1 Pincontrol driver for RK805 Power management I 1 Pincontrol driver for RK805 Power management IC.
2 2
3 RK805 has 2 pins which can be configured as GP 3 RK805 has 2 pins which can be configured as GPIO output only.
4 4
5 Please refer file <devicetree/bindings/pinctrl 5 Please refer file <devicetree/bindings/pinctrl/pinctrl-bindings.txt>
6 for details of the common pinctrl bindings use 6 for details of the common pinctrl bindings used by client devices,
7 including the meaning of the phrase "pin confi 7 including the meaning of the phrase "pin configuration node".
8 8
9 Optional Pinmux properties: 9 Optional Pinmux properties:
10 -------------------------- 10 --------------------------
11 Following properties are required if default s 11 Following properties are required if default setting of pins are required
12 at boot. 12 at boot.
13 - pinctrl-names: A pinctrl state named per <pi 13 - pinctrl-names: A pinctrl state named per <pinctrl-bindings.txt>.
14 - pinctrl[0...n]: Properties to contain the ph 14 - pinctrl[0...n]: Properties to contain the phandle for pinctrl states per
15 <pinctrl-bindings.txt>. 15 <pinctrl-bindings.txt>.
16 16
17 The pin configurations are defined as child of 17 The pin configurations are defined as child of the pinctrl states node. Each
18 sub-node have following properties: 18 sub-node have following properties:
19 19
20 Required properties: 20 Required properties:
21 ------------------ 21 ------------------
22 - #gpio-cells: Should be two. The first cell i 22 - #gpio-cells: Should be two. The first cell is the pin number and the
23 second is the GPIO flags. 23 second is the GPIO flags.
24 24
25 - gpio-controller: Marks the device node as a 25 - gpio-controller: Marks the device node as a GPIO controller.
26 26
27 - pins: List of pins. Valid values of pins pro 27 - pins: List of pins. Valid values of pins properties are: gpio0, gpio1.
28 28
29 First 2 properties must be added in the RK805 29 First 2 properties must be added in the RK805 PMIC node, documented in
30 Documentation/devicetree/bindings/mfd/rockchip 30 Documentation/devicetree/bindings/mfd/rockchip,rk808.yaml
31 31
32 Optional properties: 32 Optional properties:
33 ------------------- 33 -------------------
34 Following are optional properties defined as p 34 Following are optional properties defined as pinmux DT binding document
35 <pinctrl-bindings.txt>. Absence of properties 35 <pinctrl-bindings.txt>. Absence of properties will leave the configuration
36 on default. 36 on default.
37 function, 37 function,
38 output-low, 38 output-low,
39 output-high. 39 output-high.
40 40
41 Valid values for function properties are: gpio 41 Valid values for function properties are: gpio.
42 42
43 There are also not customised properties for a 43 There are also not customised properties for any GPIO.
44 44
45 Example: 45 Example:
46 -------- 46 --------
47 rk805: rk805@18 { 47 rk805: rk805@18 {
48 compatible = "rockchip,rk805"; 48 compatible = "rockchip,rk805";
49 ... 49 ...
50 gpio-controller; 50 gpio-controller;
51 #gpio-cells = <2>; 51 #gpio-cells = <2>;
52 52
53 pinctrl-names = "default"; 53 pinctrl-names = "default";
54 pinctrl-0 = <&pmic_int_l>, <&rk805_def 54 pinctrl-0 = <&pmic_int_l>, <&rk805_default>;
55 55
56 rk805_default: pinmux { 56 rk805_default: pinmux {
57 gpio01 { 57 gpio01 {
58 pins = "gpio0", "gpio1 58 pins = "gpio0", "gpio1";
59 function = "gpio"; 59 function = "gpio";
60 output-high; 60 output-high;
61 }; 61 };
62 }; 62 };
63 }; 63 };
Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.