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| author |   Gabor Juhos <juhosg@openwrt.org> | 2012-07-17 17:08:31 +0100 |
|---|---|---|
| committer |   Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-07-17 09:16:39 -0700 |
| commit | fde8be29239bf4a4118d918df1b2b8ef7266b1a2 (patch) | |
| tree | cef130bf413458dd2ffb750d451d701965225543 /Documentation/devicetree/bindings/tty | |
| parent | tty: Move the handling of the tty release logic (diff) | |
| download | linux-dev-fde8be29239bf4a4118d918df1b2b8ef7266b1a2.tar.xz linux-dev-fde8be29239bf4a4118d918df1b2b8ef7266b1a2.zip | |
tty: of_serial: add no-loopback-test property
The loopback test mode is not implemented in all
NS16550 compatible UARTs. The 8250 driver uses the
UPF_SKIP_TEST flag to indicate this, however it is
not possible to set this flag via device-tree.
Add a new 'no-loopback-test' property, and modify
the of_serial driver to set the UPF_SKIP_TEST flag
if the property is present.
Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'Documentation/devicetree/bindings/tty')
| -rw-r--r-- | Documentation/devicetree/bindings/tty/serial/of-serial.txt | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/tty/serial/of-serial.txt b/Documentation/devicetree/bindings/tty/serial/of-serial.txt index 0847fdeee11a..ba385f2e0ddc 100644 --- a/Documentation/devicetree/bindings/tty/serial/of-serial.txt +++ b/Documentation/devicetree/bindings/tty/serial/of-serial.txt @@ -25,6 +25,8 @@ Optional properties: accesses to the UART (e.g. TI davinci). - used-by-rtas : set to indicate that the port is in use by the OpenFirmware RTAS and should not be registered. +- no-loopback-test: set to indicate that the port does not implements loopback + test mode Example: |