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

Pali Rohár
2020-11-29T16:46:05Z

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.

Pali Roh?r (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

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2.20.1