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a9ed9eb6 JE |
1 | NXP LPC18xx/43xx SCU pin controller Device Tree Bindings |
2 | -------------------------------------------------------- | |
3 | ||
4 | Required properties: | |
5 | - compatible : Should be "nxp,lpc1850-scu" | |
6 | - reg : Address and length of the register set for the device | |
7 | - clocks : Clock specifier (see clock bindings for details) | |
8 | ||
9 | The lpc1850-scu driver uses the generic pin multiplexing and generic pin | |
10 | configuration documented in pinctrl-bindings.txt. | |
11 | ||
12 | The following generic nodes are supported: | |
13 | - function | |
14 | - pins | |
15 | - bias-disable | |
16 | - bias-pull-up | |
17 | - bias-pull-down | |
18 | - drive-strength | |
19 | - input-enable | |
20 | - input-disable | |
21 | - input-schmitt-enable | |
22 | - input-schmitt-disable | |
23 | - slew-rate | |
24 | ||
0762ddd7 JE |
25 | NXP specific properties: |
26 | - nxp,gpio-pin-interrupt : Assign pin to gpio pin interrupt controller | |
27 | irq number 0 to 7. See example below. | |
28 | ||
a9ed9eb6 JE |
29 | Not all pins support all properties so either refer to the NXP 1850/4350 |
30 | user manual or the pin table in the pinctrl-lpc18xx driver for supported | |
31 | pin properties. | |
32 | ||
33 | Example: | |
34 | pinctrl: pinctrl@40086000 { | |
35 | compatible = "nxp,lpc1850-scu"; | |
36 | reg = <0x40086000 0x1000>; | |
37 | clocks = <&ccu1 CLK_CPU_SCU>; | |
38 | ||
39 | i2c0_pins: i2c0-pins { | |
40 | i2c0_pins_cfg { | |
41 | pins = "i2c0_scl", "i2c0_sda"; | |
42 | function = "i2c0"; | |
43 | input-enable; | |
44 | }; | |
45 | }; | |
46 | ||
47 | uart0_pins: uart0-pins { | |
48 | uart0_rx_cfg { | |
49 | pins = "pf_11"; | |
50 | function = "uart0"; | |
51 | bias-disable; | |
52 | input-enable; | |
53 | }; | |
54 | ||
55 | uart0_tx_cfg { | |
56 | pins = "pf_10"; | |
57 | function = "uart0"; | |
58 | bias-disable; | |
59 | }; | |
60 | }; | |
0762ddd7 JE |
61 | |
62 | gpio_joystick_pins: gpio-joystick-pins { | |
63 | gpio_joystick_1_cfg { | |
64 | pins = "p9_0"; | |
65 | function = "gpio"; | |
66 | nxp,gpio-pin-interrupt = <0>; | |
67 | input-enable; | |
68 | bias-disable; | |
69 | }; | |
70 | }; | |
a9ed9eb6 | 71 | }; |