8a779f0-spider-cpu.dtsi > @@ -68,6 +68,11 @@ i2c4_pins: i2c4 { > function = "i2c4"; > }; > > + scif0_pins: scif0 { > + groups = "scif0_data", "scif0_ctrl"; > + function = "scif0"; > + }; > + > scif_clk_pins: scif_clk { > groups = "scif_clk"; > function = "scif_clk"; > @@ -79,6 +84,14 @@ &rwdt { > status = "okay"; > }; > > +&scif0 { > + pinctrl-0 = <&scif0_pins>; > + pinctrl-names = "default"; > + > + uart-has-rtscts; > + status = "okay"; > +}; > + > &scif_clk { > clock-frequency = <24000000>; > }; This needs a new serial alias under /aliases. Mixing dynamic and static serial IDs may cause conflicts, cfr. commit 7678f4c20fa7670f ("serial: sh-sci: Add support for dynamic instances"). Gr{oetje,eeting}s, Geert -- Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx In personal conversations with technical people, I call myself a hacker. But when I'm talking to journalists I just say "programmer" or something like that. -- Linus Torvalds