The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/contrib/device-tree/Bindings/leds/backlight/tps65217-backlight.txt

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    1 TPS65217 family of regulators
    2 
    3 The TPS65217 chip contains a boost converter and current sinks which can be
    4 used to drive LEDs for use as backlights.
    5 
    6 Required properties:
    7 - compatible: "ti,tps65217"
    8 - reg: I2C slave address
    9 - backlight: node for specifying WLED1 and WLED2 lines in TPS65217
   10 - isel: selection bit, valid values: 1 for ISEL1 (low-level) and 2 for ISEL2 (high-level)
   11 - fdim: PWM dimming frequency, valid values: 100, 200, 500, 1000
   12 - default-brightness: valid values: 0-100
   13 
   14 Each regulator is defined using the standard binding for regulators.
   15 
   16 Example:
   17 
   18         tps: tps@24 {
   19                 reg = <0x24>;
   20                 compatible = "ti,tps65217";
   21                 backlight {
   22                         isel = <1>;  /* 1 - ISET1, 2 ISET2 */
   23                         fdim = <100>; /* TPS65217_BL_FDIM_100HZ */
   24                         default-brightness = <50>;
   25                 };
   26         };
   27 

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