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authorSascha Hauer <s.hauer@pengutronix.de>2021-11-17 07:36:09 +0100
committerSascha Hauer <s.hauer@pengutronix.de>2021-11-17 07:36:09 +0100
commit3f2f5980d517b6a71ffe54e615bd3a4b58b1c295 (patch)
treeeb5a7bfce811d20e58dd0eb1add0f6cf0e6b86e0 /dts/Bindings/gpio/gpio-axp209.txt
parent81ceab95360295cef146e89a1cd1cd5e590aa75e (diff)
downloadbarebox-3f2f5980d517b6a71ffe54e615bd3a4b58b1c295.tar.gz
barebox-3f2f5980d517b6a71ffe54e615bd3a4b58b1c295.tar.xz
dts: update to v5.16-rc1
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'dts/Bindings/gpio/gpio-axp209.txt')
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diff --git a/dts/Bindings/gpio/gpio-axp209.txt b/dts/Bindings/gpio/gpio-axp209.txt
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-AXP209 GPIO & pinctrl controller
-
-This driver follows the usual GPIO bindings found in
-Documentation/devicetree/bindings/gpio/gpio.txt
-
-This driver follows the usual pinctrl bindings found in
-Documentation/devicetree/bindings/pinctrl/pinctrl-bindings.txt
-
-This driver employs the per-pin muxing pattern.
-
-Required properties:
-- compatible: Should be one of:
- - "x-powers,axp209-gpio"
- - "x-powers,axp813-gpio"
-- #gpio-cells: Should be two. The first cell is the pin number and the
- second is the GPIO flags.
-- gpio-controller: Marks the device node as a GPIO controller.
-
-This node must be a subnode of the axp20x PMIC, documented in
-Documentation/devicetree/bindings/mfd/axp20x.txt
-
-Example:
-
-axp209: pmic@34 {
- compatible = "x-powers,axp209";
- reg = <0x34>;
- interrupt-parent = <&nmi_intc>;
- interrupts = <0 IRQ_TYPE_LEVEL_LOW>;
- interrupt-controller;
- #interrupt-cells = <1>;
-
- axp_gpio: gpio {
- compatible = "x-powers,axp209-gpio";
- gpio-controller;
- #gpio-cells = <2>;
- };
-};
-
-The GPIOs can be muxed to other functions and therefore, must be a subnode of
-axp_gpio.
-
-Example:
-
-&axp_gpio {
- gpio0_adc: gpio0-adc {
- pins = "GPIO0";
- function = "adc";
- };
-};
-
-&example_node {
- pinctrl-names = "default";
- pinctrl-0 = <&gpio0_adc>;
-};
-
-GPIOs and their functions
--------------------------
-
-Each GPIO is independent from the other (i.e. GPIO0 in gpio_in function does
-not force GPIO1 and GPIO2 to be in gpio_in function as well).
-
-axp209
-------
-GPIO | Functions
-------------------------
-GPIO0 | gpio_in, gpio_out, ldo, adc
-GPIO1 | gpio_in, gpio_out, ldo, adc
-GPIO2 | gpio_in, gpio_out
-
-axp813
-------
-GPIO | Functions
-------------------------
-GPIO0 | gpio_in, gpio_out, ldo, adc
-GPIO1 | gpio_in, gpio_out, ldo