Hi all!
It´s my first post, Before to writing, I was trying to find similar
questions and hints (in this forum, in /Documentation/devicetree/bindings,
and many other places) with no luck. Sorry if it´s a very basic question.
I´m trying to modify my dts file to add support for GPIO (no through
gpio-leds, direct GPIO support). My scenario is:
HW: BananaPi-m2-ultra
O.S.: Armbian. kernel version: 4.19.36-sunxi
I added a child node to the standard pinctrl descrpition:
Hi all, I´m trying to modify my dts file to add support for GPIO (no
through gpio-leds, direct GPIO support). My scenario is:
HW: BananaPi-m2-ultra O.S.: Armbian. kernel version: 4.19.36-sunxi
I added a child node to the standard pinctrl descrpition:
Introducir código aquí...
pio: pinctrl@1c20800 {
compatible = "allwinner,sun8i-r40-pinctrl";
reg = <0x1c20800 0x400>; interrupts = <0x0 0x1c 0x4>; clocks = <0x7 0x4f 0x2
0x4>; clock-names = "apb", "hosc", "losc"; gpio-controller;
interrupt-controller; #interrupt-cells = <0x3>; #gpio-cells = <0x3>;
pinctrl-names = "default"; pinctrl-0 = <0x13>; phandle = >0xd>; clk-out-a-pin
{ pins = "PI12"; function = "clk_out_a"; drive = <0x0>; pull = <0x0>;
phandle = <0x13>; }; /* A lot of child node */ /* My child node */
myCustomOutput { allwinner,pins = "PH3"; allwinner,function = "myOutput";
allwinner,drive = "1"; /* 20mA capable output */ }; }; /* End of pio */
So, when I want to implement the client node for myCustomOutputs I don’t
figure what the value for compatible property must to be.
At root level, I want to write:
myOutput {
compatible = "?????"; /* What value must be here */
gpios = <&pio 0x7 0x3 GPIO_ACTIVE_HIGH>;
};
Could please somebody point me in the right direction?
Thanks in advance!
Mariano
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