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authorGreg Kroah-Hartman <gregkh@linuxfoundation.org>2016-09-14 20:42:03 +0200
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2016-09-14 20:42:03 +0200
commit552edf8d79096c7458cdc2a7b1f9936e7925e2aa (patch)
treee069ed3ec2fc7ef77a98645aa0f5ef84e1c83881 /Documentation/devicetree/bindings/iio
parentstaging: fwserial: fix checkpatch permission warnings (diff)
parentiio: accel: mxc6255: Fix chip-id check (diff)
downloadlinux-552edf8d79096c7458cdc2a7b1f9936e7925e2aa.tar.xz
linux-552edf8d79096c7458cdc2a7b1f9936e7925e2aa.zip
Merge tag 'iio-for-4.9b' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-next
Jonathan writes: Second set of iio new device support, features and cleanups for the 4.9 cycle. New device support * ad8801 dac - new driver supporting ad8801 and ad8803 DACs. * adc12138 - new driver supporting TI adc12130/adc12132 and adc12138 ADCs. * ltc2485 adc - new driver * mxc6255 - add support for the mxc6225 part name and fixup the ID check so it works. * vz89x VOC sensor - add support for the vz89te part which drops the voc_short channel and adds CRCs compared to other supported parts. New features * core - immutable triggers. These effectively grant exclusive control over a trigger. The typical usecase is a device representing an analog part (perhaps a MUX) that needs to control the sampling of a downstream ADC. - resource managed trigger registration and triggered_buffer_init. - iio_push_event now protected against case of the event interface registration not having yet occured. Only matters if an interrupt can occur during this window - might happen on shared interrupt lines. - helper to let a driver query if the trigger it is using is provided by itself (using the convention of both device and trigger having the same parent). * tools - iio-utils. Used channel modifier scaling in preference to generic scaling when both exist. * at91-adc - Add support for touchscreen switches closure time needed by some newer parts. * stx104 - support the ADC channels on this ADC/DAC board. As these are the primary feature of the board also move the driver to the iio/adc directory. * sx9500 - device tree bindings. Cleanups / Fixes * ad5755 - fix an off-by-one on devnr limit check (introduced earlier this cycle) * ad7266 - drop NULL check on devm_regulator_get_optional as it can't return NULL. * ak8974 - avoid an unused functional warning due to rework in PM core code. - remove .owner field setting as done by i2c_core. * ina2xx - clear out a left over debug field from chip global data. * hid-sensors - avoid an unused functional warning due to rework in PM core code. * maxim-thermocouple - fix non static symbol warnings. * ms5611 - fetch and enable regulators unconditionally when they aren't optional. * sca3000 - whitespace cleanup. * st_sensors - fetch and enable regulators unconditionally rather than having them supported as optional regulators (missunderstanding on my part amongst others a while back) - followup to previous patch fixes error checking on the regulators. - mark symbols static where possible. - use the 'is it my trigger' help function. This prevents the odd case of another device triggering from the st-sensors trigger whilst the st-sensors trigger is itself not using it but rather using say an hrtimer. * ti-ads1015 - add missing of_node_put. * vz89x - rework to all support of new devices. - prevent reading of a corrupted buffer. - fixup a return value of 0/1 in a bool returning function. Address updates - Vlad Dogaru email address change.
Diffstat (limited to 'Documentation/devicetree/bindings/iio')
-rw-r--r--Documentation/devicetree/bindings/iio/adc/ti-adc12138.txt37
-rw-r--r--Documentation/devicetree/bindings/iio/proximity/sx9500.txt24
2 files changed, 61 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/iio/adc/ti-adc12138.txt b/Documentation/devicetree/bindings/iio/adc/ti-adc12138.txt
new file mode 100644
index 000000000000..049a1d36f013
--- /dev/null
+++ b/Documentation/devicetree/bindings/iio/adc/ti-adc12138.txt
@@ -0,0 +1,37 @@
+* Texas Instruments' ADC12130/ADC12132/ADC12138
+
+Required properties:
+ - compatible: Should be one of
+ * "ti,adc12130"
+ * "ti,adc12132"
+ * "ti,adc12138"
+ - reg: SPI chip select number for the device
+ - interrupts: Should contain interrupt for EOC (end of conversion)
+ - clocks: phandle to conversion clock input
+ - spi-max-frequency: Definision as per
+ Documentation/devicetree/bindings/spi/spi-bus.txt
+ - vref-p-supply: The regulator supply for positive analog voltage reference
+
+Optional properties:
+ - vref-n-supply: The regulator supply for negative analog voltage reference
+ (Note that this must not go below GND or exceed vref-p)
+ If not specified, this is assumed to be analog ground.
+ - ti,acquisition-time: The number of conversion clock periods for the S/H's
+ acquisition time. Should be one of 6, 10, 18, 34. If not specified,
+ default value of 10 is used.
+ For high source impedances, this value can be increased to 18 or 34.
+ For less ADC accuracy and/or slower CCLK frequencies this value may be
+ decreased to 6. See section 6.0 INPUT SOURCE RESISTANCE in the
+ datasheet for details.
+
+Example:
+adc@0 {
+ compatible = "ti,adc12138";
+ reg = <0>;
+ interrupts = <28 IRQ_TYPE_EDGE_RISING>;
+ interrupt-parent = <&gpio1>;
+ clocks = <&cclk>;
+ vref-p-supply = <&ldo4_reg>;
+ spi-max-frequency = <5000000>;
+ ti,acquisition-time = <6>;
+};
diff --git a/Documentation/devicetree/bindings/iio/proximity/sx9500.txt b/Documentation/devicetree/bindings/iio/proximity/sx9500.txt
new file mode 100644
index 000000000000..b301dd2b35da
--- /dev/null
+++ b/Documentation/devicetree/bindings/iio/proximity/sx9500.txt
@@ -0,0 +1,24 @@
+Semtech's SX9500 capacitive proximity button device driver
+
+Required properties:
+ - compatible: must be "semtech,sx9500"
+ - reg: i2c address where to find the device
+ - interrupt-parent : should be the phandle for the interrupt controller
+ - interrupts : the sole interrupt generated by the device
+
+ Refer to interrupt-controller/interrupts.txt for generic
+ interrupt client node bindings.
+
+Optional properties:
+ - reset-gpios: Reference to the GPIO connected to the device's active
+ low reset pin.
+
+Example:
+
+sx9500@28 {
+ compatible = "semtech,sx9500";
+ reg = <0x28>;
+ interrupt-parent = <&gpio2>;
+ interrupts = <16 IRQ_TYPE_LEVEL_LOW>;
+ reset-gpios = <&gpio2 10 GPIO_ACTIVE_LOW>;
+};