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authorAndré Fabian Silva Delgado <emulatorman@parabola.nu>2015-12-15 14:52:16 -0300
committerAndré Fabian Silva Delgado <emulatorman@parabola.nu>2015-12-15 14:52:16 -0300
commit8d91c1e411f55d7ea91b1183a2e9f8088fb4d5be (patch)
treee9891aa6c295060d065adffd610c4f49ecf884f3 /Documentation/devicetree/bindings/i2c
parenta71852147516bc1cb5b0b3cbd13639bfd4022dc8 (diff)
Linux-libre 4.3.2-gnu
Diffstat (limited to 'Documentation/devicetree/bindings/i2c')
-rw-r--r--Documentation/devicetree/bindings/i2c/i2c-cadence.txt6
-rw-r--r--Documentation/devicetree/bindings/i2c/i2c-emev2.txt22
-rw-r--r--Documentation/devicetree/bindings/i2c/i2c-lpc2k.txt33
-rw-r--r--Documentation/devicetree/bindings/i2c/i2c-mux-reg.txt74
-rw-r--r--Documentation/devicetree/bindings/i2c/i2c.txt45
-rw-r--r--Documentation/devicetree/bindings/i2c/ina209.txt18
-rw-r--r--Documentation/devicetree/bindings/i2c/ina2xx.txt22
-rw-r--r--Documentation/devicetree/bindings/i2c/max6697.txt64
-rw-r--r--Documentation/devicetree/bindings/i2c/ti,bq32k.txt18
-rw-r--r--Documentation/devicetree/bindings/i2c/trivial-devices.txt2
10 files changed, 181 insertions, 123 deletions
diff --git a/Documentation/devicetree/bindings/i2c/i2c-cadence.txt b/Documentation/devicetree/bindings/i2c/i2c-cadence.txt
index 7cb0b5608..ebaa90c58 100644
--- a/Documentation/devicetree/bindings/i2c/i2c-cadence.txt
+++ b/Documentation/devicetree/bindings/i2c/i2c-cadence.txt
@@ -2,7 +2,11 @@ Binding for the Cadence I2C controller
Required properties:
- reg: Physical base address and size of the controller's register area.
- - compatible: Compatibility string. Must be 'cdns,i2c-r1p10'.
+ - compatible: Should contain one of:
+ * "cdns,i2c-r1p10"
+ Note: Use this when cadence i2c controller version 1.0 is used.
+ * "cdns,i2c-r1p14"
+ Note: Use this when cadence i2c controller version 1.4 is used.
- clocks: Input clock specifier. Refer to common clock bindings.
- interrupts: Interrupt specifier. Refer to interrupt bindings.
- #address-cells: Should be 1.
diff --git a/Documentation/devicetree/bindings/i2c/i2c-emev2.txt b/Documentation/devicetree/bindings/i2c/i2c-emev2.txt
new file mode 100644
index 000000000..5ed1ea1c7
--- /dev/null
+++ b/Documentation/devicetree/bindings/i2c/i2c-emev2.txt
@@ -0,0 +1,22 @@
+Device tree configuration for Renesas EMEV2 IIC controller
+
+Required properties:
+- compatible : "renesas,iic-emev2"
+- reg : address start and address range size of device
+- interrupts : specifier for the IIC controller interrupt
+- clocks : phandle to the IP core SCLK
+- clock-names : must be "sclk"
+- #address-cells : should be <1>
+- #size-cells : should be <0>
+
+Example:
+
+ iic0: i2c@e0070000 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ compatible = "renesas,iic-emev2";
+ reg = <0xe0070000 0x28>;
+ interrupts = <0 32 IRQ_TYPE_EDGE_RISING>;
+ clocks = <&iic0_sclk>;
+ clock-names = "sclk";
+ };
diff --git a/Documentation/devicetree/bindings/i2c/i2c-lpc2k.txt b/Documentation/devicetree/bindings/i2c/i2c-lpc2k.txt
new file mode 100644
index 000000000..4101aa621
--- /dev/null
+++ b/Documentation/devicetree/bindings/i2c/i2c-lpc2k.txt
@@ -0,0 +1,33 @@
+NXP I2C controller for LPC2xxx/178x/18xx/43xx
+
+Required properties:
+ - compatible: must be "nxp,lpc1788-i2c"
+ - reg: physical address and length of the device registers
+ - interrupts: a single interrupt specifier
+ - clocks: clock for the device
+ - #address-cells: should be <1>
+ - #size-cells: should be <0>
+
+Optional properties:
+- clock-frequency: the desired I2C bus clock frequency in Hz; in
+ absence of this property the default value is used (100 kHz).
+
+Example:
+i2c0: i2c@400a1000 {
+ compatible = "nxp,lpc1788-i2c";
+ reg = <0x400a1000 0x1000>;
+ interrupts = <18>;
+ clocks = <&ccu1 CLK_APB1_I2C0>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+};
+
+&i2c0 {
+ clock-frequency = <400000>;
+
+ lm75@48 {
+ compatible = "nxp,lm75";
+ reg = <0x48>;
+ };
+};
+
diff --git a/Documentation/devicetree/bindings/i2c/i2c-mux-reg.txt b/Documentation/devicetree/bindings/i2c/i2c-mux-reg.txt
new file mode 100644
index 000000000..688783fbe
--- /dev/null
+++ b/Documentation/devicetree/bindings/i2c/i2c-mux-reg.txt
@@ -0,0 +1,74 @@
+Register-based I2C Bus Mux
+
+This binding describes an I2C bus multiplexer that uses a single register
+to route the I2C signals.
+
+Required properties:
+- compatible: i2c-mux-reg
+- i2c-parent: The phandle of the I2C bus that this multiplexer's master-side
+ port is connected to.
+* Standard I2C mux properties. See mux.txt in this directory.
+* I2C child bus nodes. See mux.txt in this directory.
+
+Optional properties:
+- reg: this pair of <offset size> specifies the register to control the mux.
+ The <offset size> depends on its parent node. It can be any memory-mapped
+ address. The size must be either 1, 2, or 4 bytes. If reg is omitted, the
+ resource of this device will be used.
+- little-endian: The existence indicates the register is in little endian.
+- big-endian: The existence indicates the register is in big endian.
+ If both little-endian and big-endian are omitted, the endianness of the
+ CPU will be used.
+- write-only: The existence indicates the register is write-only.
+- idle-state: value to set the muxer to when idle. When no value is
+ given, it defaults to the last value used.
+
+Whenever an access is made to a device on a child bus, the value set
+in the revelant node's reg property will be output to the register.
+
+If an idle state is defined, using the idle-state (optional) property,
+whenever an access is not being made to a device on a child bus, the
+register will be set according to the idle value.
+
+If an idle state is not defined, the most recently used value will be
+left programmed into the register.
+
+Example of a mux on PCIe card, the host is a powerpc SoC (big endian):
+
+ i2c-mux {
+ /* the <offset size> depends on the address translation
+ * of the parent device. If omitted, device resource
+ * will be used instead. The size is to determine
+ * whether iowrite32, iowrite16, or iowrite8 will be used.
+ */
+ reg = <0x6028 0x4>;
+ little-endian; /* little endian register on PCIe */
+ compatible = "i2c-mux-reg";
+ #address-cells = <1>;
+ #size-cells = <0>;
+ i2c-parent = <&i2c1>;
+ i2c@0 {
+ reg = <0>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ si5338: clock-generator@70 {
+ compatible = "silabs,si5338";
+ reg = <0x70>;
+ /* other stuff */
+ };
+ };
+
+ i2c@1 {
+ /* data is written using iowrite32 */
+ reg = <1>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ si5338: clock-generator@70 {
+ compatible = "silabs,si5338";
+ reg = <0x70>;
+ /* other stuff */
+ };
+ };
+ };
diff --git a/Documentation/devicetree/bindings/i2c/i2c.txt b/Documentation/devicetree/bindings/i2c/i2c.txt
new file mode 100644
index 000000000..8a99150ac
--- /dev/null
+++ b/Documentation/devicetree/bindings/i2c/i2c.txt
@@ -0,0 +1,45 @@
+Generic device tree bindings for I2C busses
+===========================================
+
+This document describes generic bindings which can be used to describe I2C
+busses in a device tree.
+
+Required properties
+-------------------
+
+- #address-cells - should be <1>. Read more about addresses below.
+- #size-cells - should be <0>.
+- compatible - name of I2C bus controller following generic names
+ recommended practice.
+
+For other required properties e.g. to describe register sets,
+clocks, etc. check the binding documentation of the specific driver.
+
+The cells properties above define that an address of children of an I2C bus
+are described by a single value. This is usually a 7 bit address. However,
+flags can be attached to the address. I2C_TEN_BIT_ADDRESS is used to mark a 10
+bit address. It is needed to avoid the ambiguity between e.g. a 7 bit address
+of 0x50 and a 10 bit address of 0x050 which, in theory, can be on the same bus.
+Another flag is I2C_OWN_SLAVE_ADDRESS to mark addresses on which we listen to
+be devices ourselves.
+
+Optional properties
+-------------------
+
+These properties may not be supported by all drivers. However, if a driver
+wants to support one of the below features, it should adapt the bindings below.
+
+- clock-frequency - frequency of bus clock in Hz.
+- wakeup-source - device can be used as a wakeup source.
+
+- interrupts - interrupts used by the device.
+- interrupt-names - "irq" and "wakeup" names are recognized by I2C core,
+ other names are left to individual drivers.
+
+Binding may contain optional "interrupts" property, describing interrupts
+used by the device. I2C core will assign "irq" interrupt (or the very first
+interrupt if not using interrupt names) as primary interrupt for the slave.
+
+Also, if device is marked as a wakeup source, I2C core will set up "wakeup"
+interrupt for the device. If "wakeup" interrupt name is not present in the
+binding, then primary interrupt will be used as wakeup interrupt.
diff --git a/Documentation/devicetree/bindings/i2c/ina209.txt b/Documentation/devicetree/bindings/i2c/ina209.txt
deleted file mode 100644
index 9dd2bee80..000000000
--- a/Documentation/devicetree/bindings/i2c/ina209.txt
+++ /dev/null
@@ -1,18 +0,0 @@
-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/ina2xx.txt b/Documentation/devicetree/bindings/i2c/ina2xx.txt
deleted file mode 100644
index a2ad85d7e..000000000
--- a/Documentation/devicetree/bindings/i2c/ina2xx.txt
+++ /dev/null
@@ -1,22 +0,0 @@
-ina2xx properties
-
-Required properties:
-- compatible: Must be one of the following:
- - "ti,ina219" for ina219
- - "ti,ina220" for ina220
- - "ti,ina226" for ina226
- - "ti,ina230" for ina230
-- reg: I2C address
-
-Optional properties:
-
-- shunt-resistor
- Shunt resistor value in micro-Ohm
-
-Example:
-
-ina220@44 {
- compatible = "ti,ina220";
- reg = <0x44>;
- shunt-resistor = <1000>;
-};
diff --git a/Documentation/devicetree/bindings/i2c/max6697.txt b/Documentation/devicetree/bindings/i2c/max6697.txt
deleted file mode 100644
index 5f793998e..000000000
--- a/Documentation/devicetree/bindings/i2c/max6697.txt
+++ /dev/null
@@ -1,64 +0,0 @@
-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>;
-};
diff --git a/Documentation/devicetree/bindings/i2c/ti,bq32k.txt b/Documentation/devicetree/bindings/i2c/ti,bq32k.txt
deleted file mode 100644
index e204906b9..000000000
--- a/Documentation/devicetree/bindings/i2c/ti,bq32k.txt
+++ /dev/null
@@ -1,18 +0,0 @@
-* TI BQ32000 I2C Serial Real-Time Clock
-
-Required properties:
-- compatible: Should contain "ti,bq32000".
-- reg: I2C address for chip
-
-Optional properties:
-- trickle-resistor-ohms : Selected resistor for trickle charger
- Values usable are 1120 and 20180
- Should be given if trickle charger should be enabled
-- trickle-diode-disable : Do not use internal trickle charger diode
- Should be given if internal trickle charger diode should be disabled
-Example:
- bq32000: rtc@68 {
- compatible = "ti,bq32000";
- trickle-resistor-ohms = <1120>;
- reg = <0x68>;
- };
diff --git a/Documentation/devicetree/bindings/i2c/trivial-devices.txt b/Documentation/devicetree/bindings/i2c/trivial-devices.txt
index 00f8652e1..d77d412cb 100644
--- a/Documentation/devicetree/bindings/i2c/trivial-devices.txt
+++ b/Documentation/devicetree/bindings/i2c/trivial-devices.txt
@@ -95,6 +95,8 @@ stm,m41t00 Serial Access TIMEKEEPER
stm,m41t62 Serial real-time clock (RTC) with alarm
stm,m41t80 M41T80 - SERIAL ACCESS RTC WITH ALARMS
taos,tsl2550 Ambient Light Sensor with SMBUS/Two Wire Serial Interface
+ti,ads7828 8-Channels, 12-bit ADC
+ti,ads7830 8-Channels, 8-bit ADC
ti,tsc2003 I2C Touch-Screen Controller
ti,tmp102 Low Power Digital Temperature Sensor with SMBUS/Two Wire Serial Interface
ti,tmp103 Low Power Digital Temperature Sensor with SMBUS/Two Wire Serial Interface