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Diffstat (limited to 'Documentation/devicetree/bindings/i2c')
4 files changed, 104 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/i2c/brcm,bcm2835-i2c.txt b/Documentation/devicetree/bindings/i2c/brcm,bcm2835-i2c.txt new file mode 100644 index 00000000000..e9de3756752 --- /dev/null +++ b/Documentation/devicetree/bindings/i2c/brcm,bcm2835-i2c.txt @@ -0,0 +1,20 @@ +Broadcom BCM2835 I2C controller + +Required properties: +- compatible : Should be "brcm,bcm2835-i2c". +- reg: Should contain register location and length. +- interrupts: Should contain interrupt. +- clocks : The clock feeding the I2C controller. + +Recommended properties: +- clock-frequency : desired I2C bus clock frequency in Hz. + +Example: + +i2c@20205000 { + compatible = "brcm,bcm2835-i2c"; + reg = <0x7e205000 0x1000>; + interrupts = <2 21>; + clocks = <&clk_i2c>; + clock-frequency = <100000>; +}; diff --git a/Documentation/devicetree/bindings/i2c/i2c-s3c2410.txt b/Documentation/devicetree/bindings/i2c/i2c-s3c2410.txt index e9611ace879..f98d4c5b5cc 100644 --- a/Documentation/devicetree/bindings/i2c/i2c-s3c2410.txt +++ b/Documentation/devicetree/bindings/i2c/i2c-s3c2410.txt @@ -8,6 +8,8 @@ Required properties: (b) "samsung, s3c2440-i2c", for i2c compatible with s3c2440 i2c. (c) "samsung, s3c2440-hdmiphy-i2c", for s3c2440-like i2c used inside HDMIPHY block found on several samsung SoCs + (d) "samsung, exynos5440-i2c", for s3c2440-like i2c used + on EXYNOS5440 which does not need GPIO configuration. - reg: physical base address of the controller and length of memory mapped region. - interrupts: interrupt number to the cpu. diff --git a/Documentation/devicetree/bindings/i2c/ina209.txt b/Documentation/devicetree/bindings/i2c/ina209.txt new file mode 100644 index 00000000000..9dd2bee8084 --- /dev/null +++ b/Documentation/devicetree/bindings/i2c/ina209.txt @@ -0,0 +1,18 @@ +ina209 properties + +Required properties: +- compatible: Must be "ti,ina209" +- reg: I2C address + +Optional properties: + +- shunt-resistor + Shunt resistor value in micro-Ohm + +Example: + +temp-sensor@4c { + compatible = "ti,ina209"; + reg = <0x4c>; + shunt-resistor = <5000>; +}; diff --git a/Documentation/devicetree/bindings/i2c/max6697.txt b/Documentation/devicetree/bindings/i2c/max6697.txt new file mode 100644 index 00000000000..5f793998e4a --- /dev/null +++ b/Documentation/devicetree/bindings/i2c/max6697.txt @@ -0,0 +1,64 @@ +max6697 properties + +Required properties: +- compatible: + Should be one of + maxim,max6581 + maxim,max6602 + maxim,max6622 + maxim,max6636 + maxim,max6689 + maxim,max6693 + maxim,max6694 + maxim,max6697 + maxim,max6698 + maxim,max6699 +- reg: I2C address + +Optional properties: + +- smbus-timeout-disable + Set to disable SMBus timeout. If not specified, SMBus timeout will be + enabled. +- extended-range-enable + Only valid for MAX6581. Set to enable extended temperature range. + Extended temperature will be disabled if not specified. +- beta-compensation-enable + Only valid for MAX6693 and MX6694. Set to enable beta compensation on + remote temperature channel 1. + Beta compensation will be disabled if not specified. +- alert-mask + Alert bit mask. Alert disabled for bits set. + Select bit 0 for local temperature, bit 1..7 for remote temperatures. + If not specified, alert will be enabled for all channels. +- over-temperature-mask + Over-temperature bit mask. Over-temperature reporting disabled for + bits set. + Select bit 0 for local temperature, bit 1..7 for remote temperatures. + If not specified, over-temperature reporting will be enabled for all + channels. +- resistance-cancellation + Boolean for all chips other than MAX6581. Set to enable resistance + cancellation on remote temperature channel 1. + For MAX6581, resistance cancellation enabled for all channels if + specified as boolean, otherwise as per bit mask specified. + Only supported for remote temperatures (bit 1..7). + If not specified, resistance cancellation will be disabled for all + channels. +- transistor-ideality + For MAX6581 only. Two values; first is bit mask, second is ideality + select value as per MAX6581 data sheet. Select bit 1..7 for remote + channels. + Transistor ideality will be initialized to default (1.008) if not + specified. + +Example: + +temp-sensor@1a { + compatible = "maxim,max6697"; + reg = <0x1a>; + smbus-timeout-disable; + resistance-cancellation; + alert-mask = <0x72>; + over-temperature-mask = <0x7f>; +}; |