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- Intel Apollo Lake GPIO controller
- The Apollo Lake (APL) GPIO controller is used to control GPIO functions of
- the pins.
- Required properties:
- - compatible: "intel,apl-gpio"
- - #gpio-cells: Should be 2. The syntax of the gpio specifier used by client
- nodes should be the following with values derived from the SoC user manual.
- <[phandle of the gpio controller node]
- [pin number within the gpio controller]
- [flags]>
- Values for gpio specifier:
- - Pin number: is a GPIO pin number between 0 and 244
- - Flags: GPIO_ACTIVE_HIGH or GPIO_ACTIVE_LOW
- - gpio-controller: Specifies that the node is a gpio controller.
- Example:
- ...
- {
- p2sb: p2sb@d,0 {
- reg = <0x02006810 0 0 0 0>;
- compatible = "intel,p2sb";
- early-regs = <IOMAP_P2SB_BAR 0x100000>;
- north {
- compatible = "intel,apl-pinctrl";
- intel,p2sb-port-id = <PID_GPIO_N>;
- gpio_n: gpio-n {
- compatible = "intel,gpio";
- gpio-controller;
- #gpio-cells = <2>;
- };
- };
- };
- i2c_2: i2c2@16,2 {
- compatible = "intel,apl-i2c", "snps,designware-i2c-pci";
- reg = <0x0200b210 0 0 0 0>;
- #address-cells = <1>;
- #size-cells = <0>;
- clock-frequency = <400000>;
- tpm@50 {
- reg = <0x50>;
- compatible = "google,cr50";
- u-boot,i2c-offset-len = <0>;
- ready-gpios = <&gpio_n GPIO_28 GPIO_ACTIVE_LOW>;
- };
- };
- };
- ...
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