[U-Boot] [PATCH 3/3] config: enable DFU over USB on Raspberry Pi4 boards

[Jonathan Gray]

On Mon, Sep 16, 2019 at 02:53:30PM +0200, Marek Szyprowski wrote:
> Hi Matthias,
> 
> On 16.09.2019 14:45, Matthias Brugger wrote:
> > On 16/09/2019 14:24, Marek Szyprowski wrote:
> >> Enable support for DFU over USB. This requires to enable USB gadget,
> >> DWC2 UDC OTG driver and DFU command. DFU entities are defined for the
> >> following firmware objects: u-boot.bin, uboot.env and zImage.
> >>
> >> Signed-off-by: Marek Szyprowski <m.szyprowski at samsung.com>
> >> ---
> >>   configs/rpi_4_32b_defconfig | 11 +++++++++++
> >>   include/configs/rpi.h       | 10 ++++++++++
> >>   2 files changed, 21 insertions(+)
> >>
> >> diff --git a/configs/rpi_4_32b_defconfig b/configs/rpi_4_32b_defconfig
> >> index a31a617a5fb..0a375b97369 100644
> >> --- a/configs/rpi_4_32b_defconfig
> >> +++ b/configs/rpi_4_32b_defconfig
> >> @@ -12,6 +12,7 @@ CONFIG_MISC_INIT_R=y
> >>   # CONFIG_DISPLAY_CPUINFO is not set
> >>   # CONFIG_DISPLAY_BOARDINFO is not set
> >>   CONFIG_SYS_PROMPT="U-Boot> "
> >> +CONFIG_CMD_DFU=y
> >>   # CONFIG_CMD_FLASH is not set
> >>   CONFIG_CMD_GPIO=y
> >>   CONFIG_CMD_MMC=y
> >> @@ -19,6 +20,7 @@ CONFIG_CMD_FS_UUID=y
> >>   CONFIG_ENV_FAT_INTERFACE="mmc"
> >>   CONFIG_ENV_FAT_DEVICE_AND_PART="0:1"
> >>   CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG=y
> >> +CONFIG_DFU_MMC=y
> >>   CONFIG_DM_KEYBOARD=y
> >>   CONFIG_DM_MMC=y
> >>   CONFIG_MMC_SDHCI=y
> >> @@ -26,6 +28,15 @@ CONFIG_MMC_SDHCI_BCM2835=y
> >>   CONFIG_PINCTRL=y
> >>   # CONFIG_PINCTRL_GENERIC is not set
> >>   # CONFIG_REQUIRE_SERIAL_CONSOLE is not set
> >> +CONFIG_USB=y
> >> +CONFIG_DM_USB=y
> >> +CONFIG_DM_USB_GADGET=y
> >> +CONFIG_USB_GADGET=y
> >> +CONFIG_USB_GADGET_MANUFACTURER="FSL"
> >> +CONFIG_USB_GADGET_VENDOR_NUM=0x0525
> >> +CONFIG_USB_GADGET_PRODUCT_NUM=0xa4a5
> >> +CONFIG_USB_GADGET_DWC2_OTG=y
> >> +CONFIG_USB_GADGET_DOWNLOAD=y
> > Does this only work on RPi4? It seems to me that this should also be working on
> > the other RPi's. Do you have such HW to test?
> 
> It should work on any RPi with USB device controller available on the 
> micro-usb/c-usb connector. AFAIK, besides RPi4, only some RPi0 has USB 
> device mode available. Other RPi's have USB hub connected to DWC2 
> controller, so switching DWC2 to device mode is not enough to make it 
> working.
> 
> However I have access only to RPi3 and RPi4.

https://www.raspberrypi.org/documentation/hardware/raspberrypi/bootmodes/device.md

	The following devices can boot using USB device boot mode:

	Pi Compute Module
	Pi Compute Module 3
	Pi Zero
	Pi Zero W
	Pi A
	Pi A+
	Pi 3A+