xref: /freebsd/sys/contrib/device-tree/Bindings/reset/fsl,imx-src.txt (revision c66ec88fed842fbaad62c30d510644ceb7bd2d71)

Freescale i.MX System Reset Controller
======================================

Please also refer to reset.txt in this directory for common reset
controller binding usage.

Required properties:
- compatible: Should be "fsl,<chip>-src"
- reg: should be register base and length as documented in the
  datasheet
- interrupts: Should contain SRC interrupt and CPU WDOG interrupt,
  in this order.
- #reset-cells: 1, see below

example:

src: src@20d8000 {
        compatible = "fsl,imx6q-src";
        reg = <0x020d8000 0x4000>;
        interrupts = <0 91 0x04 0 96 0x04>;
        #reset-cells = <1>;
};

Specifying reset lines connected to IP modules
==============================================

The system reset controller can be used to reset the GPU, VPU,
IPU, and OpenVG IP modules on i.MX5 and i.MX6 ICs. Those device
nodes should specify the reset line on the SRC in their resets
property, containing a phandle to the SRC device node and a
RESET_INDEX specifying which module to reset, as described in
reset.txt

example:

        ipu1: ipu@2400000 {
                resets = <&src 2>;
        };
        ipu2: ipu@2800000 {
                resets = <&src 4>;
        };

The following RESET_INDEX values are valid for i.MX5:
GPU_RESET     0
VPU_RESET     1
IPU1_RESET    2
OPEN_VG_RESET 3
The following additional RESET_INDEX value is valid for i.MX6:
IPU2_RESET    4