| b.liu | e958203 | 2025-04-17 19:18:16 +0800 | [diff] [blame] | 1 | Spreadtrum GPIO controller bindings |
| 2 | |
| 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. |
| 6 | |
| 7 | Required properties: |
| 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. |
| 18 | |
| 19 | Example: |
| 20 | ap_gpio: gpio@40280000 { |
| 21 | compatible = "sprd,sc9860-gpio"; |
| 22 | reg = <0 0x40280000 0 0x1000>; |
| 23 | gpio-controller; |
| 24 | #gpio-cells = <2>; |
| 25 | interrupt-controller; |
| 26 | #interrupt-cells = <2>; |
| 27 | interrupts = <GIC_SPI 50 IRQ_TYPE_LEVEL_HIGH>; |
| 28 | }; |