diff options
Diffstat (limited to 'Documentation/devicetree')
13 files changed, 382 insertions, 54 deletions
diff --git a/Documentation/devicetree/bindings/arm/atmel-adc.txt b/Documentation/devicetree/bindings/arm/atmel-adc.txt index c63097d6afe..16769d9cedd 100644 --- a/Documentation/devicetree/bindings/arm/atmel-adc.txt +++ b/Documentation/devicetree/bindings/arm/atmel-adc.txt @@ -14,9 +14,19 @@ Required properties: - atmel,adc-status-register: Offset of the Interrupt Status Register - atmel,adc-trigger-register: Offset of the Trigger Register - atmel,adc-vref: Reference voltage in millivolts for the conversions + - atmel,adc-res: List of resolution in bits supported by the ADC. List size + must be two at least. + - atmel,adc-res-names: Contains one identifier string for each resolution + in atmel,adc-res property. "lowres" and "highres" + identifiers are required. Optional properties: - atmel,adc-use-external: Boolean to enable of external triggers + - atmel,adc-use-res: String corresponding to an identifier from + atmel,adc-res-names property. If not specified, the highest + resolution will be used. + - atmel,adc-sleep-mode: Boolean to enable sleep mode when no conversion + - atmel,adc-sample-hold-time: Sample and Hold Time in microseconds Optional trigger Nodes: - Required properties: @@ -40,6 +50,9 @@ adc0: adc@fffb0000 { atmel,adc-trigger-register = <0x08>; atmel,adc-use-external; atmel,adc-vref = <3300>; + atmel,adc-res = <8 10>; + atmel,adc-res-names = "lowres", "highres"; + atmel,adc-use-res = "lowres"; trigger@0 { trigger-name = "external-rising"; diff --git a/Documentation/devicetree/bindings/arm/msm/ssbi.txt b/Documentation/devicetree/bindings/arm/msm/ssbi.txt new file mode 100644 index 00000000000..54fd5ced340 --- /dev/null +++ b/Documentation/devicetree/bindings/arm/msm/ssbi.txt @@ -0,0 +1,18 @@ +* Qualcomm SSBI + +Some Qualcomm MSM devices contain a point-to-point serial bus used to +communicate with a limited range of devices (mostly power management +chips). + +These require the following properties: + +- compatible: "qcom,ssbi" + +- qcom,controller-type + indicates the SSBI bus variant the controller should use to talk + with the slave device. This should be one of "ssbi", "ssbi2", or + "pmic-arbiter". The type chosen is determined by the attached + slave. + +The slave device should be the single child node of the ssbi device +with a compatible field. diff --git a/Documentation/devicetree/bindings/arm/samsung/exynos-adc.txt b/Documentation/devicetree/bindings/arm/samsung/exynos-adc.txt new file mode 100644 index 00000000000..47ada1dff21 --- /dev/null +++ b/Documentation/devicetree/bindings/arm/samsung/exynos-adc.txt @@ -0,0 +1,60 @@ +Samsung Exynos Analog to Digital Converter bindings + +The devicetree bindings are for the new ADC driver written for +Exynos4 and upward SoCs from Samsung. + +New driver handles the following +1. Supports ADC IF found on EXYNOS4412/EXYNOS5250 + and future SoCs from Samsung +2. Add ADC driver under iio/adc framework +3. Also adds the Documentation for device tree bindings + +Required properties: +- compatible: Must be "samsung,exynos-adc-v1" + for exynos4412/5250 controllers. + Must be "samsung,exynos-adc-v2" for + future controllers. +- reg: Contains ADC register address range (base address and + length) and the address of the phy enable register. +- interrupts: Contains the interrupt information for the timer. The + format is being dependent on which interrupt controller + the Samsung device uses. +- #io-channel-cells = <1>; As ADC has multiple outputs +- clocks From common clock binding: handle to adc clock. +- clock-names From common clock binding: Shall be "adc". +- vdd-supply VDD input supply. + +Note: child nodes can be added for auto probing from device tree. + +Example: adding device info in dtsi file + +adc: adc@12D10000 { + compatible = "samsung,exynos-adc-v1"; + reg = <0x12D10000 0x100>, <0x10040718 0x4>; + interrupts = <0 106 0>; + #io-channel-cells = <1>; + io-channel-ranges; + + clocks = <&clock 303>; + clock-names = "adc"; + + vdd-supply = <&buck5_reg>; +}; + + +Example: Adding child nodes in dts file + +adc@12D10000 { + + /* NTC thermistor is a hwmon device */ + ncp15wb473@0 { + compatible = "ntc,ncp15wb473"; + pullup-uV = <1800000>; + pullup-ohm = <47000>; + pulldown-ohm = <0>; + io-channels = <&adc 4>; + }; +}; + +Note: Does not apply to ADC driver under arch/arm/plat-samsung/ +Note: The child node can be added under the adc node or separately. diff --git a/Documentation/devicetree/bindings/gpio/gpio.txt b/Documentation/devicetree/bindings/gpio/gpio.txt index a33628759d3..d933af37069 100644 --- a/Documentation/devicetree/bindings/gpio/gpio.txt +++ b/Documentation/devicetree/bindings/gpio/gpio.txt @@ -98,7 +98,7 @@ announce the pinrange to the pin ctrl subsystem. For example, compatible = "fsl,qe-pario-bank-e", "fsl,qe-pario-bank"; reg = <0x1460 0x18>; gpio-controller; - gpio-ranges = <&pinctrl1 20 10>, <&pinctrl2 50 20>; + gpio-ranges = <&pinctrl1 0 20 10>, <&pinctrl2 10 50 20>; } @@ -107,8 +107,8 @@ where, Next values specify the base pin and number of pins for the range handled by 'qe_pio_e' gpio. In the given example from base pin 20 to - pin 29 under pinctrl1 and pin 50 to pin 69 under pinctrl2 is handled - by this gpio controller. + pin 29 under pinctrl1 with gpio offset 0 and pin 50 to pin 69 under + pinctrl2 with gpio offset 10 is handled by this gpio controller. The pinctrl node must have "#gpio-range-cells" property to show number of arguments to pass with phandle from gpio controllers node. diff --git a/Documentation/devicetree/bindings/hwmon/ntc_thermistor.txt b/Documentation/devicetree/bindings/hwmon/ntc_thermistor.txt new file mode 100644 index 00000000000..c6f66674f19 --- /dev/null +++ b/Documentation/devicetree/bindings/hwmon/ntc_thermistor.txt @@ -0,0 +1,29 @@ +NTC Thermistor hwmon sensors +------------------------------- + +Requires node properties: +- "compatible" value : one of + "ntc,ncp15wb473" + "ntc,ncp18wb473" + "ntc,ncp21wb473" + "ntc,ncp03wb473" + "ntc,ncp15wl333" +- "pullup-uv" Pull up voltage in micro volts +- "pullup-ohm" Pull up resistor value in ohms +- "pulldown-ohm" Pull down resistor value in ohms +- "connected-positive" Always ON, If not specified. + Status change is possible. +- "io-channels" Channel node of ADC to be used for + conversion. + +Read more about iio bindings at + Documentation/devicetree/bindings/iio/iio-bindings.txt + +Example: + ncp15wb473@0 { + compatible = "ntc,ncp15wb473"; + pullup-uv = <1800000>; + pullup-ohm = <47000>; + pulldown-ohm = <0>; + io-channels = <&adc 3>; + }; diff --git a/Documentation/devicetree/bindings/iio/iio-bindings.txt b/Documentation/devicetree/bindings/iio/iio-bindings.txt new file mode 100644 index 00000000000..0b447d9ad19 --- /dev/null +++ b/Documentation/devicetree/bindings/iio/iio-bindings.txt @@ -0,0 +1,97 @@ +This binding is derived from clock bindings, and based on suggestions +from Lars-Peter Clausen [1]. + +Sources of IIO channels can be represented by any node in the device +tree. Those nodes are designated as IIO providers. IIO consumer +nodes use a phandle and IIO specifier pair to connect IIO provider +outputs to IIO inputs. Similar to the gpio specifiers, an IIO +specifier is an array of one or more cells identifying the IIO +output on a device. The length of an IIO specifier is defined by the +value of a #io-channel-cells property in the IIO provider node. + +[1] http://marc.info/?l=linux-iio&m=135902119507483&w=2 + +==IIO providers== + +Required properties: +#io-channel-cells: Number of cells in an IIO specifier; Typically 0 for nodes + with a single IIO output and 1 for nodes with multiple + IIO outputs. + +Example for a simple configuration with no trigger: + + adc: voltage-sensor@35 { + compatible = "maxim,max1139"; + reg = <0x35>; + #io-channel-cells = <1>; + }; + +Example for a configuration with trigger: + + adc@35 { + compatible = "some-vendor,some-adc"; + reg = <0x35>; + + adc1: iio-device@0 { + #io-channel-cells = <1>; + /* other properties */ + }; + adc2: iio-device@1 { + #io-channel-cells = <1>; + /* other properties */ + }; + }; + +==IIO consumers== + +Required properties: +io-channels: List of phandle and IIO specifier pairs, one pair + for each IIO input to the device. Note: if the + IIO provider specifies '0' for #io-channel-cells, + then only the phandle portion of the pair will appear. + +Optional properties: +io-channel-names: + List of IIO input name strings sorted in the same + order as the io-channels property. Consumers drivers + will use io-channel-names to match IIO input names + with IIO specifiers. +io-channel-ranges: + Empty property indicating that child nodes can inherit named + IIO channels from this node. Useful for bus nodes to provide + and IIO channel to their children. + +For example: + + device { + io-channels = <&adc 1>, <&ref 0>; + io-channel-names = "vcc", "vdd"; + }; + +This represents a device with two IIO inputs, named "vcc" and "vdd". +The vcc channel is connected to output 1 of the &adc device, and the +vdd channel is connected to output 0 of the &ref device. + +==Example== + + adc: max1139@35 { + compatible = "maxim,max1139"; + reg = <0x35>; + #io-channel-cells = <1>; + }; + + ... + + iio_hwmon { + compatible = "iio-hwmon"; + io-channels = <&adc 0>, <&adc 1>, <&adc 2>, + <&adc 3>, <&adc 4>, <&adc 5>, + <&adc 6>, <&adc 7>, <&adc 8>, + <&adc 9>; + }; + + some_consumer { + compatible = "some-consumer"; + io-channels = <&adc 10>, <&adc 11>; + io-channel-names = "adc1", "adc2"; + }; diff --git a/Documentation/devicetree/bindings/pinctrl/pinctrl-single.txt b/Documentation/devicetree/bindings/pinctrl/pinctrl-single.txt index 2c81e45f137..08f0c3d0157 100644 --- a/Documentation/devicetree/bindings/pinctrl/pinctrl-single.txt +++ b/Documentation/devicetree/bindings/pinctrl/pinctrl-single.txt @@ -1,7 +1,9 @@ One-register-per-pin type device tree based pinctrl driver Required properties: -- compatible : "pinctrl-single" +- compatible : "pinctrl-single" or "pinconf-single". + "pinctrl-single" means that pinconf isn't supported. + "pinconf-single" means that generic pinconf is supported. - reg : offset and length of the register set for the mux registers @@ -14,9 +16,61 @@ Optional properties: - pinctrl-single,function-off : function off mode for disabled state if available and same for all registers; if not specified, disabling of pin functions is ignored + - pinctrl-single,bit-per-mux : boolean to indicate that one register controls more than one pin +- pinctrl-single,drive-strength : array of value that are used to configure + drive strength in the pinmux register. They're value of drive strength + current and drive strength mask. + + /* drive strength current, mask */ + pinctrl-single,power-source = <0x30 0xf0>; + +- pinctrl-single,bias-pullup : array of value that are used to configure the + input bias pullup in the pinmux register. + + /* input, enabled pullup bits, disabled pullup bits, mask */ + pinctrl-single,bias-pullup = <0 1 0 1>; + +- pinctrl-single,bias-pulldown : array of value that are used to configure the + input bias pulldown in the pinmux register. + + /* input, enabled pulldown bits, disabled pulldown bits, mask */ + pinctrl-single,bias-pulldown = <2 2 0 2>; + + * Two bits to control input bias pullup and pulldown: User should use + pinctrl-single,bias-pullup & pinctrl-single,bias-pulldown. One bit means + pullup, and the other one bit means pulldown. + * Three bits to control input bias enable, pullup and pulldown. User should + use pinctrl-single,bias-pullup & pinctrl-single,bias-pulldown. Input bias + enable bit should be included in pullup or pulldown bits. + * Although driver could set PIN_CONFIG_BIAS_DISABLE, there's no property as + pinctrl-single,bias-disable. Because pinctrl single driver could implement + it by calling pulldown, pullup disabled. + +- pinctrl-single,input-schmitt : array of value that are used to configure + input schmitt in the pinmux register. In some silicons, there're two input + schmitt value (rising-edge & falling-edge) in the pinmux register. + + /* input schmitt value, mask */ + pinctrl-single,input-schmitt = <0x30 0x70>; + +- pinctrl-single,input-schmitt-enable : array of value that are used to + configure input schmitt enable or disable in the pinmux register. + + /* input, enable bits, disable bits, mask */ + pinctrl-single,input-schmitt-enable = <0x30 0x40 0 0x70>; + +- pinctrl-single,gpio-range : list of value that are used to configure a GPIO + range. They're value of subnode phandle, pin base in pinctrl device, pin + number in this range, GPIO function value of this GPIO range. + The number of parameters is depend on #pinctrl-single,gpio-range-cells + property. + + /* pin base, nr pins & gpio function */ + pinctrl-single,gpio-range = <&range 0 3 0 &range 3 9 1>; + This driver assumes that there is only one register for each pin (unless the pinctrl-single,bit-per-mux is set), and uses the common pinctrl bindings as specified in the pinctrl-bindings.txt document in this directory. @@ -42,6 +96,20 @@ Where 0xdc is the offset from the pinctrl register base address for the device pinctrl register, 0x18 is the desired value, and 0xff is the sub mask to be used when applying this change to the register. + +Optional sub-node: In case some pins could be configured as GPIO in the pinmux +register, those pins could be defined as a GPIO range. This sub-node is required +by pinctrl-single,gpio-range property. + +Required properties in sub-node: +- #pinctrl-single,gpio-range-cells : the number of parameters after phandle in + pinctrl-single,gpio-range property. + + range: gpio-range { + #pinctrl-single,gpio-range-cells = <3>; + }; + + Example: /* SoC common file */ @@ -58,7 +126,7 @@ pmx_core: pinmux@4a100040 { /* second controller instance for pins in wkup domain */ pmx_wkup: pinmux@4a31e040 { - compatible = "pinctrl-single; + compatible = "pinctrl-single"; reg = <0x4a31e040 0x0038>; #address-cells = <1>; #size-cells = <0>; @@ -76,6 +144,29 @@ control_devconf0: pinmux@48002274 { pinctrl-single,function-mask = <0x5F>; }; +/* third controller instance for pins in gpio domain */ +pmx_gpio: pinmux@d401e000 { + compatible = "pinconf-single"; + reg = <0xd401e000 0x0330>; + #address-cells = <1>; + #size-cells = <1>; + ranges; + + pinctrl-single,register-width = <32>; + pinctrl-single,function-mask = <7>; + + /* sparse GPIO range could be supported */ + pinctrl-single,gpio-range = <&range 0 3 0 &range 3 9 1 + &range 12 1 0 &range 13 29 1 + &range 43 1 0 &range 44 49 1 + &range 94 1 1 &range 96 2 1>; + + range: gpio-range { + #pinctrl-single,gpio-range-cells = <3>; + }; +}; + + /* board specific .dts file */ &pmx_core { @@ -96,6 +187,15 @@ control_devconf0: pinmux@48002274 { >; }; + uart0_pins: pinmux_uart0_pins { + pinctrl-single,pins = < + 0x208 0 /* UART0_RXD (IOCFG138) */ + 0x20c 0 /* UART0_TXD (IOCFG139) */ + >; + pinctrl-single,bias-pulldown = <0 2 2>; + pinctrl-single,bias-pullup = <0 1 1>; + }; + /* map uart2 pins */ uart2_pins: pinmux_uart2_pins { pinctrl-single,pins = < @@ -122,6 +222,11 @@ control_devconf0: pinmux@48002274 { }; +&uart1 { + pinctrl-names = "default"; + pinctrl-0 = <&uart0_pins>; +}; + &uart2 { pinctrl-names = "default"; pinctrl-0 = <&uart2_pins>; diff --git a/Documentation/devicetree/bindings/pinctrl/samsung-pinctrl.txt b/Documentation/devicetree/bindings/pinctrl/samsung-pinctrl.txt index 4598a47aa0c..c70fca146e9 100644 --- a/Documentation/devicetree/bindings/pinctrl/samsung-pinctrl.txt +++ b/Documentation/devicetree/bindings/pinctrl/samsung-pinctrl.txt @@ -7,6 +7,7 @@ on-chip controllers onto these pads. Required Properties: - compatible: should be one of the following. + - "samsung,s3c64xx-pinctrl": for S3C64xx-compatible pin-controller, - "samsung,exynos4210-pinctrl": for Exynos4210 compatible pin-controller. - "samsung,exynos4x12-pinctrl": for Exynos4x12 compatible pin-controller. - "samsung,exynos5250-pinctrl": for Exynos5250 compatible pin-controller. @@ -105,6 +106,8 @@ B. External Wakeup Interrupts: For supporting external wakeup interrupts, a - compatible: identifies the type of the external wakeup interrupt controller The possible values are: + - samsung,s3c64xx-wakeup-eint: represents wakeup interrupt controller + found on Samsung S3C64xx SoCs, - samsung,exynos4210-wakeup-eint: represents wakeup interrupt controller found on Samsung Exynos4210 SoC. - interrupt-parent: phandle of the interrupt parent to which the external diff --git a/Documentation/devicetree/bindings/staging/dwc2.txt b/Documentation/devicetree/bindings/staging/dwc2.txt new file mode 100644 index 00000000000..1a1b7cfa484 --- /dev/null +++ b/Documentation/devicetree/bindings/staging/dwc2.txt @@ -0,0 +1,15 @@ +Platform DesignWare HS OTG USB 2.0 controller +----------------------------------------------------- + +Required properties: +- compatible : "snps,dwc2" +- reg : Should contain 1 register range (address and length) +- interrupts : Should contain 1 interrupt + +Example: + + usb@101c0000 { + compatible = "ralink,rt3050-usb, snps,dwc2"; + reg = <0x101c0000 40000>; + interrupts = <18>; + }; diff --git a/Documentation/devicetree/bindings/staging/imx-drm/fsl-imx-drm.txt b/Documentation/devicetree/bindings/staging/imx-drm/fsl-imx-drm.txt index 07654f0338b..8071ac20d4b 100644 --- a/Documentation/devicetree/bindings/staging/imx-drm/fsl-imx-drm.txt +++ b/Documentation/devicetree/bindings/staging/imx-drm/fsl-imx-drm.txt @@ -26,7 +26,7 @@ Required properties: - crtc: the crtc this display is connected to, see below Optional properties: - interface_pix_fmt: How this display is connected to the - crtc. Currently supported types: "rgb24", "rgb565" + crtc. Currently supported types: "rgb24", "rgb565", "bgr666" - edid: verbatim EDID data block describing attached display. - ddc: phandle describing the i2c bus handling the display data channel diff --git a/Documentation/devicetree/bindings/tty/serial/of-serial.txt b/Documentation/devicetree/bindings/tty/serial/of-serial.txt index 8f01cb190f2..1928a3e83cd 100644 --- a/Documentation/devicetree/bindings/tty/serial/of-serial.txt +++ b/Documentation/devicetree/bindings/tty/serial/of-serial.txt @@ -33,6 +33,10 @@ Optional properties: RTAS and should not be registered. - no-loopback-test: set to indicate that the port does not implements loopback test mode +- fifo-size: the fifo size of the UART. +- auto-flow-control: one way to enable automatic flow control support. The + driver is allowed to detect support for the capability even without this + property. Example: diff --git a/Documentation/devicetree/bindings/video/via,vt8500-fb.txt b/Documentation/devicetree/bindings/video/via,vt8500-fb.txt index c870b6478ec..2871e218a0f 100644 --- a/Documentation/devicetree/bindings/video/via,vt8500-fb.txt +++ b/Documentation/devicetree/bindings/video/via,vt8500-fb.txt @@ -5,58 +5,32 @@ Required properties: - compatible : "via,vt8500-fb" - reg : Should contain 1 register ranges(address and length) - interrupts : framebuffer controller interrupt -- display: a phandle pointing to the display node +- bits-per-pixel : bit depth of framebuffer (16 or 32) -Required nodes: -- display: a display node is required to initialize the lcd panel - This should be in the board dts. -- default-mode: a videomode within the display with timing parameters - as specified below. +Required subnodes: +- display-timings: see display-timing.txt for information Example: - fb@d800e400 { + fb@d8050800 { compatible = "via,vt8500-fb"; reg = <0xd800e400 0x400>; interrupts = <12>; - display = <&display>; - default-mode = <&mode0>; - }; - -VIA VT8500 Display ------------------------------------------------------ -Required properties (as per of_videomode_helper): - - - hactive, vactive: Display resolution - - hfront-porch, hback-porch, hsync-len: Horizontal Display timing parameters - in pixels - vfront-porch, vback-porch, vsync-len: Vertical display timing parameters in - lines - - clock: displayclock in Hz - - bpp: lcd panel bit-depth. - <16> for RGB565, <32> for RGB888 - -Optional properties (as per of_videomode_helper): - - width-mm, height-mm: Display dimensions in mm - - hsync-active-high (bool): Hsync pulse is active high - - vsync-active-high (bool): Vsync pulse is active high - - interlaced (bool): This is an interlaced mode - - doublescan (bool): This is a doublescan mode + bits-per-pixel = <16>; -Example: - display: display@0 { - modes { - mode0: mode@0 { + display-timings { + native-mode = <&timing0>; + timing0: 800x480 { + clock-frequency = <0>; /* unused but required */ hactive = <800>; vactive = <480>; - hback-porch = <88>; hfront-porch = <40>; + hback-porch = <88>; hsync-len = <0>; vback-porch = <32>; vfront-porch = <11>; vsync-len = <1>; - clock = <0>; /* unused but required */ - bpp = <16>; /* non-standard but required */ }; }; }; + diff --git a/Documentation/devicetree/bindings/video/wm,wm8505-fb.txt b/Documentation/devicetree/bindings/video/wm,wm8505-fb.txt index 3d325e1d11e..0bcadb2840a 100644 --- a/Documentation/devicetree/bindings/video/wm,wm8505-fb.txt +++ b/Documentation/devicetree/bindings/video/wm,wm8505-fb.txt @@ -4,20 +4,30 @@ Wondermedia WM8505 Framebuffer Required properties: - compatible : "wm,wm8505-fb" - reg : Should contain 1 register ranges(address and length) -- via,display: a phandle pointing to the display node +- bits-per-pixel : bit depth of framebuffer (16 or 32) -Required nodes: -- display: a display node is required to initialize the lcd panel - This should be in the board dts. See definition in - Documentation/devicetree/bindings/video/via,vt8500-fb.txt -- default-mode: a videomode node as specified in - Documentation/devicetree/bindings/video/via,vt8500-fb.txt +Required subnodes: +- display-timings: see display-timing.txt for information Example: - fb@d8050800 { + fb@d8051700 { compatible = "wm,wm8505-fb"; - reg = <0xd8050800 0x200>; - display = <&display>; - default-mode = <&mode0>; + reg = <0xd8051700 0x200>; + bits-per-pixel = <16>; + + display-timings { + native-mode = <&timing0>; + timing0: 800x480 { + clock-frequency = <0>; /* unused but required */ + hactive = <800>; + vactive = <480>; + hfront-porch = <40>; + hback-porch = <88>; + hsync-len = <0>; + vback-porch = <32>; + vfront-porch = <11>; + vsync-len = <1>; + }; + }; }; |