Merge tag 'renesas-fixes4-for-v4.13' of https://git.kernel.org/pub/scm/linux/kernel...

[karo-tx-linux.git] / Documentation / ABI / testing / sysfs-bus-iio-timer-stm32

diff --git a/Documentation/ABI/testing/sysfs-bus-iio-timer-stm32 b/Documentation/ABI/testing/sysfs-bus-iio-timer-stm32
index 230020e06677d73a2b8b24c031962e3fbda19c45..161c147d3c40323a7f21aa323c27f31efa223f22 100644 (file)
--- a/Documentation/ABI/testing/sysfs-bus-iio-timer-stm32
+++ b/Documentation/ABI/testing/sysfs-bus-iio-timer-stm32
@@ -16,6 +16,54 @@ Description:
                - "OC2REF"    : OC2REF signal is used as trigger output.
                - "OC3REF"    : OC3REF signal is used as trigger output.
                - "OC4REF"    : OC4REF signal is used as trigger output.
                - "OC2REF"    : OC2REF signal is used as trigger output.
                - "OC3REF"    : OC3REF signal is used as trigger output.
                - "OC4REF"    : OC4REF signal is used as trigger output.

+               Additional modes (on TRGO2 only):
+               - "OC5REF"    : OC5REF signal is used as trigger output.
+               - "OC6REF"    : OC6REF signal is used as trigger output.
+               - "compare_pulse_OC4REF":
+                 OC4REF rising or falling edges generate pulses.
+               - "compare_pulse_OC6REF":
+                 OC6REF rising or falling edges generate pulses.
+               - "compare_pulse_OC4REF_r_or_OC6REF_r":
+                 OC4REF or OC6REF rising edges generate pulses.
+               - "compare_pulse_OC4REF_r_or_OC6REF_f":
+                 OC4REF rising or OC6REF falling edges generate pulses.
+               - "compare_pulse_OC5REF_r_or_OC6REF_r":
+                 OC5REF or OC6REF rising edges generate pulses.
+               - "compare_pulse_OC5REF_r_or_OC6REF_f":
+                 OC5REF rising or OC6REF falling edges generate pulses.
+
+               +-----------+   +-------------+            +---------+
+               | Prescaler +-> | Counter     |        +-> | Master  | TRGO(2)
+               +-----------+   +--+--------+-+        |-> | Control +-->
+                                  |        |          ||  +---------+
+                               +--v--------+-+ OCxREF ||  +---------+
+                               | Chx compare +----------> | Output  | ChX
+                               +-----------+-+         |  | Control +-->
+                                     .     |           |  +---------+
+                                     .     |           |    .
+                               +-----------v-+ OC6REF  |    .
+                               | Ch6 compare +---------+>
+                               +-------------+
+
+               Example with: "compare_pulse_OC4REF_r_or_OC6REF_r":
+
+                               X
+                             X   X
+                           X .   . X
+                         X   .   .   X
+                       X     .   .     X
+               count X .     .   .     . X
+                       .     .   .     .
+                       .     .   .     .
+                       +---------------+
+               OC4REF  |     .   .     |
+                     +-+     .   .     +-+
+                       .     +---+     .
+               OC6REF  .     |   |     .
+                     +-------+   +-------+
+                       +-+   +-+
+               TRGO2   | |   | |
+                     +-+ +---+ +---------+

 
 What:          /sys/bus/iio/devices/triggerX/master_mode
 KernelVersion: 4.11
 
 What:          /sys/bus/iio/devices/triggerX/master_mode
 KernelVersion: 4.11


@@ -90,3 +138,18 @@ Description:
                        Counting is enabled on rising edge of the connected
                        trigger, and remains enabled for the duration of this
                        selected mode.
                        Counting is enabled on rising edge of the connected
                        trigger, and remains enabled for the duration of this
                        selected mode.

+
+What:          /sys/bus/iio/devices/iio:deviceX/in_count_trigger_mode_available
+KernelVersion: 4.13
+Contact:       benjamin.gaignard@st.com
+Description:
+               Reading returns the list possible trigger modes.
+
+What:          /sys/bus/iio/devices/iio:deviceX/in_count0_trigger_mode
+KernelVersion: 4.13
+Contact:       benjamin.gaignard@st.com
+Description:
+               Configure the device counter trigger mode
+               counting direction is set by in_count0_count_direction
+               attribute and the counter is clocked by the connected trigger
+               rising edges.