summaryrefslogtreecommitdiffstats
path: root/Documentation/ABI/testing/sysfs-platform-kim
diff options
context:
space:
mode:
authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
commit2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch)
tree848558de17fb3008cdf4d861b01ac7781903ce39 /Documentation/ABI/testing/sysfs-platform-kim
parentInitial commit. (diff)
downloadlinux-upstream.tar.xz
linux-upstream.zip
Adding upstream version 6.1.76.upstream/6.1.76upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'Documentation/ABI/testing/sysfs-platform-kim')
-rw-r--r--Documentation/ABI/testing/sysfs-platform-kim49
1 files changed, 49 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/sysfs-platform-kim b/Documentation/ABI/testing/sysfs-platform-kim
new file mode 100644
index 000000000..6a52d6d2b
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-platform-kim
@@ -0,0 +1,49 @@
+What: /sys/devices/platform/kim/dev_name
+Date: January 2010
+KernelVersion: 2.6.38
+Contact: "Pavan Savoy" <pavan_savoy@ti.com>
+Description:
+ Name of the UART device at which the WL128x chip
+ is connected. example: "/dev/ttyS0".
+
+ The device name flows down to architecture specific board
+ initialization file from the ATAGS bootloader
+ firmware. The name exposed is read from the user-space
+ dameon and opens the device when install is requested.
+
+What: /sys/devices/platform/kim/baud_rate
+Date: January 2010
+KernelVersion: 2.6.38
+Contact: "Pavan Savoy" <pavan_savoy@ti.com>
+Description:
+ The maximum reliable baud-rate the host can support.
+ Different platforms tend to have different high-speed
+ UART configurations, so the baud-rate needs to be set
+ locally and also sent across to the WL128x via a HCI-VS
+ command. The entry is read and made use by the user-space
+ daemon when the ldisc install is requested.
+
+What: /sys/devices/platform/kim/flow_cntrl
+Date: January 2010
+KernelVersion: 2.6.38
+Contact: "Pavan Savoy" <pavan_savoy@ti.com>
+Description:
+ The WL128x makes use of flow control mechanism, and this
+ entry most often should be 1, the host's UART is required
+ to have the capability of flow-control, or else this
+ entry can be made use of for exceptions.
+
+What: /sys/devices/platform/kim/install
+Date: January 2010
+KernelVersion: 2.6.38
+Contact: "Pavan Savoy" <pavan_savoy@ti.com>
+Description:
+ When one of the protocols Bluetooth, FM or GPS wants to make
+ use of the shared UART transport, it registers to the shared
+ transport driver, which will signal the user-space for opening,
+ configuring baud and install line discipline via this sysfs
+ entry. This entry would be polled upon by the user-space
+ daemon managing the UART, and is notified about the change
+ by the sysfs_notify. The value would be '1' when UART needs
+ to be opened/ldisc installed, and would be '0' when UART
+ is no more required and needs to be closed.