Hi Josua,
On Mon, Feb 19, 2024 at 4:05 PM Josua Mayer <josua@xxxxxxxxxxxxx> wrote:
> HummingBoard-T features two M.2 connectors labeled "M1" and "M2".
> The single SerDes lane of the SoC can be routed to either M1 pci-e
> signals, or M2 usb-3 signals by a gpio-controlled mux.
>
> Add overlays for each configuration.
>
> Signed-off-by: Josua Mayer <josua@xxxxxxxxxxxxx>
Thanks for your patch, which is now commit bbef42084cc170cb ("arm64:
dts: ti: hummingboard-t: add overlays for m.2 pci-e and usb-3") in v6.9.
> --- /dev/null
> +++ b/arch/arm64/boot/dts/ti/k3-am642-hummingboard-t-usb3.dtso
> @@ -0,0 +1,44 @@
> +// SPDX-License-Identifier: GPL-2.0+
> +/*
> + * Copyright (C) 2023 Josua Mayer <josua@xxxxxxxxxxxxx>
> + *
> + * Overlay for SolidRun AM642 HummingBoard-T to enable USB-3.1.
> + */
> +
> +/dts-v1/;
> +/plugin/;
> +
> +#include <dt-bindings/phy/phy.h>
> +
> +#include "k3-serdes.h"
> +
> +&serdes0 {
> + #address-cells = <1>;
> + #size-cells = <0>;
> +
> + serdes0_link: phy@0 {
> + reg = <0>;
> + cdns,num-lanes = <1>;
> + cdns,phy-type = <PHY_TYPE_USB3>;
> + #phy-cells = <0>;
> + resets = <&serdes_wiz0 1>;
> + };
> +};
> +
> +&serdes_ln_ctrl {
> + idle-states = <AM64_SERDES0_LANE0_USB>;
> +};
> +
> +&serdes_mux {
> + idle-state = <0>;
> +};
> +
> +&usbss0 {
> + /delete-property/ ti,usb2-only;
/delete-property/ (and /delete-node/) to delete something in the base DTS
does not work.
> +};
> +
> +&usb0 {
> + maximum-speed = "super-speed";
> + phys = <&serdes0_link>;
> + phy-names = "cdns3,usb3-phy";
> +};
You can run
dtx_diff --color arch/arm64/boot/dts/ti/k3-am642-hummingboard-t{,-usb3}.dtb
to verify.
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
