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authorStefan Wahren <stefan.wahren@i2se.com>2017-05-29 14:57:23 +0300
committerDavid S. Miller <davem@davemloft.net>2017-05-30 20:57:31 +0300
commit1820827949201041b233dbe7ac5b5c518944b9dd (patch)
tree507b96ce768b9fadb55741056e2e31a2a26acf69 /Documentation
parent4aab28ca446f39ded6fb60c2344d349fd1771d5e (diff)
downloadlinux-1820827949201041b233dbe7ac5b5c518944b9dd.tar.xz
dt-bindings: slave-device: add current-speed property
This adds a new DT property to define the current baud rate of the slave device. Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com> Reviewed-by: Rob Herring <robh@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'Documentation')
-rw-r--r--Documentation/devicetree/bindings/serial/slave-device.txt9
1 files changed, 9 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/serial/slave-device.txt b/Documentation/devicetree/bindings/serial/slave-device.txt
index f66037928f5f..40110e019620 100644
--- a/Documentation/devicetree/bindings/serial/slave-device.txt
+++ b/Documentation/devicetree/bindings/serial/slave-device.txt
@@ -21,6 +21,15 @@ Optional Properties:
can support. For example, a particular board has some signal
quality issue or the host processor can't support higher
baud rates.
+- current-speed : The current baud rate the device operates at. This should
+ only be present in case a driver has no chance to know
+ the baud rate of the slave device.
+ Examples:
+ * device supports auto-baud
+ * the rate is setup by a bootloader and there is no
+ way to reset the device
+ * device baud rate is configured by its firmware but
+ there is no way to request the actual settings
Example: