Hi
-----Original Message----- From: Marek Vasut marex@denx.de Sent: Saturday, 22 July, 2023 4:31 AM To: Lim, Jit Loon jit.loon.lim@intel.com; u-boot@lists.denx.de Cc: Jagan Teki jagan@amarulasolutions.com; Simon simon.k.r.goldschmidt@gmail.com; Chee, Tien Fong tien.fong.chee@intel.com; Hea, Kok Kiang kok.kiang.hea@intel.com; Maniyam, Dinesh dinesh.maniyam@intel.com; Ng, Boon Khai boon.khai.ng@intel.com; Yuslaimi, Alif Zakuan alif.zakuan.yuslaimi@intel.com; Chong, Teik Heng teik.heng.chong@intel.com; Zamri, Muhammad Hazim Izzat muhammad.hazim.izzat.zamri@intel.com; Tang, Sieu Mun sieu.mun.tang@intel.com; Bin Meng bmeng.cn@gmail.com; Michal Simek monstr@monstr.eu; Tom Rini trini@konsulko.com; Eugen Hristev eugen.hristev@microchip.com Subject: Re: [PATCH v1] HSD #18028953892: usb: xhci-dwc3: Fix USB3.1 controller register access in reset state
On 7/21/23 05:26, Lim, Jit Loon wrote:
Hi,
Linux: (__dwc3_of_simple_teardown) https://elixir.bootlin.com/linux/latest/source/drivers/usb/dwc3/dwc3 -o f-simple.c#L98 U-Boot: (xhci_dwc3_remove) https://elixir.bootlin.com/u-boot/latest/source/drivers/usb/host/xhc i- dwc3.c#L227
So we believed that we can't directly pickup all Linux kernel dwc3 patches
and merge to U-Boot.
If you were to sync the driver from Linux to U-Boot, then the same sequence as Linux uses would be automatically used too, right ?
Sorry for the abysmal delay in my reply.
Are we saying that we shall port/use Linux driver in U-Boot and abandon
the existing USB host driver in U-Boot?
No, the existing driver in U-Boot is a port of the Linux driver, it is just outdated. I am saying, just pick the missing patches from Linux and add them to U-Boot, so the two drivers are in sync.
We do not see a DWC3 host driver under usb host folder in Linux https://elixir.bootlin.com/linux/latest/source/drivers/usb/host. Would you mind to tell us which DWC3 host driver we should use in usb host folder? Then, we can pick up the missing patches