1 == Amlogic Meson pinmux controller ==
3 Required properties for the root node:
4 - compatible: one of "amlogic,meson8-cbus-pinctrl"
5 "amlogic,meson8b-cbus-pinctrl"
6 "amlogic,meson8-aobus-pinctrl"
7 "amlogic,meson8b-aobus-pinctrl"
8 "amlogic,meson-gxbb-periphs-pinctrl"
9 "amlogic,meson-gxbb-aobus-pinctrl"
10 - reg: address and size of registers controlling irq functionality
12 === GPIO sub-nodes ===
14 The GPIO bank for the controller is represented as a sub-node and it acts as a
17 Required properties for sub-nodes are:
18 - reg: should contain address and size for mux, pull-enable, pull and
20 - reg-names: an array of strings describing the "reg" entries. Must
21 contain "mux", "pull" and "gpio". "pull-enable" is optional and
22 when it is missing the "pull" registers are used instead
23 - gpio-controller: identifies the node as a gpio controller
24 - #gpio-cells: must be 2
26 === Other sub-nodes ===
28 Child nodes without the "gpio-controller" represent some desired
29 configuration for a pin or a group. Those nodes can be pinmux nodes or
32 Required properties for pinmux nodes are:
33 - groups: a list of pinmux groups. The list of all available groups
34 depends on the SoC and can be found in driver sources.
35 - function: the name of a function to activate for the specified set
36 of groups. The list of all available functions depends on the SoC
37 and can be found in driver sources.
39 Required properties for configuration nodes:
40 - pins: a list of pin names
42 Configuration nodes support the generic properties "bias-disable",
43 "bias-pull-up" and "bias-pull-down", described in file
48 pinctrl: pinctrl@c1109880 {
49 compatible = "amlogic,meson8-cbus-pinctrl";
50 reg = <0xc1109880 0x10>;
55 gpio: banks@c11080b0 {
56 reg = <0xc11080b0 0x28>,
60 reg-names = "mux", "pull", "pull-enable", "gpio";
67 groups = "nand_io", "nand_io_ce0", "nand_io_ce1",
68 "nand_io_rb0", "nand_ale", "nand_cle",
69 "nand_wen_clk", "nand_ren_clk", "nand_dqs",
70 "nand_ce2", "nand_ce3";