[PATCH v3 09/12] usb: make dwc2_usb available in SPL

[Jonas Karlman]

Hi Johan,

On 5/31/2026 11:03 PM, Johan Jonker wrote:
> Make the dwc2_usb driver available in SPL to load U-boot (full)
> from a USB disk.

This seem to make it possible to disable inclusion of USB_DWC2 in SPL,
not make it available. It already looks to be available in SPL?

> 
> Signed-off-by: Johan Jonker <jbx6244 at gmail.com>
> ---
>  drivers/Makefile            |  3 ++-
>  drivers/usb/common/Makefile |  2 +-
>  drivers/usb/host/Kconfig    | 11 +++++++++++
>  drivers/usb/host/Makefile   |  2 +-
>  4 files changed, 15 insertions(+), 3 deletions(-)
> 
> diff --git a/drivers/Makefile b/drivers/Makefile
> index 43d0ba332818..87f755d8a35b 100644
> --- a/drivers/Makefile
> +++ b/drivers/Makefile
> @@ -68,8 +68,9 @@ obj-$(CONFIG_SPL_MUSB_NEW) += usb/musb-new/
>  obj-$(CONFIG_SPL_USB_GADGET) += usb/gadget/
>  obj-$(CONFIG_SPL_USB_GADGET) += usb/common/
>  obj-$(CONFIG_SPL_USB_GADGET) += usb/gadget/udc/
> -obj-$(CONFIG_SPL_WATCHDOG) += watchdog/
> +obj-$(CONFIG_SPL_USB_HOST) += usb/common/
>  obj-$(CONFIG_SPL_USB_HOST) += usb/host/
> +obj-$(CONFIG_SPL_WATCHDOG) += watchdog/
>  obj-$(CONFIG_SPL_SATA) += ata/ scsi/
>  obj-$(CONFIG_SPL_LEGACY_BLOCK) += block/
>  obj-$(CONFIG_SPL_THERMAL) += thermal/
> diff --git a/drivers/usb/common/Makefile b/drivers/usb/common/Makefile
> index db8f35c10c4f..5350cd668d03 100644
> --- a/drivers/usb/common/Makefile
> +++ b/drivers/usb/common/Makefile
> @@ -4,7 +4,7 @@
>  #
> 
>  obj-$(CONFIG_$(PHASE_)DM_USB) += common.o
> -obj-$(CONFIG_USB_DWC2) += dwc2_core.o
> +obj-$(CONFIG_$(PHASE_)USB_DWC2) += dwc2_core.o
>  obj-$(CONFIG_USB_GADGET_DWC2_OTG) += dwc2_core.o
>  obj-$(CONFIG_USB_ISP1760) += usb_urb.o
>  obj-$(CONFIG_USB_MUSB_HOST) += usb_urb.o
> diff --git a/drivers/usb/host/Kconfig b/drivers/usb/host/Kconfig
> index d75883e28650..4fbca2886096 100644
> --- a/drivers/usb/host/Kconfig
> +++ b/drivers/usb/host/Kconfig
> @@ -417,6 +417,17 @@ config USB_DWC2
>  	  operation is compliant to the controller Supplement. If you want to
>  	  enable this controller in host mode, say Y.
> 
> +config SPL_USB_DWC2
> +	bool "DesignWare USB2 Core support in SPL"
> +	depends on SPL_DM && SPL_OF_CONTROL

This should likely be default USB_DWC2 to not break any existing
platform/device already using this in SPL.

> +	select SPL_USB_HOST
> +	---help---

Please use plain help keyword, use of --help-- is deprecated.

Regards,
Jonas

> +	  The DesignWare USB 2.0 controller is compliant with the
> +	  USB-Implementers Forum (USB-IF) USB 2.0 specifications.
> +	  Hi-Speed (480 Mbps), Full-Speed (12 Mbps), and Low-Speed (1.5 Mbps)
> +	  operation is compliant to the controller Supplement. If you want to
> +	  enable this controller in host mode, say Y.
> +
>  if USB_DWC2
>  config USB_DWC2_BUFFER_SIZE
>  	int "Data buffer size in kB"
> diff --git a/drivers/usb/host/Makefile b/drivers/usb/host/Makefile
> index ef4ce62a680c..ec99d0b3882a 100644
> --- a/drivers/usb/host/Makefile
> +++ b/drivers/usb/host/Makefile
> @@ -57,4 +57,4 @@ obj-$(CONFIG_USB_XHCI_RCAR) += xhci-rcar.o
>  obj-$(CONFIG_USB_XHCI_OCTEON) += dwc3-octeon-glue.o
> 
>  # designware
> -obj-$(CONFIG_USB_DWC2) += dwc2.o
> +obj-$(CONFIG_$(PHASE_)USB_DWC2) += dwc2.o
> --
> 2.39.5
>