summaryrefslogtreecommitdiffstats
path: root/dts/Bindings/hwmon
diff options
context:
space:
mode:
authorSascha Hauer <s.hauer@pengutronix.de>2017-06-06 08:07:28 +0200
committerSascha Hauer <s.hauer@pengutronix.de>2017-06-06 08:07:28 +0200
commitbb2de9a333d17bb1b048ad208002501226b83f03 (patch)
tree8ef2e876ba43af235c45cb2280885e9c67ba5548 /dts/Bindings/hwmon
parent79e6629b02fb3a296b5dc70f16dec0f8d415ccf8 (diff)
downloadbarebox-bb2de9a333d17bb1b048ad208002501226b83f03.tar.gz
barebox-bb2de9a333d17bb1b048ad208002501226b83f03.tar.xz
dts: update to v4.12-rc1
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'dts/Bindings/hwmon')
-rw-r--r--dts/Bindings/hwmon/ads7828.txt25
-rw-r--r--dts/Bindings/hwmon/aspeed-pwm-tacho.txt68
-rw-r--r--dts/Bindings/hwmon/lm87.txt30
3 files changed, 123 insertions, 0 deletions
diff --git a/dts/Bindings/hwmon/ads7828.txt b/dts/Bindings/hwmon/ads7828.txt
new file mode 100644
index 0000000000..fe0cc4ad7e
--- /dev/null
+++ b/dts/Bindings/hwmon/ads7828.txt
@@ -0,0 +1,25 @@
+ads7828 properties
+
+Required properties:
+- compatible: Should be one of
+ ti,ads7828
+ ti,ads7830
+- reg: I2C address
+
+Optional properties:
+
+- ti,differential-input
+ Set to use the device in differential mode.
+- vref-supply
+ The external reference on the device is set to this regulators output. If it
+ does not exists the internal reference will be used and output by the ads78xx
+ on the "external vref" pin.
+
+ Example ADS7828 node:
+
+ ads7828: ads@48 {
+ comatible = "ti,ads7828";
+ reg = <0x48>;
+ vref-supply = <&vref>;
+ ti,differential-input;
+ };
diff --git a/dts/Bindings/hwmon/aspeed-pwm-tacho.txt b/dts/Bindings/hwmon/aspeed-pwm-tacho.txt
new file mode 100644
index 0000000000..cf4460564a
--- /dev/null
+++ b/dts/Bindings/hwmon/aspeed-pwm-tacho.txt
@@ -0,0 +1,68 @@
+ASPEED AST2400/AST2500 PWM and Fan Tacho controller device driver
+
+The ASPEED PWM controller can support upto 8 PWM outputs. The ASPEED Fan Tacho
+controller can support upto 16 Fan tachometer inputs.
+
+There can be upto 8 fans supported. Each fan can have one PWM output and
+one/two Fan tach inputs.
+
+Required properties for pwm-tacho node:
+- #address-cells : should be 1.
+
+- #size-cells : should be 1.
+
+- reg : address and length of the register set for the device.
+
+- pinctrl-names : a pinctrl state named "default" must be defined.
+
+- pinctrl-0 : phandle referencing pin configuration of the PWM ports.
+
+- compatible : should be "aspeed,ast2400-pwm-tacho" for AST2400 and
+ "aspeed,ast2500-pwm-tacho" for AST2500.
+
+- clocks : a fixed clock providing input clock frequency(PWM
+ and Fan Tach clock)
+
+fan subnode format:
+===================
+Under fan subnode there can upto 8 child nodes, with each child node
+representing a fan. If there are 8 fans each fan can have one PWM port and
+one/two Fan tach inputs.
+
+Required properties for each child node:
+- reg : should specify PWM source port.
+ integer value in the range 0 to 7 with 0 indicating PWM port A and
+ 7 indicating PWM port H.
+
+- aspeed,fan-tach-ch : should specify the Fan tach input channel.
+ integer value in the range 0 through 15, with 0 indicating
+ Fan tach channel 0 and 15 indicating Fan tach channel 15.
+ Atleast one Fan tach input channel is required.
+
+Examples:
+
+pwm_tacho_fixed_clk: fixedclk {
+ compatible = "fixed-clock";
+ #clock-cells = <0>;
+ clock-frequency = <24000000>;
+};
+
+pwm_tacho: pwmtachocontroller@1e786000 {
+ #address-cells = <1>;
+ #size-cells = <1>;
+ reg = <0x1E786000 0x1000>;
+ compatible = "aspeed,ast2500-pwm-tacho";
+ clocks = <&pwm_tacho_fixed_clk>;
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_pwm0_default &pinctrl_pwm1_default>;
+
+ fan@0 {
+ reg = <0x00>;
+ aspeed,fan-tach-ch = /bits/ 8 <0x00>;
+ };
+
+ fan@1 {
+ reg = <0x01>;
+ aspeed,fan-tach-ch = /bits/ 8 <0x01 0x02>;
+ };
+};
diff --git a/dts/Bindings/hwmon/lm87.txt b/dts/Bindings/hwmon/lm87.txt
new file mode 100644
index 0000000000..e1b79903f2
--- /dev/null
+++ b/dts/Bindings/hwmon/lm87.txt
@@ -0,0 +1,30 @@
+*LM87 hwmon sensor.
+
+Required properties:
+- compatible: Should be
+ "ti,lm87"
+
+- reg: I2C address
+
+optional properties:
+- has-temp3: This configures pins 18 and 19 to be used as a second
+ remote temperature sensing channel. By default the pins
+ are configured as voltage input pins in0 and in5.
+
+- has-in6: When set, pin 5 is configured to be used as voltage input
+ in6. Otherwise the pin is set as FAN1 input.
+
+- has-in7: When set, pin 6 is configured to be used as voltage input
+ in7. Otherwise the pin is set as FAN2 input.
+
+- vcc-supply: a Phandle for the regulator supplying power, can be
+ cofigured to measure 5.0V power supply. Default is 3.3V.
+
+Example:
+
+lm87@2e {
+ compatible = "ti,lm87";
+ reg = <0x2e>;
+ has-temp3;
+ vcc-supply = <&reg_5v0>;
+};