Re: [PATCH 1/2] Documentation: afe4404: Add DT bindings for the AFE4404 heart monitor

On 10/31/2015 01:44 PM, Rob Herring wrote:

gmail thinks this is spam BTW.

Strange, the mailing lists do too.

On Sat, Oct 31, 2015 at 11:31 AM, Andrew F. Davis [off-list ref] wrote:

quoted

Add the TI afe4404 heart monitor DT bindings documentation.
Create health directory created under iio.

Signed-off-by: Andrew F. Davis <redacted>
---
  .../devicetree/bindings/iio/health/afe4404.txt     | 27 ++++++++++++++++++++++
  1 file changed, 27 insertions(+)
  create mode 100644 Documentation/devicetree/bindings/iio/health/afe4404.txt

diff --git a/Documentation/devicetree/bindings/iio/health/afe4404.txt b/Documentation/devicetree/bindings/iio/health/afe4404.txt
new file mode 100644
index 0000000..d377033
--- /dev/null
+++ b/Documentation/devicetree/bindings/iio/health/afe4404.txt

@@ -0,0 +1,27 @@
+* Texas Instruments AFE4404 Heart rate and Pulse Oximeter
+
+Required properties:
+ - compatible          : Should be "ti,afe4404".
+ - reg                 : I2C address of the device.
+ - led-supply          : Regulator supply to the device.

Is led correct name or copy-n-paste? The datasheet has tx_sup and
rx_sup for supplies.

Looking back at the data sheet it looks like it also has an io_sup.
rx_sup seems to be the supply that must be on to keep the device on.
io_sup and tx_sup can be disabled without losing register values and
reseting the device.

I'm not sure if it makes sense to list the needed supplies, so I may
just rename led-supply to tx_sup-supply and have the be the only one.

quoted

+ - interrupt-parent    : Phandle to he parent interrupt controller.
+ - interrupts          : The interrupt line the device ADC_RDY pin is connected to.
+
+Optional properties:
+ - reset-gpios         : GPIO used to reset the device.
+
+Example:
+
+&i2c2 {
+       heart_mon@58 {
+               compatible = "ti,afe4404";
+               reg = <0x58>;
+
+               led-supply = <&vbat>;
+
+               interrupt-parent = <&gpio1>;
+               interrupts = <28 IRQ_TYPE_EDGE_RISING>;
+
+               reset-gpios = <&gpio1 16 GPIO_ACTIVE_LOW>;
+       };
+};
--
1.9.1