diff options
Diffstat (limited to 'Documentation')
4 files changed, 58 insertions, 1 deletions
diff --git a/Documentation/devicetree/bindings/gpio/gpio-pca953x.txt b/Documentation/devicetree/bindings/gpio/gpio-pca953x.txt index dab537c20def..3126c3817e2a 100644 --- a/Documentation/devicetree/bindings/gpio/gpio-pca953x.txt +++ b/Documentation/devicetree/bindings/gpio/gpio-pca953x.txt @@ -19,6 +19,7 @@ Required properties: nxp,pca9698 nxp,pcal6416 nxp,pcal6524 + nxp,pcal9535 nxp,pcal9555a maxim,max7310 maxim,max7312 diff --git a/Documentation/devicetree/bindings/gpio/gpio-pca9570.yaml b/Documentation/devicetree/bindings/gpio/gpio-pca9570.yaml new file mode 100644 index 000000000000..338c5312a106 --- /dev/null +++ b/Documentation/devicetree/bindings/gpio/gpio-pca9570.yaml @@ -0,0 +1,47 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/gpio/gpio-pca9570.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: PCA9570 I2C GPO expander + +maintainers: + - Sungbo Eo <mans0n@gorani.run> + +properties: + compatible: + enum: + - nxp,pca9570 + + reg: + maxItems: 1 + + gpio-controller: true + + '#gpio-cells': + const: 2 + +required: + - compatible + - reg + - gpio-controller + - "#gpio-cells" + +additionalProperties: false + +examples: + - | + i2c0 { + #address-cells = <1>; + #size-cells = <0>; + + gpio@24 { + compatible = "nxp,pca9570"; + reg = <0x24>; + gpio-controller; + #gpio-cells = <2>; + }; + }; + +... diff --git a/Documentation/devicetree/bindings/gpio/gpio-zynq.txt b/Documentation/devicetree/bindings/gpio/gpio-zynq.txt index 4fa4eb5507cd..f693e82b4c0f 100644 --- a/Documentation/devicetree/bindings/gpio/gpio-zynq.txt +++ b/Documentation/devicetree/bindings/gpio/gpio-zynq.txt @@ -6,7 +6,9 @@ Required properties: - First cell is the GPIO line number - Second cell is used to specify optional parameters (unused) -- compatible : Should be "xlnx,zynq-gpio-1.0" or "xlnx,zynqmp-gpio-1.0" +- compatible : Should be "xlnx,zynq-gpio-1.0" or + "xlnx,zynqmp-gpio-1.0" or "xlnx,versal-gpio-1.0 + or "xlnx,pmc-gpio-1.0 - clocks : Clock specifier (see clock bindings for details) - gpio-controller : Marks the device node as a GPIO controller. - interrupts : Interrupt specifier (see interrupt bindings for diff --git a/Documentation/driver-api/gpio/drivers-on-gpio.rst b/Documentation/driver-api/gpio/drivers-on-gpio.rst index 820b403d50f6..41ec3cc72d32 100644 --- a/Documentation/driver-api/gpio/drivers-on-gpio.rst +++ b/Documentation/driver-api/gpio/drivers-on-gpio.rst @@ -89,6 +89,13 @@ hardware descriptions such as device tree or ACPI: Consumer Electronics Control bus using only GPIO. It is used to communicate with devices on the HDMI bus. +- gpio-charger: drivers/power/supply/gpio-charger.c is used if you need to do + battery charging and all you have to go by to check the presence of the + AC charger or more complex tasks such as indicating charging status using + nothing but GPIO lines, this driver provides that and also a clearly defined + way to pass the charging parameters from hardware descriptions such as the + device tree. + Apart from this there are special GPIO drivers in subsystems like MMC/SD to read card detect and write protect GPIO lines, and in the TTY serial subsystem to emulate MCTRL (modem control) signals CTS/RTS by using two GPIO lines. The |