diff options
Diffstat (limited to 'Documentation/devicetree/bindings/input/touchscreen/sun4i.txt')
| -rw-r--r-- | Documentation/devicetree/bindings/input/touchscreen/sun4i.txt | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/input/touchscreen/sun4i.txt b/Documentation/devicetree/bindings/input/touchscreen/sun4i.txt new file mode 100644 index 000000000..89abecd93 --- /dev/null +++ b/Documentation/devicetree/bindings/input/touchscreen/sun4i.txt @@ -0,0 +1,38 @@ +sun4i resistive touchscreen controller +-------------------------------------- + +Required properties: + - compatible: "allwinner,sun4i-a10-ts", "allwinner,sun5i-a13-ts" or + "allwinner,sun6i-a31-ts" + - reg: mmio address range of the chip + - interrupts: interrupt to which the chip is connected + - #thermal-sensor-cells: shall be 0 + +Optional properties: + - allwinner,ts-attached : boolean indicating that an actual touchscreen + is attached to the controller + - allwinner,tp-sensitive-adjust : integer (4 bits) + adjust sensitivity of pen down detection + between 0 (least sensitive) and 15 + (defaults to 15) + - allwinner,filter-type : integer (2 bits) + select median and averaging filter + samples used for median / averaging filter + 0: 4/2 + 1: 5/3 + 2: 8/4 + 3: 16/8 + (defaults to 1) + +Example: + + rtp: rtp@01c25000 { + compatible = "allwinner,sun4i-a10-ts"; + reg = <0x01c25000 0x100>; + interrupts = <29>; + allwinner,ts-attached; + #thermal-sensor-cells = <0>; + /* sensitive/noisy touch panel */ + allwinner,tp-sensitive-adjust = <0>; + allwinner,filter-type = <3>; + }; |