Hi Jens, On Thu, 7 May 2026 at 03:28, Jens Wiklander <[email protected]> wrote: > > Hi, > > This is a follow-up to Jerome's patchset [1], addressing previous feedback > regarding the monolithic nature of the driver update. > > The DWC3 USB driver was forked from the Linux kernel v3.19-rc1 eleven years > ago by commit 85d5e7075f33 ("usb: dwc3: add dwc3 folder from linux kernel > to u-boot"). Since then, not many kernel changes have been ported back into > U-Boot. > > This series synchronizes the DWC3 core with Linux v6.16-rc7. To provide > a clear audit trail and maintain bisectability, I have structured the > series as follows: > > 1. Restore to Baseline: The first commit reverts U-Boot-specific changes > to drivers/usb/dwc3 to return the directory to a clean v3.19-rc1 state. > 2. Milestone Imports: A sequence of 50+ commits follows, each performing > a "snapshot" import of the drivers/usb/dwc3 directory for every major > kernel version (v3.19 through v6.16-rc7). > 3. U-Boot Adaptation: The final commits (based on Jerome's original work) > re-introduce the necessary glue code, XHCI/UDC updates, and build fixes > required for U-Boot integration. > > The final diff is identical to [1]. I decided to stick with that for now to > focus on the method of how we import or update the code. > > Note that this is compile-tested only. The CI pipeline on source.denx.de > was used as an OK/NOK indicator [2]. > > The previous patchset was tested on xilinx_zynqmp_kria_defconfig and since > this diff is identical to the previous, it should still work on that > platform. With the help of a custom build script [3] and with an additional > patch [4], I could boot the Kria KV260 board and make it detect a USB SSD > plugged into one of its USB 3.0 ports. It certainly doesn't mean all > platforms using the DWC3 driver are still OK, but at least there is some > hope. If this breaks your platform I'd like to know, and if you can send a > fix it's even better. > > I tried cherry-picking all the 1000+ patches in v3.19-rc1..v6.16-rc7. There > were a few conflicts, even when backing out the original U-Boot patches on > top of the original v3.19-rc1 import. However, the resulting state still > diverged significantly from [1]. > > Instead, I've imported each new kernel in a separate commit. That way it's > very clear which kernel patches are included. Since there aren't too many > patches for each kernel I'm listing the relevant commits in the U-Boot > commit message for easier reference. I did this with a script so it's easy > to make changes, if the approach is OK but we need to tune it. With this > approach it should be easy to tell if a Fixes patch for the kernel might > also be needed here. > > Thanks, > Jens > > [1] > https://lore.kernel.org/all/[email protected]/ > [2] https://source.denx.de/u-boot/custodians/u-boot-tpm/-/pipelines/30004 > [3] > https://source.denx.de/u-boot/u-boot-extras/-/raw/master/contrib/jforissier/zynqmp_kv260_build.sh > [4] > https://gitlab.com/Linaro/trustedsubstrate/meta-ts/-/raw/master/meta-trustedsubstrate/recipes-bsp/u-boot/u-boot/zynqmp-kria-starter/0001-kv260-fix-usb.patch > > RFC v1 -> RFC v2: > - Split the v1 ("usb: dwc3: re-import from kernel v6.16-rc7") into ("usb: > dwc3: restore to original v3.19-rc1 kernel import"), ("usb: dwc3: import > from kernel v3.19)..("usb: dwc3: import from kernel v6.16-rc7") > > Jens Wiklander (60): > usb: dwc3: restore to original v3.19-rc1 kernel import > usb: dwc3: import from kernel v3.19 > usb: dwc3: import from kernel v4.0 > usb: dwc3: import from kernel v4.1 > usb: dwc3: import from kernel v4.2 > usb: dwc3: import from kernel v4.3 > usb: dwc3: import from kernel v4.4 > usb: dwc3: import from kernel v4.5 > usb: dwc3: import from kernel v4.6 > usb: dwc3: import from kernel v4.7 > usb: dwc3: import from kernel v4.8 > usb: dwc3: import from kernel v4.9 > usb: dwc3: import from kernel v4.10 > usb: dwc3: import from kernel v4.11 > usb: dwc3: import from kernel v4.12 > usb: dwc3: import from kernel v4.13 > usb: dwc3: import from kernel v4.14 > usb: dwc3: import from kernel v4.15 > usb: dwc3: import from kernel v4.16 > usb: dwc3: import from kernel v4.17 > usb: dwc3: import from kernel v4.18 > usb: dwc3: import from kernel v4.19 > usb: dwc3: import from kernel v4.20 > usb: dwc3: import from kernel v5.0 > usb: dwc3: import from kernel v5.1 > usb: dwc3: import from kernel v5.2 > usb: dwc3: import from kernel v5.3 > usb: dwc3: import from kernel v5.4 > usb: dwc3: import from kernel v5.5 > usb: dwc3: import from kernel v5.6 > usb: dwc3: import from kernel v5.7 > usb: dwc3: import from kernel v5.8 > usb: dwc3: import from kernel v5.9 > usb: dwc3: import from kernel v5.10 > usb: dwc3: import from kernel v5.11 > usb: dwc3: import from kernel v5.12 > usb: dwc3: import from kernel v5.13 > usb: dwc3: import from kernel v5.14 > usb: dwc3: import from kernel v5.15 > usb: dwc3: import from kernel v5.16 > usb: dwc3: import from kernel v5.17 > usb: dwc3: import from kernel v5.18 > usb: dwc3: import from kernel v5.19 > usb: dwc3: import from kernel v6.0 > usb: dwc3: import from kernel v6.1 > usb: dwc3: import from kernel v6.2 > usb: dwc3: import from kernel v6.3 > usb: dwc3: import from kernel v6.4 > usb: dwc3: import from kernel v6.5 > usb: dwc3: import from kernel v6.6 > usb: dwc3: import from kernel v6.7 > usb: dwc3: import from kernel v6.8 > usb: dwc3: import from kernel v6.9 > usb: dwc3: import from kernel v6.10 > usb: dwc3: import from kernel v6.11 > usb: dwc3: import from kernel v6.12 > usb: dwc3: import from kernel v6.13 > usb: dwc3: import from kernel v6.14 > usb: dwc3: import from kernel v6.15 > usb: dwc3: import from kernel v6.16-rc7 > > Jerome Forissier (4): > usb: host: re-import xhci-ext-caps.h from kernel v6.16-rc7 > usb: gadget: re-import epautoconf.c from kernel v6.16-rc7 > usb: udc: re-import udc-core.c from kernel v6.16-rc7 > usb: fix build after resync of DWC3 with kernel v6.16-rc7 > > drivers/usb/cdns3/ep0.c | 8 +- > drivers/usb/common/common.c | 23 + > drivers/usb/dwc3/Makefile | 57 +- > drivers/usb/dwc3/core.c | 1780 ++++++---- > drivers/usb/dwc3/core.h | 1120 +++++-- > drivers/usb/dwc3/debug.h | 432 +++ > drivers/usb/dwc3/dwc3-omap.c | 2 - > drivers/usb/dwc3/ep0.c | 737 +++-- > drivers/usb/dwc3/gadget.c | 4152 ++++++++++++++++-------- > drivers/usb/dwc3/gadget.h | 124 +- > drivers/usb/dwc3/glue.h | 36 + > drivers/usb/dwc3/io.h | 29 +- > drivers/usb/dwc3/linux-compat.h | 16 - > drivers/usb/dwc3/samsung_usb_phy.c | 77 - > drivers/usb/dwc3/ti_usb_phy.c | 2 - > drivers/usb/gadget/at91_udc.c | 46 - > drivers/usb/gadget/atmel_usba_udc.c | 102 +- > drivers/usb/gadget/ci_udc.c | 419 --- > drivers/usb/gadget/composite.c | 2 +- > drivers/usb/gadget/dwc2_udc_otg.c | 174 +- > drivers/usb/gadget/epautoconf.c | 289 +- > drivers/usb/gadget/ether.c | 21 +- > drivers/usb/gadget/f_acm.c | 20 +- > drivers/usb/gadget/f_fastboot.c | 10 +- > drivers/usb/gadget/f_mass_storage.c | 5 +- > drivers/usb/gadget/f_rockusb.c | 11 +- > drivers/usb/gadget/f_sdp.c | 12 +- > drivers/usb/gadget/f_thor.c | 19 +- > drivers/usb/gadget/udc/Makefile | 1 + > drivers/usb/gadget/udc/udc-core.c | 1096 ++++++- > drivers/usb/host/xhci-dwc3.c | 4 +- > drivers/usb/host/xhci-ext-caps.h | 158 + > drivers/usb/host/xhci-exynos5.c | 2 +- > drivers/usb/mtu3/mtu3_gadget_ep0.c | 16 +- > drivers/usb/musb-new/musb_gadget_ep0.c | 24 +- > drivers/usb/musb-new/musb_uboot.c | 39 - > include/dm/device_compat.h | 13 + > include/dm/read.h | 46 + > include/linux/compat.h | 15 + > include/linux/usb/ch9.h | 25 +- > include/linux/usb/gadget.h | 520 +-- > include/linux/usb/otg.h | 10 + > include/linux/usb/phy.h | 56 + > 43 files changed, 7659 insertions(+), 4091 deletions(-) > create mode 100644 drivers/usb/dwc3/debug.h > create mode 100644 drivers/usb/dwc3/glue.h > delete mode 100644 drivers/usb/dwc3/linux-compat.h > delete mode 100644 drivers/usb/dwc3/samsung_usb_phy.c > create mode 100644 drivers/usb/host/xhci-ext-caps.h > > > base-commit: 0f865ab5d68484b4dc1724809de1be06edc85df1 > -- > 2.43.0 >
This makes me wonder what USB tests we have. Some boards use USB for Ethernet, but are there any storage tests, etc.? Regards, Simon
