[PATCH] USB: dwc2: allow usb start even if usbphy is not found
Marius Dinu
m95d+git at psihoexpert.ro
Tue Mar 17 08:37:35 CET 2026
On Mon, 2026-03-16 22.41.08 ++0100, Jonas Karlman wrote:
> I did a new runtime test on a Tinker Board R2.0 using master with
> tinker-rk3288_defconfig and I am not able to reproduce any issue. Maybe
> your config changes introduce a condition that causes an issue? Please
> share your savedefconfig.
>
>
> I have re-run some tests with different Kconfig options related to
> GADGET and DWC2 and are not able to reproduce your issue.
>
> As mentioned above, please share your config changes compared to tinker
> defconfig, maybe you have some Kconfig option enabled that make DWC2
> work differently?
>
>
> U-Boot SPL 2026.04-rc4-00007-g010855c5005e (Mar 16 2026 - 21:33:53 +0000)
> Trying to boot from RAM
> ## Checking hash(es) for config conf-1 ... OK
> ## Checking hash(es) for Image firmware-1 ... crc32+ OK
> ## Checking hash(es) for Image fdt-1 ... crc32+ OK
> spl_perform_arch_fixups: could not map BootROM boot device to ofpath
>
>
> U-Boot 2026.04-rc4-00007-g010855c5005e (Mar 16 2026 - 21:33:53 +0000)
>
> SoC: Rockchip rk3288
> Reset cause: POR
> Model: Rockchip RK3288 Asus Tinker Board
> DRAM: 2 GiB
> PMIC: RK808
> Core: 221 devices, 27 uclasses, devicetree: separate
> MMC: mmc at ff0c0000: 1, mmc at ff0d0000: 2
> Loading Environment from MMC... Card did not respond to voltage select! : -110
> *** Warning - No block device, using default environment
>
> In: serial,usbkbd
> Out: serial,vidconsole
> Err: serial,vidconsole
> Net: eth0: ethernet at ff290000
>
> Hit any key to stop autoboot: 0
> => usb start
> starting USB...
> USB DWC2
> USB DWC2
> Bus usb at ff540000: 2 USB Device(s) found
> Bus usb at ff580000: 1 USB Device(s) found
> scanning usb for storage devices... 0 Storage Device(s) found
> => usb tree
> USB device tree:
> 1 Hub (480 Mb/s, 0mA)
> | U-Boot Root Hub
> |
> +-2 Hub (480 Mb/s, 100mA)
> USB2.0 Hub
>
> 1 Hub (480 Mb/s, 0mA)
> U-Boot Root Hub
>
> => dm tree -e usb
> Class Seq Probed Driver Name
> -----------------------------------------------------------
> usb 0 [ + ] dwc2_usb usb at ff540000
> usb_hub 0 [ + ] usb_hub `-- usb_hub
> usb_hub 1 [ + ] usb_hub `-- usb_hub
> usb 1 [ + ] dwc2_usb usb at ff580000
> usb_hub 2 [ + ] usb_hub `-- usb_hub
> pinconfig 130 [ ] pinconfig usb
> pinconfig 131 [ ] pinconfig |-- host-vbus-drv
> pinconfig 132 [ ] pinconfig `-- pwr-3g
> =>
>
> Regards,
> Jonas
That's strage and unexpected... I'll try to start again from defconfig.
My current config:
CONFIG_ARM=y
CONFIG_SPL_SKIP_LOWLEVEL_INIT_ONLY=y
CONFIG_TPL_SKIP_LOWLEVEL_INIT_ONLY=y
CONFIG_DRIVER_GICV2=y
CONFIG_ARCH_CPU_INIT=y
CONFIG_SYS_ARCH_TIMER=y
CONFIG_ARCH_ROCKCHIP=y
CONFIG_TEXT_BASE=0x01000000
CONFIG_SYS_MALLOC_F_LEN=0x4000
CONFIG_SPL_GPIO=y
CONFIG_NR_DRAM_BANKS=1
CONFIG_CUSTOM_SYS_INIT_SP_ADDR=0x100000
CONFIG_ENV_SIZE=0x4000
# CONFIG_SPL_DM_SPI is not set
CONFIG_DEFAULT_DEVICE_TREE="rockchip/rk3288-tinker-s"
CONFIG_OF_LIBFDT_OVERLAY=y
CONFIG_DM_RESET=y
CONFIG_SYS_MONITOR_LEN=614400
CONFIG_ROCKCHIP_RK3288=y
CONFIG_ROCKCHIP_SPL_RESERVE_IRAM=0
# CONFIG_ROCKCHIP_DISABLE_FORCE_JTAG is not set
CONFIG_TPL_LDSCRIPT="arch/arm/mach-rockchip/u-boot-tpl.lds"
CONFIG_TPL_SYS_MALLOC_F_LEN=0x4000
CONFIG_TARGET_TINKER_RK3288=y
# CONFIG_SPL_DRIVERS_MISC is not set
CONFIG_BOOTCOUNT_BOOTLIMIT=3
CONFIG_SPL_TEXT_BASE=0x0
CONFIG_SYS_BOOTM_LEN=0x4000000
CONFIG_SYS_LOAD_ADDR=0x800800
CONFIG_WATCHDOG_TIMEOUT_MSECS=120000
CONFIG_SPL_SIZE_LIMIT=0x4b000
CONFIG_SPL_SIZE_LIMIT_PROVIDE_STACK=0
CONFIG_PRE_CON_BUF_SZ=65536
CONFIG_DEBUG_UART_BASE=0xff690000
CONFIG_DEBUG_UART_CLOCK=24000000
CONFIG_IDENT_STRING="-M95D"
CONFIG_DEBUG_UART=y
CONFIG_LOCALVERSION="-M95D"
CONFIG_CC_OPTIMIZE_FOR_SPEED=y
CONFIG_HAS_BOARD_SIZE_LIMIT=y
CONFIG_BOARD_SIZE_LIMIT=12582912
CONFIG_DYNAMIC_SYS_CLK_FREQ=y
# CONFIG_EFI_LOADER is not set
CONFIG_TIMESTAMP=y
# CONFIG_BOOTSTD_DEFAULTS is not set
# CONFIG_BOOTSTD_BOOTCOMMAND is not set
# CONFIG_TPL_BOOTMETH_VBE is not set
CONFIG_BOOTDELAY=3
CONFIG_OF_ENV_SETUP=y
# CONFIG_ARCH_FIXUP_FDT_MEMORY is not set
CONFIG_USE_BOOTARGS=y
CONFIG_BOOTARGS="earlyprintk console=ttyS2,115200 rootwait root=PARTUUID=3c6300ea-04"
CONFIG_BOOTARGS_SUBST=y
CONFIG_USE_BOOTCOMMAND=y
CONFIG_BOOTCOMMAND="sysboot mmc 1:3 any 0x02000000 /extlinux/extlinux.conf"
CONFIG_USE_PREBOOT=y
CONFIG_PREBOOT=""
CONFIG_DEFAULT_FDT_FILE="rk3288-tinker-s.dtb"
CONFIG_LOGLEVEL=6
CONFIG_CONSOLE_FLUSH_ON_NEWLINE=y
# CONFIG_SYS_DEVICE_NULLDEV is not set
CONFIG_LOGF_FILE=y
CONFIG_LOGF_LINE=y
CONFIG_LOGF_FUNC=y
CONFIG_DISPLAY_BOARDINFO_LATE=y
CONFIG_MISC_INIT_R=y
CONFIG_SPL_NO_BSS_LIMIT=y
CONFIG_SPL_SHOW_ERRORS=y
# CONFIG_SPL_BINMAN_SYMBOLS is not set
CONFIG_SPL_I2C=y
# CONFIG_SYS_MMCSD_FS_BOOT is not set
CONFIG_SPL_POWER=y
# CONFIG_TPL_BINMAN_SYMBOLS is not set
# CONFIG_TPL_SYS_MALLOC_SIMPLE is not set
# CONFIG_TPL_DRIVERS_MISC is not set
CONFIG_HUSH_PARSER=y
CONFIG_SYS_MAXARGS=16
CONFIG_CMD_BDINFO_EXTRA=y
CONFIG_CMD_CONFIG=y
CONFIG_CMD_UFETCH=y
CONFIG_CMD_HISTORY=y
# CONFIG_CMD_HISTORY_USE_CALLOC is not set
CONFIG_CMD_BOOTDEV=y
CONFIG_CMD_BOOTMETH=y
CONFIG_CMD_BOOTSTD=y
CONFIG_CMD_BOOTZ=y
# CONFIG_BOOTM_NETBSD is not set
# CONFIG_BOOTM_PLAN9 is not set
# CONFIG_BOOTM_RTEMS is not set
# CONFIG_BOOTM_VXWORKS is not set
CONFIG_CMD_BOOTMENU=y
CONFIG_CMD_ADTIMG=y
# CONFIG_CMD_ELF is not set
# CONFIG_CMD_GO is not set
# CONFIG_CMD_XIMG is not set
CONFIG_CMD_ASKENV=y
CONFIG_CMD_GREPENV=y
CONFIG_CMD_ERASEENV=y
CONFIG_CMD_ENV_FLAGS=y
CONFIG_CMD_NVEDIT_INDIRECT=y
CONFIG_CMD_NVEDIT_INFO=y
CONFIG_CMD_NVEDIT_LOAD=y
CONFIG_CRC32_VERIFY=y
CONFIG_CMD_EEPROM=y
CONFIG_CMD_EEPROM_LAYOUT=y
CONFIG_SYS_I2C_EEPROM_BUS=2
CONFIG_CMD_MEMINFO=y
CONFIG_CMD_MEMINFO_MAP=y
# CONFIG_CMD_RANDOM is not set
CONFIG_CMD_CLK=y
CONFIG_CMD_GPIO=y
CONFIG_CMD_GPIO_READ=y
CONFIG_CMD_I2C=y
# CONFIG_CMD_LOADB is not set
# CONFIG_CMD_LOADS is not set
CONFIG_CMD_LSBLK=y
CONFIG_CMD_MISC=y
CONFIG_CMD_MMC=y
CONFIG_MMC_SPEED_MODE_SET=y
CONFIG_CMD_PART=y
# CONFIG_CMD_PINMUX is not set
CONFIG_CMD_POWEROFF=y
CONFIG_CMD_SDRAM=y
CONFIG_CMD_USB=y
CONFIG_CMD_WDT=y
CONFIG_CMD_CAT=y
# CONFIG_CMD_SETEXPR is not set
CONFIG_BOOTP_MAY_FAIL=y
# CONFIG_BOOTP_DNS is not set
# CONFIG_BOOTP_GATEWAY is not set
# CONFIG_BOOTP_HOSTNAME is not set
# CONFIG_BOOTP_PXE_DHCP_OPTION is not set
CONFIG_CMD_TFTPPUT=y
CONFIG_CMD_TFTPSRV=y
CONFIG_CMD_NFS=y
CONFIG_CMD_DHCP=y
CONFIG_CMD_PING=y
CONFIG_CMD_PXE=y
CONFIG_CMD_BOOTCOUNT=y
# CONFIG_CMD_BLOCK_CACHE is not set
CONFIG_CMD_TIMER=y
CONFIG_CMD_SYSBOOT=y
CONFIG_CMD_PMIC=y
CONFIG_CMD_REGULATOR=y
CONFIG_CMD_EXT2=y
CONFIG_CMD_EXT4=y
CONFIG_CMD_EXT4_WRITE=y
CONFIG_CMD_FAT=y
CONFIG_CMD_FS_GENERIC=y
# CONFIG_CMD_CYCLIC is not set
CONFIG_CMD_LOG=y
# CONFIG_SPL_DOS_PARTITION is not set
CONFIG_SPL_OF_CONTROL=y
CONFIG_OF_LIVE=y
CONFIG_OF_UPSTREAM=y
CONFIG_OF_SPL_REMOVE_PROPS="clock-names interrupt-parent assigned-clocks assigned-clock-rates assigned-clock-parents"
CONFIG_OF_DTB_PROPS_REMOVE=y
CONFIG_ENV_OVERWRITE=y
CONFIG_ENV_IS_IN_EXT4=y
CONFIG_ENV_EXT4_INTERFACE="mmc"
CONFIG_ENV_EXT4_DEVICE_AND_PART=":3"
CONFIG_ENV_MMC_DEVICE_INDEX=1
CONFIG_USE_HOSTNAME=y
CONFIG_HOSTNAME="TkB"
CONFIG_NET_RETRY_COUNT=3
CONFIG_TFTP_TSIZE=y
CONFIG_UDP_CHECKSUM=y
CONFIG_BOOTP_SERVERIP=y
CONFIG_USE_IPADDR=y
CONFIG_IPADDR="172.27.143.5"
CONFIG_USE_NETMASK=y
CONFIG_NETMASK="255.255.255.0"
CONFIG_NET_RANDOM_ETHADDR=y
CONFIG_SYS_RX_ETH_BUFFER=8
CONFIG_REGMAP=y
CONFIG_SPL_REGMAP=y
CONFIG_SYSCON=y
CONFIG_SPL_SYSCON=y
# CONFIG_SIMPLE_BUS is not set
# CONFIG_SPL_SIMPLE_BUS is not set
# CONFIG_OF_TRANSLATE is not set
# CONFIG_ADC is not set
CONFIG_BOOTCOUNT_LIMIT=y
CONFIG_BOOTCOUNT_ENV=y
CONFIG_BOOTCOUNT_ALTBOOTCMD="ext2load mmc 1:3 $kernel_addr_r vmlinuz.failsafe; ext2load mmc 1:3 $fdt_addr_r $fdtfile.failsafe; bootz $kernel_addr_r - $fdt_addr_r"
CONFIG_SYS_BOOTCOUNT_MAGIC=0xB007C047
CONFIG_BUTTON=y
CONFIG_BUTTON_GPIO=y
CONFIG_CLK=y
CONFIG_SPL_CLK=y
CONFIG_EXTCON=y
CONFIG_ROCKCHIP_GPIO=y
CONFIG_SYS_I2C_ROCKCHIP=y
CONFIG_LED=y
CONFIG_LED_BOOT=y
CONFIG_LED_ACTIVITY=y
CONFIG_LED_SW_BLINK=y
CONFIG_LED_GPIO=y
CONFIG_MEMORY=y
CONFIG_MISC=y
# CONFIG_SPL_MISC is not set
# CONFIG_TPL_MISC is not set
CONFIG_ROCKCHIP_EFUSE=y
CONFIG_PWRSEQ=y
CONFIG_I2C_EEPROM=y
CONFIG_MMC_PWRSEQ=y
CONFIG_MMC_BROKEN_CD=y
CONFIG_SUPPORT_EMMC_BOOT=y
CONFIG_MMC_IO_VOLTAGE=y
CONFIG_MMC_UHS_SUPPORT=y
CONFIG_MMC_HS400_ES_SUPPORT=y
CONFIG_MMC_HS400_SUPPORT=y
CONFIG_MMC_DW=y
CONFIG_MMC_DW_ROCKCHIP=y
# CONFIG_MTD is not set
CONFIG_PHY_GIGE=y
CONFIG_ETH_DESIGNWARE=y
CONFIG_GMAC_ROCKCHIP=y
CONFIG_PHY_ROCKCHIP_INNO_DSIDPHY=y
CONFIG_PHY_ROCKCHIP_INNO_HDMI=y
CONFIG_PINCTRL=y
# CONFIG_PINMUX is not set
CONFIG_PINCONF=y
CONFIG_SPL_PINCTRL=y
# CONFIG_SPL_PINCTRL_FULL is not set
CONFIG_DM_PMIC=y
CONFIG_PMIC_RK8XX=y
CONFIG_SPL_PMIC_RK8XX=y
CONFIG_SPL_DM_REGULATOR=y
CONFIG_DM_REGULATOR_FIXED=y
CONFIG_SPL_DM_REGULATOR_FIXED=y
CONFIG_REGULATOR_RK8XX=y
# CONFIG_DM_PWM is not set
CONFIG_RAM=y
CONFIG_SPL_RAM=y
# CONFIG_RAM_ROCKCHIP_DEBUG is not set
CONFIG_SERIAL_PUTS=y
CONFIG_DEBUG_UART_SHIFT=2
CONFIG_DEBUG_UART_ANNOUNCE=y
CONFIG_SYS_NS16550_MEM32=y
# CONFIG_SPI is not set
CONFIG_SYSRESET=y
CONFIG_USB=y
# CONFIG_SPL_DM_USB is not set
CONFIG_USB_DWC2=y
CONFIG_ROCKCHIP_USB2_PHY=y
CONFIG_USB_STORAGE=y
CONFIG_USB_KEYBOARD=y
CONFIG_USB_KEYBOARD_FN_KEYS=y
CONFIG_VIDEO=y
CONFIG_VIDEO_PCI_DEFAULT_FB_SIZE=0x1FA4000
CONFIG_VIDEO_COPY=y
CONFIG_VIDEO_ANSI=y
CONFIG_I2C_EDID_STANDARD=y
CONFIG_DISPLAY=y
CONFIG_VIDEO_ROCKCHIP=y
CONFIG_DISPLAY_ROCKCHIP_LVDS=y
CONFIG_DISPLAY_ROCKCHIP_HDMI=y
CONFIG_DISPLAY_ROCKCHIP_MIPI=y
CONFIG_DISPLAY_ROCKCHIP_DW_MIPI=y
CONFIG_VIDEO_BRIDGE=y
CONFIG_VIDEO_BRIDGE_LVDS_CODEC=y
CONFIG_CONSOLE_SCROLL_LINES=8
CONFIG_DESIGNWARE_WATCHDOG=y
CONFIG_WDT=y
CONFIG_FAT_RENAME=y
# CONFIG_BINMAN_FDT is not set
CONFIG_CC_OPTIMIZE_LIBS_FOR_SPEED=y
# CONFIG_REGEX is not set
# CONFIG_SPL_SHA1 is not set
CONFIG_ERRNO_STR=y
CONFIG_OF_LIBFDT_ASSUME_MASK=0
# CONFIG_TPL_OF_LIBFDT is not set
# CONFIG_TOOLS_LIBCRYPTO is not set
# CONFIG_TOOLS_KWBIMAGE is not set
Marius
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