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author | Sascha Hauer <s.hauer@pengutronix.de> | 2018-02-27 09:40:19 +0100 |
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committer | Sascha Hauer <s.hauer@pengutronix.de> | 2018-03-01 14:29:51 +0100 |
commit | a9c5f6b9ec883ee9dafd6d393600acc6fd263043 (patch) | |
tree | 35621cff332a0c95509b04b2e4170f0eda1f0ecf /dts/Bindings/gpio/gpio-axp209.txt | |
parent | 5ba0e42cb24afdf59d48930daf495c148312fc67 (diff) | |
download | barebox-a9c5f6b9ec883ee9dafd6d393600acc6fd263043.tar.gz barebox-a9c5f6b9ec883ee9dafd6d393600acc6fd263043.tar.xz |
dts: update to v4.16-rc1
Also includeded:
ARM: dts: am33xx: do not delete no longer existing clocks
Several clocks are removed from the am33xx dts files with v4.16-rc1.
Remove the corresponding /delete-node/ directives aswell to avoid
dtc breakage.
Also included:
ARM: dts: imx6qdl: SolidRun: Fix upstream include
Upstream dts file way renamed, so change include name accordingly.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'dts/Bindings/gpio/gpio-axp209.txt')
-rw-r--r-- | dts/Bindings/gpio/gpio-axp209.txt | 49 |
1 files changed, 47 insertions, 2 deletions
diff --git a/dts/Bindings/gpio/gpio-axp209.txt b/dts/Bindings/gpio/gpio-axp209.txt index a6611304dd..fc42b2caa0 100644 --- a/dts/Bindings/gpio/gpio-axp209.txt +++ b/dts/Bindings/gpio/gpio-axp209.txt @@ -1,10 +1,17 @@ -AXP209 GPIO controller +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 "x-powers,axp209-gpio" +- 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. @@ -28,3 +35,41 @@ axp209: pmic@34 { #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 |