[PATCH 00/13] Nokia RX-51: Fix USB TTY console and enable it

[Pali Rohár]

Hello!

On Sunday 17 January 2021 16:07:30 Lokesh Vutla wrote:
> Hi Lukasz,
> 
> On 29/11/20 10:16 pm, Pali Rohár wrote:
> > This patch series fix usbtty code (serial console via USB peripheral
> > mode), fix underlying musb peripheral code, fix compilation of
> > CONFIG_USB_DEVICE (used by usbtty), remove unused Nokia RX-51 code to
> > decrease size of U-Boot binary and finally enable usbtty serial console
> > for Nokia RX-51.
> > 
> > With this patch series debugging of Nokia RX-51 can be done also via USB
> > serial console.
> > 
> > On computer this serial console is accessible via /dev/ttyACM0 device.
> > 
> > With current implementation there is an issue in musb driver that it
> > loose receiving bytes from USB bus when too many a characters are send
> > over USB tty from computer. Typing on keyboard to kermit terminal
> > connected to /dev/ttyACM0 is working fine. But pasting more more bytes
> > to terminal cause data lost on receiving side. I do not know where is
> > the issue or how to fix it (it looks like that data are lost at low
> > level when reading them from msub FIFO hardware) but typing on keyboard
> > is working fine. This is rather issue for sending files via x/y/z-modem
> > or kermit protocol. Currently U-Boot is not able to receive any file
> > via usbtty with musb driver due to this issue.
> 
> Can you take a look at usb related patches and merge them if you are okay with it?
> 
> Thanks and regards,
> Lokesh

I would like to remind this patch series too!

I have not received any negative feedback on it for 2 months and patches
were already reviewed by Pavel.

Could you please merge this patch series?

> > 
> > Pali Rohár (13):
> >   serial: usbtty: Fix puts function
> >   usb: musb: Fix compilation of gadget code
> >   usb: musb: Always clear the data toggle bit when configuring ep
> >   usb: musb: Fix configuring FIFO for endpoints
> >   usb: musb: Read value of PERI_RXCSR to 16bit variable
> >   usb: musb: Fix transmission of bigger buffers
> >   usb: gadget: Do not export usbd_device_* arrays
> >   usb: gadget: Use dbg_ep0() macro instead of serial_printf()
> >   arm: omap3: Compile lowlevel_init() function only when it is used
> >   arm: omap3: Compile s_init() function only when it is used
> >   Nokia RX-51: Remove function set_muxconf_regs()
> >   Nokia RX-51: Move content of rx51.h to rx51.c
> >   Nokia RX-51: Enable usbtty serial console by default
> > 
> >  Makefile                                  |   1 +
> >  arch/arm/mach-omap2/omap3/board.c         |   3 +
> >  arch/arm/mach-omap2/omap3/lowlevel_init.S |   6 +-
> >  board/nokia/rx51/rx51.c                   |  28 +-
> >  board/nokia/rx51/rx51.h                   | 377 ----------------------
> >  configs/nokia_rx51_defconfig              |   6 +-
> >  doc/README.nokia_rx51                     |  15 +-
> >  drivers/serial/usbtty.c                   |   4 +-
> >  drivers/usb/gadget/core.c                 |  38 +--
> >  drivers/usb/gadget/ep0.c                  |  47 ++-
> >  drivers/usb/musb/musb_core.c              |  10 +-
> >  drivers/usb/musb/musb_udc.c               |  19 +-
> >  include/configs/nokia_rx51.h              |  16 +-
> >  include/usbdevice.h                       |  15 -
> >  14 files changed, 92 insertions(+), 493 deletions(-)
> >  delete mode 100644 board/nokia/rx51/rx51.h
> >