1 Spreadtrum GPIO controller bindings
3 The controller's registers are organized as sets of sixteen 16-bit
4 registers with each set controlling a bank of up to 16 pins. A single
5 interrupt is shared for all of the banks handled by the controller.
8 - compatible: Should be "sprd,sc9860-gpio".
9 - reg: Define the base and range of the I/O address space containing
10 the GPIO controller registers.
11 - gpio-controller: Marks the device node as a GPIO controller.
12 - #gpio-cells: Should be <2>. The first cell is the gpio number and
13 the second cell is used to specify optional parameters.
14 - interrupt-controller: Marks the device node as an interrupt controller.
15 - #interrupt-cells: Should be <2>. Specifies the number of cells needed
16 to encode interrupt source.
17 - interrupts: Should be the port interrupt shared by all the gpios.
20 ap_gpio: gpio@40280000 {
21 compatible = "sprd,sc9860-gpio";
22 reg = <0 0x40280000 0 0x1000>;
26 #interrupt-cells = <2>;
27 interrupts = <GIC_SPI 50 IRQ_TYPE_LEVEL_HIGH>;