diff options
Diffstat (limited to 'Documentation')
5 files changed, 138 insertions, 1 deletions
diff --git a/Documentation/devicetree/bindings/gpio/gpio-lp3943.txt b/Documentation/devicetree/bindings/gpio/gpio-lp3943.txt new file mode 100644 index 000000000000..80fcb7d70e13 --- /dev/null +++ b/Documentation/devicetree/bindings/gpio/gpio-lp3943.txt @@ -0,0 +1,37 @@ +TI/National Semiconductor LP3943 GPIO controller + +Required properties: + - compatible: "ti,lp3943-gpio" + - gpio-controller: Marks the device node as a GPIO controller. + - #gpio-cells: Should be 2. See gpio.txt in this directory for a + description of the cells format. + +Example: +Simple LED controls with LP3943 GPIO controller + +&i2c4 { + lp3943@60 { + compatible = "ti,lp3943"; + reg = <0x60>; + + gpioex: gpio { + compatible = "ti,lp3943-gpio"; + gpio-controller; + #gpio-cells = <2>; + }; + }; +}; + +leds { + compatible = "gpio-leds"; + indicator1 { + label = "indi1"; + gpios = <&gpioex 9 GPIO_ACTIVE_LOW>; + }; + + indicator2 { + label = "indi2"; + gpios = <&gpioex 10 GPIO_ACTIVE_LOW>; + default-state = "off"; + }; +}; diff --git a/Documentation/devicetree/bindings/mfd/cros-ec.txt b/Documentation/devicetree/bindings/mfd/cros-ec.txt index 5f229c5f6da9..8009c3d87f33 100644 --- a/Documentation/devicetree/bindings/mfd/cros-ec.txt +++ b/Documentation/devicetree/bindings/mfd/cros-ec.txt @@ -17,6 +17,15 @@ Required properties (SPI): - compatible: "google,cros-ec-spi" - reg: SPI chip select +Optional properties (SPI): +- google,cros-ec-spi-msg-delay: Some implementations of the EC require some + additional processing time in order to accept new transactions. If the delay + between transactions is not long enough the EC may not be able to respond + properly to subsequent transactions and cause them to hang. This property + specifies the delay, in usecs, introduced between transactions to account + for the time required by the EC to get back into a state in which new data + can be accepted. + Required properties (LPC): - compatible: "google,cros-ec-lpc" - reg: List of (IO address, size) pairs defining the interface uses diff --git a/Documentation/devicetree/bindings/mfd/lp3943.txt b/Documentation/devicetree/bindings/mfd/lp3943.txt new file mode 100644 index 000000000000..e8591d6b11b4 --- /dev/null +++ b/Documentation/devicetree/bindings/mfd/lp3943.txt @@ -0,0 +1,33 @@ +TI/National Semiconductor LP3943 MFD driver + +Required properties: + - compatible: "ti,lp3943" + - reg: I2C slave address. From 0x60 to 0x67. + +LP3943 consists of two sub-devices, lp3943-gpio and lp3943-pwm. + +For the LP3943 GPIO properties please refer to: +Documentation/devicetree/bindings/gpio/gpio-lp3943.txt + +For the LP3943 PWM properties please refer to: +Documentation/devicetree/bindings/pwm/pwm-lp3943.txt + +Example: + +lp3943@60 { + compatible = "ti,lp3943"; + reg = <0x60>; + + gpioex: gpio { + compatible = "ti,lp3943-gpio"; + gpio-controller; + #gpio-cells = <2>; + }; + + pwm3943: pwm { + compatible = "ti,lp3943-pwm"; + #pwm-cells = <2>; + ti,pwm0 = <8 9 10>; + ti,pwm1 = <15>; + }; +}; diff --git a/Documentation/devicetree/bindings/mfd/s2mps11.txt b/Documentation/devicetree/bindings/mfd/s2mps11.txt index 78a840d7510d..15ee89c3cc7b 100644 --- a/Documentation/devicetree/bindings/mfd/s2mps11.txt +++ b/Documentation/devicetree/bindings/mfd/s2mps11.txt @@ -60,7 +60,7 @@ as per the datasheet of s2mps11. - LDOn - valid values for n are 1 to 38 - - Example: LDO0, LD01, LDO28 + - Example: LDO1, LD02, LDO28 - BUCKn - valid values for n are 1 to 10. - Example: BUCK1, BUCK2, BUCK9 diff --git a/Documentation/devicetree/bindings/pwm/pwm-lp3943.txt b/Documentation/devicetree/bindings/pwm/pwm-lp3943.txt new file mode 100644 index 000000000000..7bd9d3b12ce1 --- /dev/null +++ b/Documentation/devicetree/bindings/pwm/pwm-lp3943.txt @@ -0,0 +1,58 @@ +TI/National Semiconductor LP3943 PWM controller + +Required properties: + - compatible: "ti,lp3943-pwm" + - #pwm-cells: Should be 2. See pwm.txt in this directory for a + description of the cells format. + Note that this hardware limits the period length to the + range 6250~1600000. + - ti,pwm0 or ti,pwm1: Output pin number(s) for PWM channel 0 or 1. + 0 = output 0 + 1 = output 1 + . + . + 15 = output 15 + +Example: +PWM 0 is for RGB LED brightness control +PWM 1 is for brightness control of LP8557 backlight device + +&i2c3 { + lp3943@60 { + compatible = "ti,lp3943"; + reg = <0x60>; + + /* + * PWM 0 : output 8, 9 and 10 + * PWM 1 : output 15 + */ + pwm3943: pwm { + compatible = "ti,lp3943-pwm"; + #pwm-cells = <2>; + ti,pwm0 = <8 9 10>; + ti,pwm1 = <15>; + }; + }; + +}; + +/* LEDs control with PWM 0 of LP3943 */ +pwmleds { + compatible = "pwm-leds"; + rgb { + label = "indi::rgb"; + pwms = <&pwm3943 0 10000>; + max-brightness = <255>; + }; +}; + +&i2c4 { + /* Backlight control with PWM 1 of LP3943 */ + backlight@2c { + compatible = "ti,lp8557"; + reg = <0x2c>; + + pwms = <&pwm3943 1 10000>; + pwm-names = "lp8557"; + }; +}; |