Hi Biju,
On Mon, Mar 20, 2023 at 11:54 AM Biju Das <biju.das.jz@xxxxxxxxxxxxxx> wrote:
> Enable sci0 node using dt overlay and disable can{0,1}-stb-hog
> nodes in dt overlay as its pins are shared with sci0 pins.
>
> Signed-off-by: Biju Das <biju.das.jz@xxxxxxxxxxxxxx>
> ---
> v3:
> * New patch
Thanks for your patch!
> --- /dev/null
> +++ b/arch/arm64/boot/dts/renesas/r9a07g043-smarc.dtso
Can you please come up with a better filename?
Perhaps r9a07g043-smarc-pmod.dtso?
> @@ -0,0 +1,45 @@
> +// SPDX-License-Identifier: GPL-2.0
> +/*
> + * Device Tree Source for the RZ/{G2UL, Five} SMARC EVK PMOD parts
> + *
> + * Copyright (C) 2023 Renesas Electronics Corp.
> + *
> + *
> + * [Connection]
> + *
> + * SMARC EVK PMOD USBUART
> + * +----------------------------+
> + * |CN7 (PMOD1 PIN HEADER) |
> + * | SCI0_TXD pin7 |<----->| pin2 Tx |
> + * | SCI1_RXD pin8 |<----->| pin3 Rx |
> + * | Gnd pin11 |<----->| pin5 Gnd |
> + * | Vcc pin12 |<----->| pin6 Vcc |
> + * +----------------------------+ +---------------+
I don't think the right side of this diagram belongs here. The user
is not limited to a USB-UART bridge, but can connect whatever he wants
to the PMOD connector.
> + *
> + */
> +
> +/dts-v1/;
> +/plugin/;
> +#include <dt-bindings/gpio/gpio.h>
Unused?
> +#include <dt-bindings/pinctrl/rzg2l-pinctrl.h>
> +
> +&pinctrl {
> + can0-stb-hog {
> + status = "disabled";
> + };
> +
> + can1-stb-hog {
> + status = "disabled";
> + };
> +
> + sci0_pins: sci0-pins {
> + pinmux = <RZG2L_PORT_PINMUX(2, 2, 5)>, /* TxD */
> + <RZG2L_PORT_PINMUX(2, 3, 5)>; /* RxD */
> + };
> +};
> +
> +&sci0 {
> + pinctrl-0 = <&sci0_pins>;
> + pinctrl-names = "default";
> + status = "okay";
> +};
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
