u-boot/doc/device-tree-bindings/gpio/pm8916_gpio.txt
Mateusz Kulikowski 120800df72 gpio: Add support for Qualcomm PM8916 gpios
This driver supports GPIOs present on PM8916 PMIC.
There are 2 device drivers inside:
- GPIO driver (4 "generic" GPIOs)
- Keypad driver that presents itself as GPIO with 2 inputs (power and reset)

Signed-off-by: Mateusz Kulikowski <mateusz.kulikowski@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Tested-by: Simon Glass <sjg@chromium.org>
2016-04-01 17:18:13 -04:00

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Driver for part of pm8916 PMIC - gpio and power/reset keys
This device should be child of SPMI pmic.
1) GPIO driver
Required properties:
- compatible: "qcom,pm8916-gpio"
- reg: peripheral ID, size of register block
- gpio-controller
- gpio-count: number of GPIOs
- #gpio-cells: 2
Optional properties:
- gpio-bank-name: name of bank (as default "pm8916" is used)
Example:
pmic_gpios: gpios@c000 {
compatible = "qcom,pm8916-gpio";
reg = <0xc000 0x400>;
gpio-controller;
gpio-count = <4>;
#gpio-cells = <2>;
gpio-bank-name="pmic";
};
2) Power/Reset key driver
Required properties:
- compatible: "qcom,pm8916-pwrkey"
- reg: peripheral ID, size of register block
- gpio-controller
- #gpio-cells: 2
Optional properties:
- gpio-bank-name: name of bank (as default "pm8916_key" is used)
Example:
pmic_pon: pon@800 {
compatible = "qcom,pm8916-pwrkey";
reg = <0x800 0x96>;
#gpio-cells = <2>;
gpio-controller;
};