1Netlogic XLP Family GPIO 2======================== 3 4This GPIO driver is used for following Netlogic XLP SoCs: 5 XLP832, XLP316, XLP208, XLP980, XLP532 6This GPIO driver is also compatible with GPIO controller found on 7Broadcom Vulcan ARM64. 8 9Required properties: 10------------------- 11 12- compatible: Should be one of the following: 13 - "netlogic,xlp832-gpio": For Netlogic XLP832 14 - "netlogic,xlp316-gpio": For Netlogic XLP316 15 - "netlogic,xlp208-gpio": For Netlogic XLP208 16 - "netlogic,xlp980-gpio": For Netlogic XLP980 17 - "netlogic,xlp532-gpio": For Netlogic XLP532 18 - "brcm,vulcan-gpio": For Broadcom Vulcan ARM64 19- reg: Physical base address and length of the controller's registers. 20- #gpio-cells: Should be two. The first cell is the pin number and the second 21 cell is used to specify optional parameters (currently unused). 22- gpio-controller: Marks the device node as a GPIO controller. 23- nr-gpios: Number of GPIO pins supported by the controller. 24- interrupt-cells: Should be two. The first cell is the GPIO Number. The 25 second cell is used to specify flags. The following subset of flags is 26 supported: 27 - trigger type: 28 1 = low to high edge triggered. 29 2 = high to low edge triggered. 30 4 = active high level-sensitive. 31 8 = active low level-sensitive. 32- interrupts: Interrupt number for this device. 33- interrupt-parent: phandle of the parent interrupt controller. 34- interrupt-controller: Identifies the node as an interrupt controller. 35 36Example: 37 38 gpio: xlp_gpio@34000 { 39 compatible = "netlogic,xlp316-gpio"; 40 reg = <0 0x34100 0x1000 41 0 0x35100 0x1000>; 42 #gpio-cells = <2>; 43 gpio-controller; 44 nr-gpios = <57>; 45 46 #interrupt-cells = <2>; 47 interrupt-parent = <&pic>; 48 interrupts = <39>; 49 interrupt-controller; 50 }; 51