diff options
| author | Nicholas Chin <nic.c3.14@gmail.com> | 2022-10-10 20:39:03 -0600 |
|---|---|---|
| committer | Kyösti Mälkki <kyosti.malkki@gmail.com> | 2022-11-11 13:33:34 +0000 |
| commit | 81827aad3cf4a65128b8e609b183e8a240d08350 (patch) | |
| tree | 62d5378f378a81ba69955b82f4603e42ff8bb1de /src/drivers/usb/Kconfig | |
| parent | 458751c2d5b5ebfdaa4397be44b2ac6a7fd9c8dc (diff) | |
drivers/usb/gadget.c: Add support for EHCI debug using the WCH CH347
The WCH CH347 presents a USB CDC serial port on interface 4 while in
operating modes 0, 1, and 3. Mode 0 also presents a UART on interface
2 but this is ignored for compatibility with the other modes. Mode 2
uses vendor defined HID usages for communication and is not currently
supported. Like the FT232H the data format is hard coded to 8n1.
Tested using a CH347 breakout board and a Dell Latitude E6400.
Change-Id: Ibd4ad17b7369948003fff7e825b46fe852bc7eb9
Signed-off-by: Nicholas Chin <nic.c3.14@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/68264
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Diffstat (limited to 'src/drivers/usb/Kconfig')
| -rw-r--r-- | src/drivers/usb/Kconfig | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/src/drivers/usb/Kconfig b/src/drivers/usb/Kconfig index 6854c4a6b6..36fda75c8d 100644 --- a/src/drivers/usb/Kconfig +++ b/src/drivers/usb/Kconfig @@ -92,6 +92,14 @@ config USBDEBUG_DONGLE_FTDI_FT232H Use this with FT232H usb-to-uart. Configuration is hard-coded to use 8n1, no flow control. +config USBDEBUG_DONGLE_WCH_CH347 + bool "WCH CH347 UART" + help + Use this with CH347 usb-to-uart. Configuration is hard-coded + to use 8n1, no flow control. For compatibility across modes + 0, 1, and 3, only UART 1 is supported. The UART in mode 2 is + not currently supported. + endchoice config USBDEBUG_DONGLE_FTDI_FT232H_BAUD @@ -104,6 +112,16 @@ config USBDEBUG_DONGLE_FTDI_FT232H_BAUD connection works with it. Multiples of 115,200 seem to be a good choice, and EHCI debug usually can't saturate more than 576,000. +config USBDEBUG_DONGLE_WCH_CH347_BAUD + int "WCH CH347 baud rate" + default 115200 + depends on USBDEBUG_DONGLE_WCH_CH347 + help + Select baud rate for CH347 in the range 1200..9,000,000. Make + sure that your receiving side supports the same setting and your + connection works with it. Multiples of 115,200 seem to be a good + choice, and EHCI debug usually can't saturate more than 576,000. + config USBDEBUG_OPTIONAL_HUB_PORT int default 2 if USBDEBUG_DONGLE_BEAGLEBONE |