| Freescale Reference Board Bindings |
| |
| This document describes device tree bindings for various devices that |
| exist on some Freescale reference boards. |
| |
| * Board Control and Status (BCSR) |
| |
| Required properties: |
| |
| - compatible : Should be "fsl,<board>-bcsr" |
| - reg : Offset and length of the register set for the device |
| |
| Example: |
| |
| bcsr@f8000000 { |
| compatible = "fsl,mpc8360mds-bcsr"; |
| reg = <f8000000 8000>; |
| }; |
| |
| * Freescale on-board FPGA |
| |
| This is the memory-mapped registers for on board FPGA. |
| |
| Required properities: |
| - compatible: should be a board-specific string followed by a string |
| indicating the type of FPGA. Example: |
| "fsl,<board>-fpga", "fsl,fpga-pixis" |
| - reg: should contain the address and the length of the FPGA register set. |
| - interrupt-parent: should specify phandle for the interrupt controller. |
| - interrupts: should specify event (wakeup) IRQ. |
| |
| Example (P1022DS): |
| |
| board-control@3,0 { |
| compatible = "fsl,p1022ds-fpga", "fsl,fpga-ngpixis"; |
| reg = <3 0 0x30>; |
| interrupt-parent = <&mpic>; |
| interrupts = <8 8 0 0>; |
| }; |
| |
| * Freescale BCSR GPIO banks |
| |
| Some BCSR registers act as simple GPIO controllers, each such |
| register can be represented by the gpio-controller node. |
| |
| Required properities: |
| - compatible : Should be "fsl,<board>-bcsr-gpio". |
| - reg : Should contain the address and the length of the GPIO bank |
| register. |
| - #gpio-cells : Should be two. The first cell is the pin number and the |
| second cell is used to specify optional parameters (currently unused). |
| - gpio-controller : Marks the port as GPIO controller. |
| |
| Example: |
| |
| bcsr@1,0 { |
| #address-cells = <1>; |
| #size-cells = <1>; |
| compatible = "fsl,mpc8360mds-bcsr"; |
| reg = <1 0 0x8000>; |
| ranges = <0 1 0 0x8000>; |
| |
| bcsr13: gpio-controller@d { |
| #gpio-cells = <2>; |
| compatible = "fsl,mpc8360mds-bcsr-gpio"; |
| reg = <0xd 1>; |
| gpio-controller; |
| }; |
| }; |
| |
| * Freescale on-board FPGA connected on I2C bus |
| |
| Some Freescale boards like BSC9132QDS have on board FPGA connected on |
| the i2c bus. |
| |
| Required properties: |
| - compatible: Should be a board-specific string followed by a string |
| indicating the type of FPGA. Example: |
| "fsl,<board>-fpga", "fsl,fpga-qixis-i2c" |
| - reg: Should contain the address of the FPGA |
| |
| Example: |
| fpga: fpga@66 { |
| compatible = "fsl,bsc9132qds-fpga", "fsl,fpga-qixis-i2c"; |
| reg = <0x66>; |
| }; |
| |
| * Freescale on-board CPLD |
| |
| Some Freescale boards like T1040RDB have an on board CPLD connected. |
| |
| Required properties: |
| - compatible: Should be a board-specific string like "fsl,<board>-cpld" |
| Example: |
| "fsl,t1040rdb-cpld", "fsl,t1042rdb-cpld", "fsl,t1042rdb_pi-cpld" |
| - reg: should describe CPLD registers |
| |
| Example: |
| cpld@3,0 { |
| compatible = "fsl,t1040rdb-cpld"; |
| reg = <3 0 0x300>; |
| }; |