Based on kernel version 4.7.2. Page generated on 2016-08-22 22:43 EST.
1 Every GPIO controller node must have #gpio-cells property defined, 2 this information will be used to translate gpio-specifiers. 3 4 On CPM1 devices, all ports are using slightly different register layouts. 5 Ports A, C and D are 16bit ports and Ports B and E are 32bit ports. 6 7 On CPM2 devices, all ports are 32bit ports and use a common register layout. 8 9 Required properties: 10 - compatible : "fsl,cpm1-pario-bank-a", "fsl,cpm1-pario-bank-b", 11 "fsl,cpm1-pario-bank-c", "fsl,cpm1-pario-bank-d", 12 "fsl,cpm1-pario-bank-e", "fsl,cpm2-pario-bank" 13 - #gpio-cells : Should be two. The first cell is the pin number and the 14 second cell is used to specify optional parameters (currently unused). 15 - gpio-controller : Marks the port as GPIO controller. 16 17 Example of three SOC GPIO banks defined as gpio-controller nodes: 18 19 CPM1_PIO_A: gpio-controller@950 { 20 #gpio-cells = <2>; 21 compatible = "fsl,cpm1-pario-bank-a"; 22 reg = <0x950 0x10>; 23 gpio-controller; 24 }; 25 26 CPM1_PIO_B: gpio-controller@ab8 { 27 #gpio-cells = <2>; 28 compatible = "fsl,cpm1-pario-bank-b"; 29 reg = <0xab8 0x10>; 30 gpio-controller; 31 }; 32 33 CPM1_PIO_E: gpio-controller@ac8 { 34 #gpio-cells = <2>; 35 compatible = "fsl,cpm1-pario-bank-e"; 36 reg = <0xac8 0x18>; 37 gpio-controller; 38 };