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,meson8m2-cbus-pinctrl"
7 "amlogic,meson8-aobus-pinctrl"
8 "amlogic,meson8b-aobus-pinctrl"
9 "amlogic,meson8m2-aobus-pinctrl"
10 "amlogic,meson-gxbb-periphs-pinctrl"
11 "amlogic,meson-gxbb-aobus-pinctrl"
12 "amlogic,meson-gxl-periphs-pinctrl"
13 "amlogic,meson-gxl-aobus-pinctrl"
14 "amlogic,meson-axg-periphs-pinctrl"
15 "amlogic,meson-axg-aobus-pinctrl"
16 "amlogic,meson-g12a-periphs-pinctrl"
17 "amlogic,meson-g12a-aobus-pinctrl"
18 - reg: address and size of registers controlling irq functionality
20 === GPIO sub-nodes ===
22 The GPIO bank for the controller is represented as a sub-node and it acts as a
25 Required properties for sub-nodes are:
26 - reg: should contain a list of address and size, one tuple for each entry
28 - reg-names: an array of strings describing the "reg" entries.
29 Must contain "mux" and "gpio".
30 May contain "pull", "pull-enable" and "ds" when appropriate.
31 - gpio-controller: identifies the node as a gpio controller
32 - #gpio-cells: must be 2
34 === Other sub-nodes ===
36 Child nodes without the "gpio-controller" represent some desired
37 configuration for a pin or a group. Those nodes can be pinmux nodes or
40 Required properties for pinmux nodes are:
41 - groups: a list of pinmux groups. The list of all available groups
42 depends on the SoC and can be found in driver sources.
43 - function: the name of a function to activate for the specified set
44 of groups. The list of all available functions depends on the SoC
45 and can be found in driver sources.
47 Required properties for configuration nodes:
48 - pins: a list of pin names
50 Configuration nodes support the generic properties "bias-disable",
51 "bias-pull-up" and "bias-pull-down", described in file
56 pinctrl: pinctrl@c1109880 {
57 compatible = "amlogic,meson8-cbus-pinctrl";
58 reg = <0xc1109880 0x10>;
63 gpio: banks@c11080b0 {
64 reg = <0xc11080b0 0x28>,
68 reg-names = "mux", "pull", "pull-enable", "gpio";
75 groups = "nand_io", "nand_io_ce0", "nand_io_ce1",
76 "nand_io_rb0", "nand_ale", "nand_cle",
77 "nand_wen_clk", "nand_ren_clk", "nand_dqs",
78 "nand_ce2", "nand_ce3";