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This commit is contained in:
Gregory Nutt 2015-08-22 10:14:36 -06:00
parent 435277ed3a
commit f3f45a8fd8
1 changed files with 17 additions and 2 deletions
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19
configs/samv71-xult/README.txt
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@ -116,6 +116,13 @@ for additional issues specific to a particular configuration.
- This driver does not work reliably with the write back D-Cache. The
write-through D-Cache must be enabled.
- As of this writing (2015-08-22), the USBHS only works in full speed
mode (aka, USBHS Low-Power mode). When configured in normal mode,
SETUP packets are no longer received or responded to; the firmware
only detects bus reset events. This is probably some issue with
480MHZ high speed clock setup, but I have not yet found the issue.
6. The full port for audio support is code complete: WM8904 driver,
SSC/I2C driver, and CS2100-CP driver. But this code is untested. The
WM8904 interface was taken directly from the SAMA5D4-EK and may well
@ -728,6 +735,9 @@ settings:
Device Drivers -> USB Device Driver Support
CONFIG_USBDEV=y : Enable USB device support
For full-speed/low-power mode:
CONFIG_USBDEV_DUALSPEED=n : Disable High speed support
For high-speed/normal mode:
CONFIG_USBDEV_DUALSPEED=y : Enable High speed support
CONFIG_USBDEV_DMA=y : Enable DMA methods
CONFIG_USBDEV_MAXPOWER=100 : Maximum power consumption
@ -737,7 +747,11 @@ settings:
CONFIG_SAMV7_USBDEVHS=y
System Type -> SAMV7 USB High Sppeed Device Controller (DCD options
CONFIG_SAMV7_USBHS_NDTDS=8 : Number of DMA transfer descriptors
For full-speed/low-power mode:
CONFIG_SAMV7_USBDEVHS_LOWPOWER=y : Select low power mode
For high-speed/normal mode:
CONFIG_SAMV7_USBDEVHS_LOWPOWER=n : Don't select low power mode
CONFIG_SAMV7_USBHS_NDTDS=32 : Number of DMA transfer descriptors
CONFIG_SAMV7_USBHS_PREALLOCATE=y : Pre-allocate descriptors
In order to be usable, you must all enabled some class driver(s) for the
@ -756,8 +770,8 @@ serial device class:
CONFIG_CDCACM_EPBULKIN=2 : Bulk IN endpoint number
CONFIG_CDCACM_EPBULKIN_FSSIZE=64 : Full speed packet size
CONFIG_CDCACM_EPBULKIN_HSSIZE=512 : High speed packet size
CONFIG_CDCACM_NRDREQS=4 : Number of read requests
CONFIG_CDCACM_NWRREQS=4 : Number of write requests
CONFIG_CDCACM_NRDREQS=8 : Number of read requests
CONFIG_CDCACM_BULKIN_REQLEN=768 : Size of write request buffer
CONFIG_CDCACM_RXBUFSIZE=256 : Serial read buffer size
CONFIG_CDCACM_TXBUFSIZE=256 : Serial transmit buffer size
@ -774,6 +788,7 @@ CDC/ACM serial device:
CONFIG_SYSTEM_CDCACM=y : Enable connect/disconnect support
CONFIG_SYSTEM_CDCACM_DEVMINOR=0 : Use device /dev/ttyACM0
CONFIG_CDCACM_RXBUFSIZE=??? : A large RX may be needed
If you include this CDC/ACM application, then you can connect the CDC/ACM
serial device to the host by entering the command 'sercon' and you detach