1 * Marvell SoC pinctrl core driver for mpp
2
3 The pinctrl driver enables Marvell SoCs to configure the multi-purpose pins
4 (mpp) to a specific function. For each SoC family there is a SoC specific
5 driver using this core driver.
6
7 Please refer to pinctrl-bindings.txt in this directory for details of the
8 common pinctrl bindings used by client devices, including the meaning of the
9 phrase "pin configuration node".
10
11 A Marvell SoC pin configuration node is a node of a group of pins which can
12 be used for a specific device or function. Each node requires one or more
13 mpp pins or group of pins and a mpp function common to all pins.
14
15 Required properties for pinctrl driver:
16 - compatible: "marvell,<soc>-pinctrl"
17 Please refer to each marvell,<soc>-pinctrl.txt binding doc for supported SoCs.
18
19 Required properties for pin configuration node:
20 - marvell,pins: string array of mpp pins or group of pins to be muxed.
21 - marvell,function: string representing a function to mux to for all
22 marvell,pins given in this pin configuration node. The function has to be
23 common for all marvell,pins. Please refer to marvell,<soc>-pinctrl.txt for
24 valid pin/pin group names and available function names for each SoC.
25
26 Examples:
27
28 uart1: serial@12100 {
29 compatible = "ns16550a";
30 reg = <0x12100 0x100>;
31 reg-shift = <2>;
32 interrupts = <7>;
33
34 pinctrl-0 = <&pmx_uart1_sw>;
35 pinctrl-names = "default";
36 };
37
38 pinctrl: pinctrl@d0200 {
39 compatible = "marvell,dove-pinctrl";
40 reg = <0xd0200 0x14>, <0xd0440 0x04>, <0xd802c 0x08>;
41
42 pmx_uart1_sw: pmx-uart1-sw {
43 marvell,pins = "mpp_uart1";
44 marvell,function = "uart1";
45 };
46 };
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