| Tom Rini | 53633a8 | 2024-02-29 12:33:36 -0500 | [diff] [blame] | 1 | LEDs connected to pca9632, pca9633 or pca9634 |
| 2 | |
| 3 | Required properties: |
| 4 | - compatible : should be : "nxp,pca9632", "nxp,pca9633", "nxp,pca9634" or "nxp,pca9635" |
| 5 | |
| 6 | Optional properties: |
| 7 | - nxp,totem-pole : use totem pole (push-pull) instead of open-drain (pca9632 defaults |
| 8 | to open-drain, newer chips to totem pole) |
| 9 | - nxp,hw-blink : use hardware blinking instead of software blinking |
| 10 | - nxp,period-scale : In some configurations, the chip blinks faster than expected. |
| 11 | This parameter provides a scaling ratio (fixed point, decimal divided |
| 12 | by 1000) to compensate, e.g. 1300=1.3x and 750=0.75x. |
| 13 | - nxp,inverted-out: invert the polarity of the generated PWM |
| 14 | |
| 15 | Each led is represented as a sub-node of the nxp,pca963x device. |
| 16 | |
| 17 | LED sub-node properties: |
| 18 | - label : (optional) see Documentation/devicetree/bindings/leds/common.txt |
| 19 | - reg : number of LED line (could be from 0 to 3 in pca9632 or pca9633, |
| 20 | 0 to 7 in pca9634, or 0 to 15 in pca9635) |
| 21 | - linux,default-trigger : (optional) |
| 22 | see Documentation/devicetree/bindings/leds/common.txt |
| 23 | |
| 24 | Examples: |
| 25 | |
| 26 | pca9632: pca9632 { |
| 27 | compatible = "nxp,pca9632"; |
| 28 | #address-cells = <1>; |
| 29 | #size-cells = <0>; |
| 30 | reg = <0x62>; |
| 31 | |
| 32 | red@0 { |
| 33 | label = "red"; |
| 34 | reg = <0>; |
| 35 | linux,default-trigger = "none"; |
| 36 | }; |
| 37 | green@1 { |
| 38 | label = "green"; |
| 39 | reg = <1>; |
| 40 | linux,default-trigger = "none"; |
| 41 | }; |
| 42 | blue@2 { |
| 43 | label = "blue"; |
| 44 | reg = <2>; |
| 45 | linux,default-trigger = "none"; |
| 46 | }; |
| 47 | unused@3 { |
| 48 | label = "unused"; |
| 49 | reg = <3>; |
| 50 | linux,default-trigger = "none"; |
| 51 | }; |
| 52 | }; |